sql_yacc.yy 285 KB
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/* Copyright (C) 2000-2003 MySQL AB
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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

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/* sql_yacc.yy */
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%{
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/* thd is passed as an arg to yyparse(), and subsequently to yylex().
** The type will be void*, so it must be  cast to (THD*) when used.
** Use the YYTHD macro for this.
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*/
#define YYPARSE_PARAM yythd
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#define YYLEX_PARAM yythd
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#define YYTHD ((THD *)yythd)

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#define MYSQL_YACC
#define YYINITDEPTH 100
#define YYMAXDEPTH 3200				/* Because of 64K stack */
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#define Lex (YYTHD->lex)
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#define Select Lex->current_select
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#include "mysql_priv.h"
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#include "slave.h"
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#include "lex_symbol.h"
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#include "item_create.h"
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#include "sp_head.h"
#include "sp_pcontext.h"
#include "sp_rcontext.h"
#include "sp.h"
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#include "event.h"
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#include <myisam.h>
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#include <myisammrg.h>
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int yylex(void *yylval, void *yythd);
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const LEX_STRING null_lex_str={0,0};

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#define yyoverflow(A,B,C,D,E,F) {ulong val= *(F); if (my_yyoverflow((B), (D), &val)) { yyerror((char*) (A)); return 2; } else { *(F)= (YYSIZE_T)val; }}
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#define WARN_DEPRECATED(A,B)                                        \
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  push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN, \
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		      ER_WARN_DEPRECATED_SYNTAX,                    \
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		      ER(ER_WARN_DEPRECATED_SYNTAX), (A), (B));
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#define YYERROR_UNLESS(A)                  \
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  if (!(A))                             \
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  {					\
    yyerror(ER(ER_SYNTAX_ERROR));	\
    YYABORT;				\
  }

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/* Helper for parsing "IS [NOT] truth_value" */
inline Item *is_truth_value(Item *A, bool v1, bool v2)
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{
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  return new Item_func_if(create_func_ifnull(A,
	new Item_int((char *) (v2 ? "TRUE" : "FALSE"), v2, 1)),
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	new Item_int((char *) (v1 ? "TRUE" : "FALSE"), v1, 1),
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	new Item_int((char *) (v1 ? "FALSE" : "TRUE"),!v1, 1));
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}

%}
%union {
  int  num;
  ulong ulong_num;
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  ulonglong ulonglong_number;
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  longlong longlong_number;
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  LEX_STRING lex_str;
  LEX_STRING *lex_str_ptr;
  LEX_SYMBOL symbol;
  Table_ident *table;
  char *simple_string;
  Item *item;
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  Item_num *item_num;
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  List<Item> *item_list;
  List<String> *string_list;
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  String *string;
  key_part_spec *key_part;
  TABLE_LIST *table_list;
  udf_func *udf;
  LEX_USER *lex_user;
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  struct sys_var_with_base variable;
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  enum enum_var_type var_type;
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  Key::Keytype key_type;
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  enum ha_key_alg key_alg;
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  handlerton *db_type;
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  enum row_type row_type;
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  enum ha_rkey_function ha_rkey_mode;
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  enum enum_tx_isolation tx_isolation;
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  enum Cast_target cast_type;
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  enum Item_udftype udf_type;
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  CHARSET_INFO *charset;
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  thr_lock_type lock_type;
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  interval_type interval, interval_time_st;
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  timestamp_type date_time_type;
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  st_select_lex *select_lex;
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  chooser_compare_func_creator boolfunc2creator;
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  struct sp_cond_type *spcondtype;
  struct { int vars, conds, hndlrs, curs; } spblock;
  sp_name *spname;
  struct st_lex *lex;
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  sp_head *sphead;
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}

%{
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bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
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%}

%pure_parser					/* We have threads */

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%token  TO_SYM
%token  TRAILING
%token  TRANSACTION_SYM
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%token  TRIGGER_SYM
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%token  TRIGGERS_SYM
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%token  TRIM
%token  TRUE_SYM
%token  TRUNCATE_SYM
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%token  TYPES_SYM
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%token  TYPE_SYM
%token  UDF_RETURNS_SYM
%token  ULONGLONG_NUM
%token  UNCOMMITTED_SYM
%token  UNDEFINED_SYM
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%token  UNDO_BUFFER_SIZE_SYM
%token  UNDOFILE_SYM
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%token  UNDERSCORE_CHARSET
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%token  UNDO_SYM
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%token  UNICODE_SYM
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%token  UNINSTALL_SYM
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%token  UNION_SYM
%token  UNIQUE_SYM
%token  UNIQUE_USERS
%token  UNIX_TIMESTAMP
%token  UNKNOWN_SYM
%token  UNLOCK_SYM
%token  UNSIGNED
%token  UNTIL_SYM
%token  UPDATE_SYM
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%token  UPGRADE_SYM
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%token  USAGE
%token  USER
%token  USE_FRM
%token  USE_SYM
%token  USING
%token  UTC_DATE_SYM
%token  UTC_TIMESTAMP_SYM
%token  UTC_TIME_SYM
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%token  VAR_SAMP_SYM
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%token  VALUES
%token  VALUE_SYM
%token  VARBINARY
%token  VARCHAR
%token  VARIABLES
%token  VARIANCE_SYM
%token  VARYING
%token  VIEW_SYM
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%token  WAIT_SYM
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%token  WARNINGS
%token  WEEK_SYM
%token  WHEN_SYM
%token  WHERE
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%token  WHILE_SYM
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%token  WITH
%token  WORK_SYM
%token  WRITE_SYM
%token  X509_SYM
%token  XA_SYM
%token  XOR
%token  YEARWEEK
%token  YEAR_MONTH_SYM
%token  YEAR_SYM
%token  ZEROFILL
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%left   JOIN_SYM INNER_SYM STRAIGHT_JOIN CROSS LEFT RIGHT
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/* A dummy token to force the priority of table_ref production in a join. */
%left   TABLE_REF_PRIORITY
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%left   SET_VAR
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%left	OR_OR_SYM OR_SYM OR2_SYM XOR
%left	AND_SYM AND_AND_SYM
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%left	BETWEEN_SYM CASE_SYM WHEN_SYM THEN_SYM ELSE
%left	EQ EQUAL_SYM GE GT_SYM LE LT NE IS LIKE REGEXP IN_SYM
%left	'|'
%left	'&'
%left	SHIFT_LEFT SHIFT_RIGHT
%left	'-' '+'
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%left	'*' '/' '%' DIV_SYM MOD_SYM
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%left   '^'
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%left	NEG '~'
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%right	NOT_SYM NOT2_SYM
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%right	BINARY COLLATE_SYM
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%type <lex_str>
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        IDENT IDENT_QUOTED TEXT_STRING DECIMAL_NUM FLOAT_NUM NUM LONG_NUM HEX_NUM
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	LEX_HOSTNAME ULONGLONG_NUM field_ident select_alias ident ident_or_text
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        UNDERSCORE_CHARSET IDENT_sys TEXT_STRING_sys TEXT_STRING_literal
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	NCHAR_STRING opt_component key_cache_name
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        sp_opt_label BIN_NUM label_ident TEXT_STRING_filesystem
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%type <lex_str_ptr>
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	opt_table_alias opt_fulltext_parser
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%type <table>
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	table_ident table_ident_nodb references xid
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%type <simple_string>
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	remember_name remember_end opt_ident opt_db text_or_password
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	opt_constraint constraint ident_or_empty
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%type <string>
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	text_string opt_gconcat_separator
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%type <num>
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	type int_type real_type order_dir lock_option
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	udf_type if_exists opt_local opt_table_options table_options
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        table_option opt_if_not_exists opt_no_write_to_binlog
        delete_option opt_temporary all_or_any opt_distinct
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        opt_ignore_leaves fulltext_options spatial_type union_option
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        start_transaction_opts opt_chain opt_release
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        union_opt select_derived_init option_type2
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        opt_natural_language_mode opt_query_expansion
        opt_ev_status opt_ev_on_completion ev_on_completion opt_ev_comment
        ev_alter_on_schedule_completion opt_ev_rename_to opt_ev_sql_stmt
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%type <ulong_num>
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	ulong_num merge_insert_types
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%type <ulonglong_number>
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	ulonglong_num size_number
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%type <longlong_number>
        part_bit_expr

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%type <lock_type>
	replace_lock_option opt_low_priority insert_lock_option load_data_lock

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%type <item>
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	literal text_literal insert_ident order_ident
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	simple_ident select_item2 expr opt_expr opt_else sum_expr in_sum_expr
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	bool_term bool_factor bool_test bool_pri 
	predicate bit_expr bit_term bit_factor value_expr term factor
	table_wild simple_expr udf_expr
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	expr_or_default set_expr_or_default interval_expr
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	param_marker singlerow_subselect singlerow_subselect_init
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	exists_subselect exists_subselect_init geometry_function
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	signed_literal now_or_signed_literal opt_escape
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	sp_opt_default
	simple_ident_nospvar simple_ident_q
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        field_or_var limit_option
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        part_func_expr
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%type <item_num>
	NUM_literal
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%type <item_list>
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	expr_list udf_expr_list udf_expr_list2 when_list
	ident_list ident_list_arg
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%type <var_type>
        option_type opt_var_type opt_var_ident_type

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%type <key_type>
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	key_type opt_unique_or_fulltext constraint_key_type
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%type <key_alg>
	key_alg opt_btree_or_rtree

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%type <string_list>
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	key_usage_list using_list
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%type <key_part>
	key_part

%type <table_list>
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	join_table_list  join_table
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        table_factor table_ref
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        select_derived derived_table_list
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%type <date_time_type> date_time_type;
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%type <interval> interval

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%type <interval_time_st> interval_time_st

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%type <db_type> storage_engines
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%type <row_type> row_types

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%type <tx_isolation> isolation_types
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%type <ha_rkey_mode> handler_rkey_mode

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%type <cast_type> cast_type
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%type <udf_type> udf_func_type

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%type <symbol> FUNC_ARG0 FUNC_ARG1 FUNC_ARG2 FUNC_ARG3 keyword keyword_sp
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%type <lex_user> user grant_user get_definer
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%type <charset>
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	opt_collate
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	charset_name
	charset_name_or_default
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	old_or_new_charset_name
	old_or_new_charset_name_or_default
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	collation_name
	collation_name_or_default
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%type <variable> internal_variable_name

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%type <select_lex> in_subselect in_subselect_init
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	get_select_lex
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%type <boolfunc2creator> comp_op

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%type <NONE>
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	query verb_clause create change select do drop insert replace insert2
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	insert_values update delete truncate rename
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	show describe load alter optimize keycache preload flush
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	reset purge begin commit rollback savepoint release
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	slave master_def master_defs master_file_def slave_until_opts
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	repair restore backup analyze check start checksum
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	field_list field_list_item field_spec kill column_def key_def
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	keycache_list assign_to_keycache preload_list preload_keys
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	select_item_list select_item values_list no_braces
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	opt_limit_clause delete_limit_clause fields opt_values values
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	procedure_list procedure_list2 procedure_item
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	when_list2 expr_list2 udf_expr_list3 handler
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	opt_precision opt_ignore opt_column opt_restrict
	grant revoke set lock unlock string_list field_options field_option
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	field_opt_list opt_binary table_lock_list table_lock
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	ref_list opt_on_delete opt_on_delete_list opt_on_delete_item use
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	opt_delete_options opt_delete_option varchar nchar nvarchar
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	opt_outer table_list table_name opt_option opt_place
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	opt_attribute opt_attribute_list attribute column_list column_list_id
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	opt_column_list grant_privileges grant_ident grant_list grant_option
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	object_privilege object_privilege_list user_list rename_list
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	clear_privileges flush_options flush_option
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	equal optional_braces opt_key_definition key_usage_list2
	opt_mi_check_type opt_to mi_check_types normal_join
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	db_to_db table_to_table_list table_to_table opt_table_list opt_as
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	handler_rkey_function handler_read_or_scan
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	single_multi table_wild_list table_wild_one opt_wild
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	union_clause union_list
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	precision subselect_start opt_and charset
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	subselect_end select_var_list select_var_list_init help opt_len
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	opt_extended_describe
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        prepare prepare_src execute deallocate
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	statement sp_suid
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	sp_c_chistics sp_a_chistics sp_chistic sp_c_chistic xa
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        load_data opt_field_or_var_spec fields_or_vars opt_load_data_set_spec
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        definer view_replace_or_algorithm view_replace view_algorithm_opt
        view_algorithm view_or_trigger_tail view_suid view_tail view_list_opt
        view_list view_select view_check_option trigger_tail
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        install uninstall partition_entry binlog_base64_event
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END_OF_INPUT
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%type <NONE> call sp_proc_stmts sp_proc_stmts1 sp_proc_stmt
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%type <NONE> sp_proc_stmt_statement sp_proc_stmt_return
%type <NONE> sp_proc_stmt_if sp_proc_stmt_case_simple sp_proc_stmt_case
%type <NONE> sp_labeled_control sp_proc_stmt_unlabeled sp_proc_stmt_leave
%type <NONE> sp_proc_stmt_iterate sp_proc_stmt_label sp_proc_stmt_goto
%type <NONE> sp_proc_stmt_open sp_proc_stmt_fetch sp_proc_stmt_close

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%type <num>  sp_decl_idents sp_opt_inout sp_handler_type sp_hcond_list
%type <spcondtype> sp_cond sp_hcond
%type <spblock> sp_decls sp_decl
%type <lex> sp_cursor_stmt
%type <spname> sp_name

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%type <NONE>
	'-' '+' '*' '/' '%' '(' ')'
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	',' '!' '{' '}' '&' '|' AND_SYM OR_SYM OR_OR_SYM BETWEEN_SYM CASE_SYM
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	THEN_SYM WHEN_SYM DIV_SYM MOD_SYM OR2_SYM AND_AND_SYM
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%%


query:
	END_OF_INPUT
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	{
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	   THD *thd= YYTHD;
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	   if (!thd->bootstrap &&
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	      (!(thd->lex->select_lex.options & OPTION_FOUND_COMMENT)))
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	   {
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	     my_message(ER_EMPTY_QUERY, ER(ER_EMPTY_QUERY), MYF(0));
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	     YYABORT;
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	   }
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	   else
	   {
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	     thd->lex->sql_command= SQLCOM_EMPTY_QUERY;
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	   }
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	}
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	| verb_clause END_OF_INPUT {};
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verb_clause:
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	  statement
	| begin
	;

/* Verb clauses, except begin */
statement:
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	  alter
	| analyze
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	| backup
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	| binlog_base64_event
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	| call
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	| change
	| check
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	| checksum
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	| commit
	| create
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        | deallocate
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	| delete
	| describe
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	| do
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	| drop
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        | execute
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	| flush
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	| grant
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	| handler
	| help
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	| insert
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        | install
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	| kill
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	| load
	| lock
	| optimize
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        | keycache
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        | partition_entry
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	| preload
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        | prepare
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	| purge
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	| release
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	| rename
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	| repair
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	| replace
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	| reset
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	| restore
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	| revoke
	| rollback
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	| savepoint
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	| select
	| set
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	| show
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	| slave
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	| start
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	| truncate
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        | uninstall
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	| unlock
	| update
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	| use
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	| xa
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        ;
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deallocate:
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        deallocate_or_drop PREPARE_SYM ident
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        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (lex->stmt_prepare_mode)
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          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_DEALLOCATE_PREPARE;
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          lex->prepared_stmt_name= $3;
        };

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deallocate_or_drop:
	DEALLOCATE_SYM |
	DROP
	;


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prepare:
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        PREPARE_SYM ident FROM prepare_src
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        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (lex->stmt_prepare_mode)
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          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_PREPARE;
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          lex->prepared_stmt_name= $2;
        };

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prepare_src:
        TEXT_STRING_sys
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          lex->prepared_stmt_code= $1;
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          lex->prepared_stmt_code_is_varref= FALSE;
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        }
        | '@' ident_or_text
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          lex->prepared_stmt_code= $2;
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          lex->prepared_stmt_code_is_varref= TRUE;
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        };
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execute:
        EXECUTE_SYM ident
        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (lex->stmt_prepare_mode)
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          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_EXECUTE;
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          lex->prepared_stmt_name= $2;
        }
        execute_using
        {}
        ;

execute_using:
        /* nothing */
        | USING execute_var_list
        ;

execute_var_list:
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        execute_var_list ',' execute_var_ident
        | execute_var_ident
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        ;

execute_var_ident: '@' ident_or_text
        {
          LEX *lex=Lex;
          LEX_STRING *lexstr= (LEX_STRING*)sql_memdup(&$2, sizeof(LEX_STRING));
          if (!lexstr || lex->prepared_stmt_params.push_back(lexstr))
              YYABORT;
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        }
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        ;

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/* help */

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help:
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       HELP_SYM
       {
         if (Lex->sphead)
         {
           my_error(ER_SP_BADSTATEMENT, MYF(0), "HELP");
           YYABORT;
         }
       }
       ident_or_text
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       {
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	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_HELP;
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	  lex->help_arg= $3.str;
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       };
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/* change master */

change:
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       CHANGE MASTER_SYM TO_SYM
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        {
	  LEX *lex = Lex;
	  lex->sql_command = SQLCOM_CHANGE_MASTER;
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	  bzero((char*) &lex->mi, sizeof(lex->mi));
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        }
       master_defs
	{}
       ;
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master_defs:
       master_def
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       | master_defs ',' master_def;
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master_def:
       MASTER_HOST_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.host = $3.str;
       }
       |
       MASTER_USER_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.user = $3.str;
       }
       |
       MASTER_PASSWORD_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.password = $3.str;
       }
       |
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       MASTER_PORT_SYM EQ ulong_num
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       {
	 Lex->mi.port = $3;
       }
       |
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       MASTER_CONNECT_RETRY_SYM EQ ulong_num
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       {
	 Lex->mi.connect_retry = $3;
       }
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       | MASTER_SSL_SYM EQ ulong_num
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         {
           Lex->mi.ssl= $3 ? 
               LEX_MASTER_INFO::SSL_ENABLE : LEX_MASTER_INFO::SSL_DISABLE;
         }
       | MASTER_SSL_CA_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_ca= $3.str;
         }
       | MASTER_SSL_CAPATH_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_capath= $3.str;
         }
       | MASTER_SSL_CERT_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_cert= $3.str;
         }
       | MASTER_SSL_CIPHER_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_cipher= $3.str;
         }
       | MASTER_SSL_KEY_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_key= $3.str;
	 }
       |
         master_file_def
       ;

master_file_def:
       MASTER_LOG_FILE_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.log_file_name = $3.str;
       }
       | MASTER_LOG_POS_SYM EQ ulonglong_num
         {
           Lex->mi.pos = $3;
           /* 
              If the user specified a value < BIN_LOG_HEADER_SIZE, adjust it
              instead of causing subsequent errors. 
              We need to do it in this file, because only there we know that 
              MASTER_LOG_POS has been explicitely specified. On the contrary
              in change_master() (sql_repl.cc) we cannot distinguish between 0
              (MASTER_LOG_POS explicitely specified as 0) and 0 (unspecified),
              whereas we want to distinguish (specified 0 means "read the binlog
              from 0" (4 in fact), unspecified means "don't change the position
              (keep the preceding value)").
           */
           Lex->mi.pos = max(BIN_LOG_HEADER_SIZE, Lex->mi.pos);
         }
       | RELAY_LOG_FILE_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.relay_log_name = $3.str;
         }
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       | RELAY_LOG_POS_SYM EQ ulong_num
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         {
           Lex->mi.relay_log_pos = $3;
           /* Adjust if < BIN_LOG_HEADER_SIZE (same comment as Lex->mi.pos) */
           Lex->mi.relay_log_pos = max(BIN_LOG_HEADER_SIZE, Lex->mi.relay_log_pos);
         }
       ;

/* create a table */

create:
	CREATE opt_table_options TABLE_SYM opt_if_not_exists table_ident
	{
	  THD *thd= YYTHD;
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_CREATE_TABLE;
	  if (!lex->select_lex.add_table_to_list(thd, $5, NULL,
						 TL_OPTION_UPDATING,
						 (using_update_log ?
						  TL_READ_NO_INSERT:
						  TL_READ)))
	    YYABORT;
	  lex->create_list.empty();
	  lex->key_list.empty();
	  lex->col_list.empty();
	  lex->change=NullS;
	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	  lex->create_info.options=$2 | $4;
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	  lex->create_info.db_type= lex->thd->variables.table_type;
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	  lex->create_info.default_table_charset= NULL;
	  lex->name=0;
	}
	create2
	  { Lex->current_select= &Lex->select_lex; }
	| CREATE opt_unique_or_fulltext INDEX_SYM ident key_alg ON table_ident
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_CREATE_INDEX;
	    if (!lex->current_select->add_table_to_list(lex->thd, $7, NULL,
							TL_OPTION_UPDATING))
	      YYABORT;
	    lex->create_list.empty();
	    lex->key_list.empty();
	    lex->col_list.empty();
	    lex->change=NullS;
	  }
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	   '(' key_list ')' opt_fulltext_parser
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	  {
	    LEX *lex=Lex;
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	    if ($2 != Key::FULLTEXT && $12)
	    {
	      yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
	    }
	    lex->key_list.push_back(new Key($2,$4.str,$5,0,lex->col_list,$12));
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	    lex->col_list.empty();
	  }
	| CREATE DATABASE opt_if_not_exists ident
	  {
             Lex->create_info.default_table_charset= NULL;
             Lex->create_info.used_fields= 0;
          }
	  opt_create_database_options
	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_CREATE_DB;
	    lex->name=$4.str;
            lex->create_info.options=$3;
	  }
	| CREATE udf_func_type FUNCTION_SYM sp_name
	  {
	    LEX *lex=Lex;
	    lex->spname= $4;
	    lex->udf.type= $2;
	  }
	  create_function_tail
	  {}
	| CREATE PROCEDURE sp_name
	  {
	    LEX *lex= Lex;
	    sp_head *sp;

	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "PROCEDURE");
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	      YYABORT;
	    }
	    /* Order is important here: new - reset - init */
	    sp= new sp_head();
	    sp->reset_thd_mem_root(YYTHD);
	    sp->init(lex);

	    sp->m_type= TYPE_ENUM_PROCEDURE;
	    lex->sphead= sp;
	    /*
	     * We have to turn of CLIENT_MULTI_QUERIES while parsing a
	     * stored procedure, otherwise yylex will chop it into pieces
	     * at each ';'.
	     */
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            $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
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	    YYTHD->client_capabilities &= (~CLIENT_MULTI_QUERIES);
	  }
          '('
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_begin= lex->tok_start+1;
	  }
	  sp_pdparam_list
	  ')'
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_end= lex->tok_start;
	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  }
	  sp_c_chistics
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_chistics= &lex->sp_chistics;
	    lex->sphead->m_body_begin= lex->tok_start;
	  }
	  sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

	    if (sp->check_backpatch(YYTHD))
	      YYABORT;
	    sp->init_strings(YYTHD, lex, $3);
	    lex->sql_command= SQLCOM_CREATE_PROCEDURE;
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	    /*
              Restore flag if it was cleared above
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              Be careful with counting. the block where we save the value
              is $4.
            */
	    YYTHD->client_capabilities |= $<ulong_num>4;
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	    sp->restore_thd_mem_root(YYTHD);
	  }
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	| CREATE EVENT_SYM opt_if_not_exists sp_name
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          /*
             BE CAREFUL when you add a new rule to update the block where
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             YYTHD->client_capabilities is set back to original value
          */
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          {
            LEX *lex=Lex;

            if (lex->et)
            {
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              /*
                Recursive events are not possible because recursive SPs
                are not also possible. lex->sp_head is not stacked.
              */
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              // ToDo Andrey : Change the error message
              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
              YYABORT;
            }

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            lex->create_info.options= $3;
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            if (!(lex->et= new event_timed())) // implicitly calls event_timed::init()
              YYABORT;
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            /*
              We have to turn of CLIENT_MULTI_QUERIES while parsing a
              stored procedure, otherwise yylex will chop it into pieces
              at each ';'.
            */
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            $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
            YYTHD->client_capabilities &= (~CLIENT_MULTI_QUERIES);

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            if (!lex->et_compile_phase)
            {
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              lex->et->init_name(YYTHD, $4);
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              lex->et->init_definer(YYTHD);
            }
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          }
          ON SCHEDULE_SYM ev_schedule_time
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          opt_ev_on_completion
          opt_ev_status
          opt_ev_comment
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          DO_SYM ev_sql_stmt
          {
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            /*
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              Restore flag if it was cleared above
              $1 - CREATE
              $2 - EVENT_SYM
              $3 - opt_if_not_exists
              $4 - sp_name
              $5 - the block above
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            */
            YYTHD->client_capabilities |= $<ulong_num>5;
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            /*
              sql_command is set here because some rules in ev_sql_stmt
              can overwrite it
            */
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            Lex->sql_command= SQLCOM_CREATE_EVENT;
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          }
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	| CREATE
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	  {
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            Lex->create_view_mode= VIEW_CREATE_NEW;
            Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED;
            Lex->create_view_suid= TRUE;
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	  }
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	  view_or_trigger
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	  {}
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	| CREATE USER clear_privileges grant_list
	  {
	    Lex->sql_command = SQLCOM_CREATE_USER;
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          }
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	| CREATE LOGFILE_SYM GROUP logfile_group_info 
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          {
            LEX *lex= Lex;
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            lex->alter_tablespace_info->ts_cmd_type= CREATE_LOGFILE_GROUP;
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          }
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        | CREATE TABLESPACE tablespace_info
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          {
            LEX *lex= Lex;
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            lex->alter_tablespace_info->ts_cmd_type= CREATE_TABLESPACE;
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          }
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	;
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ev_schedule_time: EVERY_SYM expr interval
	  {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
            {
              switch (lex->et->init_interval(YYTHD , $2, $3)) {
              case EVEX_PARSE_ERROR:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
                break;
              case EVEX_BAD_PARAMS:
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                my_error(ER_EVENT_INTERVAL_NOT_POSITIVE_OR_TOO_BIG, MYF(0));
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              case EVEX_MICROSECOND_UNSUP:
                my_error(ER_NOT_SUPPORTED_YET, MYF(0), "MICROSECOND");
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                YYABORT;
                break;
              }
            }
          }
          ev_starts
          ev_ends
        | AT_SYM expr
          {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
            {
              switch (lex->et->init_execute_at(YYTHD, $2)) {
              case EVEX_PARSE_ERROR:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;  
                break;
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              case ER_WRONG_VALUE:
                {
                  char buff[120];
                  String str(buff,(uint32) sizeof(buff), system_charset_info);
                  String *str2= $2->val_str(&str);
                  my_error(ER_WRONG_VALUE, MYF(0), "AT",
                           str2? str2->c_ptr():"NULL");
                  YYABORT;
                  break;
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                }
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              case EVEX_BAD_PARAMS:
                my_error(ER_EVENT_EXEC_TIME_IN_THE_PAST, MYF(0));
                YYABORT;
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                break;
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              }
            }
          }
      ;
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opt_ev_status: /* empty */ { $$= 0; }
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        | ENABLE_SYM
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          {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
              lex->et->status= MYSQL_EVENT_ENABLED;
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            $$= 1;
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          }
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        | DISABLE_SYM
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          {
            LEX *lex=Lex;
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            if (!lex->et_compile_phase)
              lex->et->status= MYSQL_EVENT_DISABLED;
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            $$= 1;
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          }
      ;

ev_starts: /* empty */
        | STARTS_SYM expr
          {
            LEX *lex= Lex;
            if (!lex->et_compile_phase)
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            {
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              switch (lex->et->init_starts(YYTHD, $2)) {
              case EVEX_PARSE_ERROR:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
                break;
              case EVEX_BAD_PARAMS:
                {
                  char buff[20];
                  String str(buff,(uint32) sizeof(buff), system_charset_info);
                  String *str2= $2->val_str(&str);
                  my_error(ER_WRONG_VALUE, MYF(0), "STARTS", str2? str2->c_ptr():
                                                                   NULL);
                  YYABORT;
                  break;
                }
              }
            }
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          }
      ;

ev_ends: /* empty */
        | ENDS_SYM expr
          {
            LEX *lex= Lex;
            if (!lex->et_compile_phase)
            {
              switch (lex->et->init_ends(YYTHD, $2)) {
              case EVEX_PARSE_ERROR:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
                break;
              case EVEX_BAD_PARAMS:
                my_error(ER_EVENT_ENDS_BEFORE_STARTS, MYF(0));
                YYABORT;
                break;
              }
            }
          }
      ;

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opt_ev_on_completion: /* empty */ { $$= 0; }
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        | ev_on_completion
      ;

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ev_on_completion:
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          ON COMPLETION_SYM PRESERVE_SYM
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          {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
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              lex->et->on_completion= MYSQL_EVENT_ON_COMPLETION_PRESERVE;
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            $$= 1;
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          }
        | ON COMPLETION_SYM NOT_SYM PRESERVE_SYM
          {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
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              lex->et->on_completion= MYSQL_EVENT_ON_COMPLETION_DROP;
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            $$= 1;
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          }
      ;
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opt_ev_comment: /* empty */ { $$= 0; }
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        | COMMENT_SYM TEXT_STRING_sys
          {
            LEX *lex= Lex;
            if (!lex->et_compile_phase)
            {
              lex->comment= $2;
              lex->et->init_comment(YYTHD, &$2);
            }
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            $$= 1;
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          }
      ;

ev_sql_stmt:
          {
            LEX *lex= Lex;
            sp_head *sp;
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            $<sphead>$= lex->sphead;
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            if (!lex->sphead)
            {
              if (!(sp= new sp_head()))
                YYABORT;
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              sp->reset_thd_mem_root(YYTHD);
              sp->init(lex);
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              sp->m_type= TYPE_ENUM_PROCEDURE;
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              lex->sphead= sp;
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              bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
              lex->sphead->m_chistics= &lex->sp_chistics;
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              lex->sphead->m_body_begin= lex->ptr;
            }

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            if (!lex->et_compile_phase)
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              lex->et->body_begin= lex->ptr;
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          }
          ev_sql_stmt_inner
          {
            LEX *lex=Lex;
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            if (!$<sphead>1)
            {
              sp_head *sp= lex->sphead;
              // return back to the original memory root ASAP
              sp->init_strings(YYTHD, lex, NULL);
              sp->restore_thd_mem_root(YYTHD);
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              lex->sp_chistics.suid= SP_IS_SUID;//always the definer!
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              lex->et->sphead= lex->sphead;
              lex->sphead= NULL;
            }
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            if (!lex->et_compile_phase)
            {
              lex->et->init_body(YYTHD);
            }
          }
      ;
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ev_sql_stmt_inner:
          sp_proc_stmt_statement
        | sp_proc_stmt_return
        | sp_proc_stmt_if
        | sp_proc_stmt_case_simple
        | sp_proc_stmt_case
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        | sp_labeled_control
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        | sp_proc_stmt_unlabeled
        | sp_proc_stmt_leave
        | sp_proc_stmt_iterate
        | sp_proc_stmt_label
        | sp_proc_stmt_goto
        | sp_proc_stmt_open
        | sp_proc_stmt_fetch
        | sp_proc_stmt_close
      ;
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clear_privileges:
        /* Nothing */
        {
          LEX *lex=Lex;
          lex->users_list.empty();
          lex->columns.empty();
          lex->grant= lex->grant_tot_col= 0;
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	  lex->all_privileges= 0;
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          lex->select_lex.db= 0;
          lex->ssl_type= SSL_TYPE_NOT_SPECIFIED;
          lex->ssl_cipher= lex->x509_subject= lex->x509_issuer= 0;
          bzero((char *)&(lex->mqh),sizeof(lex->mqh));
        }
        ;

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sp_name:
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	  ident '.' ident
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	  {
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            if (!$1.str || check_db_name($1.str))
            {
	      my_error(ER_WRONG_DB_NAME, MYF(0), $1.str);
	      YYABORT;
	    }
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	    if (check_routine_name($3))
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            {
	      my_error(ER_SP_WRONG_NAME, MYF(0), $3.str);
	      YYABORT;
	    }
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	    $$= new sp_name($1, $3);
	    $$->init_qname(YYTHD);
	  }
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	| ident
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	  {
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	    if (check_routine_name($1))
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            {
	      my_error(ER_SP_WRONG_NAME, MYF(0), $1.str);
	      YYABORT;
	    }
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	    $$= sp_name_current_db_new(YYTHD, $1);
	  }
	;

create_function_tail:
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	  RETURNS_SYM udf_type SONAME_SYM TEXT_STRING_sys
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	  {
	    LEX *lex=Lex;
	    lex->sql_command = SQLCOM_CREATE_FUNCTION;
	    lex->udf.name = lex->spname->m_name;
	    lex->udf.returns=(Item_result) $2;
	    lex->udf.dl=$4.str;
	  }
	| '('
	  {
	    LEX *lex= Lex;
	    sp_head *sp;

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            /* 
              First check if AGGREGATE was used, in that case it's a
              syntax error.
            */
            if (lex->udf.type == UDFTYPE_AGGREGATE)
            {
              my_error(ER_SP_NO_AGGREGATE, MYF(0));
              YYABORT;
            }

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	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "FUNCTION");
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	      YYABORT;
	    }
	    /* Order is important here: new - reset - init */
	    sp= new sp_head();
	    sp->reset_thd_mem_root(YYTHD);
	    sp->init(lex);

	    sp->m_type= TYPE_ENUM_FUNCTION;
	    lex->sphead= sp;
	    /*
	     * We have to turn of CLIENT_MULTI_QUERIES while parsing a
	     * stored procedure, otherwise yylex will chop it into pieces
	     * at each ';'.
	     */
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            $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
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	    YYTHD->client_capabilities &= ~CLIENT_MULTI_QUERIES;
	    lex->sphead->m_param_begin= lex->tok_start+1;
	  }
          sp_fdparam_list ')'
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_end= lex->tok_start;
	  }
	  RETURNS_SYM
	  {
	    LEX *lex= Lex;
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	    lex->charset= NULL;
	    lex->length= lex->dec= NULL;
	    lex->interval_list.empty();
	    lex->type= 0;
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	  }
	  type
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
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            if (sp->fill_field_definition(YYTHD, lex,
                                          (enum enum_field_types) $8,
                                          &sp->m_return_field_def))
              YYABORT;
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	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  }
	  sp_c_chistics
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_chistics= &lex->sp_chistics;
	    lex->sphead->m_body_begin= lex->tok_start;
	  }
	  sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

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            if (sp->is_not_allowed_in_function("function"))
              YYABORT;

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	    if (sp->check_backpatch(YYTHD))
	      YYABORT;
	    lex->sql_command= SQLCOM_CREATE_SPFUNCTION;
	    sp->init_strings(YYTHD, lex, lex->spname);
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            if (!(sp->m_flags & sp_head::HAS_RETURN))
            {
              my_error(ER_SP_NORETURN, MYF(0), sp->m_qname.str);
              YYABORT;
            }
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	    /* Restore flag if it was cleared above */
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	    YYTHD->client_capabilities |= $<ulong_num>2;
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	    sp->restore_thd_mem_root(YYTHD);
	  }
	;

sp_a_chistics:
	  /* Empty */ {}
	| sp_a_chistics sp_chistic {}
	;

sp_c_chistics:
	  /* Empty */ {}
	| sp_c_chistics sp_c_chistic {}
	;

/* Characteristics for both create and alter */
sp_chistic:
	  COMMENT_SYM TEXT_STRING_sys
	  { Lex->sp_chistics.comment= $2; }
	| LANGUAGE_SYM SQL_SYM
	  { /* Just parse it, we only have one language for now. */ }
	| NO_SYM SQL_SYM
	  { Lex->sp_chistics.daccess= SP_NO_SQL; }
	| CONTAINS_SYM SQL_SYM
	  { Lex->sp_chistics.daccess= SP_CONTAINS_SQL; }
	| READS_SYM SQL_SYM DATA_SYM
	  { Lex->sp_chistics.daccess= SP_READS_SQL_DATA; }
	| MODIFIES_SYM SQL_SYM DATA_SYM
	  { Lex->sp_chistics.daccess= SP_MODIFIES_SQL_DATA; }
	| sp_suid
	  { }
	;

/* Create characteristics */
sp_c_chistic:
	  sp_chistic            { }
	| DETERMINISTIC_SYM     { Lex->sp_chistics.detistic= TRUE; }
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	| not DETERMINISTIC_SYM { Lex->sp_chistics.detistic= FALSE; }
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	;

sp_suid:
	  SQL_SYM SECURITY_SYM DEFINER_SYM
	  {
	    Lex->sp_chistics.suid= SP_IS_SUID;
	  }
	| SQL_SYM SECURITY_SYM INVOKER_SYM
	  {
	    Lex->sp_chistics.suid= SP_IS_NOT_SUID;
	  }
	;

call:
	  CALL_SYM sp_name
	  {
	    LEX *lex = Lex;

	    lex->sql_command= SQLCOM_CALL;
	    lex->spname= $2;
	    lex->value_list.empty();
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	    sp_add_used_routine(lex, YYTHD, $2, TYPE_ENUM_PROCEDURE);
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	  }
          '(' sp_cparam_list ')' {}
	;

/* CALL parameters */
sp_cparam_list:
	  /* Empty */
	| sp_cparams
	;

sp_cparams:
	  sp_cparams ',' expr
	  {
	    Lex->value_list.push_back($3);
	  }
	| expr
	  {
	    Lex->value_list.push_back($1);
	  }
	;

/* Stored FUNCTION parameter declaration list */
sp_fdparam_list:
	  /* Empty */
	| sp_fdparams
	;

sp_fdparams:
	  sp_fdparams ',' sp_fdparam
	| sp_fdparam
	;

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sp_init_param:
	  /* Empty */
	  {
	    LEX *lex= Lex;

	    lex->length= 0;
	    lex->dec= 0;
	    lex->type= 0;
	  
	    lex->default_value= 0;
	    lex->on_update_value= 0;
	  
	    lex->comment= null_lex_str;
	    lex->charset= NULL;
	  
	    lex->interval_list.empty();
	    lex->uint_geom_type= 0;
	  }
	;

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sp_fdparam:
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	  ident sp_init_param type
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	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$1, TRUE))
	    {
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	      my_error(ER_SP_DUP_PARAM, MYF(0), $1.str);
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	      YYABORT;
	    }
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	    sp_pvar_t *pvar= spc->push_pvar(&$1, (enum enum_field_types)$3,
                                            sp_param_in);

            if (lex->sphead->fill_field_definition(YYTHD, lex,
                                                   (enum enum_field_types) $3,
                                                   &pvar->field_def))
            {
              YYABORT;
            }
            pvar->field_def.field_name= pvar->name.str;
            pvar->field_def.pack_flag |= FIELDFLAG_MAYBE_NULL;
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	  }
	;

/* Stored PROCEDURE parameter declaration list */
sp_pdparam_list:
	  /* Empty */
	| sp_pdparams
	;

sp_pdparams:
	  sp_pdparams ',' sp_pdparam
	| sp_pdparam
	;

sp_pdparam:
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	  sp_opt_inout sp_init_param ident type
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	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

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	    if (spc->find_pvar(&$3, TRUE))
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	    {
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	      my_error(ER_SP_DUP_PARAM, MYF(0), $3.str);
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	      YYABORT;
	    }
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	    sp_pvar_t *pvar= spc->push_pvar(&$3, (enum enum_field_types)$4,
			                    (sp_param_mode_t)$1);

            if (lex->sphead->fill_field_definition(YYTHD, lex,
                                                   (enum enum_field_types) $4,
                                                   &pvar->field_def))
            {
              YYABORT;
            }
            pvar->field_def.field_name= pvar->name.str;
            pvar->field_def.pack_flag |= FIELDFLAG_MAYBE_NULL;
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	  }
	;

sp_opt_inout:
	  /* Empty */ { $$= sp_param_in; }
	| IN_SYM      { $$= sp_param_in; }
	| OUT_SYM     { $$= sp_param_out; }
	| INOUT_SYM   { $$= sp_param_inout; }
	;

sp_proc_stmts:
	  /* Empty */ {}
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	| sp_proc_stmts  sp_proc_stmt ';'
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	;

sp_proc_stmts1:
	  sp_proc_stmt ';' {}
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	| sp_proc_stmts1  sp_proc_stmt ';'
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	;

sp_decls:
	  /* Empty */
	  {
	    $$.vars= $$.conds= $$.hndlrs= $$.curs= 0;
	  }
	| sp_decls sp_decl ';'
	  {
	    /* We check for declarations out of (standard) order this way
	       because letting the grammar rules reflect it caused tricky
	       shift/reduce conflicts with the wrong result. (And we get
	       better error handling this way.) */
	    if (($2.vars || $2.conds) && ($1.curs || $1.hndlrs))
	    { /* Variable or condition following cursor or handler */
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	      my_message(ER_SP_VARCOND_AFTER_CURSHNDLR,
                         ER(ER_SP_VARCOND_AFTER_CURSHNDLR), MYF(0));
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	      YYABORT;
	    }
	    if ($2.curs && $1.hndlrs)
	    { /* Cursor following handler */
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	      my_message(ER_SP_CURSOR_AFTER_HANDLER,
                         ER(ER_SP_CURSOR_AFTER_HANDLER), MYF(0));
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	      YYABORT;
	    }
	    $$.vars= $1.vars + $2.vars;
	    $$.conds= $1.conds + $2.conds;
	    $$.hndlrs= $1.hndlrs + $2.hndlrs;
	    $$.curs= $1.curs + $2.curs;
	  }
	;

sp_decl:
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          DECLARE_SYM sp_decl_idents
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          {
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            LEX *lex= Lex;
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            lex->sphead->reset_lex(YYTHD);
            lex->spcont->declare_var_boundary($2);
          }
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          type
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          sp_opt_default
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          {
            LEX *lex= Lex;
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            sp_pcontext *pctx= lex->spcont;
            uint num_vars= pctx->context_pvars();
            enum enum_field_types var_type= (enum enum_field_types) $4;
            Item *dflt_value_item= $5;
            create_field *create_field_op;
            
            if (!dflt_value_item)
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            {
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              dflt_value_item= new Item_null();
              /* QQ Set to the var_type with null_value? */
            }
            
            for (uint i = num_vars-$2 ; i < num_vars ; i++)
            {
              uint var_idx= pctx->pvar_context2index(i);
              sp_pvar_t *pvar= pctx->find_pvar(var_idx);
            
              if (!pvar)
                YYABORT;
            
              pvar->type= var_type;
              pvar->dflt= dflt_value_item;
            
              if (lex->sphead->fill_field_definition(YYTHD, lex, var_type,
                                                     &pvar->field_def))
              {
                YYABORT;
              }
            
              pvar->field_def.field_name= pvar->name.str;
              pvar->field_def.pack_flag |= FIELDFLAG_MAYBE_NULL;
            
              /* The last instruction is responsible for freeing LEX. */

              lex->sphead->add_instr(
                new sp_instr_set(lex->sphead->instructions(), pctx, var_idx,
                                 dflt_value_item, var_type, lex,
                                 (i == num_vars - 1)));
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            }
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            pctx->declare_var_boundary(0);
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            lex->sphead->restore_lex(YYTHD);
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            $$.vars= $2;
            $$.conds= $$.hndlrs= $$.curs= 0;
          }
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	| DECLARE_SYM ident CONDITION_SYM FOR_SYM sp_cond
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_cond(&$2, TRUE))
	    {
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	      my_error(ER_SP_DUP_COND, MYF(0), $2.str);
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	      YYABORT;
	    }
	    YYTHD->lex->spcont->push_cond(&$2, $5);
	    $$.vars= $$.hndlrs= $$.curs= 0;
	    $$.conds= 1;
	  }
	| DECLARE_SYM sp_handler_type HANDLER_SYM FOR_SYM
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_instr_hpush_jump *i=
              new sp_instr_hpush_jump(sp->instructions(), ctx, $2,
	                              ctx->current_pvars());

	    sp->add_instr(i);
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
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	    sp->m_flags|= sp_head::IN_HANDLER;
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	  }
	  sp_hcond_list sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *hlab= lex->spcont->pop_label(); /* After this hdlr */
	    sp_instr_hreturn *i;

	    if ($2 == SP_HANDLER_CONTINUE)
	    {
	      i= new sp_instr_hreturn(sp->instructions(), ctx,
	                              ctx->current_pvars());
	      sp->add_instr(i);
	    }
	    else
	    {  /* EXIT or UNDO handler, just jump to the end of the block */
	      i= new sp_instr_hreturn(sp->instructions(), ctx, 0);

	      sp->add_instr(i);
	      sp->push_backpatch(i, lex->spcont->last_label()); /* Block end */
	    }
	    lex->sphead->backpatch(hlab);
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	    sp->m_flags&= ~sp_head::IN_HANDLER;
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	    $$.vars= $$.conds= $$.curs= 0;
	    $$.hndlrs= $6;
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	    ctx->add_handlers($6);
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	  }
	| DECLARE_SYM ident CURSOR_SYM FOR_SYM sp_cursor_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint offp;
	    sp_instr_cpush *i;

	    if (ctx->find_cursor(&$2, &offp, TRUE))
	    {
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	      my_error(ER_SP_DUP_CURS, MYF(0), $2.str);
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	      delete $5;
	      YYABORT;
	    }
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            i= new sp_instr_cpush(sp->instructions(), ctx, $5,
                                  ctx->current_cursors());
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	    sp->add_instr(i);
	    ctx->push_cursor(&$2);
	    $$.vars= $$.conds= $$.hndlrs= 0;
	    $$.curs= 1;
	  }
	;

sp_cursor_stmt:
	  {
	    Lex->sphead->reset_lex(YYTHD);

	    /* We use statement here just be able to get a better
	       error message. Using 'select' works too, but will then
	       result in a generic "syntax error" if a non-select
	       statement is given. */
	  }
	  statement
	  {
	    LEX *lex= Lex;

	    if (lex->sql_command != SQLCOM_SELECT)
	    {
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	      my_message(ER_SP_BAD_CURSOR_QUERY, ER(ER_SP_BAD_CURSOR_QUERY),
                         MYF(0));
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	      YYABORT;
	    }
	    if (lex->result)
	    {
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	      my_message(ER_SP_BAD_CURSOR_SELECT, ER(ER_SP_BAD_CURSOR_SELECT),
                         MYF(0));
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	      YYABORT;
	    }
	    lex->sp_lex_in_use= TRUE;
	    $$= lex;
	    lex->sphead->restore_lex(YYTHD);
	  }
	;

sp_handler_type:
	  EXIT_SYM      { $$= SP_HANDLER_EXIT; }
	| CONTINUE_SYM  { $$= SP_HANDLER_CONTINUE; }
/*	| UNDO_SYM      { QQ No yet } */
	;

sp_hcond_list:
	  sp_hcond
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
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	    sp_pcontext *ctx= lex->spcont;

	    if (ctx->find_handler($1))
	    {
	      my_message(ER_SP_DUP_HANDLER, ER(ER_SP_DUP_HANDLER), MYF(0));
	      YYABORT;
	    }
	    else
	    {
	      sp_instr_hpush_jump *i=
                (sp_instr_hpush_jump *)sp->last_instruction();
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	      i->add_condition($1);
	      ctx->push_handler($1);
	      $$= 1;
	    }
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	  }
	| sp_hcond_list ',' sp_hcond
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
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	    sp_pcontext *ctx= lex->spcont;

	    if (ctx->find_handler($3))
	    {
	      my_message(ER_SP_DUP_HANDLER, ER(ER_SP_DUP_HANDLER), MYF(0));
	      YYABORT;
	    }
	    else
	    {
	      sp_instr_hpush_jump *i=
	        (sp_instr_hpush_jump *)sp->last_instruction();
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	      i->add_condition($3);
	      ctx->push_handler($3);
	      $$= $1 + 1;
	    }
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	  }
	;

sp_cond:
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	  ulong_num
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	  {			/* mysql errno */
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::number;
	    $$->mysqlerr= $1;
	  }
	| SQLSTATE_SYM opt_value TEXT_STRING_literal
	  {		/* SQLSTATE */
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	    if (!sp_cond_check(&$3))
	    {
	      my_error(ER_SP_BAD_SQLSTATE, MYF(0), $3.str);
	      YYABORT;
	    }
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	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::state;
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	    memcpy($$->sqlstate, $3.str, 5);
	    $$->sqlstate[5]= '\0';
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	  }
	;

opt_value:
	  /* Empty */  {}
	| VALUE_SYM    {}
	;

sp_hcond:
	  sp_cond
	  {
	    $$= $1;
	  }
	| ident			/* CONDITION name */
	  {
	    $$= Lex->spcont->find_cond(&$1);
	    if ($$ == NULL)
	    {
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	      my_error(ER_SP_COND_MISMATCH, MYF(0), $1.str);
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	      YYABORT;
	    }
	  }
	| SQLWARNING_SYM	/* SQLSTATEs 01??? */
	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::warning;
	  }
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	| not FOUND_SYM		/* SQLSTATEs 02??? */
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	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::notfound;
	  }
	| SQLEXCEPTION_SYM	/* All other SQLSTATEs */
	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::exception;
	  }
	;

sp_decl_idents:
	  ident
	  {
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            /* NOTE: field definition is filled in sp_decl section. */

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	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$1, TRUE))
	    {
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	      my_error(ER_SP_DUP_VAR, MYF(0), $1.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$1, (enum_field_types)0, sp_param_in);
	    $$= 1;
	  }
	| sp_decl_idents ',' ident
	  {
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            /* NOTE: field definition is filled in sp_decl section. */

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	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$3, TRUE))
	    {
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	      my_error(ER_SP_DUP_VAR, MYF(0), $3.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$3, (enum_field_types)0, sp_param_in);
	    $$= $1 + 1;
	  }
	;

sp_opt_default:
	  /* Empty */ { $$ = NULL; }
        | DEFAULT expr { $$ = $2; }
	;

sp_proc_stmt:
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	  sp_proc_stmt_statement
        | sp_proc_stmt_return
	| sp_proc_stmt_if
	| sp_proc_stmt_case_simple
        | sp_proc_stmt_case
	| sp_labeled_control
	| sp_proc_stmt_unlabeled
	| sp_proc_stmt_leave
	| sp_proc_stmt_iterate
	| sp_proc_stmt_label
	| sp_proc_stmt_goto
	| sp_proc_stmt_open
	| sp_proc_stmt_fetch
        | sp_proc_stmt_close
        ;

sp_proc_stmt_if:
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        IF { Lex->sphead->new_cont_backpatch(NULL); }
        sp_if END IF
        { Lex->sphead->do_cont_backpatch(); }
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        ;
        
sp_proc_stmt_statement:
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	  {
	    LEX *lex= Lex;

	    lex->sphead->reset_lex(YYTHD);
	    lex->sphead->m_tmp_query= lex->tok_start;
	  }
	  statement
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

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            sp->m_flags|= sp_get_flags_for_command(lex);
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	    if (lex->sql_command == SQLCOM_CHANGE_DB)
	    { /* "USE db" doesn't work in a procedure */
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	      my_error(ER_SP_BADSTATEMENT, MYF(0), "USE");
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	      YYABORT;
	    }
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	    /*
              Don't add an instruction for SET statements, since all
              instructions for them were already added during processing
              of "set" rule.
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	    */
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            DBUG_ASSERT(lex->sql_command != SQLCOM_SET_OPTION ||
                        lex->var_list.is_empty());
            if (lex->sql_command != SQLCOM_SET_OPTION)
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	    {
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              sp_instr_stmt *i=new sp_instr_stmt(sp->instructions(),
                                                 lex->spcont, lex);
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              /* Extract the query statement from the tokenizer:
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                 The end is either lex->tok_end or tok->ptr. */
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              if (lex->ptr - lex->tok_end > 1)
                i->m_query.length= lex->ptr - sp->m_tmp_query;
              else
                i->m_query.length= lex->tok_end - sp->m_tmp_query;
              i->m_query.str= strmake_root(YYTHD->mem_root,
                                           (char *)sp->m_tmp_query,
                                           i->m_query.length);
              sp->add_instr(i);
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            }
	    sp->restore_lex(YYTHD);
          }
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        ;

sp_proc_stmt_return:
        RETURN_SYM 
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          { Lex->sphead->reset_lex(YYTHD); }
          expr
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	  {
	    LEX *lex= Lex;
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	    sp_head *sp= lex->sphead;
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	    if (sp->m_type != TYPE_ENUM_FUNCTION)
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	    {
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	      my_message(ER_SP_BADRETURN, ER(ER_SP_BADRETURN), MYF(0));
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	      YYABORT;
	    }
	    else
	    {
	      sp_instr_freturn *i;

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	      i= new sp_instr_freturn(sp->instructions(), lex->spcont, $3,
                                      sp->m_return_field_def.sql_type, lex);
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	      sp->add_instr(i);
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	      sp->m_flags|= sp_head::HAS_RETURN;
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	    }
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	    sp->restore_lex(YYTHD);
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	  }
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        ;

sp_proc_stmt_case_simple:
	CASE_SYM WHEN_SYM
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	  {
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	    Lex->sphead->m_flags&= ~sp_head::IN_SIMPLE_CASE;
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            Lex->sphead->new_cont_backpatch(NULL);
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	  }
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          sp_case END CASE_SYM { Lex->sphead->do_cont_backpatch(); }
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        ;
        
sp_proc_stmt_case:
          CASE_SYM
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          {
            Lex->sphead->reset_lex(YYTHD);
            Lex->sphead->new_cont_backpatch(NULL);
          }
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          expr WHEN_SYM
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	  {
	    LEX *lex= Lex;
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	    sp_head *sp= lex->sphead;
	    sp_pcontext *parsing_ctx= lex->spcont;
	    int case_expr_id= parsing_ctx->register_case_expr();
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            sp_instr_set_case_expr *i;
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	    if (parsing_ctx->push_case_expr_id(case_expr_id))
              YYABORT;
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            i= new sp_instr_set_case_expr(sp->instructions(),
                                          parsing_ctx,
                                          case_expr_id,
                                          $3,
                                          lex);
            sp->add_cont_backpatch(i);
            sp->add_instr(i);
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	    sp->m_flags|= sp_head::IN_SIMPLE_CASE;
	    sp->restore_lex(YYTHD);
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	  }
	  sp_case END CASE_SYM
	  {
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	    Lex->spcont->pop_case_expr_id();
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            Lex->sphead->do_cont_backpatch();
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	  }
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        ;

sp_proc_stmt_unlabeled:
	  { /* Unlabeled controls get a secret label. */
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	    LEX *lex= Lex;

	    lex->spcont->push_label((char *)"", lex->sphead->instructions());
	  }
	  sp_unlabeled_control
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
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        ;

sp_proc_stmt_leave:
	  LEAVE_SYM label_ident
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	  {
	    LEX *lex= Lex;
	    sp_head *sp = lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (! lab)
	    {
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	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "LEAVE", $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      sp_instr_jump *i;
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	      uint ip= sp->instructions();
	      uint n;

	      n= ctx->diff_handlers(lab->ctx);
	      if (n)
	        sp->add_instr(new sp_instr_hpop(ip++, ctx, n));
	      n= ctx->diff_cursors(lab->ctx);
	      if (n)
	        sp->add_instr(new sp_instr_cpop(ip++, ctx, n));
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	      i= new sp_instr_jump(ip, ctx);
	      sp->push_backpatch(i, lab);  /* Jumping forward */
              sp->add_instr(i);
	    }
	  }
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        ;

sp_proc_stmt_iterate:
	  ITERATE_SYM label_ident
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (! lab || lab->type != SP_LAB_ITER)
	    {
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	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "ITERATE", $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      sp_instr_jump *i;
	      uint ip= sp->instructions();
	      uint n;

	      n= ctx->diff_handlers(lab->ctx);
	      if (n)
	        sp->add_instr(new sp_instr_hpop(ip++, ctx, n));
	      n= ctx->diff_cursors(lab->ctx);
	      if (n)
	        sp->add_instr(new sp_instr_cpop(ip++, ctx, n));
	      i= new sp_instr_jump(ip, ctx, lab->ip); /* Jump back */
              sp->add_instr(i);
	    }
	  }
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        ;

sp_proc_stmt_label:
	  LABEL_SYM IDENT
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	  {
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#ifdef SP_GOTO
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (lab)
	    {
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	      my_error(ER_SP_LABEL_REDEFINE, MYF(0), $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      lab= ctx->push_label($2.str, sp->instructions());
	      lab->type= SP_LAB_GOTO;
	      lab->ctx= ctx;
              sp->backpatch(lab);
	    }
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#else
	    yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
#endif
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	  }
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        ;

sp_proc_stmt_goto:
	  GOTO_SYM IDENT
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	  {
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#ifdef SP_GOTO
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab;
	    sp_instr_jump *i;
	    sp_instr_hpop *ih;
	    sp_instr_cpop *ic;

	    if (sp->m_in_handler)
	    {
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	      my_message(ER_SP_GOTO_IN_HNDLR, ER(ER_SP_GOTO_IN_HNDLR), MYF(0));
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	      YYABORT;
	    }
	    lab= ctx->find_label($2.str);
	    if (! lab)
	    {
	      lab= (sp_label_t *)YYTHD->alloc(sizeof(sp_label_t));
	      lab->name= $2.str;
	      lab->ip= 0;
	      lab->type= SP_LAB_REF;
	      lab->ctx= ctx;

	      ih= new sp_instr_hpop(ip++, ctx, 0);
	      sp->push_backpatch(ih, lab);
	      sp->add_instr(ih);
	      ic= new sp_instr_cpop(ip++, ctx, 0);
	      sp->add_instr(ic);
	      sp->push_backpatch(ic, lab);
	      i= new sp_instr_jump(ip, ctx);
	      sp->push_backpatch(i, lab);  /* Jumping forward */
	      sp->add_instr(i);
	    }
	    else
	    {
	      uint n;

	      n= ctx->diff_handlers(lab->ctx);
	      if (n)
	      {
	        ih= new sp_instr_hpop(ip++, ctx, n);
	        sp->add_instr(ih);
	      }
	      n= ctx->diff_cursors(lab->ctx);
	      if (n)
	      {
	        ic= new sp_instr_cpop(ip++, ctx, n);
	        sp->add_instr(ic);
	      }
	      i= new sp_instr_jump(ip, ctx, lab->ip); /* Jump back */
	      sp->add_instr(i);
	    }
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#else
	    yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
#endif
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	  }
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        ;

sp_proc_stmt_open:
	  OPEN_SYM ident
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_copen *i;

	    if (! lex->spcont->find_cursor(&$2, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
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	      YYABORT;
	    }
	    i= new sp_instr_copen(sp->instructions(), lex->spcont, offset);
	    sp->add_instr(i);
	  }
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        ;

sp_proc_stmt_fetch:
	  FETCH_SYM sp_opt_fetch_noise ident INTO
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_cfetch *i;

	    if (! lex->spcont->find_cursor(&$3, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $3.str);
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	      YYABORT;
	    }
	    i= new sp_instr_cfetch(sp->instructions(), lex->spcont, offset);
	    sp->add_instr(i);
	  }
	  sp_fetch_list
	  { }
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        ;

sp_proc_stmt_close:
	  CLOSE_SYM ident
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_cclose *i;

	    if (! lex->spcont->find_cursor(&$2, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
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	      YYABORT;
	    }
	    i= new sp_instr_cclose(sp->instructions(), lex->spcont,  offset);
	    sp->add_instr(i);
	  }
	;

sp_opt_fetch_noise:
	  /* Empty */
	| NEXT_SYM FROM
	| FROM
	;

sp_fetch_list:
	  ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *spc= lex->spcont;
	    sp_pvar_t *spv;

	    if (!spc || !(spv = spc->find_pvar(&$1)))
	    {
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	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
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	      YYABORT;
	    }
	    else
	    {
	      /* An SP local variable */
	      sp_instr_cfetch *i= (sp_instr_cfetch *)sp->last_instruction();

	      i->add_to_varlist(spv);
	    }
	  }
	|
	  sp_fetch_list ',' ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *spc= lex->spcont;
	    sp_pvar_t *spv;

	    if (!spc || !(spv = spc->find_pvar(&$3)))
	    {
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	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $3.str);
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	      YYABORT;
	    }
	    else
	    {
	      /* An SP local variable */
	      sp_instr_cfetch *i= (sp_instr_cfetch *)sp->last_instruction();

	      i->add_to_varlist(spv);
	    }
	  }
	;

sp_if:
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          { Lex->sphead->reset_lex(YYTHD); }
          expr THEN_SYM
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint ip= sp->instructions();
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	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, ctx,
                                                               $2, lex);
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	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
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            sp->add_cont_backpatch(i);
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            sp->add_instr(i);
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            sp->restore_lex(YYTHD);
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	  }
	  sp_proc_stmts1
	  {
	    sp_head *sp= Lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump *i = new sp_instr_jump(ip, ctx);

	    sp->add_instr(i);
	    sp->backpatch(ctx->pop_label());
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	  }
	  sp_elseifs
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	;

sp_elseifs:
	  /* Empty */
	| ELSEIF_SYM sp_if
	| ELSE sp_proc_stmts1
	;

sp_case:
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	  { Lex->sphead->reset_lex(YYTHD); }
          expr THEN_SYM
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	  {
            LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump_if_not *i;

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	    if (! (sp->m_flags & sp_head::IN_SIMPLE_CASE))
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	      i= new sp_instr_jump_if_not(ip, ctx, $2, lex);
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	    else
	    { /* Simple case: <caseval> = <whenval> */

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	      Item_case_expr *var;
              Item *expr;

              var= new Item_case_expr(ctx->get_current_case_expr_id());

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#ifndef DBUG_OFF
2771
              if (var)
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                var->m_sp= sp;
2773
#endif
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	      expr= new Item_func_eq(var, $2);
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	      i= new sp_instr_jump_if_not(ip, ctx, expr, lex);
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	    }
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
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            sp->add_cont_backpatch(i);
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            sp->add_instr(i);
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            sp->restore_lex(YYTHD);
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	  }
	  sp_proc_stmts1
	  {
	    sp_head *sp= Lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump *i = new sp_instr_jump(ip, ctx);

	    sp->add_instr(i);
	    sp->backpatch(ctx->pop_label());
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	  }
	  sp_whens
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	;
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sp_whens:
	  /* Empty */
	  {
	    sp_head *sp= Lex->sphead;
	    uint ip= sp->instructions();
	    sp_instr_error *i= new sp_instr_error(ip, Lex->spcont,
						  ER_SP_CASE_NOT_FOUND);
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	    sp->add_instr(i);
	  }
	| ELSE sp_proc_stmts1 {}
	| WHEN_SYM sp_case {}
	;
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sp_labeled_control:
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	  label_ident ':'
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	  {
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	    LEX *lex= Lex;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($1.str);

	    if (lab)
	    {
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	      my_error(ER_SP_LABEL_REDEFINE, MYF(0), $1.str);
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	      YYABORT;
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	    }
	    else
	    {
	      lab= lex->spcont->push_label($1.str,
	                                   lex->sphead->instructions());
	      lab->type= SP_LAB_ITER;
	    }
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	  }
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	  sp_unlabeled_control sp_opt_label
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	  {
2838
	    LEX *lex= Lex;
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	    if ($5.str)
	    {
	      sp_label_t *lab= lex->spcont->find_label($5.str);

	      if (!lab ||
	          my_strcasecmp(system_charset_info, $5.str, lab->name) != 0)
	      {
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	        my_error(ER_SP_LABEL_MISMATCH, MYF(0), $5.str);
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	        YYABORT;
	      }
	    }
	    lex->sphead->backpatch(lex->spcont->pop_label());
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	  }
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	;

sp_opt_label:
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        /* Empty  */    { $$= null_lex_str; }
2857
        | label_ident   { $$= $1; }
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	;

sp_unlabeled_control:
	  BEGIN_SYM
	  { /* QQ This is just a dummy for grouping declarations and statements
	       together. No [[NOT] ATOMIC] yet, and we need to figure out how
	       make it coexist with the existing BEGIN COMMIT/ROLLBACK. */
	    LEX *lex= Lex;
	    sp_label_t *lab= lex->spcont->last_label();

	    lab->type= SP_LAB_BEGIN;
	    lex->spcont= lex->spcont->push_context();
	  }
	  sp_decls
	  sp_proc_stmts
	  END
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	  {
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;

  	    sp->backpatch(ctx->last_label());	/* We always have a label */
	    if ($3.hndlrs)
	      sp->add_instr(new sp_instr_hpop(sp->instructions(), ctx,
					      $3.hndlrs));
	    if ($3.curs)
	      sp->add_instr(new sp_instr_cpop(sp->instructions(), ctx,
					      $3.curs));
	    lex->spcont= ctx->pop_context();
	  }
	| LOOP_SYM
	  sp_proc_stmts1 END LOOP_SYM
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	  {
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	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump *i = new sp_instr_jump(ip, lex->spcont, lab->ip);

	    lex->sphead->add_instr(i);
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	  }
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        | WHILE_SYM 
          { Lex->sphead->reset_lex(YYTHD); }
          expr DO_SYM
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	  {
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint ip= sp->instructions();
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, lex->spcont,
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							       $3, lex);
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	    /* Jumping forward */
	    sp->push_backpatch(i, lex->spcont->last_label());
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            sp->new_cont_backpatch(i);
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            sp->add_instr(i);
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            sp->restore_lex(YYTHD);
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	  }
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	  sp_proc_stmts1 END WHILE_SYM
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	  {
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	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump *i = new sp_instr_jump(ip, lex->spcont, lab->ip);

	    lex->sphead->add_instr(i);
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            lex->sphead->do_cont_backpatch();
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	  }
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        | REPEAT_SYM sp_proc_stmts1 UNTIL_SYM 
          { Lex->sphead->reset_lex(YYTHD); }
          expr END REPEAT_SYM
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	  {
	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, lex->spcont,
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                                                               $5, lab->ip,
                                                               lex);
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            lex->sphead->add_instr(i);
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            lex->sphead->restore_lex(YYTHD);
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            /* We can shortcut the cont_backpatch here */
            i->m_cont_dest= ip+1;
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	  }
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	;

trg_action_time:
            BEFORE_SYM 
            { Lex->trg_chistics.action_time= TRG_ACTION_BEFORE; }
          | AFTER_SYM 
            { Lex->trg_chistics.action_time= TRG_ACTION_AFTER; }
          ;

trg_event:
            INSERT 
            { Lex->trg_chistics.event= TRG_EVENT_INSERT; }
          | UPDATE_SYM
            { Lex->trg_chistics.event= TRG_EVENT_UPDATE; }
          | DELETE_SYM
            { Lex->trg_chistics.event= TRG_EVENT_DELETE; }
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          ;
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/*
  This part of the parser contains common code for all TABLESPACE
  commands.
  CREATE TABLESPACE name ...
  ALTER TABLESPACE name CHANGE DATAFILE ...
  ALTER TABLESPACE name ADD DATAFILE ...
  ALTER TABLESPACE name access_mode
  CREATE LOGFILE GROUP name ...
  ALTER LOGFILE GROUP name ADD UNDOFILE ..
  ALTER LOGFILE GROUP name ADD REDOFILE ..
  DROP TABLESPACE name
  DROP LOGFILE GROUP name
*/
change_tablespace_access:
          tablespace_name
          ts_access_mode
          ;

change_tablespace_info:
          tablespace_name
          CHANGE ts_datafile
          change_ts_option_list
          ;

tablespace_info:
          tablespace_name
          ADD ts_datafile
          opt_logfile_group_name
          tablespace_option_list
          ;

opt_logfile_group_name:
          /* empty */ {}
          | USE_SYM LOGFILE_SYM GROUP ident
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->logfile_group_name= $4.str;
          };

alter_tablespace_info:
          tablespace_name
          ADD ts_datafile
          alter_tablespace_option_list 
	  { 
	    Lex->alter_tablespace_info->ts_alter_tablespace_type= ALTER_TABLESPACE_ADD_FILE; 
          }
          |
          tablespace_name
          DROP ts_datafile
          alter_tablespace_option_list 
	  { 
	    Lex->alter_tablespace_info->ts_alter_tablespace_type= ALTER_TABLESPACE_DROP_FILE; 
          };

logfile_group_info:
          logfile_group_name
          add_log_file
          logfile_group_option_list
          ;

alter_logfile_group_info:
          logfile_group_name
          add_log_file
          alter_logfile_group_option_list
          ;

add_log_file:
          ADD lg_undofile
          | ADD lg_redofile
          ;

change_ts_option_list:
          /* empty */ {}
          change_ts_options
          ;

change_ts_options:
          change_ts_option
          | change_ts_options change_ts_option
          | change_ts_options ',' change_ts_option
          ;

change_ts_option:
          opt_ts_initial_size
          | opt_ts_autoextend_size
          | opt_ts_max_size
          ;

tablespace_option_list:
          /* empty */ {}
          tablespace_options
          ;

tablespace_options:
          tablespace_option
          | tablespace_options tablespace_option
          | tablespace_options ',' tablespace_option
          ;

tablespace_option:
          opt_ts_initial_size
          | opt_ts_autoextend_size
          | opt_ts_max_size
          | opt_ts_extent_size
          | opt_ts_nodegroup
          | opt_ts_engine
          | ts_wait
          | opt_ts_comment
          ;

alter_tablespace_option_list:
          /* empty */ {}
          alter_tablespace_options
          ;

alter_tablespace_options:
          alter_tablespace_option
          | alter_tablespace_options alter_tablespace_option
          | alter_tablespace_options ',' alter_tablespace_option
          ;

alter_tablespace_option:
          opt_ts_initial_size
          | opt_ts_autoextend_size
          | opt_ts_max_size
          | opt_ts_engine
          | ts_wait
          ;

logfile_group_option_list:
          /* empty */ {}
          logfile_group_options
          ;

logfile_group_options:
          logfile_group_option
          | logfile_group_options logfile_group_option
          | logfile_group_options ',' logfile_group_option
          ;

logfile_group_option:
          opt_ts_initial_size
          | opt_ts_undo_buffer_size
          | opt_ts_redo_buffer_size
          | opt_ts_nodegroup
          | opt_ts_engine
          | ts_wait
          | opt_ts_comment
          ;

alter_logfile_group_option_list:
          /* empty */ {}
          alter_logfile_group_options
          ;

alter_logfile_group_options:
          alter_logfile_group_option
          | alter_logfile_group_options alter_logfile_group_option
          | alter_logfile_group_options ',' alter_logfile_group_option
          ;

alter_logfile_group_option:
          opt_ts_initial_size
          | opt_ts_engine
          | ts_wait
          ;


ts_datafile:
          DATAFILE_SYM TEXT_STRING_sys
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->data_file_name= $2.str;
          };

lg_undofile:
          UNDOFILE_SYM TEXT_STRING_sys
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->undo_file_name= $2.str;
          };

lg_redofile:
          REDOFILE_SYM TEXT_STRING_sys
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->redo_file_name= $2.str;
          };

tablespace_name:
          ident
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info= new st_alter_tablespace();
            lex->alter_tablespace_info->tablespace_name= $1.str;
            lex->sql_command= SQLCOM_ALTER_TABLESPACE;
          };

logfile_group_name:
          ident
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info= new st_alter_tablespace();
            lex->alter_tablespace_info->logfile_group_name= $1.str;
            lex->sql_command= SQLCOM_ALTER_TABLESPACE;
          };

ts_access_mode:
          READ_ONLY_SYM
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_access_mode= TS_READ_ONLY;
          }
          | READ_WRITE_SYM
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_access_mode= TS_READ_WRITE;
          }
          | NOT_SYM ACCESSIBLE_SYM
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_access_mode= TS_NOT_ACCESSIBLE;
          };

opt_ts_initial_size:
          INITIAL_SIZE_SYM opt_equal size_number
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->initial_size= $3;
          };

opt_ts_autoextend_size:
          AUTOEXTEND_SIZE_SYM opt_equal size_number
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->autoextend_size= $3;
          };

opt_ts_max_size:
          MAX_SIZE_SYM opt_equal size_number
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->max_size= $3;
          };

opt_ts_extent_size:
          EXTENT_SIZE_SYM opt_equal size_number
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->extent_size= $3;
          };

opt_ts_undo_buffer_size:
          UNDO_BUFFER_SIZE_SYM opt_equal size_number
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->undo_buffer_size= $3;
          };

opt_ts_redo_buffer_size:
          REDO_BUFFER_SIZE_SYM opt_equal size_number
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->redo_buffer_size= $3;
          };

opt_ts_nodegroup:
          NODEGROUP_SYM opt_equal ulong_num
          {
            LEX *lex= Lex;
            if (lex->alter_tablespace_info->nodegroup_id != UNDEF_NODEGROUP)
            {
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              my_error(ER_FILEGROUP_OPTION_ONLY_ONCE,MYF(0),"NODEGROUP");
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              YYABORT;
            }
            lex->alter_tablespace_info->nodegroup_id= $3;
          };

opt_ts_comment:
          COMMENT_SYM opt_equal TEXT_STRING_sys
          {
            LEX *lex= Lex;
            if (lex->alter_tablespace_info->ts_comment != NULL)
            {
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              my_error(ER_FILEGROUP_OPTION_ONLY_ONCE,MYF(0),"COMMENT");
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              YYABORT;
            }
            lex->alter_tablespace_info->ts_comment= $3.str;
          };

opt_ts_engine:
          opt_storage ENGINE_SYM opt_equal storage_engines
          {
            LEX *lex= Lex;
            if (lex->alter_tablespace_info->storage_engine != DB_TYPE_UNKNOWN)
            {
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              my_error(ER_FILEGROUP_OPTION_ONLY_ONCE,MYF(0),
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                       "STORAGE ENGINE");
              YYABORT;
            }
            lex->alter_tablespace_info->storage_engine= $4->db_type;
          };

opt_ts_wait:
          /* empty */ 
          | ts_wait
          ;

ts_wait:
          WAIT_SYM
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->wait_until_completed= TRUE;
          }
          | NO_WAIT_SYM
          {
            LEX *lex= Lex;
            if (!(lex->alter_tablespace_info->wait_until_completed))
            {
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              my_error(ER_FILEGROUP_OPTION_ONLY_ONCE,MYF(0),"NO_WAIT");
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              YYABORT;
            }
            lex->alter_tablespace_info->wait_until_completed= FALSE;
          };

size_number:
          ulong_num { $$= $1;}
          | IDENT
          {
            ulonglong number, test_number;
            uint text_shift_number= 0;
            longlong prefix_number;
            char *start_ptr= $1.str;
            uint str_len= strlen(start_ptr);
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            char *end_ptr= start_ptr + str_len;
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            int error;
            prefix_number= my_strtoll10(start_ptr, &end_ptr, &error);
            if ((start_ptr + str_len - 1) == end_ptr)
            {
              switch (end_ptr[0])
              {
                case 'g':
                case 'G':
                  text_shift_number+=10;
                case 'm':
                case 'M':
                  text_shift_number+=10;
                case 'k':
                case 'K':
                  text_shift_number+=10;
                  break;
                default:
                {
                  my_error(ER_WRONG_SIZE_NUMBER, MYF(0));
                  YYABORT;
                }
              }
              if (prefix_number >> 31)
              {
                my_error(ER_SIZE_OVERFLOW_ERROR, MYF(0));
                YYABORT;
              }
              number= prefix_number << text_shift_number;
            }
            else
            {
              my_error(ER_WRONG_SIZE_NUMBER, MYF(0));
              YYABORT;
            }
            $$= number;
          }
          ;

/*
  End tablespace part
*/
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create2:
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        '(' create2a {}
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        | opt_create_table_options
          opt_partitioning {} 
          create3 {}
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        | LIKE table_ident
          {
            LEX *lex=Lex;
            if (!(lex->name= (char *)$2))
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              YYABORT;
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          }
        | '(' LIKE table_ident ')'
          {
            LEX *lex=Lex;
            if (!(lex->name= (char *)$3))
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              YYABORT;
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          }
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        ;
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create2a:
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        field_list ')' opt_create_table_options
          opt_partitioning {}
          create3 {}
        |  opt_partitioning {}
           create_select ')'
           { Select->set_braces(1);} union_opt {}
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        ;
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create3:
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	/* empty */ {}
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	| opt_duplicate opt_as     create_select
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          { Select->set_braces(0);} union_clause {}
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	| opt_duplicate opt_as '(' create_select ')'
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          { Select->set_braces(1);} union_opt {}
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        ;

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/*
 This part of the parser is about handling of the partition information.

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 It's first version was written by Mikael Ronström with lots of answers to
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 questions provided by Antony Curtis.

 The partition grammar can be called from three places.
 1) CREATE TABLE ... PARTITION ..
 2) ALTER TABLE table_name PARTITION ...
 3) PARTITION ...

 The first place is called when a new table is created from a MySQL client.
 The second place is called when a table is altered with the ALTER TABLE
 command from a MySQL client.
 The third place is called when opening an frm file and finding partition
 info in the .frm file. It is necessary to avoid allowing PARTITION to be
 an allowed entry point for SQL client queries. This is arranged by setting
 some state variables before arriving here.

 To be able to handle errors we will only set error code in this code
 and handle the error condition in the function calling the parser. This
 is necessary to ensure we can also handle errors when calling the parser
 from the openfrm function.
*/
opt_partitioning:
        /* empty */ {}
        | partitioning
        ;

partitioning:
        PARTITION_SYM
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        {
          LEX *lex= Lex;
          lex->part_info= new partition_info();
          if (!lex->part_info)
          {
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            mem_alloc_error(sizeof(partition_info));
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            YYABORT;
          }
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          if (lex->sql_command == SQLCOM_ALTER_TABLE)
          {
            lex->alter_info.flags|= ALTER_PARTITION;
          }
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        }
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        partition
        ;

partition_entry:
        PARTITION_SYM
        {
          LEX *lex= Lex;
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          if (!lex->part_info)
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          {
            yyerror(ER(ER_PARTITION_ENTRY_ERROR));
            YYABORT;
          }
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          /*
            We enter here when opening the frm file to translate
            partition info string into part_info data structure.
          */
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        }
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        partition {}
        ;
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partition:
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        BY part_type_def opt_no_parts {} opt_sub_part {} part_defs
        ;
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part_type_def:
        opt_linear KEY_SYM '(' part_field_list ')'
        {
          LEX *lex= Lex;
          lex->part_info->list_of_part_fields= TRUE;
          lex->part_info->part_type= HASH_PARTITION;
        }
        | opt_linear HASH_SYM
        { Lex->part_info->part_type= HASH_PARTITION; }
        part_func {}
        | RANGE_SYM
        { Lex->part_info->part_type= RANGE_PARTITION; }
        part_func {}
        | LIST_SYM
        { Lex->part_info->part_type= LIST_PARTITION; }
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        part_func {}
        ;
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opt_linear:
        /* empty */ {}
        | LINEAR_SYM
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        { Lex->part_info->linear_hash_ind= TRUE;}
        ;
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part_field_list:
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        /* empty */ {}
        | part_field_item_list {}
        ;

part_field_item_list:
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        part_field_item {}
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        | part_field_item_list ',' part_field_item {}
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        ;
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part_field_item:
        ident
        {
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          if (Lex->part_info->part_field_list.push_back($1.str))
          {
            mem_alloc_error(1);
            YYABORT;
          }
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        }
        ;
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part_func:
        '(' remember_name part_func_expr remember_end ')'
        {
          LEX *lex= Lex;
          uint expr_len= (uint)($4 - $2) - 1;
          lex->part_info->list_of_part_fields= FALSE;
          lex->part_info->part_expr= $3;
          lex->part_info->part_func_string= $2+1;
          lex->part_info->part_func_len= expr_len;
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        }
        ;
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sub_part_func:
        '(' remember_name part_func_expr remember_end ')'
        {
          LEX *lex= Lex;
          uint expr_len= (uint)($4 - $2) - 1;
          lex->part_info->list_of_subpart_fields= FALSE;
          lex->part_info->subpart_expr= $3;
          lex->part_info->subpart_func_string= $2+1;
          lex->part_info->subpart_func_len= expr_len;
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        }
        ;
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opt_no_parts:
        /* empty */ {}
        | PARTITIONS_SYM ulong_num 
        { 
          uint no_parts= $2;
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          LEX *lex= Lex;
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          if (no_parts == 0)
          {
            my_error(ER_NO_PARTS_ERROR, MYF(0), "partitions");
            YYABORT;
          }
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          lex->part_info->no_parts= no_parts;
          lex->part_info->use_default_no_partitions= FALSE;
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        }
        ;
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opt_sub_part:
        /* empty */ {}
        | SUBPARTITION_SYM BY opt_linear HASH_SYM sub_part_func
        { Lex->part_info->subpart_type= HASH_PARTITION; }
        opt_no_subparts {}
        | SUBPARTITION_SYM BY opt_linear KEY_SYM
          '(' sub_part_field_list ')'
        {
          LEX *lex= Lex;
          lex->part_info->subpart_type= HASH_PARTITION;
          lex->part_info->list_of_subpart_fields= TRUE;
        }
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        opt_no_subparts {}
        ;
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sub_part_field_list:
        sub_part_field_item {}
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        | sub_part_field_list ',' sub_part_field_item {}
        ;
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sub_part_field_item:
        ident
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        {
          if (Lex->part_info->subpart_field_list.push_back($1.str))
          {
            mem_alloc_error(1);
            YYABORT;
          }
        }
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        ;
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part_func_expr:
        bit_expr
        {
          LEX *lex= Lex;
          bool not_corr_func;
          not_corr_func= !lex->safe_to_cache_query;
          lex->safe_to_cache_query= 1;
          if (not_corr_func)
          {
            yyerror(ER(ER_CONST_EXPR_IN_PARTITION_FUNC_ERROR));
            YYABORT;
          }
          $$=$1;
        }
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        ;
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opt_no_subparts:
        /* empty */ {}
        | SUBPARTITIONS_SYM ulong_num
        {
          uint no_parts= $2;
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          LEX *lex= Lex;
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          if (no_parts == 0)
          {
            my_error(ER_NO_PARTS_ERROR, MYF(0), "subpartitions");
            YYABORT;
          }
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          lex->part_info->no_subparts= no_parts;
          lex->part_info->use_default_no_subpartitions= FALSE;
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        }
        ;
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part_defs:
        /* empty */
        {}
        | '(' part_def_list ')'
        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
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          uint count_curr_parts= part_info->partitions.elements;
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          if (part_info->no_parts != 0)
          {
            if (part_info->no_parts !=
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                count_curr_parts)
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            {
              yyerror(ER(ER_PARTITION_WRONG_NO_PART_ERROR));
              YYABORT;
            }
          }
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          else if (count_curr_parts > 0)
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          {
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            part_info->no_parts= count_curr_parts;
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          }
          part_info->count_curr_subparts= 0;
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        }
        ;
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part_def_list:
        part_definition {}
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        | part_def_list ',' part_definition {}
        ;
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part_definition:
        PARTITION_SYM
        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
          partition_element *p_elem= new partition_element();
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          uint part_id= part_info->partitions.elements +
                        part_info->temp_partitions.elements;
          enum partition_state part_state;

          if (part_info->part_state)
            part_state= (enum partition_state)part_info->part_state[part_id];
          else
            part_state= PART_NORMAL;
          switch (part_state)
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          {
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            case PART_TO_BE_DROPPED:
            /*
              This part is currently removed so we keep it in a
              temporary list for REPAIR TABLE to be able to handle
              failures during drop partition process.
            */
            case PART_TO_BE_ADDED:
            /*
              This part is currently being added so we keep it in a
              temporary list for REPAIR TABLE to be able to handle
              failures during add partition process.
            */
              if (!p_elem || part_info->temp_partitions.push_back(p_elem))
              {
                mem_alloc_error(sizeof(partition_element));
                YYABORT;
              }
              break;
            case PART_IS_ADDED:
            /*
              Part has been added and is now a normal partition
            */
            case PART_TO_BE_REORGED:
            /*
              This part is currently reorganised, it is still however
              used so we keep it in the list of partitions. We do
              however need the state to be able to handle REPAIR TABLE
              after failures in the reorganisation process.
            */
            case PART_REORGED_DROPPED:
            /*
              This part is currently reorganised as part of a
              COALESCE PARTITION and it will be dropped without a new
              replacement partition after completing the reorganisation.
            */
            case PART_CHANGED:
            /*
              This part is currently split or merged as part of ADD
              PARTITION for a hash partition or as part of COALESCE
              PARTITION for a hash partitioned table.
            */
            case PART_IS_CHANGED:
            /*
              This part has been split or merged as part of ADD
              PARTITION for a hash partition or as part of COALESCE
              PARTITION for a hash partitioned table.
            */
            case PART_NORMAL:
              if (!p_elem || part_info->partitions.push_back(p_elem))
              {
                mem_alloc_error(sizeof(partition_element));
                YYABORT;
              }
              break;
            default:
              mem_alloc_error((part_id * 1000) + part_state);
              YYABORT;
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          }
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          p_elem->part_state= part_state;
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          part_info->curr_part_elem= p_elem;
          part_info->current_partition= p_elem;
          part_info->use_default_partitions= FALSE;
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          part_info->use_default_no_partitions= FALSE;
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        }
        part_name {}
        opt_part_values {}
        opt_part_options {}
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        opt_sub_partition {}
        ;
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part_name:
        ident_or_text
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        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
          partition_element *p_elem= part_info->curr_part_elem;
          p_elem->partition_name= $1.str;
        }
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        ;
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opt_part_values:
        /* empty */
        {
          LEX *lex= Lex;
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          if (!is_partition_management(lex))
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          {
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            if (lex->part_info->part_type == RANGE_PARTITION)
            {
              my_error(ER_PARTITION_REQUIRES_VALUES_ERROR, MYF(0),
              "RANGE", "LESS THAN");
              YYABORT;
            }
            if (lex->part_info->part_type == LIST_PARTITION)
            {
              my_error(ER_PARTITION_REQUIRES_VALUES_ERROR, MYF(0),
              "LIST", "IN");
              YYABORT;
            }
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          }
        }
        | VALUES LESS_SYM THAN_SYM part_func_max
        {
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          LEX *lex= Lex;
          if (!is_partition_management(lex))
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          {
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            if (Lex->part_info->part_type != RANGE_PARTITION)
            {
              my_error(ER_PARTITION_WRONG_VALUES_ERROR, MYF(0),
              "RANGE", "LESS THAN");
              YYABORT;
            }
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          }
        }
        | VALUES IN_SYM '(' part_list_func ')'
        {
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          LEX *lex= Lex;
          if (!is_partition_management(lex))
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          {
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            if (Lex->part_info->part_type != LIST_PARTITION)
            {
              my_error(ER_PARTITION_WRONG_VALUES_ERROR, MYF(0),
              "LIST", "IN");
              YYABORT;
            }
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          }
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        }
        ;
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part_func_max:
        MAX_VALUE_SYM
        {
          LEX *lex= Lex;
          if (lex->part_info->defined_max_value)
          {
            yyerror(ER(ER_PARTITION_MAXVALUE_ERROR));
            YYABORT;
          }
          lex->part_info->defined_max_value= TRUE;
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          lex->part_info->curr_part_elem->range_value= LONGLONG_MAX;
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        }
        | part_range_func
        {
          if (Lex->part_info->defined_max_value)
          {
            yyerror(ER(ER_PARTITION_MAXVALUE_ERROR));
            YYABORT;
          }
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        }
        ;
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part_range_func:
        '(' part_bit_expr ')' 
        {
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          Lex->part_info->curr_part_elem->range_value= $2;
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        }
        ;
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part_list_func:
        part_list_item {}
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        | part_list_func ',' part_list_item {}
        ;
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part_list_item:
        part_bit_expr
        {
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          longlong *value_ptr;
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          if (!(value_ptr= (longlong*)sql_alloc(sizeof(longlong))) ||
              ((*value_ptr= $1, FALSE) ||
     Lex->part_info->curr_part_elem->list_val_list.push_back(value_ptr)))
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          {
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            mem_alloc_error(sizeof(longlong));
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            YYABORT;
          }
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        }
        ;
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part_bit_expr:
        bit_expr
        {
          Item *part_expr= $1;
          bool not_corr_func;
          LEX *lex= Lex;
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          THD *thd= YYTHD;
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          longlong item_value;
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          Name_resolution_context *context= &lex->current_select->context;
          TABLE_LIST *save_list= context->table_list;
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          const char *save_where= thd->where;
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          context->table_list= 0;
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          thd->where= "partition function";
          if (part_expr->fix_fields(YYTHD, (Item**)0) ||
              ((context->table_list= save_list), FALSE) ||
              (!part_expr->const_item()) ||
              (!lex->safe_to_cache_query))
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          {
            yyerror(ER(ER_NO_CONST_EXPR_IN_RANGE_OR_LIST_ERROR));
            YYABORT;
          }
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          thd->where= save_where;
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          if (part_expr->result_type() != INT_RESULT)
          {
            yyerror(ER(ER_INCONSISTENT_TYPE_OF_FUNCTIONS_ERROR));
            YYABORT;
          }
          item_value= part_expr->val_int();
          $$= item_value; 
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        }
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        ;
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opt_sub_partition:
        /* empty */ {}
        | '(' sub_part_list ')'
        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
          if (part_info->no_subparts != 0)
          {
            if (part_info->no_subparts !=
                part_info->count_curr_subparts)
            {
              yyerror(ER(ER_PARTITION_WRONG_NO_SUBPART_ERROR));
              YYABORT;
            }
          }
          else if (part_info->count_curr_subparts > 0)
          {
            part_info->no_subparts= part_info->count_curr_subparts;
          }
          part_info->count_curr_subparts= 0;
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        }
        ;
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sub_part_list:
        sub_part_definition {}
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        | sub_part_list ',' sub_part_definition {}
        ;
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sub_part_definition:
        SUBPARTITION_SYM
        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
          partition_element *p_elem= new partition_element();
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          if (!p_elem ||
           part_info->current_partition->subpartitions.push_back(p_elem))
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          {
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            mem_alloc_error(sizeof(partition_element));
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            YYABORT;
          }
          part_info->curr_part_elem= p_elem;
          part_info->use_default_subpartitions= FALSE;
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          part_info->use_default_no_subpartitions= FALSE;
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          part_info->count_curr_subparts++;
        }
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        sub_name opt_part_options {}
        ;
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sub_name:
        ident_or_text
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        { Lex->part_info->curr_part_elem->partition_name= $1.str; }
        ;
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opt_part_options:
       /* empty */ {}
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       | opt_part_option_list {}
       ;
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opt_part_option_list:
       opt_part_option_list opt_part_option {}
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       | opt_part_option {}
       ;
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opt_part_option:
        TABLESPACE opt_equal ident_or_text
        { Lex->part_info->curr_part_elem->tablespace_name= $3.str; }
        | opt_storage ENGINE_SYM opt_equal storage_engines
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        {
          LEX *lex= Lex;
          lex->part_info->curr_part_elem->engine_type= $4;
          lex->part_info->default_engine_type= $4;
        }
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        | NODEGROUP_SYM opt_equal ulong_num
        { Lex->part_info->curr_part_elem->nodegroup_id= $3; }
        | MAX_ROWS opt_equal ulonglong_num
        { Lex->part_info->curr_part_elem->part_max_rows= $3; }
        | MIN_ROWS opt_equal ulonglong_num
        { Lex->part_info->curr_part_elem->part_min_rows= $3; }
        | DATA_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys
        { Lex->part_info->curr_part_elem->data_file_name= $4.str; }
        | INDEX_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys
        { Lex->part_info->curr_part_elem->index_file_name= $4.str; }
        | COMMENT_SYM opt_equal TEXT_STRING_sys
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        { Lex->part_info->curr_part_elem->part_comment= $3.str; }
        ;
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/*
 End of partition parser part
*/

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create_select:
3933
          SELECT_SYM
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          {
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	    LEX *lex=Lex;
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	    lex->lock_option= using_update_log ? TL_READ_NO_INSERT : TL_READ;
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	    if (lex->sql_command == SQLCOM_INSERT)
	      lex->sql_command= SQLCOM_INSERT_SELECT;
	    else if (lex->sql_command == SQLCOM_REPLACE)
	      lex->sql_command= SQLCOM_REPLACE_SELECT;
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	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
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	    lex->current_select->table_list.save_and_clear(&lex->save_list);
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	    mysql_init_select(lex);
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	    lex->current_select->parsing_place= SELECT_LIST;
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          }
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          select_options select_item_list
	  {
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	    Select->parsing_place= NO_MATTER;
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	  }
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	  opt_select_from
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	  {
	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
	    Lex->current_select->table_list.push_front(&Lex->save_list);
	  }
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        ;
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opt_as:
	/* empty */ {}
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	| AS	    {};
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opt_create_database_options:
	/* empty */			{}
	| create_database_options	{};

create_database_options:
	create_database_option					{}
	| create_database_options create_database_option	{};

create_database_option:
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	default_collation   {}
	| default_charset   {};
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opt_table_options:
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	/* empty */	 { $$= 0; }
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	| table_options  { $$= $1;};
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table_options:
	table_option	{ $$=$1; }
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	| table_option table_options { $$= $1 | $2; };
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table_option:
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	TEMPORARY	{ $$=HA_LEX_CREATE_TMP_TABLE; };
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opt_if_not_exists:
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	/* empty */	 { $$= 0; }
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	| IF not EXISTS	 { $$=HA_LEX_CREATE_IF_NOT_EXISTS; };
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opt_create_table_options:
	/* empty */
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	| create_table_options;
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create_table_options_space_separated:
	create_table_option
	| create_table_option create_table_options_space_separated;

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create_table_options:
	create_table_option
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	| create_table_option     create_table_options
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	| create_table_option ',' create_table_options;
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create_table_option:
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	ENGINE_SYM opt_equal storage_engines    { Lex->create_info.db_type= $3; Lex->create_info.used_fields|= HA_CREATE_USED_ENGINE; }
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	| MAX_ROWS opt_equal ulonglong_num	{ Lex->create_info.max_rows= $3; Lex->create_info.used_fields|= HA_CREATE_USED_MAX_ROWS;}
	| MIN_ROWS opt_equal ulonglong_num	{ Lex->create_info.min_rows= $3; Lex->create_info.used_fields|= HA_CREATE_USED_MIN_ROWS;}
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	| AVG_ROW_LENGTH opt_equal ulong_num	{ Lex->create_info.avg_row_length=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AVG_ROW_LENGTH;}
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	| PASSWORD opt_equal TEXT_STRING_sys	{ Lex->create_info.password=$3.str; Lex->create_info.used_fields|= HA_CREATE_USED_PASSWORD; }
	| COMMENT_SYM opt_equal TEXT_STRING_sys	{ Lex->create_info.comment=$3.str; Lex->create_info.used_fields|= HA_CREATE_USED_COMMENT; }
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	| AUTO_INC opt_equal ulonglong_num	{ Lex->create_info.auto_increment_value=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AUTO;}
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        | PACK_KEYS_SYM opt_equal ulong_num
          {
            switch($3) {
            case 0:
                Lex->create_info.table_options|= HA_OPTION_NO_PACK_KEYS;
                break;
            case 1:
                Lex->create_info.table_options|= HA_OPTION_PACK_KEYS;
                break;
            default:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
            }
            Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;
          }
        | PACK_KEYS_SYM opt_equal DEFAULT
          {
            Lex->create_info.table_options&=
              ~(HA_OPTION_PACK_KEYS | HA_OPTION_NO_PACK_KEYS);
            Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;
          }
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	| CHECKSUM_SYM opt_equal ulong_num	{ Lex->create_info.table_options|= $3 ? HA_OPTION_CHECKSUM : HA_OPTION_NO_CHECKSUM; Lex->create_info.used_fields|= HA_CREATE_USED_CHECKSUM; }
	| DELAY_KEY_WRITE_SYM opt_equal ulong_num { Lex->create_info.table_options|= $3 ? HA_OPTION_DELAY_KEY_WRITE : HA_OPTION_NO_DELAY_KEY_WRITE;  Lex->create_info.used_fields|= HA_CREATE_USED_DELAY_KEY_WRITE; }
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	| ROW_FORMAT_SYM opt_equal row_types	{ Lex->create_info.row_type= $3;  Lex->create_info.used_fields|= HA_CREATE_USED_ROW_FORMAT; }
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	| UNION_SYM opt_equal '(' table_list ')'
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	  {
	    /* Move the union list to the merge_list */
	    LEX *lex=Lex;
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	    TABLE_LIST *table_list= lex->select_lex.get_table_list();
	    lex->create_info.merge_list= lex->select_lex.table_list;
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	    lex->create_info.merge_list.elements--;
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	    lex->create_info.merge_list.first=
	      (byte*) (table_list->next_local);
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	    lex->select_lex.table_list.elements=1;
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	    lex->select_lex.table_list.next=
	      (byte**) &(table_list->next_local);
	    table_list->next_local= 0;
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	    lex->create_info.used_fields|= HA_CREATE_USED_UNION;
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	  }
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	| default_charset
	| default_collation
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	| INSERT_METHOD opt_equal merge_insert_types   { Lex->create_info.merge_insert_method= $3; Lex->create_info.used_fields|= HA_CREATE_USED_INSERT_METHOD;}
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	| DATA_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.data_file_name= $4.str; Lex->create_info.used_fields|= HA_CREATE_USED_DATADIR; }
	| INDEX_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.index_file_name= $4.str;  Lex->create_info.used_fields|= HA_CREATE_USED_INDEXDIR; }
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        | TABLESPACE ident {Lex->create_info.tablespace= $2.str;}
        | STORAGE_SYM DISK_SYM {Lex->create_info.store_on_disk= TRUE;}
        | STORAGE_SYM MEMORY_SYM {Lex->create_info.store_on_disk= FALSE;}
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	| CONNECTION_SYM opt_equal TEXT_STRING_sys { Lex->create_info.connect_string.str= $3.str; Lex->create_info.connect_string.length= $3.length;  Lex->create_info.used_fields|= HA_CREATE_USED_CONNECTION; }
4063
        ;
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default_charset:
        opt_default charset opt_equal charset_name_or_default
        {
          HA_CREATE_INFO *cinfo= &Lex->create_info;
          if ((cinfo->used_fields & HA_CREATE_USED_DEFAULT_CHARSET) &&
               cinfo->default_table_charset && $4 &&
               !my_charset_same(cinfo->default_table_charset,$4))
          {
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            my_error(ER_CONFLICTING_DECLARATIONS, MYF(0),
                     "CHARACTER SET ", cinfo->default_table_charset->csname,
                     "CHARACTER SET ", $4->csname);
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            YYABORT;
          }
	  Lex->create_info.default_table_charset= $4;
          Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
        };

default_collation:
        opt_default COLLATE_SYM opt_equal collation_name_or_default
        {
          HA_CREATE_INFO *cinfo= &Lex->create_info;
          if ((cinfo->used_fields & HA_CREATE_USED_DEFAULT_CHARSET) &&
               cinfo->default_table_charset && $4 &&
               !my_charset_same(cinfo->default_table_charset,$4))
            {
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              my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $4->name, cinfo->default_table_charset->csname);
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              YYABORT;
            }
            Lex->create_info.default_table_charset= $4;
            Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
        };

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storage_engines:
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	ident_or_text
	{
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	  $$ = ha_resolve_by_name(YYTHD, &$1);
	  if ($$ == NULL &&
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	      test(YYTHD->variables.sql_mode & MODE_NO_ENGINE_SUBSTITUTION))
	  {
4105
	    my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), $1.str);
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	    YYABORT;
	  }
	};
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row_types:
	DEFAULT		{ $$= ROW_TYPE_DEFAULT; }
	| FIXED_SYM	{ $$= ROW_TYPE_FIXED; }
	| DYNAMIC_SYM	{ $$= ROW_TYPE_DYNAMIC; }
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	| COMPRESSED_SYM { $$= ROW_TYPE_COMPRESSED; }
	| REDUNDANT_SYM	{ $$= ROW_TYPE_REDUNDANT; }
	| COMPACT_SYM	{ $$= ROW_TYPE_COMPACT; };
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merge_insert_types:
       NO_SYM            { $$= MERGE_INSERT_DISABLED; }
       | FIRST_SYM       { $$= MERGE_INSERT_TO_FIRST; }
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       | LAST_SYM        { $$= MERGE_INSERT_TO_LAST; };
4122

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opt_select_from:
4124
	opt_limit_clause {}
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	| select_from select_lock_type;
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udf_func_type:
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	/* empty */	{ $$ = UDFTYPE_FUNCTION; }
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	| AGGREGATE_SYM { $$ = UDFTYPE_AGGREGATE; };
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udf_type:
	STRING_SYM {$$ = (int) STRING_RESULT; }
	| REAL {$$ = (int) REAL_RESULT; }
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        | DECIMAL_SYM {$$ = (int) DECIMAL_RESULT; }
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	| INT_SYM {$$ = (int) INT_RESULT; };
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field_list:
	  field_list_item
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	| field_list ',' field_list_item;
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field_list_item:
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	   column_def
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         | key_def
         ;

column_def:
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	  field_spec opt_check_constraint
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	| field_spec references
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
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	;
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key_def:
4156
	key_type opt_ident key_alg '(' key_list ')' opt_fulltext_parser
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	  {
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	    LEX *lex=Lex;
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	    if ($1 != Key::FULLTEXT && $7)
	    {
	      yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
	    }
	    lex->key_list.push_back(new Key($1,$2, $3, 0, lex->col_list, $7));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| opt_constraint constraint_key_type opt_ident key_alg '(' key_list ')'
	  {
	    LEX *lex=Lex;
	    const char *key_name= $3 ? $3:$1;
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	    lex->key_list.push_back(new Key($2, key_name, $4, 0,
				    lex->col_list));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
4175
	| opt_constraint FOREIGN KEY_SYM opt_ident '(' key_list ')' references
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	  {
4177
	    LEX *lex=Lex;
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	    lex->key_list.push_back(new foreign_key($4 ? $4:$1, lex->col_list,
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				    $8,
				    lex->ref_list,
				    lex->fk_delete_opt,
				    lex->fk_update_opt,
				    lex->fk_match_option));
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	    lex->key_list.push_back(new Key(Key::MULTIPLE, $4 ? $4 : $1,
					    HA_KEY_ALG_UNDEF, 1,
					    lex->col_list));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| constraint opt_check_constraint
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
4193
	| opt_constraint check_constraint
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	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
	;

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opt_fulltext_parser:
        /* empty */               { $$= (LEX_STRING *)0; }
	| WITH PARSER_SYM IDENT_sys
          {
            if (plugin_is_ready(&$3, MYSQL_FTPARSER_PLUGIN))
              $$= (LEX_STRING *)sql_memdup(&$3, sizeof(LEX_STRING));
            else
            {
              my_error(ER_FUNCTION_NOT_DEFINED, MYF(0), $3.str);
              YYABORT;
            }
          }
        ;

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opt_check_constraint:
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	/* empty */
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	| check_constraint
	;

check_constraint:
	CHECK_SYM expr
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	;
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opt_constraint:
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	/* empty */		{ $$=(char*) 0; }
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	| constraint		{ $$= $1; }
	;

constraint:
	CONSTRAINT opt_ident	{ $$=$2; }
	;
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field_spec:
	field_ident
	 {
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	   LEX *lex=Lex;
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	   lex->length=lex->dec=0; lex->type=0;
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	   lex->default_value= lex->on_update_value= 0;
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           lex->comment=null_lex_str;
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	   lex->charset=NULL;
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	 }
	type opt_attribute
	{
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	  LEX *lex=Lex;
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	  if (add_field_to_list(lex->thd, $1.str,
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				(enum enum_field_types) $3,
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				lex->length,lex->dec,lex->type,
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				lex->default_value, lex->on_update_value, 
4247
                                &lex->comment,
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				lex->change,&lex->interval_list,lex->charset,
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				lex->uint_geom_type))
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	    YYABORT;
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	};
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type:
4254
	int_type opt_len field_options	{ $$=$1; }
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	| real_type opt_precision field_options { $$=$1; }
	| FLOAT_SYM float_options field_options { $$=FIELD_TYPE_FLOAT; }
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	| BIT_SYM			{ Lex->length= (char*) "1";
					  $$=FIELD_TYPE_BIT; }
	| BIT_SYM '(' NUM ')'		{ Lex->length= $3.str;
					  $$=FIELD_TYPE_BIT; }
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	| BOOL_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
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	| BOOLEAN_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
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	| char '(' NUM ')' opt_binary	{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING; }
	| char opt_binary		{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_STRING; }
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	| nchar '(' NUM ')' opt_bin_mod	{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| nchar opt_bin_mod		{ Lex->length=(char*) "1";
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| BINARY '(' NUM ')'		{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_STRING; }
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	| BINARY			{ Lex->length= (char*) "1";
					  Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_STRING; }
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	| varchar '(' NUM ')' opt_binary { Lex->length=$3.str;
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					  $$= MYSQL_TYPE_VARCHAR; }
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	| nvarchar '(' NUM ')' opt_bin_mod { Lex->length=$3.str;
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					  $$= MYSQL_TYPE_VARCHAR;
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					  Lex->charset=national_charset_info; }
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	| VARBINARY '(' NUM ')' 	{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$= MYSQL_TYPE_VARCHAR; }
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	| YEAR_SYM opt_len field_options { $$=FIELD_TYPE_YEAR; }
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	| DATE_SYM			{ $$=FIELD_TYPE_DATE; }
	| TIME_SYM			{ $$=FIELD_TYPE_TIME; }
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	| TIMESTAMP opt_len
4293
	  {
4294
	    if (YYTHD->variables.sql_mode & MODE_MAXDB)
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	      $$=FIELD_TYPE_DATETIME;
	    else
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            {
              /* 
                Unlike other types TIMESTAMP fields are NOT NULL by default.
              */
              Lex->type|= NOT_NULL_FLAG;
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	      $$=FIELD_TYPE_TIMESTAMP;
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            }
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	   }
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	| DATETIME			{ $$=FIELD_TYPE_DATETIME; }
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	| TINYBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_TINY_BLOB; }
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	| BLOB_SYM opt_len		{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_BLOB; }
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	| spatial_type
          {
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#ifdef HAVE_SPATIAL
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            Lex->charset=&my_charset_bin;
            Lex->uint_geom_type= (uint)$1;
            $$=FIELD_TYPE_GEOMETRY;
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#else
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            my_error(ER_FEATURE_DISABLED, MYF(0),
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                     sym_group_geom.name, sym_group_geom.needed_define);
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            YYABORT;
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#endif
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          }
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	| MEDIUMBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| LONGBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_LONG_BLOB; }
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	| LONG_SYM VARBINARY		{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| LONG_SYM varchar opt_binary	{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| TINYTEXT opt_binary		{ $$=FIELD_TYPE_TINY_BLOB; }
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	| TEXT_SYM opt_len opt_binary	{ $$=FIELD_TYPE_BLOB; }
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	| MEDIUMTEXT opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| LONGTEXT opt_binary		{ $$=FIELD_TYPE_LONG_BLOB; }
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	| DECIMAL_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| NUMERIC_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| FIXED_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| ENUM {Lex->interval_list.empty();} '(' string_list ')' opt_binary
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	  { $$=FIELD_TYPE_ENUM; }
4341
	| SET { Lex->interval_list.empty();} '(' string_list ')' opt_binary
4342
	  { $$=FIELD_TYPE_SET; }
4343
	| LONG_SYM opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| SERIAL_SYM
	  {
	    $$=FIELD_TYPE_LONGLONG;
	    Lex->type|= (AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNSIGNED_FLAG |
		         UNIQUE_FLAG);
	  }
4350
	;
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spatial_type:
	GEOMETRY_SYM	      { $$= Field::GEOM_GEOMETRY; }
	| GEOMETRYCOLLECTION  { $$= Field::GEOM_GEOMETRYCOLLECTION; }
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	| POINT_SYM           { Lex->length= (char*)"21";
                                $$= Field::GEOM_POINT;
                              }
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	| MULTIPOINT          { $$= Field::GEOM_MULTIPOINT; }
	| LINESTRING          { $$= Field::GEOM_LINESTRING; }
	| MULTILINESTRING     { $$= Field::GEOM_MULTILINESTRING; }
	| POLYGON             { $$= Field::GEOM_POLYGON; }
	| MULTIPOLYGON        { $$= Field::GEOM_MULTIPOLYGON; }
	;

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char:
	CHAR_SYM {}
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	;

nchar:
	NCHAR_SYM {}
	| NATIONAL_SYM CHAR_SYM {}
	;
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varchar:
	char VARYING {}
	| VARCHAR {}
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	;

nvarchar:
	NATIONAL_SYM VARCHAR {}
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	| NVARCHAR_SYM {}
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	| NCHAR_SYM VARCHAR {}
	| NATIONAL_SYM CHAR_SYM VARYING {}
	| NCHAR_SYM VARYING {}
	;
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int_type:
	INT_SYM		{ $$=FIELD_TYPE_LONG; }
	| TINYINT	{ $$=FIELD_TYPE_TINY; }
	| SMALLINT	{ $$=FIELD_TYPE_SHORT; }
	| MEDIUMINT	{ $$=FIELD_TYPE_INT24; }
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	| BIGINT	{ $$=FIELD_TYPE_LONGLONG; };
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real_type:
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	REAL		{ $$= YYTHD->variables.sql_mode & MODE_REAL_AS_FLOAT ?
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			      FIELD_TYPE_FLOAT : FIELD_TYPE_DOUBLE; }
	| DOUBLE_SYM	{ $$=FIELD_TYPE_DOUBLE; }
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	| DOUBLE_SYM PRECISION { $$=FIELD_TYPE_DOUBLE; };
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float_options:
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        /* empty */		{ Lex->dec=Lex->length= (char*)0; }
        | '(' NUM ')'		{ Lex->length=$2.str; Lex->dec= (char*)0; }
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	| precision		{};
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precision:
	'(' NUM ',' NUM ')'
	{
	  LEX *lex=Lex;
	  lex->length=$2.str; lex->dec=$4.str;
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	};
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field_options:
	/* empty */		{}
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	| field_opt_list	{};
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field_opt_list:
	field_opt_list field_option {}
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	| field_option {};
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field_option:
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	SIGNED_SYM	{}
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	| UNSIGNED	{ Lex->type|= UNSIGNED_FLAG;}
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	| ZEROFILL	{ Lex->type|= UNSIGNED_FLAG | ZEROFILL_FLAG; };
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opt_len:
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	/* empty */	{ Lex->length=(char*) 0; } /* use default length */
	| '(' NUM ')'	{ Lex->length= $2.str; };
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opt_precision:
	/* empty */	{}
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	| precision	{};
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opt_attribute:
	/* empty */ {}
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	| opt_attribute_list {};
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opt_attribute_list:
	opt_attribute_list attribute {}
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	| attribute;
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attribute:
	NULL_SYM	  { Lex->type&= ~ NOT_NULL_FLAG; }
4444
	| not NULL_SYM	  { Lex->type|= NOT_NULL_FLAG; }
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	| DEFAULT now_or_signed_literal { Lex->default_value=$2; }
	| ON UPDATE_SYM NOW_SYM optional_braces 
          { Lex->on_update_value= new Item_func_now_local(); }
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	| AUTO_INC	  { Lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG; }
4449
	| SERIAL_SYM DEFAULT VALUE_SYM
4450 4451 4452
	  { 
	    LEX *lex=Lex;
	    lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNIQUE_FLAG; 
4453
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
	| opt_primary KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= PRI_KEY_FLAG | NOT_NULL_FLAG; 
4459
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
4460 4461 4462 4463 4464
	  }
	| UNIQUE_SYM	  
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_FLAG; 
4465
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
4466 4467 4468 4469 4470
	  }
	| UNIQUE_SYM KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_KEY_FLAG; 
4471
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
4472
	  }
4473
	| COMMENT_SYM TEXT_STRING_sys { Lex->comment= $2; }
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	| COLLATE_SYM collation_name
	  {
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	    if (Lex->charset && !my_charset_same(Lex->charset,$2))
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	    {
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	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $2->name,Lex->charset->csname);
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	      YYABORT;
	    }
	    else
	    {
	      Lex->charset=$2;
	    }
	  }
	;
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4489 4490 4491 4492 4493
now_or_signed_literal:
        NOW_SYM optional_braces { $$= new Item_func_now_local(); }
        | signed_literal { $$=$1; }
        ;

4494 4495 4496 4497
charset:
	CHAR_SYM SET	{}
	| CHARSET	{}
	;
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4499
charset_name:
4500
	ident_or_text
4501
	{
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	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))))
4503
	  {
4504
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
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	    YYABORT;
	  }
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	}
	| BINARY { $$= &my_charset_bin; }
	;
4510

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charset_name_or_default:
	charset_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;
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old_or_new_charset_name:
	ident_or_text
	{
	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))) &&
	      !($$=get_old_charset_by_name($1.str)))
	  {
4522
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
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	    YYABORT;
	  }
	}
	| BINARY { $$= &my_charset_bin; }
	;

old_or_new_charset_name_or_default:
	old_or_new_charset_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;

4533
collation_name:
4534
	ident_or_text
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	{
	  if (!($$=get_charset_by_name($1.str,MYF(0))))
	  {
4538
	    my_error(ER_UNKNOWN_COLLATION, MYF(0), $1.str);
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	    YYABORT;
	  }
	};

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opt_collate:
	/* empty */	{ $$=NULL; }
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	| COLLATE_SYM collation_name_or_default { $$=$2; }
4546 4547
	;

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collation_name_or_default:
	collation_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;

4552 4553 4554 4555
opt_default:
	/* empty */	{}
	| DEFAULT	{};

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opt_binary:
4557
	/* empty */			{ Lex->charset=NULL; }
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	| ASCII_SYM opt_bin_mod		{ Lex->charset=&my_charset_latin1; }
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	| BYTE_SYM			{ Lex->charset=&my_charset_bin; }
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	| UNICODE_SYM opt_bin_mod
	{
	  if (!(Lex->charset=get_charset_by_csname("ucs2",
                                                   MY_CS_PRIMARY,MYF(0))))
	  {
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), "ucs2");
	    YYABORT;
	  }
	}
	| charset charset_name opt_bin_mod	{ Lex->charset=$2; }
        | BINARY opt_bin_charset { Lex->type|= BINCMP_FLAG; };

opt_bin_mod:
	/* empty */ { }
	| BINARY { Lex->type|= BINCMP_FLAG; };

opt_bin_charset:
	/* empty */ { }
	| ASCII_SYM	{ Lex->charset=&my_charset_latin1; }
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	| UNICODE_SYM
	{
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	  if (!(Lex->charset=get_charset_by_csname("ucs2",
                                                   MY_CS_PRIMARY,MYF(0))))
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	  {
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	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), "ucs2");
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	    YYABORT;
	  }
	}
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	| charset charset_name	{ Lex->charset=$2; } ;
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opt_primary:
	/* empty */
	| PRIMARY_SYM
4593
	;
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references:
4596 4597
	REFERENCES table_ident
	{
4598
	  LEX *lex=Lex;
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	  lex->fk_delete_opt= lex->fk_update_opt= lex->fk_match_option= 0;
	  lex->ref_list.empty();
	}
	opt_ref_list
	{
	  $$=$2;
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	};
4606

4607
opt_ref_list:
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	/* empty */ opt_on_delete {}
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	| '(' ref_list ')' opt_on_delete {};
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ref_list:
	ref_list ',' ident	{ Lex->ref_list.push_back(new key_part_spec($3.str)); }
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	| ident			{ Lex->ref_list.push_back(new key_part_spec($1.str)); };
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opt_on_delete:
	/* empty */ {}
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	| opt_on_delete_list {};
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opt_on_delete_list:
	opt_on_delete_list opt_on_delete_item {}
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	| opt_on_delete_item {};
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opt_on_delete_item:
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	ON DELETE_SYM delete_option   { Lex->fk_delete_opt= $3; }
	| ON UPDATE_SYM delete_option { Lex->fk_update_opt= $3; }
	| MATCH FULL	{ Lex->fk_match_option= foreign_key::FK_MATCH_FULL; }
	| MATCH PARTIAL { Lex->fk_match_option= foreign_key::FK_MATCH_PARTIAL; }
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	| MATCH SIMPLE_SYM { Lex->fk_match_option= foreign_key::FK_MATCH_SIMPLE; };
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delete_option:
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	RESTRICT	 { $$= (int) foreign_key::FK_OPTION_RESTRICT; }
	| CASCADE	 { $$= (int) foreign_key::FK_OPTION_CASCADE; }
	| SET NULL_SYM   { $$= (int) foreign_key::FK_OPTION_SET_NULL; }
	| NO_SYM ACTION  { $$= (int) foreign_key::FK_OPTION_NO_ACTION; }
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	| SET DEFAULT    { $$= (int) foreign_key::FK_OPTION_DEFAULT;  };
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key_type:
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	key_or_index			    { $$= Key::MULTIPLE; }
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	| FULLTEXT_SYM opt_key_or_index	    { $$= Key::FULLTEXT; }
	| SPATIAL_SYM opt_key_or_index
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	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  };
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constraint_key_type:
	PRIMARY_SYM KEY_SYM  { $$= Key::PRIMARY; }
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	| UNIQUE_SYM opt_key_or_index { $$= Key::UNIQUE; };
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key_or_index:
	KEY_SYM {}
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	| INDEX_SYM {};
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opt_key_or_index:
	/* empty */ {}
	| key_or_index
	;

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keys_or_index:
	KEYS {}
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	| INDEX_SYM {}
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	| INDEXES {};
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opt_unique_or_fulltext:
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	/* empty */	{ $$= Key::MULTIPLE; }
	| UNIQUE_SYM	{ $$= Key::UNIQUE; }
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	| FULLTEXT_SYM	{ $$= Key::FULLTEXT;}
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	| SPATIAL_SYM
	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
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            my_error(ER_FEATURE_DISABLED, MYF(0),
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                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  }
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        ;
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key_alg:
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	/* empty */		   { $$= HA_KEY_ALG_UNDEF; }
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	| USING opt_btree_or_rtree { $$= $2; }
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	| TYPE_SYM opt_btree_or_rtree  { $$= $2; };
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opt_btree_or_rtree:
	BTREE_SYM	{ $$= HA_KEY_ALG_BTREE; }
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	| RTREE_SYM
	  {
	    $$= HA_KEY_ALG_RTREE;
	  }
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	| HASH_SYM	{ $$= HA_KEY_ALG_HASH; };
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key_list:
	key_list ',' key_part order_dir { Lex->col_list.push_back($3); }
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	| key_part order_dir		{ Lex->col_list.push_back($1); };
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key_part:
	ident			{ $$=new key_part_spec($1.str); }
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	| ident '(' NUM ')'	
        {
          int key_part_len= atoi($3.str);
          if (!key_part_len)
          {
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            my_error(ER_KEY_PART_0, MYF(0), $1.str);
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          }
          $$=new key_part_spec($1.str,(uint) key_part_len);
        };
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opt_ident:
	/* empty */	{ $$=(char*) 0; }	/* Defaultlength */
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	| field_ident	{ $$=$1.str; };
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opt_component:
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        /* empty */      { $$= null_lex_str; }
        | '.' ident      { $$= $2; };
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string_list:
	text_string			{ Lex->interval_list.push_back($1); }
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	| string_list ',' text_string	{ Lex->interval_list.push_back($3); };
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/*
** Alter table
*/

alter:
	ALTER opt_ignore TABLE_SYM table_ident
	{
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	  THD *thd= YYTHD;
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	  LEX *lex= thd->lex;
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	  lex->sql_command= SQLCOM_ALTER_TABLE;
	  lex->name= 0;
	  lex->duplicates= DUP_ERROR; 
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	  if (!lex->select_lex.add_table_to_list(thd, $4, NULL,
						 TL_OPTION_UPDATING))
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	    YYABORT;
	  lex->create_list.empty();
	  lex->key_list.empty();
	  lex->col_list.empty();
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          lex->select_lex.init_order();
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	  lex->select_lex.db=lex->name=0;
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	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
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	  lex->create_info.db_type= (handlerton*) &default_hton;
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	  lex->create_info.default_table_charset= NULL;
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	  lex->create_info.row_type= ROW_TYPE_NOT_USED;
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	  lex->alter_info.reset();
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	  lex->alter_info.flags= 0;
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	}
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	alter_commands
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	{}
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	| ALTER DATABASE ident_or_empty
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          {
            Lex->create_info.default_table_charset= NULL;
            Lex->create_info.used_fields= 0;
          }
          opt_create_database_options
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	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_ALTER_DB;
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	    lex->name= $3;
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	  }
	| ALTER PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

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	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
	      YYABORT;
	    }
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	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_PROCEDURE;
	    lex->spname= $3;
	  }
	| ALTER FUNCTION_SYM sp_name
	  {
	    LEX *lex= Lex;
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	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
	      YYABORT;
	    }
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	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_FUNCTION;
	    lex->spname= $3;
	  }
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        | ALTER view_algorithm_opt definer view_suid
          VIEW_SYM table_ident
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	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    lex->sql_command= SQLCOM_CREATE_VIEW;
	    lex->create_view_mode= VIEW_ALTER;
	    /* first table in list is target VIEW name */
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	    lex->select_lex.add_table_to_list(thd, $6, NULL, 0);
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	  }
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	  view_list_opt AS view_select view_check_option
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	  {}
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	| ALTER EVENT_SYM sp_name
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          /*
             BE CAREFUL when you add a new rule to update the block where
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             YYTHD->client_capabilities is set back to original value
          */
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          {
            LEX *lex=Lex;
            event_timed *et;

            if (lex->et)
            {
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              /*
                Recursive events are not possible because recursive SPs
                are not also possible. lex->sp_head is not stacked.
              */
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              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
              YYABORT;
            }
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            lex->spname= 0;//defensive programming
4834

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            if (!(et= new event_timed()))// implicitly calls event_timed::init()
              YYABORT;
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            lex->et = et;

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            if (!lex->et_compile_phase)
            {
              et->init_definer(YYTHD);
              et->init_name(YYTHD, $3);
            }
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            /*
                We have to turn of CLIENT_MULTI_QUERIES while parsing a
                stored procedure, otherwise yylex will chop it into pieces
                at each ';'.
            */
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            $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
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            YYTHD->client_capabilities &= ~CLIENT_MULTI_QUERIES;
          }
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          ev_alter_on_schedule_completion
          opt_ev_rename_to
          opt_ev_status
          opt_ev_comment
          opt_ev_sql_stmt
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          {
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            /*
              $1 - ALTER
              $2 - EVENT_SYM
              $3 - sp_name
              $4 - the block above
            */
            YYTHD->client_capabilities |= $<ulong_num>4;

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            /*
              sql_command is set here because some rules in ev_sql_stmt
              can overwrite it
            */
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            if (!($5 || $6 || $7 || $8 || $9))
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            {
	      yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
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            Lex->sql_command= SQLCOM_ALTER_EVENT;
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          }
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        | ALTER TABLESPACE alter_tablespace_info
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_cmd_type= ALTER_TABLESPACE;
          }
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        | ALTER LOGFILE_SYM GROUP alter_logfile_group_info
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          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_cmd_type= ALTER_LOGFILE_GROUP;
          }
        | ALTER TABLESPACE change_tablespace_info
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_cmd_type= CHANGE_FILE_TABLESPACE;
          }
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        | ALTER TABLESPACE change_tablespace_access
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          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_cmd_type= ALTER_ACCESS_MODE_TABLESPACE;
          }
4898
	;
4899

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ev_alter_on_schedule_completion: /* empty */ { $$= 0;}
        | ON SCHEDULE_SYM ev_schedule_time { $$= 1; }
        | ev_on_completion { $$= 1; }
        | ON SCHEDULE_SYM ev_schedule_time ev_on_completion { $$= 1; }
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      ;
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opt_ev_rename_to: /* empty */ { $$= 0;}
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        | RENAME TO_SYM sp_name
          {
            LEX *lex=Lex;
            lex->spname= $3; //use lex's spname to hold the new name
	                     //the original name is in the event_timed object
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            $$= 1;
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          }
      ;
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opt_ev_sql_stmt: /* empty*/ { $$= 0;}
        | DO_SYM ev_sql_stmt { $$= 1; }
4918
        ;
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4920

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ident_or_empty:
	/* empty */  { $$= 0; }
	| ident      { $$= $1.str; };

4925
alter_commands:
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	| DISCARD TABLESPACE { Lex->alter_info.tablespace_op= DISCARD_TABLESPACE; }
	| IMPORT TABLESPACE { Lex->alter_info.tablespace_op= IMPORT_TABLESPACE; }
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        | alter_list
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          opt_partitioning
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        | partitioning
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/*
4932
  This part was added for release 5.1 by Mikael Ronström.
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  From here we insert a number of commands to manage the partitions of a
  partitioned table such as adding partitions, dropping partitions,
  reorganising partitions in various manners. In future releases the list
  will be longer and also include moving partitions to a
  new table and so forth.
*/
        | add_partition_rule
        | DROP PARTITION_SYM alt_part_name_list
          {
	    Lex->alter_info.flags|= ALTER_DROP_PARTITION;
          }
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        | REBUILD_SYM PARTITION_SYM opt_no_write_to_binlog
          all_or_alt_part_name_list
          {
            LEX *lex= Lex;
	    lex->alter_info.flags|= ALTER_REBUILD_PARTITION;
            lex->no_write_to_binlog= $3;
          }
        | OPTIMIZE PARTITION_SYM opt_no_write_to_binlog
          all_or_alt_part_name_list
          {
            LEX *lex= Lex;
	    lex->alter_info.flags|= ALTER_OPTIMIZE_PARTITION;
            lex->no_write_to_binlog= $3;
            lex->check_opt.init();
          }
          opt_no_write_to_binlog opt_mi_check_type
        | ANALYZE_SYM PARTITION_SYM opt_no_write_to_binlog
          all_or_alt_part_name_list
          {
            LEX *lex= Lex;
	    lex->alter_info.flags|= ALTER_ANALYZE_PARTITION;
            lex->no_write_to_binlog= $3;
            lex->check_opt.init();
          }
          opt_mi_check_type
        | CHECK_SYM PARTITION_SYM all_or_alt_part_name_list
          {
            LEX *lex= Lex;
	    lex->alter_info.flags|= ALTER_CHECK_PARTITION;
            lex->check_opt.init();
          }
          opt_mi_check_type
        | REPAIR PARTITION_SYM opt_no_write_to_binlog
          all_or_alt_part_name_list
          {
            LEX *lex= Lex;
	    lex->alter_info.flags|= ALTER_REPAIR_PARTITION;
            lex->no_write_to_binlog= $3;
            lex->check_opt.init();
          }
          opt_mi_repair_type
        | COALESCE PARTITION_SYM opt_no_write_to_binlog ulong_num
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          {
            LEX *lex= Lex;
	    lex->alter_info.flags|= ALTER_COALESCE_PARTITION;
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            lex->no_write_to_binlog= $3;
	    lex->alter_info.no_parts= $4;
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          }
        | reorg_partition_rule
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        ;

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all_or_alt_part_name_list:
        | ALL
        {
	  Lex->alter_info.flags|= ALTER_ALL_PARTITION;
        }
        | alt_part_name_list
        ;

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add_partition_rule:
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        ADD PARTITION_SYM opt_no_write_to_binlog
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        {
          LEX *lex= Lex;
          lex->part_info= new partition_info();
          if (!lex->part_info)
          {
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            mem_alloc_error(sizeof(partition_info));
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            YYABORT;
          }
	  lex->alter_info.flags|= ALTER_ADD_PARTITION;
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          lex->no_write_to_binlog= $3;
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        }
        add_part_extra
        {}
        ;

add_part_extra:
        | '(' part_def_list ')'
        {
          LEX *lex= Lex;
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          lex->part_info->no_parts= lex->part_info->partitions.elements;
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        }
        | PARTITIONS_SYM ulong_num
        {
          LEX *lex= Lex;
          lex->part_info->no_parts= $2;
        }
        ;

reorg_partition_rule:
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        REORGANIZE_SYM PARTITION_SYM opt_no_write_to_binlog
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        {
          LEX *lex= Lex;
          lex->part_info= new partition_info();
          if (!lex->part_info)
          {
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            mem_alloc_error(sizeof(partition_info));
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            YYABORT;
          }
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          lex->no_write_to_binlog= $3;
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        }
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        reorg_parts_rule
        ;

reorg_parts_rule:
        /* empty */
        {
	  Lex->alter_info.flags|= ALTER_TABLE_REORG;
        }
        |
        alt_part_name_list
        {
	  Lex->alter_info.flags|= ALTER_REORGANIZE_PARTITION;
        }
        INTO '(' part_def_list ')'
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        {
          LEX *lex= Lex;
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          lex->part_info->no_parts= lex->part_info->partitions.elements;
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        }
        ;

alt_part_name_list:
        alt_part_name_item {}
        | alt_part_name_list ',' alt_part_name_item {}
        ;

alt_part_name_item:
        ident
        {
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          if (Lex->alter_info.partition_names.push_back($1.str))
          {
            mem_alloc_error(1);
            YYABORT;
          }
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        }
        ;

/*
  End of management of partition commands
*/

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alter_list:
        alter_list_item
	| alter_list ',' alter_list_item
        ;
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add_column:
5091
	ADD opt_column
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	{
	  LEX *lex=Lex;
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	  lex->change=0;
	  lex->alter_info.flags|= ALTER_ADD_COLUMN;
5096
	};
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alter_list_item:
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	add_column column_def opt_place { }
	| ADD key_def
	  {
	    Lex->alter_info.flags|= ALTER_ADD_INDEX;
5103
	  }
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	| add_column '(' field_list ')'
          {
	    Lex->alter_info.flags|= ALTER_ADD_COLUMN | ALTER_ADD_INDEX;
          }
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	| CHANGE opt_column field_ident
	  {
	     LEX *lex=Lex;
5111
	     lex->change= $3.str;
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	     lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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	  }
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          field_spec opt_place
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        | MODIFY_SYM opt_column field_ident
          {
            LEX *lex=Lex;
5118
            lex->length=lex->dec=0; lex->type=0;
5119
            lex->default_value= lex->on_update_value= 0;
5120
            lex->comment=null_lex_str;
5121
	    lex->charset= NULL;
5122
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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          }
          type opt_attribute
          {
            LEX *lex=Lex;
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            if (add_field_to_list(lex->thd,$3.str,
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                                  (enum enum_field_types) $5,
                                  lex->length,lex->dec,lex->type,
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                                  lex->default_value, lex->on_update_value,
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                                  &lex->comment,
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				  $3.str, &lex->interval_list, lex->charset,
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				  lex->uint_geom_type))
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	       YYABORT;
          }
          opt_place
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	| DROP opt_column field_ident opt_restrict
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::COLUMN,
5141
                                                               $3.str));
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	    lex->alter_info.flags|= ALTER_DROP_COLUMN;
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	  }
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	| DROP FOREIGN KEY_SYM opt_ident
          {
	    Lex->alter_info.flags|= ALTER_DROP_INDEX;
          }
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	| DROP PRIMARY_SYM KEY_SYM
	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
				               primary_key_name));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
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	  }
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	| DROP key_or_index field_ident
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
					                       $3.str));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
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	  }
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	| DISABLE_SYM KEYS
          {
	    LEX *lex=Lex;
            lex->alter_info.keys_onoff= DISABLE;
	    lex->alter_info.flags|= ALTER_KEYS_ONOFF;
          }
	| ENABLE_SYM KEYS
          {
	    LEX *lex=Lex;
            lex->alter_info.keys_onoff= ENABLE;
	    lex->alter_info.flags|= ALTER_KEYS_ONOFF;
          }
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	| ALTER opt_column field_ident SET DEFAULT signed_literal
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,$6));
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	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
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	| ALTER opt_column field_ident DROP DEFAULT
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,
                                                                  (Item*) 0));
5185
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
5187
	| RENAME opt_to table_ident
5188
	  {
5189
	    LEX *lex=Lex;
5190
	    lex->select_lex.db=$3->db.str;
5191
	    lex->name= $3->table.str;
5192 5193 5194
            if (check_table_name($3->table.str,$3->table.length) ||
                $3->db.str && check_db_name($3->db.str))
            {
5195
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3->table.str);
5196 5197
              YYABORT;
            }
5198
	    lex->alter_info.flags|= ALTER_RENAME;
5199
	  }
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	| CONVERT_SYM TO_SYM charset charset_name_or_default opt_collate
	  {
	    if (!$4)
	    {
	      THD *thd= YYTHD;
	      $4= thd->variables.collation_database;
	    }
	    $5= $5 ? $5 : $4;
	    if (!my_charset_same($4,$5))
	    {
5210 5211
	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $5->name, $4->csname);
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	      YYABORT;
	    }
5214
	    LEX *lex= Lex;
5215
	    lex->create_info.table_charset=
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	      lex->create_info.default_table_charset= $5;
	    lex->create_info.used_fields|= (HA_CREATE_USED_CHARSET |
					    HA_CREATE_USED_DEFAULT_CHARSET);
5219
	    lex->alter_info.flags|= ALTER_CONVERT;
5220
	  }
5221
        | create_table_options_space_separated
5222 5223
	  {
	    LEX *lex=Lex;
5224
	    lex->alter_info.flags|= ALTER_OPTIONS;
5225
	  }
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	| FORCE_SYM
	  {
	    Lex->alter_info.flags|= ALTER_FORCE;
	   }
5230
	| order_clause
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	  {
	    LEX *lex=Lex;
5233
	    lex->alter_info.flags|= ALTER_ORDER;
5234
	  };
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opt_column:
	/* empty */	{}
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	| COLUMN_SYM	{};
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opt_ignore:
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	/* empty */	{ Lex->ignore= 0;}
	| IGNORE_SYM	{ Lex->ignore= 1;}
	;
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opt_restrict:
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	/* empty */	{ Lex->drop_mode= DROP_DEFAULT; }
	| RESTRICT	{ Lex->drop_mode= DROP_RESTRICT; }
	| CASCADE	{ Lex->drop_mode= DROP_CASCADE; }
	;
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opt_place:
	/* empty */	{}
	| AFTER_SYM ident { store_position_for_column($2.str); }
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	| FIRST_SYM	  { store_position_for_column(first_keyword); };
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opt_to:
	/* empty */	{}
	| TO_SYM	{}
5259
	| EQ		{}
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	| AS		{};
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/*
5263
  SLAVE START and SLAVE STOP are deprecated. We keep them for compatibility.
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*/

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slave:
5267
	  START_SYM SLAVE slave_thread_opts
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          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_START;
	    lex->type = 0;
	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
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            /* If you change this code don't forget to update SLAVE START too */
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          }
          slave_until
          {}
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        | STOP_SYM SLAVE slave_thread_opts
          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_STOP;
	    lex->type = 0;
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            /* If you change this code don't forget to update SLAVE STOP too */
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          }
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	| SLAVE START_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_START;
	   lex->type = 0;
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	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
          }
          slave_until
          {}
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	| SLAVE STOP_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_STOP;
	   lex->type = 0;
         }
        ;

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start:
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	START_SYM TRANSACTION_SYM start_transaction_opts
        {
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          LEX *lex= Lex;
          lex->sql_command= SQLCOM_BEGIN;
          lex->start_transaction_opt= $3;
5310
        }
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	;

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start_transaction_opts:
        /*empty*/ { $$ = 0; }
        | WITH CONSISTENT_SYM SNAPSHOT_SYM
        {
           $$= MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT;
        }
5319
        ;
5320

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slave_thread_opts:
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	{ Lex->slave_thd_opt= 0; }
	slave_thread_opt_list
5324
        {}
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	;
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slave_thread_opt_list:
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	slave_thread_opt
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	| slave_thread_opt_list ',' slave_thread_opt
	;
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slave_thread_opt:
5333
	/*empty*/	{}
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	| SQL_THREAD	{ Lex->slave_thd_opt|=SLAVE_SQL; }
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	| RELAY_THREAD 	{ Lex->slave_thd_opt|=SLAVE_IO; }
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	;
5337

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slave_until:
	/*empty*/	{}
	| UNTIL_SYM slave_until_opts
          {
            LEX *lex=Lex;
            if ((lex->mi.log_file_name || lex->mi.pos) &&
                (lex->mi.relay_log_name || lex->mi.relay_log_pos) ||
                !((lex->mi.log_file_name && lex->mi.pos) ||
                  (lex->mi.relay_log_name && lex->mi.relay_log_pos)))
            {
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               my_message(ER_BAD_SLAVE_UNTIL_COND,
                          ER(ER_BAD_SLAVE_UNTIL_COND), MYF(0));
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               YYABORT;
            }

          }
	;

slave_until_opts:
       master_file_def
       | slave_until_opts ',' master_file_def ;


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restore:
	RESTORE_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_RESTORE_TABLE;
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           push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN,
                               ER_WARN_DEPRECATED_STATEMENT,
                               ER(ER_WARN_DEPRECATED_STATEMENT),
                               "RESTORE TABLE", "5.2",
                               "mysqldump, mysql, MySQL Administrator");
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	}
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	table_list FROM TEXT_STRING_sys
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        {
	  Lex->backup_dir = $6.str;
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        };
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backup:
	BACKUP_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_BACKUP_TABLE;
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           push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN,
                               ER_WARN_DEPRECATED_STATEMENT,
                               ER(ER_WARN_DEPRECATED_STATEMENT),
                               "BACKUP TABLE", "5.2",
                               "mysqldump, mysql, MySQL Administrator");
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	}
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	table_list TO_SYM TEXT_STRING_sys
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        {
	  Lex->backup_dir = $6.str;
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        };
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checksum:
        CHECKSUM_SYM table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECKSUM;
	}
5397 5398
	table_list opt_checksum_type
        {}
5399 5400
	;

5401 5402 5403 5404 5405 5406
opt_checksum_type:
        /* nothing */  { Lex->check_opt.flags= 0; }
	| QUICK        { Lex->check_opt.flags= T_QUICK; }
	| EXTENDED_SYM { Lex->check_opt.flags= T_EXTEND; }
        ;

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repair:
5408
	REPAIR opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_REPAIR;
5412
           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_repair_type
	{}
	;
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opt_mi_repair_type:
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	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
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	| mi_repair_types {};
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mi_repair_types:
	mi_repair_type {}
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	| mi_repair_type mi_repair_types {};
5426

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mi_repair_type:
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	QUICK          { Lex->check_opt.flags|= T_QUICK; }
5429
	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
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        | USE_FRM      { Lex->check_opt.sql_flags|= TT_USEFRM; };
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analyze:
5433
	ANALYZE_SYM opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_ANALYZE;
5437
           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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5443

5444 5445 5446 5447 5448 5449
binlog_base64_event:
        BINLOG_SYM TEXT_STRING_sys
        {
           Lex->sql_command = SQLCOM_BINLOG_BASE64_EVENT;
           Lex->comment= $2;
        }
5450
        ;
5451

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check:
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5453
	CHECK_SYM table_or_tables
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	{
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	  LEX *lex=Lex;

	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "CHECK");
	    YYABORT;
	  }
	  lex->sql_command = SQLCOM_CHECK;
	  lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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opt_mi_check_type:
	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
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	| mi_check_types {};
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mi_check_types:
	mi_check_type {}
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	| mi_check_type mi_check_types {};
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mi_check_type:
	QUICK      { Lex->check_opt.flags|= T_QUICK; }
	| FAST_SYM { Lex->check_opt.flags|= T_FAST; }
	| MEDIUM_SYM { Lex->check_opt.flags|= T_MEDIUM; }
	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
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	| CHANGED  { Lex->check_opt.flags|= T_CHECK_ONLY_CHANGED; }
        | FOR_SYM UPGRADE_SYM { Lex->check_opt.sql_flags|= TT_FOR_UPGRADE; };
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5484

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5485
optimize:
5486
	OPTIMIZE opt_no_write_to_binlog table_or_tables
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5487
	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_OPTIMIZE;
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           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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5497 5498 5499
opt_no_write_to_binlog:
	/* empty */        { $$= 0; }
	| NO_WRITE_TO_BINLOG  { $$= 1; }
5500
	| LOCAL_SYM  { $$= 1; }
5501 5502
	;

5503 5504 5505
rename:
	RENAME table_or_tables
	{
5506
          Lex->sql_command= SQLCOM_RENAME_TABLE;
5507
	}
5508 5509
	table_to_table_list
	{}
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	| RENAME DATABASE
          {
            Lex->db_list.empty();
            Lex->sql_command= SQLCOM_RENAME_DB;
          }
          db_to_db
          {}
5517 5518 5519 5520
	| RENAME USER clear_privileges rename_list
          {
	    Lex->sql_command = SQLCOM_RENAME_USER;
          }
5521
	;
5522

5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535
rename_list:
        user TO_SYM user
        {
          if (Lex->users_list.push_back($1) || Lex->users_list.push_back($3))
            YYABORT;
        }
        | rename_list ',' user TO_SYM user
          {
            if (Lex->users_list.push_back($3) || Lex->users_list.push_back($5))
              YYABORT;
          }
        ;

5536 5537
table_to_table_list:
	table_to_table
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	| table_to_table_list ',' table_to_table;
5539 5540 5541

table_to_table:
	table_ident TO_SYM table_ident
5542
	{
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5543
	  LEX *lex=Lex;
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5544
	  SELECT_LEX *sl= lex->current_select;
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	  if (!sl->add_table_to_list(lex->thd, $1,NULL,TL_OPTION_UPDATING,
				     TL_IGNORE) ||
	      !sl->add_table_to_list(lex->thd, $3,NULL,TL_OPTION_UPDATING,
				     TL_IGNORE))
5549
	    YYABORT;
5550
	};
5551

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db_to_db:
	ident TO_SYM ident
	{
	  LEX *lex=Lex;
          if (Lex->db_list.push_back((LEX_STRING*)
                                     sql_memdup(&$1, sizeof(LEX_STRING))) ||
              Lex->db_list.push_back((LEX_STRING*)
                                     sql_memdup(&$3, sizeof(LEX_STRING))))
              YYABORT;
	};

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keycache:
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        CACHE_SYM INDEX_SYM keycache_list IN_SYM key_cache_name
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        {
          LEX *lex=Lex;
5567
          lex->sql_command= SQLCOM_ASSIGN_TO_KEYCACHE;
5568
	  lex->ident= $5;
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        }
        ;

keycache_list:
        assign_to_keycache
        | keycache_list ',' assign_to_keycache;

assign_to_keycache:
5577
        table_ident cache_keys_spec
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        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          if (!sel->add_table_to_list(lex->thd, $1, NULL, 0,
                                      TL_READ,
                                      sel->get_use_index(),
5584
                                      (List<String> *)0))
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            YYABORT;
        }
        ;

5589 5590 5591
key_cache_name:
	ident	   { $$= $1; }
	| DEFAULT  { $$ = default_key_cache_base; }
5592
	;
5593

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preload:
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	LOAD INDEX_SYM INTO CACHE_SYM
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	{
	  LEX *lex=Lex;
	  lex->sql_command=SQLCOM_PRELOAD_KEYS;
	}
	preload_list
	{}
	;

preload_list:
	preload_keys
	| preload_list ',' preload_keys;

preload_keys:
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	table_ident cache_keys_spec opt_ignore_leaves
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	{
	  LEX *lex=Lex;
	  SELECT_LEX *sel= &lex->select_lex;
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	  if (!sel->add_table_to_list(lex->thd, $1, NULL, $3,
                                      TL_READ,
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                                      sel->get_use_index(),
                                      (List<String> *)0))
            YYABORT;
	}
	;

5621
cache_keys_spec:
5622
        { Select->interval_list.empty(); }
5623 5624 5625 5626 5627 5628 5629
        cache_key_list_or_empty
        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          sel->use_index= sel->interval_list;
        }
        ;
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cache_key_list_or_empty:
5632
	/* empty */	{ Lex->select_lex.use_index_ptr= 0; }
5633
	| opt_key_or_index '(' key_usage_list2 ')'
5634 5635 5636 5637
	  {
            SELECT_LEX *sel= &Lex->select_lex;
	    sel->use_index_ptr= &sel->use_index;
	  }
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	;

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opt_ignore_leaves:
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	/* empty */
	{ $$= 0; }
	| IGNORE_SYM LEAVES { $$= TL_OPTION_IGNORE_LEAVES; }
	;

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5646
/*
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5647
  Select : retrieve data from table
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*/


select:
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	select_init
	{
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_SELECT;
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	}
	;
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5659
/* Need select_init2 for subselects. */
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select_init:
5661
	SELECT_SYM select_init2
5662
	|
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	'(' select_paren ')' union_opt;

select_paren:
	SELECT_SYM select_part2
5667
	  {
5668
	    LEX *lex= Lex;
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            SELECT_LEX * sel= lex->current_select;
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	    if (sel->set_braces(1))
5671
	    {
5672
	      yyerror(ER(ER_SYNTAX_ERROR));
5673 5674
	      YYABORT;
	    }
5675 5676
	  if (sel->linkage == UNION_TYPE &&
	      !sel->master_unit()->first_select()->braces)
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5677
	  {
5678
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
5681
            /* select in braces, can't contain global parameters */
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	    if (sel->master_unit()->fake_select_lex)
              sel->master_unit()->global_parameters=
                 sel->master_unit()->fake_select_lex;
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          }
	| '(' select_paren ')';
5687

5688 5689
select_init2:
	select_part2
5690
        {
5691
	  LEX *lex= Lex;
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          SELECT_LEX * sel= lex->current_select;
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5693
          if (lex->current_select->set_braces(0))
5694
	  {
5695
	    yyerror(ER(ER_SYNTAX_ERROR));
5696 5697
	    YYABORT;
	  }
5698 5699
	  if (sel->linkage == UNION_TYPE &&
	      sel->master_unit()->first_select()->braces)
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	  {
5701
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
5704
	}
5705
	union_clause
5706 5707
	;

5708
select_part2:
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5709
	{
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	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->linkage != UNION_TYPE)
	    mysql_init_select(lex);
5714
	  lex->current_select->parsing_place= SELECT_LIST;
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	}
	select_options select_item_list
	{
5718
	  Select->parsing_place= NO_MATTER;
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	}
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	select_into select_lock_type;
5721

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select_into:
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	opt_order_clause opt_limit_clause {}
5724
        | into
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	| select_from
5726 5727
	| into select_from
	| select_from into;
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select_from:
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	  FROM join_table_list where_clause group_clause having_clause
	       opt_order_clause opt_limit_clause procedure_clause
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        | FROM DUAL_SYM where_clause opt_limit_clause
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          /* oracle compatibility: oracle always requires FROM clause,
             and DUAL is system table without fields.
             Is "SELECT 1 FROM DUAL" any better than "SELECT 1" ?
          Hmmm :) */
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	;
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select_options:
	/* empty*/
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	| select_option_list
	  {
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	    if (Select->options & SELECT_DISTINCT && Select->options & SELECT_ALL)
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	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "ALL", "DISTINCT");
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              YYABORT;
	    }
          }
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	  ;
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select_option_list:
	select_option_list select_option
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	| select_option;
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select_option:
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	STRAIGHT_JOIN { Select->options|= SELECT_STRAIGHT_JOIN; }
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	| HIGH_PRIORITY
	  {
	    if (check_simple_select())
	      YYABORT;
	    Lex->lock_option= TL_READ_HIGH_PRIORITY;
	  }
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	| DISTINCT         { Select->options|= SELECT_DISTINCT; }
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	| SQL_SMALL_RESULT { Select->options|= SELECT_SMALL_RESULT; }
	| SQL_BIG_RESULT { Select->options|= SELECT_BIG_RESULT; }
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	| SQL_BUFFER_RESULT
	  {
	    if (check_simple_select())
	      YYABORT;
	    Select->options|= OPTION_BUFFER_RESULT;
	  }
	| SQL_CALC_FOUND_ROWS
	  {
	    if (check_simple_select())
	      YYABORT;
	    Select->options|= OPTION_FOUND_ROWS;
	  }
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	| SQL_NO_CACHE_SYM { Lex->safe_to_cache_query=0; }
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	| SQL_CACHE_SYM
	  {
	    Lex->select_lex.options|= OPTION_TO_QUERY_CACHE;
	  }
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	| ALL		    { Select->options|= SELECT_ALL; }
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	;
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select_lock_type:
	/* empty */
	| FOR_SYM UPDATE_SYM
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	  {
	    LEX *lex=Lex;
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	    lex->current_select->set_lock_for_tables(TL_WRITE);
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	    lex->safe_to_cache_query=0;
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	  }
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	| LOCK_SYM IN_SYM SHARE_SYM MODE_SYM
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	  {
	    LEX *lex=Lex;
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	    lex->current_select->
	      set_lock_for_tables(TL_READ_WITH_SHARED_LOCKS);
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	    lex->safe_to_cache_query=0;
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	  }
	;
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select_item_list:
	  select_item_list ',' select_item
	| select_item
	| '*'
	  {
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	    THD *thd= YYTHD;
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	    if (add_item_to_list(thd,
                                 new Item_field(&thd->lex->current_select->
                                                context,
                                                NULL, NULL, "*")))
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	      YYABORT;
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	    (thd->lex->current_select->with_wild)++;
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	  };
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select_item:
	  remember_name select_item2 remember_end select_alias
	  {
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	    if (add_item_to_list(YYTHD, $2))
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	      YYABORT;
	    if ($4.str)
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            {
	      $2->set_name($4.str, $4.length, system_charset_info);
              $2->is_autogenerated_name= FALSE;
            }
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	    else if (!$2->name) {
	      char *str = $1;
	      if (str[-1] == '`')
	        str--;
	      $2->set_name(str,(uint) ($3 - str), YYTHD->charset());
	    }
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	  };
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remember_name:
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	{ $$=(char*) Lex->tok_start; };
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remember_end:
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	{ $$=(char*) Lex->tok_end; };
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select_item2:
	table_wild	{ $$=$1; } /* table.* */
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	| expr		{ $$=$1; };
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select_alias:
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	/* empty */		{ $$=null_lex_str;}
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	| AS ident		{ $$=$2; }
	| AS TEXT_STRING_sys	{ $$=$2; }
	| ident			{ $$=$1; }
	| TEXT_STRING_sys	{ $$=$1; }
	;
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optional_braces:
	/* empty */ {}
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	| '(' ')' {};
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/* all possible expressions */
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expr:	
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	  bool_term { Select->expr_list.push_front(new List<Item>); }
          bool_or_expr
          {
            List<Item> *list= Select->expr_list.pop();
            if (list->elements)
            {
              list->push_front($1);
              $$= new Item_cond_or(*list);
              /* optimize construction of logical OR to reduce
                 amount of objects for complex expressions */
            }
            else
              $$= $1;
            delete list;
          }
	;

bool_or_expr:
	/* empty */
        | bool_or_expr or bool_term
          { Select->expr_list.head()->push_back($3); }
        ;
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bool_term:
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	bool_term XOR bool_term { $$= new Item_cond_xor($1,$3); }
	| bool_factor { Select->expr_list.push_front(new List<Item>); }
          bool_and_expr
          {
            List<Item> *list= Select->expr_list.pop();
            if (list->elements)
            {
              list->push_front($1);
              $$= new Item_cond_and(*list);
              /* optimize construction of logical AND to reduce
                 amount of objects for complex expressions */
            }
            else
              $$= $1;
            delete list;
          }
	;

bool_and_expr:
	/* empty */
        | bool_and_expr and bool_factor
          { Select->expr_list.head()->push_back($3); }
        ;
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bool_factor:
	NOT_SYM bool_factor	{ $$= negate_expression(YYTHD, $2); }
	| bool_test ;

bool_test:
	bool_pri IS TRUE_SYM	{ $$= is_truth_value($1,1,0); }
	| bool_pri IS not TRUE_SYM { $$= is_truth_value($1,0,0); }
	| bool_pri IS FALSE_SYM	{ $$= is_truth_value($1,0,1); }
	| bool_pri IS not FALSE_SYM { $$= is_truth_value($1,1,1); }
	| bool_pri IS UNKNOWN_SYM { $$= new Item_func_isnull($1); }
	| bool_pri IS not UNKNOWN_SYM { $$= new Item_func_isnotnull($1); }
	| bool_pri ;

bool_pri:
	bool_pri IS NULL_SYM	{ $$= new Item_func_isnull($1); }
	| bool_pri IS not NULL_SYM { $$= new Item_func_isnotnull($1); }
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	| bool_pri EQUAL_SYM predicate	{ $$= new Item_func_equal($1,$3); }
	| bool_pri comp_op predicate %prec EQ
	  { $$= (*$2)(0)->create($1,$3); }
	| bool_pri comp_op all_or_any in_subselect %prec EQ
	  { $$= all_any_subquery_creator($1, $2, $3, $4); }
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	| predicate ;

predicate:
	 bit_expr IN_SYM '(' expr_list ')'
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	  { 
            if ($4->elements == 1)
              $$= new Item_func_eq($1, $4->head());
            else
            {
              $4->push_front($1);
              $$= new Item_func_in(*$4);
            }
          }
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	| bit_expr not IN_SYM '(' expr_list ')'
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          {
            if ($5->elements == 1)
              $$= new Item_func_ne($1, $5->head());
            else
            {
              $5->push_front($1);
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              Item_func_in *item = new Item_func_in(*$5);
              item->negate();
              $$= item;
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            }            
          }
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        | bit_expr IN_SYM in_subselect
	  { $$= new Item_in_subselect($1, $3); }
	| bit_expr not IN_SYM in_subselect
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          { $$= negate_expression(YYTHD, new Item_in_subselect($1, $4)); }
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	| bit_expr BETWEEN_SYM bit_expr AND_SYM predicate
	  { $$= new Item_func_between($1,$3,$5); }
	| bit_expr not BETWEEN_SYM bit_expr AND_SYM predicate
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    {
      Item_func_between *item= new Item_func_between($1,$4,$6);
      item->negate();
      $$= item;
    }
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	| bit_expr SOUNDS_SYM LIKE bit_expr
	  { $$= new Item_func_eq(new Item_func_soundex($1),
				 new Item_func_soundex($4)); }
	| bit_expr LIKE simple_expr opt_escape
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          { $$= new Item_func_like($1,$3,$4,Lex->escape_used); }
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	| bit_expr not LIKE simple_expr opt_escape
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          { $$= new Item_func_not(new Item_func_like($1,$4,$5, Lex->escape_used)); }
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	| bit_expr REGEXP bit_expr	{ $$= new Item_func_regex($1,$3); }
	| bit_expr not REGEXP bit_expr
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          { $$= negate_expression(YYTHD, new Item_func_regex($1,$4)); }
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	| bit_expr ;

bit_expr:
	bit_expr '|' bit_term	{ $$= new Item_func_bit_or($1,$3); }
	| bit_term ;

bit_term:
	bit_term '&' bit_factor	{ $$= new Item_func_bit_and($1,$3); }
	| bit_factor ;

bit_factor:
	bit_factor SHIFT_LEFT value_expr
	  { $$= new Item_func_shift_left($1,$3); }
	| bit_factor SHIFT_RIGHT value_expr 
	  { $$= new Item_func_shift_right($1,$3); }
	| value_expr ;

value_expr:
	value_expr '+' term	{ $$= new Item_func_plus($1,$3); }
	| value_expr '-' term	{ $$= new Item_func_minus($1,$3); }
	| value_expr '+' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,0); }
	| value_expr '-' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,1); }
	| term ;

term:
	term '*' factor		{ $$= new Item_func_mul($1,$3); }
	| term '/' factor	{ $$= new Item_func_div($1,$3); }
	| term '%' factor	{ $$= new Item_func_mod($1,$3); }
	| term DIV_SYM factor	{ $$= new Item_func_int_div($1,$3); }
	| term MOD_SYM factor	{ $$= new Item_func_mod($1,$3); }
	| factor ;

factor:
        factor '^' simple_expr	{ $$= new Item_func_bit_xor($1,$3); }
	| simple_expr ;

or:	OR_SYM | OR2_SYM;
and:	AND_SYM | AND_AND_SYM;
not:	NOT_SYM | NOT2_SYM;
not2:	'!' | NOT2_SYM;
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comp_op:  EQ		{ $$ = &comp_eq_creator; }
	| GE		{ $$ = &comp_ge_creator; }
	| GT_SYM	{ $$ = &comp_gt_creator; }
	| LE		{ $$ = &comp_le_creator; }
	| LT		{ $$ = &comp_lt_creator; }
	| NE		{ $$ = &comp_ne_creator; }
	;

all_or_any: ALL     { $$ = 1; }
        |   ANY_SYM { $$ = 0; }
        ;

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interval_expr:
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         INTERVAL_SYM expr { $$=$2; }
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        ;

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simple_expr:
	simple_ident
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 	| simple_expr COLLATE_SYM ident_or_text %prec NEG
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	  {
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	    $$= new Item_func_set_collation($1,
					    new Item_string($3.str,
							    $3.length,
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                                                            YYTHD->charset()));
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	  }
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	| literal
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	| param_marker
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	| '@' ident_or_text SET_VAR expr
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	  {
	    $$= new Item_func_set_user_var($2,$4);
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	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
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	  }
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	| '@' ident_or_text
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	  {
	    $$= new Item_func_get_user_var($2);
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	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
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	  }
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	| '@' '@' opt_var_ident_type ident_or_text opt_component
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	  {
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            if ($4.str && $5.str && check_reserved_words(&$4))
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
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	    if (!($$= get_system_var(YYTHD, $3, $4, $5)))
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	      YYABORT;
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	    Lex->variables_used= 1;
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	  }
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	| sum_expr
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	| simple_expr OR_OR_SYM simple_expr
	  { $$= new Item_func_concat($1, $3); }
	| '+' simple_expr %prec NEG	{ $$= $2; }
	| '-' simple_expr %prec NEG	{ $$= new Item_func_neg($2); }
	| '~' simple_expr %prec NEG	{ $$= new Item_func_bit_neg($2); }
	| not2 simple_expr %prec NEG	{ $$= negate_expression(YYTHD, $2); }
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	| '(' expr ')'		{ $$= $2; }
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	| '(' expr ',' expr_list ')'
	  {
	    $4->push_front($2);
	    $$= new Item_row(*$4);
	  }
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	| ROW_SYM '(' expr ',' expr_list ')'
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	  {
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	    $5->push_front($3);
	    $$= new Item_row(*$5);
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	  }
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	| EXISTS exists_subselect { $$= $2; }
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	| singlerow_subselect   { $$= $1; }
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	| '{' ident expr '}'	{ $$= $3; }
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        | MATCH ident_list_arg AGAINST '(' bit_expr fulltext_options ')'
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          { $2->push_front($5);
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            Select->add_ftfunc_to_list((Item_func_match*)
                                        ($$=new Item_func_match(*$2,$6))); }
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	| ASCII_SYM '(' expr ')' { $$= new Item_func_ascii($3); }
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	| BINARY simple_expr %prec NEG
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	  {
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            $$= create_func_cast($2, ITEM_CAST_CHAR, -1, 0, &my_charset_bin);
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	  }
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	| CAST_SYM '(' expr AS cast_type ')'
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	  {
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            LEX *lex= Lex;
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	    $$= create_func_cast($3, $5,
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                                 lex->length ? atoi(lex->length) : -1,
                                 lex->dec ? atoi(lex->dec) : 0,
                                 lex->charset);
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	  }
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	| CASE_SYM opt_expr WHEN_SYM when_list opt_else END
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	  { $$= new Item_func_case(* $4, $2, $5 ); }
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	| CONVERT_SYM '(' expr ',' cast_type ')'
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	  {
	    $$= create_func_cast($3, $5,
				 Lex->length ? atoi(Lex->length) : -1,
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                                 Lex->dec ? atoi(Lex->dec) : 0,
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				 Lex->charset);
	  }
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	| CONVERT_SYM '(' expr USING charset_name ')'
	  { $$= new Item_func_conv_charset($3,$5); }
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	| DEFAULT '(' simple_ident ')'
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	  {
	    if ($3->is_splocal())
	    {
	      Item_splocal *il= static_cast<Item_splocal *>($3);

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	      my_error(ER_WRONG_COLUMN_NAME, MYF(0), il->my_name()->str);
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	      YYABORT;
	    }
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	    $$= new Item_default_value(Lex->current_context(), $3);
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	  }
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	| VALUES '(' simple_ident_nospvar ')'
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	  { $$= new Item_insert_value(Lex->current_context(), $3); }
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	| FUNC_ARG0 '(' ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(void))($1.symbol->create_func))();
	  }
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	| FUNC_ARG1 '(' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*))($1.symbol->create_func))($3);
	  }
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	| FUNC_ARG2 '(' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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	      my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*))($1.symbol->create_func))($3,$5);
	  }
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	| FUNC_ARG3 '(' expr ',' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*,Item*))($1.symbol->create_func))($3,$5,$7);
	  }
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	| ADDDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 0);}
	| ADDDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 0); }
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	| REPEAT_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_repeat($3,$5); }
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	| ATAN	'(' expr ')'
	  { $$= new Item_func_atan($3); }
	| ATAN	'(' expr ',' expr ')'
	  { $$= new Item_func_atan($3,$5); }
	| CHAR_SYM '(' expr_list ')'
	  { $$= new Item_func_char(*$3); }
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	| CHAR_SYM '(' expr_list USING charset_name ')'
	  { $$= new Item_func_char(*$3, $5); }
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	| CHARSET '(' expr ')'
	  { $$= new Item_func_charset($3); }
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	| COALESCE '(' expr_list ')'
	  { $$= new Item_func_coalesce(* $3); }
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	| COLLATION_SYM '(' expr ')'
	  { $$= new Item_func_collation($3); }
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	| CONCAT '(' expr_list ')'
	  { $$= new Item_func_concat(* $3); }
	| CONCAT_WS '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_concat_ws(*$5); }
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	| CONVERT_TZ_SYM '(' expr ',' expr ',' expr ')'
	  {
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            if (Lex->add_time_zone_tables_to_query_tables(YYTHD))
              YYABORT;
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	    $$= new Item_func_convert_tz($3, $5, $7);
	  }
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	| CURDATE optional_braces
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	  { $$= new Item_func_curdate_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME optional_braces
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	  { $$= new Item_func_curtime_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME '(' expr ')'
6213
	  {
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	    $$= new Item_func_curtime_local($3);
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	    Lex->safe_to_cache_query=0;
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	  }
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	| CURRENT_USER optional_braces
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          { $$= create_func_current_user(); }
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	| DATE_ADD_INTERVAL '(' expr ',' interval_expr interval ')'
	  { $$= new Item_date_add_interval($3,$5,$6,0); }
	| DATE_SUB_INTERVAL '(' expr ',' interval_expr interval ')'
	  { $$= new Item_date_add_interval($3,$5,$6,1); }
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	| DATABASE '(' ')'
6224
	  {
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	    $$= new Item_func_database();
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            Lex->safe_to_cache_query=0;
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	  }
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	| DATE_SYM '(' expr ')'
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	  { $$= new Item_date_typecast($3); }
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	| DAY_SYM '(' expr ')'
	  { $$= new Item_func_dayofmonth($3); }
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	| ELT_FUNC '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_elt(*$5); }
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	| MAKE_SET_SYM '(' expr ',' expr_list ')'
	  { $$= new Item_func_make_set($3, *$5); }
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	| ENCRYPT '(' expr ')'
	  {
	    $$= new Item_func_encrypt($3);
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	    Lex->uncacheable(UNCACHEABLE_RAND);
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	  }
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	| ENCRYPT '(' expr ',' expr ')'   { $$= new Item_func_encrypt($3,$5); }
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	| DECODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	  { $$= new Item_func_decode($3,$5.str); }
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	| ENCODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	 { $$= new Item_func_encode($3,$5.str); }
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	| DES_DECRYPT_SYM '(' expr ')'
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        { $$= new Item_func_des_decrypt($3); }
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	| DES_DECRYPT_SYM '(' expr ',' expr ')'
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        { $$= new Item_func_des_decrypt($3,$5); }
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	| DES_ENCRYPT_SYM '(' expr ')'
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        { $$= new Item_func_des_encrypt($3); }
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	| DES_ENCRYPT_SYM '(' expr ',' expr ')'
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        { $$= new Item_func_des_encrypt($3,$5); }
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	| EXPORT_SET '(' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7); }
	| EXPORT_SET '(' expr ',' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7, $9); }
	| EXPORT_SET '(' expr ',' expr ',' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7, $9, $11); }
	| FORMAT_SYM '(' expr ',' NUM ')'
	  { $$= new Item_func_format($3,atoi($5.str)); }
	| FROM_UNIXTIME '(' expr ')'
	  { $$= new Item_func_from_unixtime($3); }
	| FROM_UNIXTIME '(' expr ',' expr ')'
	  {
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	    $$= new Item_func_date_format (new Item_func_from_unixtime($3),$5,0);
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	  }
	| FIELD_FUNC '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_field(*$5); }
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	| geometry_function
	  {
#ifdef HAVE_SPATIAL
	    $$= $1;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  }
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	| GET_FORMAT '(' date_time_type  ',' expr ')'
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	  { $$= new Item_func_get_format($3, $5); }
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	| HOUR_SYM '(' expr ')'
	  { $$= new Item_func_hour($3); }
	| IF '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_if($3,$5,$7); }
	| INSERT '(' expr ',' expr ',' expr ',' expr ')'
	  { $$= new Item_func_insert($3,$5,$7,$9); }
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	| interval_expr interval '+' expr
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	  /* we cannot put interval before - */
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	  { $$= new Item_date_add_interval($4,$1,$2,0); }
	| interval_expr
	  {
            if ($1->type() != Item::ROW_ITEM)
            {
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              yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
            $$= new Item_func_interval((Item_row *)$1);
          }
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	| LAST_INSERT_ID '(' ')'
	  {
6302
	    $$= new Item_func_last_insert_id();
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	    Lex->safe_to_cache_query= 0;
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	  }
	| LAST_INSERT_ID '(' expr ')'
	  {
6307
	    $$= new Item_func_last_insert_id($3);
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	    Lex->safe_to_cache_query= 0;
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	  }
	| LEFT '(' expr ',' expr ')'
	  { $$= new Item_func_left($3,$5); }
	| LOCATE '(' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3); }
	| LOCATE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3,$7); }
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	| GREATEST_SYM '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_max(*$5); }
	| LEAST_SYM '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_min(*$5); }
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	| LOG_SYM '(' expr ')'
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	  { $$= new Item_func_log($3); }
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	| LOG_SYM '(' expr ',' expr ')'
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	  { $$= new Item_func_log($3, $5); }
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	| MASTER_POS_WAIT '(' expr ',' expr ')'
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	  {
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	    $$= new Item_master_pos_wait($3, $5);
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	    Lex->safe_to_cache_query=0;
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		  }
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	| MASTER_POS_WAIT '(' expr ',' expr ',' expr ')'
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	  {
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	    $$= new Item_master_pos_wait($3, $5, $7);
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	    Lex->safe_to_cache_query=0;
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	  }
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	| MICROSECOND_SYM '(' expr ')'
	  { $$= new Item_func_microsecond($3); }
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	| MINUTE_SYM '(' expr ')'
	  { $$= new Item_func_minute($3); }
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	| MOD_SYM '(' expr ',' expr ')'
	  { $$ = new Item_func_mod( $3, $5); }
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	| MONTH_SYM '(' expr ')'
	  { $$= new Item_func_month($3); }
	| NOW_SYM optional_braces
6343
	  { $$= new Item_func_now_local(); Lex->safe_to_cache_query=0;}
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	| NOW_SYM '(' expr ')'
6345
	  { $$= new Item_func_now_local($3); Lex->safe_to_cache_query=0;}
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	| PASSWORD '(' expr ')'
6347
	  {
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	    $$= YYTHD->variables.old_passwords ?
              (Item *) new Item_func_old_password($3) :
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	      (Item *) new Item_func_password($3);
	  }
	| OLD_PASSWORD '(' expr ')'
	  { $$=  new Item_func_old_password($3); }
6354
	| POSITION_SYM '(' bit_expr IN_SYM expr ')'
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	  { $$ = new Item_func_locate($5,$3); }
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	| QUARTER_SYM '(' expr ')'
	  { $$ = new Item_func_quarter($3); }
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	| RAND '(' expr ')'
6359
	  { $$= new Item_func_rand($3); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| RAND '(' ')'
6361
	  { $$= new Item_func_rand(); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| REPLACE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_replace($3,$5,$7); }
	| RIGHT '(' expr ',' expr ')'
	  { $$= new Item_func_right($3,$5); }
	| ROUND '(' expr ')'
	  { $$= new Item_func_round($3, new Item_int((char*)"0",0,1),0); }
	| ROUND '(' expr ',' expr ')' { $$= new Item_func_round($3,$5,0); }
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	| ROW_COUNT_SYM '(' ')'
	  {
	    $$= new Item_func_row_count();
	    Lex->safe_to_cache_query= 0;
	  }
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	| SUBDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 1);}
	| SUBDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 1); }
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	| SECOND_SYM '(' expr ')'
	  { $$= new Item_func_second($3); }
	| SUBSTRING '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_substr($3,$5,$7); }
	| SUBSTRING '(' expr ',' expr ')'
	  { $$= new Item_func_substr($3,$5); }
	| SUBSTRING '(' expr FROM expr FOR_SYM expr ')'
	  { $$= new Item_func_substr($3,$5,$7); }
	| SUBSTRING '(' expr FROM expr ')'
	  { $$= new Item_func_substr($3,$5); }
	| SUBSTRING_INDEX '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_substr_index($3,$5,$7); }
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	| SYSDATE optional_braces
	  { $$= new Item_func_sysdate_local(); Lex->safe_to_cache_query=0;}
	| SYSDATE '(' expr ')'
	  { $$= new Item_func_sysdate_local($3); Lex->safe_to_cache_query=0;}
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	| TIME_SYM '(' expr ')'
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	  { $$= new Item_time_typecast($3); }
	| TIMESTAMP '(' expr ')'
	  { $$= new Item_datetime_typecast($3); }
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	| TIMESTAMP '(' expr ',' expr ')'
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	  { $$= new Item_func_add_time($3, $5, 1, 0); }
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	| TIMESTAMP_ADD '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_date_add_interval($7,$5,$3,0); }
	| TIMESTAMP_DIFF '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_func_timestamp_diff($5,$7,$3); }
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	| TRIM '(' expr ')'
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	  { $$= new Item_func_trim($3); }
	| TRIM '(' LEADING expr FROM expr ')'
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	  { $$= new Item_func_ltrim($6,$4); }
6408
	| TRIM '(' TRAILING expr FROM expr ')'
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	  { $$= new Item_func_rtrim($6,$4); }
6410
	| TRIM '(' BOTH expr FROM expr ')'
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	  { $$= new Item_func_trim($6,$4); }
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	| TRIM '(' LEADING FROM expr ')'
	 { $$= new Item_func_ltrim($5); }
	| TRIM '(' TRAILING FROM expr ')'
	  { $$= new Item_func_rtrim($5); }
	| TRIM '(' BOTH FROM expr ')'
	  { $$= new Item_func_trim($5); }
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	| TRIM '(' expr FROM expr ')'
	  { $$= new Item_func_trim($5,$3); }
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	| TRUNCATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_round($3,$5,1); }
6422
	| ident '.' ident '(' udf_expr_list ')'
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	  {
6424
	    LEX *lex= Lex;
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	    sp_name *name= new sp_name($1, $3);

	    name->init_qname(YYTHD);
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	    sp_add_used_routine(lex, YYTHD, name, TYPE_ENUM_FUNCTION);
6429
	    if ($5)
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	      $$= new Item_func_sp(Lex->current_context(), name, *$5);
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	    else
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	      $$= new Item_func_sp(Lex->current_context(), name);
6433
	    lex->safe_to_cache_query=0;
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	  }
6435
	| IDENT_sys '(' 
6436 6437
          {
#ifdef HAVE_DLOPEN
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            udf_func *udf= 0;
            if (using_udf_functions &&
                (udf= find_udf($1.str, $1.length)) &&
                udf->type == UDFTYPE_AGGREGATE)
            {
              LEX *lex= Lex;
              if (lex->current_select->inc_in_sum_expr())
              {
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
              }
            }
            $<udf>$= udf;
#endif
          }
          udf_expr_list ')'
          {
#ifdef HAVE_DLOPEN
            udf_func *udf= $<udf>3;
6457
            SELECT_LEX *sel= Select;
6458

6459
            if (udf)
6460
            {
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              if (udf->type == UDFTYPE_AGGREGATE)
                Select->in_sum_expr--;

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              switch (udf->returns) {
              case STRING_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_str(udf, *$4);
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                  else
                    $$ = new Item_func_udf_str(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_str(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_str(udf);
                }
                break;
              case REAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_float(udf, *$4);
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                  else
                    $$ = new Item_func_udf_float(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_float(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_float(udf);
                }
                break;
              case INT_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_int(udf, *$4);
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                  else
                    $$ = new Item_func_udf_int(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_int(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_int(udf);
                }
                break;
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              case DECIMAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_decimal(udf, *$4);
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                  else
                    $$ = new Item_func_udf_decimal(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_decimal(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_decimal(udf);
                }
                break;
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              default:
                YYABORT;
              }
            }
            else
#endif /* HAVE_DLOPEN */
            {
6536
	      LEX *lex= Lex;
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              sp_name *name= sp_name_current_db_new(YYTHD, $1);

6539
              sp_add_used_routine(lex, YYTHD, name, TYPE_ENUM_FUNCTION);
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              if ($4)
                $$= new Item_func_sp(Lex->current_context(), name, *$4);
6542
              else
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                $$= new Item_func_sp(Lex->current_context(), name);
6544
	      lex->safe_to_cache_query=0;
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	    }
          }
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	| UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' expr_list ')'
6548
	  {
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            $$= new Item_func_unique_users($3,atoi($5.str),atoi($7.str), * $9);
	  }
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	| UNIX_TIMESTAMP '(' ')'
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	  {
	    $$= new Item_func_unix_timestamp();
6554
	    Lex->safe_to_cache_query=0;
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	  }
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	| UNIX_TIMESTAMP '(' expr ')'
	  { $$= new Item_func_unix_timestamp($3); }
	| USER '(' ')'
6559
	  { $$= new Item_func_user(FALSE); Lex->safe_to_cache_query=0; }
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	| UTC_DATE_SYM optional_braces
	  { $$= new Item_func_curdate_utc(); Lex->safe_to_cache_query=0;}
	| UTC_TIME_SYM optional_braces
	  { $$= new Item_func_curtime_utc(); Lex->safe_to_cache_query=0;}
	| UTC_TIMESTAMP_SYM optional_braces
	  { $$= new Item_func_now_utc(); Lex->safe_to_cache_query=0;}
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	| WEEK_SYM '(' expr ')'
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	  {
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            $$= new Item_func_week($3,new Item_int((char*) "0",
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				   YYTHD->variables.default_week_format,1));
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          }
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	| WEEK_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_week($3,$5); }
	| YEAR_SYM '(' expr ')'
	  { $$= new Item_func_year($3); }
	| YEARWEEK '(' expr ')'
	  { $$= new Item_func_yearweek($3,new Item_int((char*) "0",0,1)); }
	| YEARWEEK '(' expr ',' expr ')'
	  { $$= new Item_func_yearweek($3, $5); }
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	| BENCHMARK_SYM '(' ulong_num ',' expr ')'
6580
	  {
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	    $$=new Item_func_benchmark($3,$5);
6582
	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	  }
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	| EXTRACT_SYM '(' interval FROM expr ')'
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	{ $$=new Item_extract( $3, $5); };
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geometry_function:
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	  CONTAINS_SYM '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_spatial_rel($3, $5, Item_func::SP_CONTAINS_FUNC)); }
	| GEOMFROMTEXT '(' expr ')'
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	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| GEOMFROMWKB '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_wkb($3)); }
	| GEOMFROMWKB '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_wkb($3, $5)); }
	| GEOMETRYCOLLECTION '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                           Geometry::wkb_geometrycollection,
                           Geometry::wkb_point)); }
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	| LINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
6604
                  Geometry::wkb_linestring, Geometry::wkb_point)); }
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 	| MULTILINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW( Item_func_spatial_collection(* $3,
6607
                   Geometry::wkb_multilinestring, Geometry::wkb_linestring)); }
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 	| MLINEFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MLINEFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MPOINTFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MPOINTFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MPOLYFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MPOLYFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MULTIPOINT '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_multipoint, Geometry::wkb_point)); }
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 	| MULTIPOLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_multipolygon, Geometry::wkb_polygon)); }
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	| POINT_SYM '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_point($3,$5)); }
 	| POINTFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| POINTFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| POLYFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| POLYFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| POLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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	          Geometry::wkb_polygon, Geometry::wkb_linestring)); }
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 	| GEOMCOLLFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMCOLLFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
 	| LINEFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| LINEFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	;

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fulltext_options:
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          opt_natural_language_mode opt_query_expansion
          { $$= $1 | $2; }
        | IN_SYM BOOLEAN_SYM MODE_SYM
          { $$= FT_BOOL; }
        ;

opt_natural_language_mode:
        /* nothing */                           { $$= FT_NL;  }
        | IN_SYM NATURAL LANGUAGE_SYM MODE_SYM  { $$= FT_NL; }
        ;

opt_query_expansion:
        /* nothing */                           { $$= 0;         }
        | WITH QUERY_SYM EXPANSION_SYM          { $$= FT_EXPAND; }
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        ;

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udf_expr_list:
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	/* empty */	 { $$= NULL; }
	| udf_expr_list2 { $$= $1;}
	;

udf_expr_list2:
	{ Select->expr_list.push_front(new List<Item>); }
	udf_expr_list3
	{ $$= Select->expr_list.pop(); }
	;

udf_expr_list3:
	udf_expr 
	  {
	    Select->expr_list.head()->push_back($1);
	  }
	| udf_expr_list3 ',' udf_expr 
	  {
	    Select->expr_list.head()->push_back($3);
	  }
	;

udf_expr:
	remember_name expr remember_end select_alias
	{
	  if ($4.str)
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          {
	    $2->set_name($4.str, $4.length, system_charset_info);
            $2->is_autogenerated_name= FALSE;
          }
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	  else
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	    $2->set_name($1, (uint) ($3 - $1), YYTHD->charset());
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	  $$= $2;
	}
	;
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sum_expr:
	AVG_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_avg($3); }
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	| AVG_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_avg_distinct($4); }
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	| BIT_AND  '(' in_sum_expr ')'
	  { $$=new Item_sum_and($3); }
	| BIT_OR  '(' in_sum_expr ')'
	  { $$=new Item_sum_or($3); }
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	| BIT_XOR  '(' in_sum_expr ')'
	  { $$=new Item_sum_xor($3); }
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	| COUNT_SYM '(' opt_all '*' ')'
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	  { $$=new Item_sum_count(new Item_int((int32) 0L,1)); }
	| COUNT_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_count($3); }
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	| COUNT_SYM '(' DISTINCT
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	  { Select->in_sum_expr++; }
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	   expr_list
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	  { Select->in_sum_expr--; }
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	  ')'
	  { $$=new Item_sum_count_distinct(* $5); }
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	| GROUP_UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' in_sum_expr ')'
	  { $$= new Item_sum_unique_users($3,atoi($5.str),atoi($7.str),$9); }
	| MIN_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_min($3); }
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/*
   According to ANSI SQL, DISTINCT is allowed and has
   no sence inside MIN and MAX grouping functions; so MIN|MAX(DISTINCT ...)
   is processed like an ordinary MIN | MAX()
 */
	| MIN_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_min($4); }
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	| MAX_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_max($3); }
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	| MAX_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_max($4); }
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	| STD_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_std($3, 0); }
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	| VARIANCE_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_variance($3, 0); }
	| STDDEV_SAMP_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_std($3, 1); }
	| VAR_SAMP_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_variance($3, 1); }
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	| SUM_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_sum($3); }
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	| SUM_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_sum_distinct($4); }
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	| GROUP_CONCAT_SYM '(' opt_distinct
	  { Select->in_sum_expr++; }
	  expr_list opt_gorder_clause
	  opt_gconcat_separator
	 ')'
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	  {
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            SELECT_LEX *sel= Select;
	    sel->in_sum_expr--;
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	    $$=new Item_func_group_concat(Lex->current_context(), $3, $5,
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                                          sel->gorder_list, $7);
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	    $5->empty();
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	  };

opt_distinct:
    /* empty */ { $$ = 0; }
    |DISTINCT   { $$ = 1; };

opt_gconcat_separator:
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    /* empty */        { $$ = new (YYTHD->mem_root) String(",",1,default_charset_info); }
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    |SEPARATOR_SYM text_string  { $$ = $2; };
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opt_gorder_clause:
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	  /* empty */
	  {
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            Select->gorder_list = NULL;
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	  }
	| order_clause
          {
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            SELECT_LEX *select= Select;
            select->gorder_list=
	      (SQL_LIST*) sql_memdup((char*) &select->order_list,
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				     sizeof(st_sql_list));
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	    select->order_list.empty();
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	  };
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in_sum_expr:
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	opt_all
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	{
	  LEX *lex= Lex;
	  if (lex->current_select->inc_in_sum_expr())
	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
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	  }
	}
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	expr
	{
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	  Select->in_sum_expr--;
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	  $$= $3;
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	};
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cast_type:
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        BINARY opt_len		{ $$=ITEM_CAST_CHAR; Lex->charset= &my_charset_bin; Lex->dec= 0; }
        | CHAR_SYM opt_len opt_binary	{ $$=ITEM_CAST_CHAR; Lex->dec= 0; }
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	| NCHAR_SYM opt_len	{ $$=ITEM_CAST_CHAR; Lex->charset= national_charset_info; Lex->dec=0; }
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        | SIGNED_SYM		{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | SIGNED_SYM INT_SYM	{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | UNSIGNED		{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | UNSIGNED INT_SYM	{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DATE_SYM		{ $$=ITEM_CAST_DATE; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | TIME_SYM		{ $$=ITEM_CAST_TIME; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DATETIME		{ $$=ITEM_CAST_DATETIME; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DECIMAL_SYM float_options { $$=ITEM_CAST_DECIMAL; Lex->charset= NULL; }
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	;

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expr_list:
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	{ Select->expr_list.push_front(new List<Item>); }
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	expr_list2
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	{ $$= Select->expr_list.pop(); };
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expr_list2:
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	expr { Select->expr_list.head()->push_back($1); }
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	| expr_list2 ',' expr { Select->expr_list.head()->push_back($3); };
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ident_list_arg:
          ident_list          { $$= $1; }
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        | '(' ident_list ')'  { $$= $2; };
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ident_list:
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        { Select->expr_list.push_front(new List<Item>); }
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        ident_list2
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        { $$= Select->expr_list.pop(); };
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ident_list2:
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        simple_ident { Select->expr_list.head()->push_back($1); }
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        | ident_list2 ',' simple_ident { Select->expr_list.head()->push_back($3); };
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opt_expr:
	/* empty */      { $$= NULL; }
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	| expr           { $$= $1; };
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opt_else:
	/* empty */    { $$= NULL; }
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	| ELSE expr    { $$= $2; };
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when_list:
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        { Select->when_list.push_front(new List<Item>); }
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	when_list2
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	{ $$= Select->when_list.pop(); };
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when_list2:
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	expr THEN_SYM expr
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	  {
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	    SELECT_LEX *sel=Select;
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	    sel->when_list.head()->push_back($1);
	    sel->when_list.head()->push_back($3);
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	}
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	| when_list2 WHEN_SYM expr THEN_SYM expr
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	  {
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	    SELECT_LEX *sel=Select;
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	    sel->when_list.head()->push_back($3);
	    sel->when_list.head()->push_back($5);
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	  };
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/* Warning - may return NULL in case of incomplete SELECT */
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table_ref:
        table_factor            { $$=$1; }
        | join_table            { $$=$1; }
6870
          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->nest_last_join(lex->thd)))
              YYABORT;
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          }
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        ;

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join_table_list:
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	derived_table_list		{ YYERROR_UNLESS($$=$1); }
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	;
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/* Warning - may return NULL in case of incomplete SELECT */
derived_table_list:
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        table_ref { $$=$1; }
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        | derived_table_list ',' table_ref
          {
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            YYERROR_UNLESS($1 && ($$=$3));
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          }
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        ;

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/*
  Notice that JOIN is a left-associative operation, and it must be parsed
  as such, that is, the parser must process first the left join operand
  then the right one. Such order of processing ensures that the parser
  produces correct join trees which is essential for semantic analysis
  and subsequent optimization phases.
*/
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join_table:
6898
/* INNER JOIN variants */
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        /*
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          Use %prec to evaluate production 'table_ref' before 'normal_join'
          so that [INNER | CROSS] JOIN is properly nested as other
          left-associative joins.
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        */
        table_ref %prec TABLE_REF_PRIORITY normal_join table_ref
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          { YYERROR_UNLESS($1 && ($$=$3)); }
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	| table_ref STRAIGHT_JOIN table_factor
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	  { YYERROR_UNLESS($1 && ($$=$3)); $3->straight=1; }
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	| table_ref normal_join table_ref
          ON
          {
            YYERROR_UNLESS($1 && ($$=$3));
            /* Change the current name resolution context to a local context. */
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            if (push_new_name_resolution_context(YYTHD, $1, $3))
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              YYABORT;
          }
          expr
	  {
            add_join_on($3,$6);
            Lex->pop_context();
          }
        | table_ref STRAIGHT_JOIN table_factor
          ON
          {
            YYERROR_UNLESS($1 && ($$=$3));
            /* Change the current name resolution context to a local context. */
6926
            if (push_new_name_resolution_context(YYTHD, $1, $3))
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              YYABORT;
          }
          expr
          {
            $3->straight=1;
            add_join_on($3,$6);
            Lex->pop_context();
          }
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	| table_ref normal_join table_ref
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	  USING
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	  {
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	    SELECT_LEX *sel= Select;
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            YYERROR_UNLESS($1 && $3);
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	  }
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	  '(' using_list ')'
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          { add_join_natural($1,$3,$7); $$=$3; }
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	| table_ref NATURAL JOIN_SYM table_factor
	  {
            YYERROR_UNLESS($1 && ($$=$4));
            add_join_natural($1,$4,NULL);
          }

/* LEFT JOIN variants */
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	| table_ref LEFT opt_outer JOIN_SYM table_ref
          ON
          {
6953
            YYERROR_UNLESS($1 && $5);
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            /* Change the current name resolution context to a local context. */
6955
            if (push_new_name_resolution_context(YYTHD, $1, $5))
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              YYABORT;
          }
          expr
	  {
            add_join_on($5,$8);
            Lex->pop_context();
            $5->outer_join|=JOIN_TYPE_LEFT;
            $$=$5;
          }
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	| table_ref LEFT opt_outer JOIN_SYM table_factor
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	  {
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	    SELECT_LEX *sel= Select;
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            YYERROR_UNLESS($1 && $5);
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	  }
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	  USING '(' using_list ')'
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          { add_join_natural($1,$5,$9); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
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	| table_ref NATURAL LEFT opt_outer JOIN_SYM table_factor
6973
	  {
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            YYERROR_UNLESS($1 && $6);
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 	    add_join_natural($1,$6,NULL);
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	    $6->outer_join|=JOIN_TYPE_LEFT;
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	    $$=$6;
	  }
6979 6980

/* RIGHT JOIN variants */
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	| table_ref RIGHT opt_outer JOIN_SYM table_ref
          ON
          {
6984
            YYERROR_UNLESS($1 && $5);
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            /* Change the current name resolution context to a local context. */
6986
            if (push_new_name_resolution_context(YYTHD, $1, $5))
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              YYABORT;
          }
          expr
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          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
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            add_join_on($$, $8);
            Lex->pop_context();
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          }
	| table_ref RIGHT opt_outer JOIN_SYM table_factor
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	  {
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	    SELECT_LEX *sel= Select;
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            YYERROR_UNLESS($1 && $5);
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	  }
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	  USING '(' using_list ')'
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          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
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            add_join_natural($$,$5,$9);
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          }
	| table_ref NATURAL RIGHT opt_outer JOIN_SYM table_factor
7010
	  {
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            YYERROR_UNLESS($1 && $6);
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	    add_join_natural($6,$1,NULL);
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
7016
	  };
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normal_join:
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	JOIN_SYM		{}
	| INNER_SYM JOIN_SYM	{}
	| CROSS JOIN_SYM	{}
	;
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/* Warning - may return NULL in case of incomplete SELECT */
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table_factor:
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	{
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	  SELECT_LEX *sel= Select;
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	  sel->use_index_ptr=sel->ignore_index_ptr=0;
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	  sel->table_join_options= 0;
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	}
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        table_ident opt_table_alias opt_key_definition
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	{
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	  LEX *lex= Lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (!($$= sel->add_table_to_list(lex->thd, $2, $3,
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					   sel->get_table_join_options(),
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					   lex->lock_option,
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					   sel->get_use_index(),
					   sel->get_ignore_index())))
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	    YYABORT;
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          sel->add_joined_table($$);
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	}
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	| '{' ident table_ref LEFT OUTER JOIN_SYM table_ref
          ON
          {
            /* Change the current name resolution context to a local context. */
7047
            if (push_new_name_resolution_context(YYTHD, $3, $7))
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              YYABORT;
7049

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          }
          expr '}'
	  {
            YYERROR_UNLESS($3 && $7);
            add_join_on($7,$10);
            Lex->pop_context();
            $7->outer_join|=JOIN_TYPE_LEFT;
            $$=$7;
          }
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	| select_derived_init get_select_lex select_derived2
7060
          {
7061
            LEX *lex= Lex;
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            SELECT_LEX *sel= lex->current_select;
            if ($1)
            {
	      if (sel->set_braces(1))
	      {
	        yyerror(ER(ER_SYNTAX_ERROR));
	        YYABORT;
	      }
              /* select in braces, can't contain global parameters */
	      if (sel->master_unit()->fake_select_lex)
                sel->master_unit()->global_parameters=
                   sel->master_unit()->fake_select_lex;
            }
            if ($2->init_nested_join(lex->thd))
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              YYABORT;
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            $$= 0;
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            /* incomplete derived tables return NULL, we must be
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               nested in select_derived rule to be here. */
7080
          }
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	| '(' get_select_lex select_derived union_opt ')' opt_table_alias
	{
          /* Use $2 instead of Lex->current_select as derived table will
             alter value of Lex->current_select. */

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          if (!($3 || $6) && $2->embedding &&
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              !$2->embedding->nested_join->join_list.elements)
7088
          {
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            /* we have a derived table ($3 == NULL) but no alias,
               Since we are nested in further parentheses so we
               can pass NULL to the outer level parentheses
               Permits parsing of "((((select ...))) as xyz)" */
            $$= 0;
7094
          }
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          else
          if (!$3)
          {
            /* Handle case of derived table, alias may be NULL if there
               are no outer parentheses, add_table_to_list() will throw
               error in this case */
	    LEX *lex=Lex;
            SELECT_LEX *sel= lex->current_select;
	    SELECT_LEX_UNIT *unit= sel->master_unit();
	    lex->current_select= sel= unit->outer_select();
	    if (!($$= sel->
                  add_table_to_list(lex->thd, new Table_ident(unit), $6, 0,
				    TL_READ,(List<String> *)0,
	                            (List<String> *)0)))
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	      YYABORT;
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            sel->add_joined_table($$);
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            lex->pop_context();
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          }
	  else
          if ($4 || $6)
	  {
            /* simple nested joins cannot have aliases or unions */
            yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
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	  }
          else
            $$= $3;
	}
        ;
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/* handle contents of parentheses in join expression */
7127
select_derived:
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	  get_select_lex
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	  {
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            LEX *lex= Lex;
            if ($1->init_nested_join(lex->thd))
              YYABORT;
          }
          derived_table_list
          {
            LEX *lex= Lex;
            /* for normal joins, $3 != NULL and end_nested_join() != NULL,
               for derived tables, both must equal NULL */
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            if (!($$= $1->end_nested_join(lex->thd)) && $3)
              YYABORT;
            if (!$3 && $$)
            {
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	      yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
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            }
          }
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 	;
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select_derived2:
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        {
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	  LEX *lex= Lex;
7153
	  lex->derived_tables|= DERIVED_SUBQUERY;
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	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
7157 7158
	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
7159 7160
	    YYABORT;
	  }
7161
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE ||
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              mysql_new_select(lex, 1))
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	    YYABORT;
	  mysql_init_select(lex);
7165
	  lex->current_select->linkage= DERIVED_TABLE_TYPE;
7166
	  lex->current_select->parsing_place= SELECT_LIST;
7167 7168 7169
	}
        select_options select_item_list
	{
7170
	  Select->parsing_place= NO_MATTER;
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	}
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	opt_select_from
7173
        ;
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get_select_lex:
	/* Empty */ { $$= Select; }
        ;

select_derived_init:
          SELECT_SYM
          {
            LEX *lex= Lex;
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            SELECT_LEX *sel= lex->current_select;
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            TABLE_LIST *embedding;
            if (!sel->embedding || sel->end_nested_join(lex->thd))
	    {
              /* we are not in parentheses */
              yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
	    }
            embedding= Select->embedding;
            $$= embedding &&
                !embedding->nested_join->join_list.elements;
            /* return true if we are deeply nested */
          }
        ;

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opt_outer:
	/* empty */	{}
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	| OUTER		{};
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opt_key_definition:
	/* empty */	{}
	| USE_SYM    key_usage_list
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          {
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	    SELECT_LEX *sel= Select;
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	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	  }
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	| FORCE_SYM key_usage_list
          {
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	    SELECT_LEX *sel= Select;
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	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	    sel->table_join_options|= TL_OPTION_FORCE_INDEX;
	  }
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	| IGNORE_SYM key_usage_list
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->ignore_index= *$2;
	    sel->ignore_index_ptr= &sel->ignore_index;
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	  };
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key_usage_list:
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	key_or_index { Select->interval_list.empty(); }
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        '(' key_list_or_empty ')'
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        { $$= &Select->interval_list; }
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	;

key_list_or_empty:
	/* empty */ 		{}
	| key_usage_list2	{}
	;
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key_usage_list2:
	key_usage_list2 ',' ident
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String((const char*) $3.str, $3.length,
7239
				    system_charset_info)); }
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	| ident
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String((const char*) $1.str, $1.length,
7243
				    system_charset_info)); }
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	| PRIMARY_SYM
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String("PRIMARY", 7,
7247
				    system_charset_info)); };
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using_list:
	ident
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	  {
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            if (!($$= new List<String>))
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	      YYABORT;
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            $$->push_back(new (YYTHD->mem_root)
                              String((const char *) $1.str, $1.length,
                                      system_charset_info));
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	  }
	| using_list ',' ident
	  {
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            $1->push_back(new (YYTHD->mem_root)
                              String((const char *) $3.str, $3.length,
                                      system_charset_info));
            $$= $1;
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	  };
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interval:
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	interval_time_st	{}
	| DAY_HOUR_SYM		{ $$=INTERVAL_DAY_HOUR; }
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	| DAY_MICROSECOND_SYM	{ $$=INTERVAL_DAY_MICROSECOND; }
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	| DAY_MINUTE_SYM	{ $$=INTERVAL_DAY_MINUTE; }
	| DAY_SECOND_SYM	{ $$=INTERVAL_DAY_SECOND; }
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	| HOUR_MICROSECOND_SYM	{ $$=INTERVAL_HOUR_MICROSECOND; }
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	| HOUR_MINUTE_SYM	{ $$=INTERVAL_HOUR_MINUTE; }
	| HOUR_SECOND_SYM	{ $$=INTERVAL_HOUR_SECOND; }
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	| MICROSECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
	| MINUTE_MICROSECOND_SYM	{ $$=INTERVAL_MINUTE_MICROSECOND; }
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	| MINUTE_SECOND_SYM	{ $$=INTERVAL_MINUTE_SECOND; }
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	| SECOND_MICROSECOND_SYM	{ $$=INTERVAL_SECOND_MICROSECOND; }
	| YEAR_MONTH_SYM	{ $$=INTERVAL_YEAR_MONTH; };

interval_time_st:
	DAY_SYM			{ $$=INTERVAL_DAY; }
	| WEEK_SYM		{ $$=INTERVAL_WEEK; }
	| HOUR_SYM		{ $$=INTERVAL_HOUR; }
	| FRAC_SECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
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	| MINUTE_SYM		{ $$=INTERVAL_MINUTE; }
	| MONTH_SYM		{ $$=INTERVAL_MONTH; }
7288
	| QUARTER_SYM		{ $$=INTERVAL_QUARTER; }
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	| SECOND_SYM		{ $$=INTERVAL_SECOND; }
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	| YEAR_SYM		{ $$=INTERVAL_YEAR; }
        ;
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7293
date_time_type:
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          DATE_SYM              {$$=MYSQL_TIMESTAMP_DATE;}
        | TIME_SYM              {$$=MYSQL_TIMESTAMP_TIME;}
        | DATETIME              {$$=MYSQL_TIMESTAMP_DATETIME;}
        | TIMESTAMP             {$$=MYSQL_TIMESTAMP_DATETIME;}
        ;
7299

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table_alias:
	/* empty */
	| AS
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	| EQ;
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opt_table_alias:
	/* empty */		{ $$=0; }
	| table_alias ident
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	  { $$= (LEX_STRING*) sql_memdup(&$2,sizeof(LEX_STRING)); };
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opt_all:
	/* empty */
	| ALL
	;
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where_clause:
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	/* empty */  { Select->where= 0; }
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	| WHERE
          {
            Select->parsing_place= IN_WHERE;
          }
          expr
7322
	  {
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            SELECT_LEX *select= Select;
	    select->where= $3;
            select->parsing_place= NO_MATTER;
	    if ($3)
	      $3->top_level_item();
7328
	  }
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 	;
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having_clause:
	/* empty */
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	| HAVING
	  {
7335
	    Select->parsing_place= IN_HAVING;
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          }
	  expr
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->having= $3;
7341
	    sel->parsing_place= NO_MATTER;
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	    if ($3)
	      $3->top_level_item();
	  }
7345
	;
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opt_escape:
7348 7349 7350 7351 7352
	ESCAPE_SYM simple_expr 
          {
            Lex->escape_used= TRUE;
            $$= $2;
          }
7353
	| /* empty */
7354
          {
7355
            Lex->escape_used= FALSE;
7356 7357 7358
            $$= ((YYTHD->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) ?
		 new Item_string("", 0, &my_charset_latin1) :
                 new Item_string("\\", 1, &my_charset_latin1));
7359 7360
          }
        ;
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/*
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   group by statement in select
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*/

group_clause:
	/* empty */
7369
	| GROUP BY group_list olap_opt;
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group_list:
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	group_list ',' order_ident order_dir
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	  { if (add_group_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
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	| order_ident order_dir
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	  { if (add_group_to_list(YYTHD, $1,(bool) $2)) YYABORT; };
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7377 7378
olap_opt:
	/* empty */ {}
7379
	| WITH CUBE_SYM
7380
          {
7381
	    LEX *lex=Lex;
7382 7383
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH CUBE",
7385 7386 7387
		       "global union parameters");
	      YYABORT;
	    }
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	    lex->current_select->olap= CUBE_TYPE;
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	    my_error(ER_NOT_SUPPORTED_YET, MYF(0), "CUBE");
7390
	    YYABORT;	/* To be deleted in 5.1 */
7391
	  }
7392
	| WITH ROLLUP_SYM
7393
          {
7394 7395 7396
	    LEX *lex= Lex;
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH ROLLUP",
7398 7399 7400
		       "global union parameters");
	      YYABORT;
	    }
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	    lex->current_select->olap= ROLLUP_TYPE;
7402
	  }
7403
	;
7404

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/*
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   Order by statement in select
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*/

7409
opt_order_clause:
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	/* empty */
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	| order_clause;
7412 7413

order_clause:
7414 7415
	ORDER_SYM BY
        {
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	  LEX *lex=Lex;
7417
	  if (lex->current_select->linkage != GLOBAL_OPTIONS_TYPE &&
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	      lex->current_select->olap !=
7419
	      UNSPECIFIED_OLAP_TYPE)
7420
	  {
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	    my_error(ER_WRONG_USAGE, MYF(0),
                     "CUBE/ROLLUP", "ORDER BY");
7423 7424
	    YYABORT;
	  }
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	} order_list;
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order_list:
	order_list ',' order_ident order_dir
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	  { if (add_order_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
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	| order_ident order_dir
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	  { if (add_order_to_list(YYTHD, $1,(bool) $2)) YYABORT; };
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order_dir:
	/* empty */ { $$ =  1; }
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	| ASC  { $$ =1; }
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	| DESC { $$ =0; };
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7439 7440 7441
opt_limit_clause_init:
	/* empty */
	{
7442 7443
	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
7444 7445
          sel->offset_limit= 0;
          sel->select_limit= 0;
7446
	}
7447 7448 7449
	| limit_clause {}
	;

7450 7451 7452 7453 7454
opt_limit_clause:
	/* empty */	{}
	| limit_clause	{}
	;

7455
limit_clause:
7456
	LIMIT limit_options {}
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	;
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limit_options:
7460
	limit_option
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	  {
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            SELECT_LEX *sel= Select;
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            sel->select_limit= $1;
7464
            sel->offset_limit= 0;
7465
	    sel->explicit_limit= 1;
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	  }
7467
	| limit_option ',' limit_option
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $3;
	    sel->offset_limit= $1;
7472
	    sel->explicit_limit= 1;
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	  }
7474
	| limit_option OFFSET_SYM limit_option
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $1;
	    sel->offset_limit= $3;
7479
	    sel->explicit_limit= 1;
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	  }
	;
7482 7483 7484 7485 7486
limit_option:
        param_marker
        | ULONGLONG_NUM { $$= new Item_uint($1.str, $1.length); }
        | LONG_NUM     { $$= new Item_uint($1.str, $1.length); }
        | NUM           { $$= new Item_uint($1.str, $1.length); }
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        ;
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delete_limit_clause:
	/* empty */
	{
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	  LEX *lex=Lex;
7493
	  lex->current_select->select_limit= 0;
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	}
7495
	| LIMIT limit_option
7496 7497
	{
	  SELECT_LEX *sel= Select;
7498
	  sel->select_limit= $2;
7499 7500
	  sel->explicit_limit= 1;
	};
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ulong_num:
          NUM           { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
7504
	| HEX_NUM       { $$= (ulong) strtol($1.str, (char**) 0, 16); }
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	| LONG_NUM      { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
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        | DECIMAL_NUM   { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
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	| FLOAT_NUM	{ int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	;
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ulonglong_num:
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	NUM	    { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| LONG_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
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        | DECIMAL_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
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	| FLOAT_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	;
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procedure_clause:
	/* empty */
	| PROCEDURE ident			/* Procedure name */
	  {
	    LEX *lex=Lex;
7524 7525
	    if (&lex->select_lex != lex->current_select)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "PROCEDURE", "subquery");
7527 7528
	      YYABORT;
	    }
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	    lex->proc_list.elements=0;
	    lex->proc_list.first=0;
	    lex->proc_list.next= (byte**) &lex->proc_list.first;
7532 7533 7534 7535
	    if (add_proc_to_list(lex->thd, new Item_field(&lex->
                                                          current_select->
                                                          context,
                                                          NULL,NULL,$2.str)))
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	      YYABORT;
7537
	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	  }
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	  '(' procedure_list ')';
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procedure_list:
	/* empty */ {}
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	| procedure_list2 {};
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procedure_list2:
	procedure_list2 ',' procedure_item
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	| procedure_item;
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procedure_item:
	  remember_name expr
	  {
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	    LEX *lex= Lex;
	    if (add_proc_to_list(lex->thd, $2))
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	      YYABORT;
	    if (!$2->name)
7557 7558
	      $2->set_name($1,(uint) ((char*) lex->tok_end - $1),
                           YYTHD->charset());
7559 7560 7561 7562 7563 7564
	  }
          ;


select_var_list_init:
	   {
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             LEX *lex=Lex;
	     if (!lex->describe && (!(lex->result= new select_dumpvar())))
7567 7568
	        YYABORT;
	   }
7569
	   select_var_list
7570
	   {}
7571
           ;
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select_var_list:
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	   select_var_list ',' select_var_ident
	   | select_var_ident {}
           ;

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select_var_ident:  
	   '@' ident_or_text
           {
             LEX *lex=Lex;
	     if (lex->result) 
	       ((select_dumpvar *)lex->result)->var_list.push_back( new my_var($2,0,0,(enum_field_types)0));
	     else
	       YYABORT;
	   }
           | ident_or_text
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           {
7589
             LEX *lex=Lex;
7590 7591 7592 7593
	     sp_pvar_t *t;

	     if (!lex->spcont || !(t=lex->spcont->find_pvar(&$1)))
	     {
7594
	       my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
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	       YYABORT;
7596 7597 7598 7599 7600
	     }
	     if (! lex->result)
	       YYABORT;
	     else
	     {
7601 7602 7603
               my_var *var;
	       ((select_dumpvar *)lex->result)->
                 var_list.push_back(var= new my_var($1,1,t->offset,t->type));
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#ifndef DBUG_OFF
7605
	       if (var)
7606
		 var->sp= lex->sphead;
7607
#endif
7608
	     }
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	   }
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           ;
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7612
into:
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        INTO OUTFILE TEXT_STRING_filesystem
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	{
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          LEX *lex= Lex;
7616 7617 7618 7619
          lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
          if (!(lex->exchange= new sql_exchange($3.str, 0)) ||
              !(lex->result= new select_export(lex->exchange)))
            YYABORT;
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	}
	opt_field_term opt_line_term
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	| INTO DUMPFILE TEXT_STRING_filesystem
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	{
7624
	  LEX *lex=Lex;
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	  if (!lex->describe)
	  {
7627
	    lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	    if (!(lex->exchange= new sql_exchange($3.str,1)))
	      YYABORT;
	    if (!(lex->result= new select_dump(lex->exchange)))
	      YYABORT;
	  }
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	}
7634
        | INTO select_var_list_init
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	{
7636
	  Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	}
        ;
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/*
  DO statement
*/
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7644
do:	DO_SYM
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	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DO;
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	  mysql_init_select(lex);
	}
	expr_list
	{
	  Lex->insert_list= $3;
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	}
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	;

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/*
7657
  Drop : delete tables or index or user
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*/

drop:
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	DROP opt_temporary table_or_tables if_exists table_list opt_restrict
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	{
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	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DROP_TABLE;
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	  lex->drop_temporary= $2;
	  lex->drop_if_exists= $4;
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	}
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	| DROP INDEX_SYM ident ON table_ident {}
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	  {
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	     LEX *lex=Lex;
	     lex->sql_command= SQLCOM_DROP_INDEX;
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	     lex->alter_info.drop_list.empty();
	     lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
                                                                $3.str));
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	     if (!lex->current_select->add_table_to_list(lex->thd, $5, NULL,
							TL_OPTION_UPDATING))
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	      YYABORT;
	  }
	| DROP DATABASE if_exists ident
	  {
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	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_DROP_DB;
	    lex->drop_if_exists=$3;
	    lex->name=$4.str;
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	 }
7686
	| DROP FUNCTION_SYM if_exists sp_name
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	  {
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	    LEX *lex=Lex;
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	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
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	      YYABORT;
	    }
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	    lex->sql_command = SQLCOM_DROP_FUNCTION;
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	    lex->drop_if_exists= $3;
	    lex->spname= $4;
	  }
	| DROP PROCEDURE if_exists sp_name
	  {
	    LEX *lex=Lex;
	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
7704 7705 7706 7707 7708
	      YYABORT;
	    }
	    lex->sql_command = SQLCOM_DROP_PROCEDURE;
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
7709
	  }
7710
	| DROP USER clear_privileges user_list
7711
	  {
7712 7713
	    Lex->sql_command = SQLCOM_DROP_USER;
          }
7714 7715
	| DROP VIEW_SYM if_exists table_list opt_restrict
	  {
7716
	    LEX *lex= Lex;
7717 7718 7719
	    lex->sql_command= SQLCOM_DROP_VIEW;
	    lex->drop_if_exists= $3;
	  }
7720 7721 7722 7723 7724 7725
        | DROP EVENT_SYM if_exists sp_name
          {
            LEX *lex=Lex;

            if (lex->et)
            {
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              /*
                Recursive events are not possible because recursive SPs
                are not also possible. lex->sp_head is not stacked.
              */
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              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
              YYABORT;
            }

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            if (!(lex->et= new event_timed()))
              YYABORT;
7736
	  
7737 7738 7739 7740 7741 7742
            if (!lex->et_compile_phase)
            {
              lex->et->init_name(YYTHD, $4);
              lex->et->init_definer(YYTHD);
            }

7743 7744 7745
            lex->sql_command = SQLCOM_DROP_EVENT;
            lex->drop_if_exists= $3;
          }
7746
        | DROP TRIGGER_SYM sp_name
7747 7748 7749
          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_DROP_TRIGGER;
7750
            lex->spname= $3;
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	  }
        | DROP TABLESPACE tablespace_name opt_ts_engine opt_ts_wait
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_cmd_type= DROP_TABLESPACE;
          }
        | DROP LOGFILE_SYM GROUP logfile_group_name opt_ts_engine opt_ts_wait
          {
            LEX *lex= Lex;
            lex->alter_tablespace_info->ts_cmd_type= DROP_LOGFILE_GROUP;
7761 7762
          }
	;
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table_list:
7765
	table_name
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	| table_list ',' table_name;
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7768
table_name:
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	table_ident
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	{
	  if (!Select->add_table_to_list(YYTHD, $1, NULL, TL_OPTION_UPDATING))
	    YYABORT;
	}
	;
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if_exists:
7777
	/* empty */ { $$= 0; }
7778 7779
	| IF EXISTS { $$= 1; }
	;
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opt_temporary:
	/* empty */ { $$= 0; }
	| TEMPORARY { $$= 1; }
	;
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/*
** Insert : add new data to table
*/

insert:
7790 7791 7792
	INSERT
	{
	  LEX *lex= Lex;
7793 7794
	  lex->sql_command= SQLCOM_INSERT;
	  lex->duplicates= DUP_ERROR; 
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	  mysql_init_select(lex);
7796 7797 7798
	  /* for subselects */
          lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
	} insert_lock_option
7799
	opt_ignore insert2
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	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
7804
	insert_field_spec opt_insert_update
7805
	{}
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	;
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replace:
7809 7810
	REPLACE
	{
7811
	  LEX *lex=Lex;
7812 7813
	  lex->sql_command = SQLCOM_REPLACE;
	  lex->duplicates= DUP_REPLACE;
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	  mysql_init_select(lex);
7815
	}
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	replace_lock_option insert2
	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
	insert_field_spec
7822
	{}
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	;
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insert_lock_option:
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	/* empty */	{ $$= TL_WRITE_CONCURRENT_INSERT; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; }
	| DELAYED_SYM	{ $$= TL_WRITE_DELAYED; }
	| HIGH_PRIORITY { $$= TL_WRITE; }
7830
	;
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replace_lock_option:
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	opt_low_priority { $$= $1; }
	| DELAYED_SYM	 { $$= TL_WRITE_DELAYED; };
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insert2:
	INTO insert_table {}
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	| insert_table {};
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insert_table:
7841
	table_name
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	{
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	  LEX *lex=Lex;
	  lex->field_list.empty();
	  lex->many_values.empty();
	  lex->insert_list=0;
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	};
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insert_field_spec:
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	insert_values {}
	| '(' ')' insert_values {}
	| '(' fields ')' insert_values {}
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	| SET
	  {
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	    LEX *lex=Lex;
	    if (!(lex->insert_list = new List_item) ||
		lex->many_values.push_back(lex->insert_list))
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	      YYABORT;
	   }
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	   ident_eq_list;
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fields:
	fields ',' insert_ident { Lex->field_list.push_back($3); }
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	| insert_ident		{ Lex->field_list.push_back($1); };
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insert_values:
	VALUES	values_list  {}
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	| VALUE_SYM values_list  {}
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	|     create_select     { Select->set_braces(0);} union_clause {}
	| '(' create_select ')' { Select->set_braces(1);} union_opt {}
7871
        ;
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values_list:
	values_list ','  no_braces
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	| no_braces;
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ident_eq_list:
	ident_eq_list ',' ident_eq_value
	|
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	ident_eq_value;
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ident_eq_value:
7883
	simple_ident_nospvar equal expr_or_default
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	 {
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	  LEX *lex=Lex;
	  if (lex->field_list.push_back($1) ||
	      lex->insert_list->push_back($3))
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	    YYABORT;
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	 };
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equal:	EQ		{}
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	| SET_VAR	{}
	;

opt_equal:
	/* empty */	{}
	| equal		{}
	;
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no_braces:
	 '('
	 {
	    if (!(Lex->insert_list = new List_item))
	      YYABORT;
	 }
	 opt_values ')'
	 {
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	  LEX *lex=Lex;
	  if (lex->many_values.push_back(lex->insert_list))
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	    YYABORT;
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	 };
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opt_values:
	/* empty */ {}
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	| values;
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values:
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	values ','  expr_or_default
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	{
	  if (Lex->insert_list->push_back($3))
	    YYABORT;
	}
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	| expr_or_default
	  {
	    if (Lex->insert_list->push_back($1))
	      YYABORT;
	  }
	;

expr_or_default:
7931
	expr	  { $$= $1;}
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	| DEFAULT {$$= new Item_default_value(Lex->current_context()); }
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	;
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opt_insert_update:
        /* empty */
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        | ON DUPLICATE_SYM	{ Lex->duplicates= DUP_UPDATE; }
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          KEY_SYM UPDATE_SYM insert_update_list
7939 7940
        ;

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/* Update rows in a table */

update:
7944 7945
	UPDATE_SYM
	{
7946
	  LEX *lex= Lex;
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	  mysql_init_select(lex);
7948
          lex->sql_command= SQLCOM_UPDATE;
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	  lex->lock_option= TL_UNLOCK; 	/* Will be set later */
7950
	  lex->duplicates= DUP_ERROR; 
7951
        }
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        opt_low_priority opt_ignore join_table_list
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7953
	SET update_list
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	{
7955 7956
	  LEX *lex= Lex;
          if (lex->select_lex.table_list.elements > 1)
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            lex->sql_command= SQLCOM_UPDATE_MULTI;
7958 7959 7960
	  else if (lex->select_lex.get_table_list()->derived)
	  {
	    /* it is single table update and it is update of derived table */
7961 7962
	    my_error(ER_NON_UPDATABLE_TABLE, MYF(0),
                     lex->select_lex.get_table_list()->alias, "UPDATE");
7963 7964
	    YYABORT;
	  }
7965 7966 7967 7968 7969 7970
          /*
            In case of multi-update setting write lock for all tables may
            be too pessimistic. We will decrease lock level if possible in
            mysql_multi_update().
          */
          Select->set_lock_for_tables($3);
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	}
7972
	where_clause opt_order_clause delete_limit_clause {}
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	;
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update_list:
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	update_list ',' update_elem
	| update_elem;

update_elem:
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	simple_ident_nospvar equal expr_or_default
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7981
	{
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	  if (add_item_to_list(YYTHD, $1) || add_value_to_list(YYTHD, $3))
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	    YYABORT;
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	};

insert_update_list:
	insert_update_list ',' insert_update_elem
	| insert_update_elem;

insert_update_elem:
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7991
	simple_ident_nospvar equal expr_or_default
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7992
	  {
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	  LEX *lex= Lex;
	  if (lex->update_list.push_back($1) || 
	      lex->value_list.push_back($3))
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7996
	      YYABORT;
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	  };
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opt_low_priority:
8000
	/* empty */	{ $$= YYTHD->update_lock_default; }
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	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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/* Delete rows from a table */

delete:
8006
	DELETE_SYM
8007
	{
8008 8009
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_DELETE;
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8010
	  mysql_init_select(lex);
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8011
	  lex->lock_option= lex->thd->update_lock_default;
8012
	  lex->ignore= 0;
8013
	  lex->select_lex.init_order();
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8014
	}
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	opt_delete_options single_multi {}
	;
8017 8018

single_multi:
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 	FROM table_ident
	{
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	  if (!Select->add_table_to_list(YYTHD, $2, NULL, TL_OPTION_UPDATING,
					 Lex->lock_option))
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	    YYABORT;
	}
	where_clause opt_order_clause
8026
	delete_limit_clause {}
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	| table_wild_list
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	  { mysql_init_multi_delete(Lex); }
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          FROM join_table_list where_clause
8030 8031 8032 8033
          { 
            if (multi_delete_set_locks_and_link_aux_tables(Lex))
              YYABORT;
          }
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	| FROM table_wild_list
	  { mysql_init_multi_delete(Lex); }
8036
	  USING join_table_list where_clause
8037 8038 8039 8040
          { 
            if (multi_delete_set_locks_and_link_aux_tables(Lex))
              YYABORT;
          }
8041
	;
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table_wild_list:
	  table_wild_one {}
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	  | table_wild_list ',' table_wild_one {};
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table_wild_one:
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	ident opt_wild opt_table_alias
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8049
	{
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	  if (!Select->add_table_to_list(YYTHD, new Table_ident($1), $3,
					 TL_OPTION_UPDATING, Lex->lock_option))
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	    YYABORT;
        }
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8054
	| ident '.' ident opt_wild opt_table_alias
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8055
	  {
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	    if (!Select->add_table_to_list(YYTHD,
					   new Table_ident(YYTHD, $1, $3, 0),
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					   $5, TL_OPTION_UPDATING,
					   Lex->lock_option))
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	      YYABORT;
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	  }
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	;
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opt_wild:
8065
	/* empty */	{}
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	| '.' '*'	{};
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8069
opt_delete_options:
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	/* empty */	{}
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	| opt_delete_option opt_delete_options {};
8072 8073

opt_delete_option:
8074
	QUICK		{ Select->options|= OPTION_QUICK; }
8075
	| LOW_PRIORITY	{ Lex->lock_option= TL_WRITE_LOW_PRIORITY; }
8076
	| IGNORE_SYM	{ Lex->ignore= 1; };
8077

8078
truncate:
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	TRUNCATE_SYM opt_table_sym table_name
8080
	{
8081
	  LEX* lex= Lex;
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	  lex->sql_command= SQLCOM_TRUNCATE;
8083
	  lex->select_lex.options= 0;
8084
	  lex->select_lex.init_order();
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	}
	;
8087

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opt_table_sym:
	/* empty */
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	| TABLE_SYM;
8091

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/* Show things */

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show:	SHOW
	{
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	  LEX *lex=Lex;
	  lex->wild=0;
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          lex->lock_option= TL_READ;
          mysql_init_select(lex);
          lex->current_select->parsing_place= SELECT_LIST;
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	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	}
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	show_param
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	{}
	;
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show_param:
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         DATABASES wild_and_where
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         {
           LEX *lex= Lex;
           lex->sql_command= SQLCOM_SELECT;
           lex->orig_sql_command= SQLCOM_SHOW_DATABASES;
           if (prepare_schema_table(YYTHD, lex, 0, SCH_SCHEMATA))
             YYABORT;
         }
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         | opt_full TABLES opt_db wild_and_where
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           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLES;
8121
             lex->select_lex.db= $3;
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             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLE_NAMES))
               YYABORT;
           }
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         | opt_full TRIGGERS_SYM opt_db wild_and_where
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TRIGGERS;
             lex->select_lex.db= $3;
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TRIGGERS))
               YYABORT;
           }
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         | opt_full EVENTS_SYM opt_db wild_and_where
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_EVENTS;
             lex->select_lex.db= $3;
             if (prepare_schema_table(YYTHD, lex, 0, SCH_EVENTS))
               YYABORT;
           }
8143
         | TABLE_SYM STATUS_SYM opt_db wild_and_where
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           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLE_STATUS;
8148
             lex->select_lex.db= $3;
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             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLES))
               YYABORT;
           }
8152
        | OPEN_SYM TABLES opt_db wild_and_where
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	  {
8154
	    LEX *lex= Lex;
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            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_OPEN_TABLES;
8157
	    lex->select_lex.db= $3;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_OPEN_TABLES))
              YYABORT;
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	  }
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        | PLUGIN_SYM
	  {
	    LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_PLUGINS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_PLUGINS))
              YYABORT;
	  }
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	| ENGINE_SYM storage_engines 
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	  { Lex->create_info.db_type= $2; }
	  show_engine_param
8172
	| ENGINE_SYM ALL 
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	  { Lex->create_info.db_type= NULL; }
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	  show_engine_param
8175
	| opt_full COLUMNS from_or_in table_ident opt_db wild_and_where
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	  {
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 	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SELECT;
	    lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
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	    if ($5)
	      $4->change_db($5);
	    if (prepare_schema_table(YYTHD, lex, $4, SCH_COLUMNS))
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	      YYABORT;
	  }
8185
        | NEW_SYM MASTER_SYM FOR_SYM SLAVE WITH MASTER_LOG_FILE_SYM EQ
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	  TEXT_STRING_sys AND_SYM MASTER_LOG_POS_SYM EQ ulonglong_num
	  AND_SYM MASTER_SERVER_ID_SYM EQ
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	ulong_num
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          {
	    Lex->sql_command = SQLCOM_SHOW_NEW_MASTER;
	    Lex->mi.log_file_name = $8.str;
	    Lex->mi.pos = $12;
8193
	    Lex->mi.server_id = $16;
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          }
8195
        | master_or_binary LOGS_SYM
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          {
	    Lex->sql_command = SQLCOM_SHOW_BINLOGS;
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          }
        | SLAVE HOSTS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_HOSTS;
          }
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        | BINLOG_SYM EVENTS_SYM binlog_in binlog_from
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          {
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	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_BINLOG_EVENTS;
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          } opt_limit_clause_init
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        | keys_or_index from_or_in table_ident opt_db where_clause
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_KEYS;
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	    if ($4)
	      $3->change_db($4);
            if (prepare_schema_table(YYTHD, lex, $3, SCH_STATISTICS))
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              YYABORT;
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	  }
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	| COLUMN_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_COLUMN_TYPES;
	  }
	| TABLE_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
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	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
	    WARN_DEPRECATED("SHOW TABLE TYPES", "SHOW [STORAGE] ENGINES");
	  }
	| opt_storage ENGINES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
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            lex->orig_sql_command= SQLCOM_SHOW_AUTHORS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_ENGINES))
              YYABORT;
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	  }
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	| AUTHORS_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_AUTHORS;
	  }
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	| PRIVILEGES
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_PRIVILEGES;
	  }
8247
        | COUNT_SYM '(' '*' ')' WARNINGS
8248
          { (void) create_select_for_variable("warning_count"); }
8249
        | COUNT_SYM '(' '*' ')' ERRORS
8250
	  { (void) create_select_for_variable("error_count"); }
8251
        | WARNINGS opt_limit_clause_init
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          { Lex->sql_command = SQLCOM_SHOW_WARNS;}
8253
        | ERRORS opt_limit_clause_init
8254
          { Lex->sql_command = SQLCOM_SHOW_ERRORS;}
8255
        | opt_var_type STATUS_SYM wild_and_where
8256
          {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS;
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            lex->option_type= $1;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_STATUS))
              YYABORT;
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	  }	
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        | INNOBASE_SYM STATUS_SYM
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          {
            LEX *lex= Lex;
            lex->sql_command = SQLCOM_SHOW_ENGINE_STATUS;
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            if (!(lex->create_info.db_type=
                  ha_resolve_by_legacy_type(YYTHD, DB_TYPE_INNODB)))
            {
	      my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), "InnoDB");
	      YYABORT;
            }
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            WARN_DEPRECATED("SHOW INNODB STATUS", "SHOW ENGINE INNODB STATUS");
	  }
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        | MUTEX_SYM STATUS_SYM
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          {
	    LEX *lex= Lex;
            lex->sql_command = SQLCOM_SHOW_ENGINE_MUTEX; 
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            if (!(lex->create_info.db_type=
                  ha_resolve_by_legacy_type(YYTHD, DB_TYPE_INNODB)))
            {
	      my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), "InnoDB");
	      YYABORT;
            }
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            WARN_DEPRECATED("SHOW MUTEX STATUS", "SHOW ENGINE INNODB MUTEX");
	  }
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	| opt_full PROCESSLIST_SYM
	  { Lex->sql_command= SQLCOM_SHOW_PROCESSLIST;}
8290
        | opt_var_type  VARIABLES wild_and_where
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	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_VARIABLES;
8295
            lex->option_type= $1;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_VARIABLES))
              YYABORT;
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	  }
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        | charset wild_and_where
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_CHARSETS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_CHARSETS))
              YYABORT;
          }
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        | COLLATION_SYM wild_and_where
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_COLLATIONS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_COLLATIONS))
              YYABORT;
          }
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	| BERKELEY_DB_SYM LOGS_SYM
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	  {
	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_ENGINE_LOGS;
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            if (!(lex->create_info.db_type=
                  ha_resolve_by_legacy_type(YYTHD, DB_TYPE_BERKELEY_DB)))
            {
	      my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), "BerkeleyDB");
	      YYABORT;
            }
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	    WARN_DEPRECATED("SHOW BDB LOGS", "SHOW ENGINE BDB LOGS");
	  }
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	| LOGS_SYM
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	  {
	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_ENGINE_LOGS;
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            if (!(lex->create_info.db_type=
                  ha_resolve_by_legacy_type(YYTHD, DB_TYPE_BERKELEY_DB)))
            {
	      my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), "BerkeleyDB");
	      YYABORT;
            }
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	    WARN_DEPRECATED("SHOW LOGS", "SHOW ENGINE BDB LOGS");
	  }
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	| GRANTS
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    THD *thd= lex->thd;
8344
            Security_context *sctx= thd->security_ctx;
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	    LEX_USER *curr_user;
            if (!(curr_user= (LEX_USER*) thd->alloc(sizeof(st_lex_user))))
              YYABORT;
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            curr_user->user.str= sctx->priv_user;
            curr_user->user.length= strlen(sctx->priv_user);
            if (*sctx->priv_host != 0)
8351
            {
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              curr_user->host.str= sctx->priv_host;
              curr_user->host.length= strlen(sctx->priv_host);
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            }
            else
            {
              curr_user->host.str= (char *) "%";
              curr_user->host.length= 1;
            }
8360
            curr_user->password=null_lex_str;
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	    lex->grant_user= curr_user;
	  }
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	| GRANTS FOR_SYM user
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	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    lex->grant_user=$3;
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	    lex->grant_user->password=null_lex_str;
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	  }
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	| CREATE DATABASE opt_if_not_exists ident
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	  {
	    Lex->sql_command=SQLCOM_SHOW_CREATE_DB;
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	    Lex->create_info.options=$3;
	    Lex->name=$4.str;
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	  }
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        | CREATE TABLE_SYM table_ident
          {
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            LEX *lex= Lex;
	    lex->sql_command = SQLCOM_SHOW_CREATE;
	    if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL,0))
	      YYABORT;
            lex->only_view= 0;
	  }
        | CREATE VIEW_SYM table_ident
          {
            LEX *lex= Lex;
	    lex->sql_command = SQLCOM_SHOW_CREATE;
	    if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL, 0))
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	      YYABORT;
8390
            lex->only_view= 1;
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	  }
        | MASTER_SYM STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_MASTER_STAT;
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          }
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        | SLAVE STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_STAT;
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          }
	| CREATE PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

	    lex->sql_command = SQLCOM_SHOW_CREATE_PROC;
	    lex->spname= $3;
	  }
	| CREATE FUNCTION_SYM sp_name
	  {
	    LEX *lex= Lex;

	    lex->sql_command = SQLCOM_SHOW_CREATE_FUNC;
	    lex->spname= $3;
	  }
8414
	| PROCEDURE STATUS_SYM wild_and_where
8415
	  {
8416 8417 8418
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_PROC;
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	    if (!sp_add_to_query_tables(YYTHD, lex, "mysql", "proc", TL_READ))
	      YYABORT;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
              YYABORT;
8423
	  }
8424
	| FUNCTION_SYM STATUS_SYM wild_and_where
8425
	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_FUNC;
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	    if (!sp_add_to_query_tables(YYTHD, lex, "mysql", "proc", TL_READ))
	      YYABORT;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
              YYABORT;
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	  }
        | PROCEDURE CODE_SYM sp_name
          {
#ifdef DBUG_OFF
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
#else
            Lex->sql_command= SQLCOM_SHOW_PROC_CODE;
	    Lex->spname= $3;
#endif
          }
        | FUNCTION_SYM CODE_SYM sp_name
          {
#ifdef DBUG_OFF
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
#else
            Lex->sql_command= SQLCOM_SHOW_FUNC_CODE;
	    Lex->spname= $3;
#endif
          }
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        | CREATE EVENT_SYM sp_name
          {
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            Lex->sql_command = SQLCOM_SHOW_CREATE_EVENT;
            Lex->spname= $3;
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            Lex->et= new event_timed();
            if (!Lex->et)
              YYABORT;
            Lex->et->init_definer(YYTHD);
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          }
      ;
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show_engine_param:
	STATUS_SYM
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	  { Lex->sql_command= SQLCOM_SHOW_ENGINE_STATUS; }
	| MUTEX_SYM
	  { Lex->sql_command= SQLCOM_SHOW_ENGINE_MUTEX; }
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	| LOGS_SYM
8471
	  { Lex->sql_command= SQLCOM_SHOW_ENGINE_LOGS; };
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master_or_binary:
	MASTER_SYM
	| BINARY;

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opt_storage:
	/* empty */
	| STORAGE_SYM;

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opt_db:
	/* empty */  { $$= 0; }
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	| from_or_in ident { $$= $2.str; };
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opt_full:
	/* empty */ { Lex->verbose=0; }
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	| FULL	    { Lex->verbose=1; };
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from_or_in:
	FROM
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	| IN_SYM;
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binlog_in:
	/* empty */ { Lex->mi.log_file_name = 0; }
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        | IN_SYM TEXT_STRING_sys { Lex->mi.log_file_name = $2.str; };
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binlog_from:
	/* empty */ { Lex->mi.pos = 4; /* skip magic number */ }
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        | FROM ulonglong_num { Lex->mi.pos = $2; };
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wild_and_where:
      /* empty */
      | LIKE TEXT_STRING_sys
	{ Lex->wild=  new (YYTHD->mem_root) String($2.str, $2.length,
                                                   system_charset_info); }
      | WHERE expr
        {
          Select->where= $2;
          if ($2)
            $2->top_level_item();
        }
      ;

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/* A Oracle compatible synonym for show */
describe:
	describe_command table_ident
	{
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          LEX *lex= Lex;
          lex->lock_option= TL_READ;
          mysql_init_select(lex);
          lex->current_select->parsing_place= SELECT_LIST;
          lex->sql_command= SQLCOM_SELECT;
          lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
          lex->select_lex.db= 0;
          lex->verbose= 0;
          if (prepare_schema_table(YYTHD, lex, $2, SCH_COLUMNS))
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	    YYABORT;
	}
8530
	opt_describe_column {}
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	| describe_command opt_extended_describe
	  { Lex->describe|= DESCRIBE_NORMAL; }
	  select
8534
          {
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	    LEX *lex=Lex;
8536
	    lex->select_lex.options|= SELECT_DESCRIBE;
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	  }
	;
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describe_command:
	DESC
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	| DESCRIBE;
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opt_extended_describe:
	/* empty */ {}
	| EXTENDED_SYM { Lex->describe|= DESCRIBE_EXTENDED; }
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	| PARTITIONS_SYM { Lex->describe|= DESCRIBE_PARTITIONS; }
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	;

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opt_describe_column:
	/* empty */	{}
	| text_string	{ Lex->wild= $1; }
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	| ident
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	  { Lex->wild= new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info); };
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/* flush things */

flush:
8561
	FLUSH_SYM opt_no_write_to_binlog
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	{
	  LEX *lex=Lex;
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	  if (lex->sphead && lex->sphead->m_type != TYPE_ENUM_PROCEDURE)
8565
	  {
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            /*
              Note that both FLUSH TABLES and FLUSH PRIVILEGES will break
              execution in prelocked mode. So it is better to disable
              FLUSH in stored functions and triggers completely.
            */
            my_error(ER_STMT_NOT_ALLOWED_IN_SF_OR_TRG, MYF(0), "FLUSH");
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	    YYABORT;
	  }
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	  lex->sql_command= SQLCOM_FLUSH; lex->type=0;
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          lex->no_write_to_binlog= $2;
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	}
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	flush_options
	{}
	;
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flush_options:
	flush_options ',' flush_option
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	| flush_option;
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flush_option:
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	table_or_tables	{ Lex->type|= REFRESH_TABLES; } opt_table_list {}
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	| TABLES WITH READ_SYM LOCK_SYM { Lex->type|= REFRESH_TABLES | REFRESH_READ_LOCK; }
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	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE_FREE; }
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	| HOSTS_SYM	{ Lex->type|= REFRESH_HOSTS; }
	| PRIVILEGES	{ Lex->type|= REFRESH_GRANT; }
	| LOGS_SYM	{ Lex->type|= REFRESH_LOG; }
	| STATUS_SYM	{ Lex->type|= REFRESH_STATUS; }
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        | SLAVE         { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM    { Lex->type|= REFRESH_MASTER; }
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	| DES_KEY_FILE	{ Lex->type|= REFRESH_DES_KEY_FILE; }
 	| RESOURCES     { Lex->type|= REFRESH_USER_RESOURCES; };
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opt_table_list:
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	/* empty */  {;}
	| table_list {;};
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reset:
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	RESET_SYM
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RESET; lex->type=0;
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	} reset_options
	{}
	;

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reset_options:
	reset_options ',' reset_option
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	| reset_option;
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reset_option:
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        SLAVE                 { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM          { Lex->type|= REFRESH_MASTER; }
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	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE;};
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purge:
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	PURGE
	{
	  LEX *lex=Lex;
	  lex->type=0;
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	} purge_options
	{}
	;

purge_options:
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	master_or_binary LOGS_SYM purge_option
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	;
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purge_option:
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        TO_SYM TEXT_STRING_sys
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        {
	   Lex->sql_command = SQLCOM_PURGE;
	   Lex->to_log = $2.str;
        }
	| BEFORE_SYM expr
	{
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	  LEX *lex= Lex;
	  lex->value_list.empty();
	  lex->value_list.push_front($2);
	  lex->sql_command= SQLCOM_PURGE_BEFORE;
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	}
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	;
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/* kill threads */

kill:
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	KILL_SYM kill_option expr
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	{
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	  LEX *lex=Lex;
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	  lex->value_list.empty();
	  lex->value_list.push_front($3);
          lex->sql_command= SQLCOM_KILL;
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	};
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kill_option:
	/* empty */	 { Lex->type= 0; }
	| CONNECTION_SYM { Lex->type= 0; }
	| QUERY_SYM      { Lex->type= ONLY_KILL_QUERY; };

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/* change database */

use:	USE_SYM ident
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	{
	  LEX *lex=Lex;
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	  lex->sql_command=SQLCOM_CHANGE_DB;
	  lex->select_lex.db= $2.str;
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	};
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/* import, export of files */

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load:   LOAD DATA_SYM 
        {
          LEX *lex=Lex;
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	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOAD DATA");
	    YYABORT;
	  }
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          lex->fname_start= lex->ptr;
        }
        load_data
        {}
        |
        LOAD TABLE_SYM table_ident FROM MASTER_SYM
        {
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	  LEX *lex=Lex;
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          push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN,
                              ER_WARN_DEPRECATED_STATEMENT,
                              ER(ER_WARN_DEPRECATED_STATEMENT),
                              "LOAD TABLE FROM MASTER", "5.2",
                              "mysqldump, mysql, MySQL Administrator");
8696
          if (lex->sphead)
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	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOAD TABLE");
	    YYABORT;
	  }
          lex->sql_command = SQLCOM_LOAD_MASTER_TABLE;
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          if (!Select->add_table_to_list(YYTHD, $3, NULL, TL_OPTION_UPDATING))
            YYABORT;
        };

load_data:
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	load_data_lock opt_local INFILE TEXT_STRING_filesystem
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	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_LOAD;
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	  lex->lock_option= $1;
	  lex->local_file=  $2;
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	  lex->duplicates= DUP_ERROR;
	  lex->ignore= 0;
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	  if (!(lex->exchange= new sql_exchange($4.str, 0)))
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	    YYABORT;
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        }
        opt_duplicate INTO
        {
	  LEX *lex=Lex;
	  lex->fname_end= lex->ptr;
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	}
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        TABLE_SYM table_ident
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        {
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          LEX *lex=Lex;
          if (!Select->add_table_to_list(YYTHD, $10, NULL, TL_OPTION_UPDATING,
                                         lex->lock_option))
            YYABORT;
          lex->field_list.empty();
          lex->update_list.empty();
          lex->value_list.empty();
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        }
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        opt_field_term opt_line_term opt_ignore_lines opt_field_or_var_spec
        opt_load_data_set_spec
        {}
8736
        |
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	FROM MASTER_SYM
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        {
	  Lex->sql_command = SQLCOM_LOAD_MASTER_DATA;
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        };
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opt_local:
	/* empty */	{ $$=0;}
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	| LOCAL_SYM	{ $$=1;};
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load_data_lock:
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	/* empty */	{ $$= YYTHD->update_lock_default; }
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	| CONCURRENT	{ $$= TL_WRITE_CONCURRENT_INSERT ; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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opt_duplicate:
	/* empty */	{ Lex->duplicates=DUP_ERROR; }
	| REPLACE	{ Lex->duplicates=DUP_REPLACE; }
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	| IGNORE_SYM	{ Lex->ignore= 1; };
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opt_field_term:
	/* empty */
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	| COLUMNS field_term_list;
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field_term_list:
	field_term_list field_term
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	| field_term;
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field_term:
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	TERMINATED BY text_string 
          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->field_term= $3;
          }
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	| OPTIONALLY ENCLOSED BY text_string
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	  {
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            LEX *lex= Lex;
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            DBUG_ASSERT(lex->exchange != 0);
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            lex->exchange->enclosed= $4;
            lex->exchange->opt_enclosed= 1;
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	  }
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        | ENCLOSED BY text_string
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          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->enclosed= $3;
          }
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        | ESCAPED BY text_string
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          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->escaped= $3;
          };
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opt_line_term:
	/* empty */
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	| LINES line_term_list;
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line_term_list:
	line_term_list line_term
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	| line_term;
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line_term:
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        TERMINATED BY text_string
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          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->line_term= $3;
          }
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        | STARTING BY text_string
8804
          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->line_start= $3;
          };
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opt_ignore_lines:
	/* empty */
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        | IGNORE_SYM NUM LINES
          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->skip_lines= atol($2.str);
          };
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opt_field_or_var_spec:
	/* empty */	          { }
	| '(' fields_or_vars ')'  { }
	| '(' ')'	          { };

fields_or_vars:
        fields_or_vars ',' field_or_var
          { Lex->field_list.push_back($3); }
        | field_or_var
          { Lex->field_list.push_back($1); }
        ;
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field_or_var:
        simple_ident_nospvar {$$= $1;}
        | '@' ident_or_text
          { $$= new Item_user_var_as_out_param($2); }
        ;

opt_load_data_set_spec:
        /* empty */           { }
        | SET insert_update_list  { };


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/* Common definitions */

text_literal:
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	TEXT_STRING_literal
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	{
	  THD *thd= YYTHD;
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	  $$ = new Item_string($1.str,$1.length,thd->variables.collation_connection);
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	}
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	| NCHAR_STRING
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	{ $$=  new Item_string($1.str,$1.length,national_charset_info); }
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	| UNDERSCORE_CHARSET TEXT_STRING
8851
	  { $$ = new Item_string($2.str,$2.length,Lex->charset); }
8852
	| text_literal TEXT_STRING_literal
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	  { ((Item_string*) $1)->append($2.str,$2.length); }
	;
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text_string:
8857
	TEXT_STRING_literal
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	{ $$=  new (YYTHD->mem_root) String($1.str,$1.length,YYTHD->variables.collation_connection); }
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	| HEX_NUM
	  {
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	    Item *tmp= new Item_hex_string($1.str, $1.length);
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	    /*
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	      it is OK only emulate fix_fields, because we need only
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              value of constant
	    */
	    $$= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
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	      (String*) 0;
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	  }
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        | BIN_NUM
          {
	    Item *tmp= new Item_bin_string($1.str, $1.length);
	    /*
	      it is OK only emulate fix_fields, because we need only
              value of constant
	    */
	    $$= tmp ? tmp->quick_fix_field(), tmp->val_str((String*) 0) :
		      (String*) 0;
          }
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	;

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param_marker:
8883
        PARAM_MARKER
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        {
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          THD *thd=YYTHD;
	  LEX *lex= thd->lex;
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          Item_param *item= new Item_param((uint) (lex->tok_start -
                                                   (uchar *) thd->query));
          if (!($$= item) || lex->param_list.push_back(item))
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          {
8891
            my_message(ER_OUT_OF_RESOURCES, ER(ER_OUT_OF_RESOURCES), MYF(0));
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            YYABORT;
          }
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        }
	;

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signed_literal:
	literal		{ $$ = $1; }
	| '+' NUM_literal { $$ = $2; }
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	| '-' NUM_literal
	  {
8902
	    $2->max_length++;
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	    $$= $2->neg();
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	  }
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	;


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literal:
	text_literal	{ $$ =	$1; }
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	| NUM_literal	{ $$ = $1; }
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	| NULL_SYM	{ $$ =	new Item_null();
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			  Lex->next_state=MY_LEX_OPERATOR_OR_IDENT;}
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	| FALSE_SYM	{ $$= new Item_int((char*) "FALSE",0,1); }
	| TRUE_SYM	{ $$= new Item_int((char*) "TRUE",1,1); }
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	| HEX_NUM	{ $$ =	new Item_hex_string($1.str, $1.length);}
	| BIN_NUM	{ $$= new Item_bin_string($1.str, $1.length); }
8917
	| UNDERSCORE_CHARSET HEX_NUM
8918
	  {
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	    Item *tmp= new Item_hex_string($2.str, $2.length);
8920
	    /*
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	      it is OK only emulate fix_fieds, because we need only
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              value of constant
	    */
	    String *str= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
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	      (String*) 0;
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	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
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	  }
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	| UNDERSCORE_CHARSET BIN_NUM
          {
	    Item *tmp= new Item_bin_string($2.str, $2.length);
	    /*
	      it is OK only emulate fix_fieds, because we need only
              value of constant
	    */
	    String *str= tmp ?
	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
	      (String*) 0;
	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
          }
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	| DATE_SYM text_literal { $$ = $2; }
	| TIME_SYM text_literal { $$ = $2; }
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	| TIMESTAMP text_literal { $$ = $2; };
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8949
NUM_literal:
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	NUM		{ int error; $$ = new Item_int($1.str, (longlong) my_strtoll10($1.str, NULL, &error), $1.length); }
	| LONG_NUM	{ int error; $$ = new Item_int($1.str, (longlong) my_strtoll10($1.str, NULL, &error), $1.length); }
8952
	| ULONGLONG_NUM	{ $$ =	new Item_uint($1.str, $1.length); }
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        | DECIMAL_NUM
8954
	{
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           $$= new Item_decimal($1.str, $1.length, YYTHD->charset());
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	   if (YYTHD->net.report_error)
	   {
	     YYABORT;
	   }
	}
	| FLOAT_NUM
	{
	   $$ =	new Item_float($1.str, $1.length);
	   if (YYTHD->net.report_error)
	   {
	     YYABORT;
	   }
	}
8969
	;
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/**********************************************************************
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** Creating different items.
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**********************************************************************/

insert_ident:
8976
	simple_ident_nospvar { $$=$1; }
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	| table_wild	 { $$=$1; };
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table_wild:
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	ident '.' '*'
8981
	{
8982
          SELECT_LEX *sel= Select;
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	  $$ = new Item_field(Lex->current_context(), NullS, $1.str, "*");
8984
	  sel->with_wild++;
8985
	}
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	| ident '.' ident '.' '*'
8987
	{
8988
          SELECT_LEX *sel= Select;
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	  $$ = new Item_field(Lex->current_context(), (YYTHD->client_capabilities &
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                             CLIENT_NO_SCHEMA ? NullS : $1.str),
                             $3.str,"*");
8992
	  sel->with_wild++;
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	}
	;
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order_ident:
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	expr { $$=$1; };
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simple_ident:
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	ident
	{
	  sp_pvar_t *spv;
	  LEX *lex = Lex;
          sp_pcontext *spc = lex->spcont;
	  if (spc && (spv = spc->find_pvar(&$1)))
9006 9007 9008
	  {
            /* We're compiling a stored procedure and found a variable */
            Item_splocal *splocal;
9009 9010
            splocal= new Item_splocal($1, spv->offset, spv->type,
                                      lex->tok_start_prev - 
9011
                                      lex->sphead->m_tmp_query);
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#ifndef DBUG_OFF
9013
            if (splocal)
9014
              splocal->m_sp= lex->sphead;
9015
#endif
9016
	    $$ = (Item*) splocal;
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            lex->variables_used= 1;
	    lex->safe_to_cache_query=0;
	  }
	  else
	  {
	    SELECT_LEX *sel=Select;
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
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                 (Item*) new Item_field(Lex->current_context(), NullS, NullS, $1.str) :
	         (Item*) new Item_ref(Lex->current_context(), NullS, NullS, $1.str);
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	  }
        }
        | simple_ident_q { $$= $1; }
	;

simple_ident_nospvar:
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	ident
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	{
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	  SELECT_LEX *sel=Select;
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	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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              (Item*) new Item_field(Lex->current_context(), NullS, NullS, $1.str) :
	      (Item*) new Item_ref(Lex->current_context(), NullS, NullS, $1.str);
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	}
9041
	| simple_ident_q { $$= $1; }
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	;
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simple_ident_q:
	ident '.' ident
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	{
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	  THD *thd= YYTHD;
9048
	  LEX *lex= thd->lex;
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          /*
            FIXME This will work ok in simple_ident_nospvar case because
            we can't meet simple_ident_nospvar in trigger now. But it
            should be changed in future.
          */
          if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
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              (!my_strcasecmp(system_charset_info, $1.str, "NEW") ||
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               !my_strcasecmp(system_charset_info, $1.str, "OLD")))
          {
9059
            Item_trigger_field *trg_fld;
9060
            bool new_row= ($1.str[0]=='N' || $1.str[0]=='n');
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            if (lex->trg_chistics.event == TRG_EVENT_INSERT &&
                !new_row)
            {
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              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "OLD", "on INSERT");
9066 9067
              YYABORT;
            }
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            if (lex->trg_chistics.event == TRG_EVENT_DELETE &&
                new_row)
            {
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              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "NEW", "on DELETE");
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              YYABORT;
            }
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            if (!(trg_fld= new Item_trigger_field(Lex->current_context(),
9077
                                                  new_row ?
9078 9079
                                                  Item_trigger_field::NEW_ROW:
                                                  Item_trigger_field::OLD_ROW,
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9080 9081
                                                  $3.str,
                                                  Item_trigger_field::AT_READ)))
9082
              YYABORT;
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9083

9084 9085 9086 9087 9088 9089
            /*
              Let us add this item to list of all Item_trigger_field objects
              in trigger.
            */
            lex->trg_table_fields.link_in_list((byte *)trg_fld,
              (byte**)&trg_fld->next_trg_field);
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9091 9092 9093 9094 9095 9096 9097
            $$= (Item *)trg_fld;
          }
          else
          {
	    SELECT_LEX *sel= lex->current_select;
	    if (sel->no_table_names_allowed)
	    {
9098 9099
	      my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                       MYF(0), $1.str, thd->where);
9100 9101 9102
	    }
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
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	        (Item*) new Item_field(Lex->current_context(), NullS, $1.str, $3.str) :
	        (Item*) new Item_ref(Lex->current_context(), NullS, $1.str, $3.str);
9105 9106
          }
        }
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	| '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
9110
	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
9114 9115
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $2.str, thd->where);
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	  }
9117
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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	      (Item*) new Item_field(Lex->current_context(), NullS, $2.str, $4.str) :
              (Item*) new Item_ref(Lex->current_context(), NullS, $2.str, $4.str);
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	}
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	| ident '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
9125
	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
9129 9130
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $3.str, thd->where);
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	  }
9132
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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	      (Item*) new Item_field(Lex->current_context(),
9135
                                     (YYTHD->client_capabilities &
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9136 9137
				      CLIENT_NO_SCHEMA ? NullS : $1.str),
				     $3.str, $5.str) :
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	      (Item*) new Item_ref(Lex->current_context(),
9139
                                   (YYTHD->client_capabilities &
9140
				    CLIENT_NO_SCHEMA ? NullS : $1.str),
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                                   $3.str, $5.str);
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9142
	};
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field_ident:
	ident			{ $$=$1;}
9147 9148 9149 9150 9151
	| ident '.' ident '.' ident
          {
            TABLE_LIST *table= (TABLE_LIST*) Select->table_list.first;
            if (my_strcasecmp(table_alias_charset, $1.str, table->db))
            {
9152
              my_error(ER_WRONG_DB_NAME, MYF(0), $1.str);
9153 9154
              YYABORT;
            }
9155 9156
            if (my_strcasecmp(table_alias_charset, $3.str,
                              table->table_name))
9157
            {
9158
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3.str);
9159 9160 9161 9162 9163 9164 9165 9166 9167
              YYABORT;
            }
            $$=$5;
          }
	| ident '.' ident
          {
            TABLE_LIST *table= (TABLE_LIST*) Select->table_list.first;
            if (my_strcasecmp(table_alias_charset, $1.str, table->alias))
            {
9168
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $1.str);
9169 9170 9171 9172
              YYABORT;
            }
            $$=$3;
          }
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	| '.' ident		{ $$=$2;}	/* For Delphi */;
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table_ident:
	ident			{ $$=new Table_ident($1); }
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	| ident '.' ident	{ $$=new Table_ident(YYTHD, $1,$3,0);}
9178 9179 9180
	| '.' ident		{ $$=new Table_ident($2);} /* For Delphi */
        ;

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table_ident_nodb:
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	ident			{ LEX_STRING db={(char*) any_db,3}; $$=new Table_ident(YYTHD, db,$1,0); }
9183
        ;
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9184

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IDENT_sys:
9186 9187 9188 9189 9190
	IDENT { $$= $1; }
	| IDENT_QUOTED
	  {
	    THD *thd= YYTHD;
	    if (thd->charset_is_system_charset)
9191 9192
            {
              CHARSET_INFO *cs= system_charset_info;
9193
              int dummy_error;
9194 9195
              uint wlen= cs->cset->well_formed_len(cs, $1.str,
                                                   $1.str+$1.length,
9196
                                                   $1.length, &dummy_error);
9197 9198
              if (wlen < $1.length)
              {
9199 9200
                my_error(ER_INVALID_CHARACTER_STRING, MYF(0),
                         cs->csname, $1.str + wlen);
9201 9202
                YYABORT;
              }
9203
	      $$= $1;
9204
            }
9205 9206 9207 9208
	    else
	      thd->convert_string(&$$, system_charset_info,
				  $1.str, $1.length, thd->charset());
	  }
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	;

TEXT_STRING_sys:
	TEXT_STRING
	{
	  THD *thd= YYTHD;
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	  if (thd->charset_is_system_charset)
	    $$= $1;
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	  else
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	    thd->convert_string(&$$, system_charset_info,
				$1.str, $1.length, thd->charset());
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	}
	;

9223
TEXT_STRING_literal:
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	TEXT_STRING
	{
	  THD *thd= YYTHD;
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	  if (thd->charset_is_collation_connection)
	    $$= $1;
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	  else
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	    thd->convert_string(&$$, thd->variables.collation_connection,
				$1.str, $1.length, thd->charset());
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	}
	;


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TEXT_STRING_filesystem:
	TEXT_STRING
	{
	  THD *thd= YYTHD;
	  if (thd->charset_is_character_set_filesystem)
	    $$= $1;
	  else
	    thd->convert_string(&$$, thd->variables.character_set_filesystem,
				$1.str, $1.length, thd->charset());
	}
	;

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ident:
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9249
	IDENT_sys	    { $$=$1; }
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	| READ_ONLY_SYM
	{
	  THD *thd= YYTHD;
	  $$.str= thd->strmake("read_only",9);
	  $$.length= 9;
	}
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	| keyword
	{
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	  THD *thd= YYTHD;
	  $$.str=    thd->strmake($1.str, $1.length);
	  $$.length= $1.length;
9261 9262
	}
	;
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9263

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label_ident:
	IDENT_sys	    { $$=$1; }
	| keyword_sp
	{
	  THD *thd= YYTHD;
	  $$.str=    thd->strmake($1.str, $1.length);
	  $$.length= $1.length;
	}
	;

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ident_or_text:
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9275
        ident                   { $$=$1;}
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	| TEXT_STRING_sys	{ $$=$1;}
	| LEX_HOSTNAME		{ $$=$1;};
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user:
	ident_or_text
	{
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	  THD *thd= YYTHD;
	  if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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9284
	    YYABORT;
9285 9286 9287 9288
	  $$->user = $1;
	  $$->host.str= (char *) "%";
	  $$->host.length= 1;
	}
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9289 9290
	| ident_or_text '@' ident_or_text
	  {
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9291 9292
	    THD *thd= YYTHD;
	    if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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9293 9294
	      YYABORT;
	    $$->user = $1; $$->host=$3;
9295
	  }
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9296
	| CURRENT_USER optional_braces
9297 9298
	{
          THD *thd= YYTHD;
9299
          Security_context *sctx= thd->security_ctx;
9300 9301
          if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
            YYABORT;
9302 9303 9304
          $$->user.str= sctx->priv_user;
          $$->user.length= strlen(sctx->priv_user);
          if (*sctx->priv_host != 0)
9305
          {
9306 9307
            $$->host.str= sctx->priv_host;
            $$->host.length= strlen(sctx->priv_host);
9308 9309 9310 9311 9312 9313 9314
          }
          else
          {
            $$->host.str= (char *) "%";
            $$->host.length= 1;
          }
	};
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9315

9316
/* Keyword that we allow for identifiers (except SP labels) */
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keyword:
9318 9319
	keyword_sp		{}
	| ASCII_SYM		{}
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	| AUTHORS_SYM		{}
9321 9322 9323 9324 9325 9326 9327 9328 9329 9330 9331 9332 9333 9334 9335 9336 9337
	| BACKUP_SYM		{}
	| BEGIN_SYM		{}
	| BYTE_SYM		{}
	| CACHE_SYM		{}
	| CHARSET		{}
	| CHECKSUM_SYM		{}
	| CLOSE_SYM		{}
	| COMMENT_SYM		{}
	| COMMIT_SYM		{}
	| CONTAINS_SYM          {}
        | DEALLOCATE_SYM        {}
	| DO_SYM		{}
	| END			{}
	| EXECUTE_SYM		{}
	| FLUSH_SYM		{}
	| HANDLER_SYM		{}
	| HELP_SYM		{}
9338
        | INSTALL_SYM           {}
9339 9340 9341
	| LANGUAGE_SYM          {}
	| NO_SYM		{}
	| OPEN_SYM		{}
9342
        | PARSER_SYM            {}
9343
	| PARTITION_SYM		{}
9344
        | PLUGIN_SYM            {}
9345 9346 9347 9348 9349 9350 9351 9352 9353
        | PREPARE_SYM           {}
	| REPAIR		{}
	| RESET_SYM		{}
	| RESTORE_SYM		{}
	| ROLLBACK_SYM		{}
	| SAVEPOINT_SYM		{}
	| SECURITY_SYM		{}
	| SIGNED_SYM		{}
	| SLAVE			{}
9354
        | SONAME_SYM            {}
9355 9356 9357 9358
	| START_SYM		{}
	| STOP_SYM		{}
	| TRUNCATE_SYM		{}
	| UNICODE_SYM		{}
9359
        | UNINSTALL_SYM         {}
9360 9361 9362 9363 9364
        | XA_SYM                {}
	;

/*
 * Keywords that we allow for labels in SPs.
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 * Anything that's the beginning of a statement or characteristics
 * must be in keyword above, otherwise we get (harmful) shift/reduce
 * conflicts.
9368 9369
 */
keyword_sp:
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9370
	ACTION			{}
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9371
	| ADDDATE_SYM		{}
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	| AFTER_SYM		{}
9373
	| AGAINST		{}
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9374
	| AGGREGATE_SYM		{}
9375
	| ALGORITHM_SYM		{}
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	| ANY_SYM		{}
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9377
	| AT_SYM                {}
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	| AUTO_INC		{}
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9379
	| AUTOEXTEND_SIZE_SYM   {}
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	| AVG_ROW_LENGTH	{}
	| AVG_SYM		{}
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9382
	| BERKELEY_DB_SYM	{}
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9383
	| BINLOG_SYM		{}
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	| BIT_SYM		{}
	| BOOL_SYM		{}
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9386
	| BOOLEAN_SYM		{}
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9387
	| BTREE_SYM		{}
9388
	| CASCADED              {}
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9389
	| CHAIN_SYM		{}
9390
	| CHANGED		{}
9391
	| CIPHER_SYM		{}
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9392
	| CLIENT_SYM		{}
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9393
	| COALESCE		{}
9394
	| CODE_SYM              {}
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9395
	| COLLATION_SYM		{}
9396
        | COLUMNS               {}
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9397
	| COMMITTED_SYM		{}
9398
	| COMPACT_SYM		{}
9399
	| COMPLETION_SYM	{}
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9400
	| COMPRESSED_SYM	{}
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9401
	| CONCURRENT		{}
9402
	| CONSISTENT_SYM	{}
9403
	| CUBE_SYM		{}
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9404
	| DATA_SYM		{}
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9405
	| DATAFILE_SYM          {}
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	| DATETIME		{}
	| DATE_SYM		{}
	| DAY_SYM		{}
9409
	| DEFINER_SYM		{}
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	| DELAY_KEY_WRITE_SYM	{}
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	| DES_KEY_FILE		{}
	| DIRECTORY_SYM		{}
9413
	| DISABLE_SYM		{}
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	| DISCARD		{}
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	| DISK_SYM              {}
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	| DUMPFILE		{}
	| DUPLICATE_SYM		{}
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	| DYNAMIC_SYM		{}
9419
	| ENDS_SYM		{}
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9420
	| ENUM			{}
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9421
	| ENGINE_SYM		{}
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9422
	| ENGINES_SYM		{}
9423
	| ERRORS		{}
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9424
	| ESCAPE_SYM		{}
9425
	| EVENT_SYM		{}
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9426
	| EVENTS_SYM		{}
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	| EVERY_SYM             {}
	| EXPANSION_SYM         {}
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	| EXTENDED_SYM		{}
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	| EXTENT_SIZE_SYM       {}
9431
	| FAST_SYM		{}
9432
	| FOUND_SYM		{}
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	| ENABLE_SYM		{}
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	| FULL			{}
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	| FILE_SYM		{}
	| FIRST_SYM		{}
	| FIXED_SYM		{}
9438
	| FRAC_SECOND_SYM	{}
9439
	| GEOMETRY_SYM		{}
9440
	| GEOMETRYCOLLECTION	{}
9441
	| GET_FORMAT		{}
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9442
	| GRANTS		{}
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9443
	| GLOBAL_SYM		{}
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9444
	| HASH_SYM		{}
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	| HOSTS_SYM		{}
	| HOUR_SYM		{}
	| IDENTIFIED_SYM	{}
9448
	| INVOKER_SYM		{}
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9449
	| IMPORT		{}
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	| INDEXES		{}
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9451
	| INITIAL_SIZE_SYM      {}
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9452
	| ISOLATION		{}
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9453
	| ISSUER_SYM		{}
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9454
	| INNOBASE_SYM		{}
9455
	| INSERT_METHOD		{}
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9456
	| RELAY_THREAD		{}
9457
	| LAST_SYM		{}
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9458
	| LEAVES                {}
9459
	| LESS_SYM		{}
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9460
	| LEVEL_SYM		{}
9461
	| LINESTRING		{}
9462
	| LIST_SYM		{}
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9463
	| LOCAL_SYM		{}
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9464
	| LOCKS_SYM		{}
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	| LOGFILE_SYM           {}
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	| LOGS_SYM		{}
	| MAX_ROWS		{}
	| MASTER_SYM		{}
	| MASTER_HOST_SYM	{}
	| MASTER_PORT_SYM	{}
	| MASTER_LOG_FILE_SYM	{}
	| MASTER_LOG_POS_SYM	{}
	| MASTER_USER_SYM	{}
	| MASTER_PASSWORD_SYM	{}
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9475
	| MASTER_SERVER_ID_SYM  {}
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9476
	| MASTER_CONNECT_RETRY_SYM	{}
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	| MASTER_SSL_SYM	{}
	| MASTER_SSL_CA_SYM	{}
	| MASTER_SSL_CAPATH_SYM	{}
	| MASTER_SSL_CERT_SYM	{}
	| MASTER_SSL_CIPHER_SYM	{}
	| MASTER_SSL_KEY_SYM	{}
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	| MAX_CONNECTIONS_PER_HOUR	 {}
	| MAX_QUERIES_PER_HOUR	{}
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	| MAX_SIZE_SYM          {}
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9486
	| MAX_UPDATES_PER_HOUR	{}
9487
	| MAX_USER_CONNECTIONS_SYM {}
9488
	| MAX_VALUE_SYM         {}
9489
	| MEDIUM_SYM		{}
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9490
	| MEMORY_SYM		{}
9491
	| MERGE_SYM		{}
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9492
	| MICROSECOND_SYM	{}
9493
        | MIGRATE_SYM           {}
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	| MINUTE_SYM		{}
	| MIN_ROWS		{}
	| MODIFY_SYM		{}
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9497
	| MODE_SYM		{}
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9498
	| MONTH_SYM		{}
9499 9500 9501
	| MULTILINESTRING	{}
	| MULTIPOINT		{}
	| MULTIPOLYGON		{}
9502
        | MUTEX_SYM             {}
9503
	| NAME_SYM              {}
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9504
	| NAMES_SYM		{}
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	| NATIONAL_SYM		{}
	| NCHAR_SYM		{}
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9507
	| NDBCLUSTER_SYM	{}
9508
	| NEXT_SYM		{}
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9509
	| NEW_SYM		{}
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	| NO_WAIT_SYM           {}
	| NODEGROUP_SYM         {}
9512
	| NONE_SYM		{}
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9513
	| NVARCHAR_SYM		{}
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9514
	| OFFSET_SYM		{}
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	| OLD_PASSWORD		{}
9516
	| ONE_SHOT_SYM		{}
9517
        | ONE_SYM               {}
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	| PACK_KEYS_SYM		{}
9519
	| PARTIAL		{}
9520
	| PARTITIONS_SYM	{}
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9521
	| PASSWORD		{}
9522
        | PHASE_SYM             {}
9523
	| POINT_SYM		{}
9524
	| POLYGON		{}
9525
        | PRESERVE_SYM          {}
9526
	| PREV_SYM		{}
9527
        | PRIVILEGES            {}
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9528 9529
	| PROCESS		{}
	| PROCESSLIST_SYM	{}
9530
	| QUARTER_SYM		{}
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9531
	| QUERY_SYM		{}
9532
	| QUICK			{}
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9533
        | REBUILD_SYM           {}
9534
        | RECOVER_SYM           {}
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	| REDO_BUFFER_SIZE_SYM	{}
	| REDOFILE_SYM  	{}
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        | REDUNDANT_SYM         {}
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	| RELAY_LOG_FILE_SYM	{}
	| RELAY_LOG_POS_SYM	{}
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	| RELOAD		{}
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	| REORGANIZE_SYM	{}
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	| REPEATABLE_SYM	{}
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	| REPLICATION		{}
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	| RESOURCES		{}
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        | RESUME_SYM            {}
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	| RETURNS_SYM           {}
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	| ROLLUP_SYM		{}
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	| ROUTINE_SYM		{}
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	| ROWS_SYM		{}
	| ROW_FORMAT_SYM	{}
	| ROW_SYM		{}
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	| RTREE_SYM		{}
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	| SCHEDULE_SYM		{}	
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	| SECOND_SYM		{}
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	| SERIAL_SYM		{}
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	| SERIALIZABLE_SYM	{}
	| SESSION_SYM		{}
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	| SIMPLE_SYM		{}
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	| SHARE_SYM		{}
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	| SHUTDOWN		{}
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	| SNAPSHOT_SYM		{}
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	| SOUNDS_SYM		{}
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	| SQL_CACHE_SYM		{}
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	| SQL_BUFFER_RESULT	{}
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	| SQL_NO_CACHE_SYM	{}
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	| SQL_THREAD		{}
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	| STARTS_SYM		{}
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	| STATUS_SYM		{}
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	| STORAGE_SYM		{}
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	| STRING_SYM		{}
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	| SUBDATE_SYM		{}
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	| SUBJECT_SYM		{}
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	| SUBPARTITION_SYM	{}
	| SUBPARTITIONS_SYM	{}
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	| SUPER_SYM		{}
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        | SUSPEND_SYM           {}
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        | TABLES                {}
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	| TABLESPACE		{}
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	| TEMPORARY		{}
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	| TEMPTABLE_SYM		{}
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	| TEXT_SYM		{}
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	| THAN_SYM		{}
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	| TRANSACTION_SYM	{}
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	| TRIGGERS_SYM		{}
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	| TIMESTAMP		{}
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	| TIMESTAMP_ADD		{}
	| TIMESTAMP_DIFF	{}
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	| TIME_SYM		{}
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	| TYPES_SYM		{}
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        | TYPE_SYM              {}
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        | UDF_RETURNS_SYM       {}
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	| FUNCTION_SYM		{}
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	| UNCOMMITTED_SYM	{}
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	| UNDEFINED_SYM		{}
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	| UNDO_BUFFER_SIZE_SYM	{}
	| UNDOFILE_SYM  	{}
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	| UNKNOWN_SYM		{}
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	| UNTIL_SYM		{}
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	| USER			{}
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	| USE_FRM		{}
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	| VARIABLES		{}
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	| VIEW_SYM		{}
9603
	| VALUE_SYM		{}
9604
	| WARNINGS		{}
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	| WAIT_SYM              {}
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	| WEEK_SYM		{}
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	| WORK_SYM		{}
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	| X509_SYM		{}
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	| YEAR_SYM		{}
	;
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/* Option functions */

set:
	SET opt_option
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SET_OPTION;
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	  mysql_init_select(lex);
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	  lex->option_type=OPT_SESSION;
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	  lex->var_list.empty();
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          lex->one_shot_set= 0;
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	}
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	option_value_list
	{}
	;
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opt_option:
	/* empty */ {}
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	| OPTION {};
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option_value_list:
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	option_type_value
	| option_value_list ',' option_type_value;

option_type_value:
        {
          if (Lex->sphead)
          {
            /*
              If we are in SP we want have own LEX for each assignment.
              This is mostly because it is hard for several sp_instr_set
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              and sp_instr_set_trigger instructions share one LEX.
              (Well, it is theoretically possible but adds some extra
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               overhead on preparation for execution stage and IMO less
               robust).

              QQ: May be we should simply prohibit group assignments in SP?
            */
            LEX *lex;
            Lex->sphead->reset_lex(YYTHD);
            lex= Lex;
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            /* Set new LEX as if we at start of set rule. */
	    lex->sql_command= SQLCOM_SET_OPTION;
	    mysql_init_select(lex);
	    lex->option_type=OPT_SESSION;
	    lex->var_list.empty();
            lex->one_shot_set= 0;
	    lex->sphead->m_tmp_query= lex->tok_start;
          }
        }
9663
	ext_option_value
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        {
          LEX *lex= Lex;
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          if (lex->sphead)
          {
            sp_head *sp= lex->sphead;
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	    if (!lex->var_list.is_empty())
	    {
              /*
                We have assignment to user or system variable or
                option setting, so we should construct sp_instr_stmt
                for it.
              */
              LEX_STRING qbuff;
	      sp_instr_stmt *i;
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              if (!(i= new sp_instr_stmt(sp->instructions(), lex->spcont,
                                         lex)))
                YYABORT;
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              if (lex->ptr - lex->tok_end > 1)
                qbuff.length= lex->ptr - sp->m_tmp_query;
              else
                qbuff.length= lex->tok_end - sp->m_tmp_query;
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              if (!(qbuff.str= alloc_root(YYTHD->mem_root, qbuff.length + 5)))
                YYABORT;
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              strmake(strmake(qbuff.str, "SET ", 4), (char *)sp->m_tmp_query,
                      qbuff.length);
              qbuff.length+= 4;
              i->m_query= qbuff;
              sp->add_instr(i);
            }
            lex->sphead->restore_lex(YYTHD);
          }
        };
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option_type:
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        option_type2    {}
	| GLOBAL_SYM	{ $$=OPT_GLOBAL; }
	| LOCAL_SYM	{ $$=OPT_SESSION; }
	| SESSION_SYM	{ $$=OPT_SESSION; }
	;

option_type2:
	/* empty */	{ $$= OPT_DEFAULT; }
	| ONE_SHOT_SYM	{ Lex->one_shot_set= 1; $$= OPT_SESSION; }
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	;

opt_var_type:
	/* empty */	{ $$=OPT_SESSION; }
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	| GLOBAL_SYM	{ $$=OPT_GLOBAL; }
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	| LOCAL_SYM	{ $$=OPT_SESSION; }
	| SESSION_SYM	{ $$=OPT_SESSION; }
	;

opt_var_ident_type:
	/* empty */		{ $$=OPT_DEFAULT; }
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	| GLOBAL_SYM '.'	{ $$=OPT_GLOBAL; }
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	| LOCAL_SYM '.'		{ $$=OPT_SESSION; }
	| SESSION_SYM '.'	{ $$=OPT_SESSION; }
	;
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ext_option_value:
        sys_option_value
        | option_type2 option_value;
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sys_option_value:
        option_type internal_variable_name equal set_expr_or_default
        {
          LEX *lex=Lex;
9737

9738
          if ($2.var == trg_new_row_fake_var)
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          {
            /* We are in trigger and assigning value to field of new row */
            Item *it;
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            Item_trigger_field *trg_fld;
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            sp_instr_set_trigger_field *sp_fld;
	    LINT_INIT(sp_fld);
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            if ($1)
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
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            }
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            if ($4)
              it= $4;
9752
            else
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            {
              /* QQ: Shouldn't this be field's default value ? */
              it= new Item_null();
            }
9757

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            if (!(trg_fld= new Item_trigger_field(Lex->current_context(),
9759
                                                  Item_trigger_field::NEW_ROW,
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                                                  $2.base_name.str,
                                                  Item_trigger_field::AT_UPDATE)
                                                  ) ||
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                !(sp_fld= new sp_instr_set_trigger_field(lex->sphead->
                          	                         instructions(),
                                	                 lex->spcont,
							 trg_fld,
                                        	         it, lex)))
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              YYABORT;
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            /*
              Let us add this item to list of all Item_trigger_field
              objects in trigger.
            */
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            lex->trg_table_fields.link_in_list((byte *)trg_fld,
                                    (byte **)&trg_fld->next_trg_field);
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9777
            lex->sphead->add_instr(sp_fld);
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          }
          else if ($2.var)
          { /* System variable */
            if ($1)
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              lex->option_type= $1;
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            lex->var_list.push_back(new set_var(lex->option_type, $2.var,
                                    &$2.base_name, $4));
          }
          else
          {
            /* An SP local variable */
            sp_pcontext *ctx= lex->spcont;
            sp_pvar_t *spv;
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            sp_instr_set *sp_set;
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            Item *it;
            if ($1)
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }

            spv= ctx->find_pvar(&$2.base_name);

            if ($4)
              it= $4;
            else if (spv->dflt)
              it= spv->dflt;
            else
              it= new Item_null();
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            sp_set= new sp_instr_set(lex->sphead->instructions(), ctx,
                                     spv->offset, it, spv->type, lex, TRUE);
            lex->sphead->add_instr(sp_set);
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          }
        }
        | option_type TRANSACTION_SYM ISOLATION LEVEL_SYM isolation_types
	{
	  LEX *lex=Lex;
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	  lex->option_type= $1;
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	  lex->var_list.push_back(new set_var(lex->option_type,
                                              find_sys_var("tx_isolation"),
                                              &null_lex_str,
                                              new Item_int((int32) $5)));
	}
        ;

option_value:
	'@' ident_or_text equal expr
	{
          Lex->var_list.push_back(new set_var_user(new Item_func_set_user_var($2,$4)));
	}
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	| '@' '@' opt_var_ident_type internal_variable_name equal set_expr_or_default
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	  {
	    LEX *lex=Lex;
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	    lex->var_list.push_back(new set_var($3, $4.var, &$4.base_name, $6));
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	  }
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	| charset old_or_new_charset_name_or_default
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= Lex;
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	  $2= $2 ? $2: global_system_variables.character_set_client;
9838
	  lex->var_list.push_back(new set_var_collation_client($2,thd->variables.collation_database,$2));
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	}
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        | NAMES_SYM equal expr
	  {
	    LEX *lex= Lex;
            sp_pcontext *spc= lex->spcont;
	    LEX_STRING names;

	    names.str= (char *)"names";
	    names.length= 5;
	    if (spc && spc->find_pvar(&names))
              my_error(ER_SP_BAD_VAR_SHADOW, MYF(0), names.str);
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            else
              yyerror(ER(ER_SYNTAX_ERROR));

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	    YYABORT;
	  }
9855
	| NAMES_SYM charset_name_or_default opt_collate
9856
	{
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	  LEX *lex= Lex;
9858
	  $2= $2 ? $2 : global_system_variables.character_set_client;
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	  $3= $3 ? $3 : $2;
	  if (!my_charset_same($2,$3))
9861
	  {
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	    my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                     $3->name, $2->csname);
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	    YYABORT;
9865
	  }
9866
	  lex->var_list.push_back(new set_var_collation_client($3,$3,$3));
9867
	}
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	| PASSWORD equal text_or_password
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	  {
9870
	    THD *thd=YYTHD;
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	    LEX_USER *user;
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	    LEX *lex= Lex;	    
            sp_pcontext *spc= lex->spcont;
	    LEX_STRING pw;

	    pw.str= (char *)"password";
	    pw.length= 8;
	    if (spc && spc->find_pvar(&pw))
	    {
              my_error(ER_SP_BAD_VAR_SHADOW, MYF(0), pw.str);
	      YYABORT;
	    }
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	    if (!(user=(LEX_USER*) thd->alloc(sizeof(LEX_USER))))
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	      YYABORT;
9885
	    user->host=null_lex_str;
9886
	    user->user.str=thd->security_ctx->priv_user;
9887
	    thd->lex->var_list.push_back(new set_var_password(user, $3));
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	  }
	| PASSWORD FOR_SYM user equal text_or_password
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	  {
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	    Lex->var_list.push_back(new set_var_password($3,$5));
	  }
9893
	;
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internal_variable_name:
	ident
	{
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	  LEX *lex= Lex;
          sp_pcontext *spc= lex->spcont;
	  sp_pvar_t *spv;

	  /* We have to lookup here since local vars can shadow sysvars */
	  if (!spc || !(spv = spc->find_pvar(&$1)))
	  {
            /* Not an SP local variable */
	    sys_var *tmp=find_sys_var($1.str, $1.length);
	    if (!tmp)
	      YYABORT;
	    $$.var= tmp;
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	    $$.base_name= null_lex_str;
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            /*
              If this is time_zone variable we should open time zone
              describing tables 
            */
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            if (tmp == &sys_time_zone &&
                lex->add_time_zone_tables_to_query_tables(YYTHD))
              YYABORT;
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            else if (spc && tmp == &sys_autocommit)
            {
              /*
                We don't allow setting AUTOCOMMIT from a stored function
		or trigger.
              */
              lex->sphead->m_flags|= sp_head::HAS_SET_AUTOCOMMIT_STMT;
            }
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	  }
	  else
	  {
            /* An SP local variable */
	    $$.var= NULL;
	    $$.base_name= $1;
	  }
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	}
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	| ident '.' ident
	  {
9936
            LEX *lex= Lex;
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            if (check_reserved_words(&$1))
            {
9939
	      yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
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            if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
                (!my_strcasecmp(system_charset_info, $1.str, "NEW") || 
                 !my_strcasecmp(system_charset_info, $1.str, "OLD")))
            {
              if ($1.str[0]=='O' || $1.str[0]=='o')
              {
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                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "OLD", "");
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                YYABORT;
              }
              if (lex->trg_chistics.event == TRG_EVENT_DELETE)
              {
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                my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0),
                         "NEW", "on DELETE");
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                YYABORT;
              }
              if (lex->trg_chistics.action_time == TRG_ACTION_AFTER)
              {
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                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "NEW", "after ");
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                YYABORT;
              }
              /* This special combination will denote field of NEW row */
9963
              $$.var= trg_new_row_fake_var;
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              $$.base_name= $3;
            }
            else
            {
              sys_var *tmp=find_sys_var($3.str, $3.length);
              if (!tmp)
                YYABORT;
              if (!tmp->is_struct())
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                my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
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              $$.var= tmp;
              $$.base_name= $1;
            }
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	  }
	| DEFAULT '.' ident
	  {
	    sys_var *tmp=find_sys_var($3.str, $3.length);
	    if (!tmp)
	      YYABORT;
	    if (!tmp->is_struct())
9983
	      my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
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	    $$.var= tmp;
	    $$.base_name.str=    (char*) "default";
	    $$.base_name.length= 7;
9987
	  }
9988
        ;
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isolation_types:
	READ_SYM UNCOMMITTED_SYM	{ $$= ISO_READ_UNCOMMITTED; }
	| READ_SYM COMMITTED_SYM	{ $$= ISO_READ_COMMITTED; }
	| REPEATABLE_SYM READ_SYM	{ $$= ISO_REPEATABLE_READ; }
	| SERIALIZABLE_SYM		{ $$= ISO_SERIALIZABLE; }
	;
9996

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text_or_password:
	TEXT_STRING { $$=$1.str;}
	| PASSWORD '(' TEXT_STRING ')'
	  {
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	    $$= $3.length ? YYTHD->variables.old_passwords ?
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	        Item_func_old_password::alloc(YYTHD, $3.str) :
	        Item_func_password::alloc(YYTHD, $3.str) :
	      $3.str;
	  }
	| OLD_PASSWORD '(' TEXT_STRING ')'
	  {
	    $$= $3.length ? Item_func_old_password::alloc(YYTHD, $3.str) :
	      $3.str;
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	  }
          ;
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set_expr_or_default:
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	expr      { $$=$1; }
	| DEFAULT { $$=0; }
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	| ON	  { $$=new Item_string("ON",  2, system_charset_info); }
	| ALL	  { $$=new Item_string("ALL", 3, system_charset_info); }
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	| BINARY  { $$=new Item_string("binary", 6, system_charset_info); }
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	;
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/* Lock function */

lock:
	LOCK_SYM table_or_tables
	{
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	  LEX *lex= Lex;

	  if (lex->sphead)
	  {
10032
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOCK");
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	    YYABORT;
	  }
	  lex->sql_command= SQLCOM_LOCK_TABLES;
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	}
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	table_lock_list
	{}
10039
	;
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table_or_tables:
	TABLE_SYM
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	| TABLES;
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table_lock_list:
	table_lock
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	| table_lock_list ',' table_lock;
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table_lock:
	table_ident opt_table_alias lock_option
10051
	{
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	  if (!Select->add_table_to_list(YYTHD, $1, $2, 0, (thr_lock_type) $3))
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	   YYABORT;
	}
10055
        ;
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lock_option:
	READ_SYM	{ $$=TL_READ_NO_INSERT; }
10059
	| WRITE_SYM     { $$=YYTHD->update_lock_default; }
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	| LOW_PRIORITY WRITE_SYM { $$=TL_WRITE_LOW_PRIORITY; }
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	| READ_SYM LOCAL_SYM { $$= TL_READ; }
        ;
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unlock:
10065 10066 10067 10068 10069 10070
	UNLOCK_SYM
	{
	  LEX *lex= Lex;

	  if (lex->sphead)
	  {
10071
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "UNLOCK");
10072 10073 10074 10075 10076 10077
	    YYABORT;
	  }
	  lex->sql_command= SQLCOM_UNLOCK_TABLES;
	}
	table_or_tables
	{}
10078
        ;
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10081
/*
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** Handler: direct access to ISAM functions
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*/

handler:
	HANDLER_SYM table_ident OPEN_SYM opt_table_alias
	{
10088
	  LEX *lex= Lex;
10089 10090 10091 10092 10093
	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
	    YYABORT;
	  }
10094
	  lex->sql_command = SQLCOM_HA_OPEN;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, $4, 0))
10096 10097
	    YYABORT;
	}
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	| HANDLER_SYM table_ident_nodb CLOSE_SYM
10099
	{
10100
	  LEX *lex= Lex;
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	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
	    YYABORT;
	  }
10106
	  lex->sql_command = SQLCOM_HA_CLOSE;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
10108 10109
	    YYABORT;
	}
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	| HANDLER_SYM table_ident_nodb READ_SYM
10111
	{
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	  LEX *lex=Lex;
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	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
	    YYABORT;
	  }
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	  lex->sql_command = SQLCOM_HA_READ;
	  lex->ha_rkey_mode= HA_READ_KEY_EXACT;	/* Avoid purify warnings */
10120
	  lex->current_select->select_limit= new Item_int((int32) 1);
10121
	  lex->current_select->offset_limit= 0;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
10123
	    YYABORT;
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        }
10125
        handler_read_or_scan where_clause opt_limit_clause {}
10126
        ;
10127

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handler_read_or_scan:
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	handler_scan_function         { Lex->ident= null_lex_str; }
        | ident handler_rkey_function { Lex->ident= $1; }
10131
        ;
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handler_scan_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
10135 10136
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
        ;
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handler_rkey_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
	| PREV_SYM { Lex->ha_read_mode = RPREV;  }
	| LAST_SYM { Lex->ha_read_mode = RLAST;  }
10143 10144
	| handler_rkey_mode
	{
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	  LEX *lex=Lex;
	  lex->ha_read_mode = RKEY;
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	  lex->ha_rkey_mode=$1;
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	  if (!(lex->insert_list = new List_item))
10149
	    YYABORT;
10150 10151
	} '(' values ')' { }
        ;
10152 10153

handler_rkey_mode:
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	  EQ     { $$=HA_READ_KEY_EXACT;   }
	| GE     { $$=HA_READ_KEY_OR_NEXT; }
	| LE     { $$=HA_READ_KEY_OR_PREV; }
	| GT_SYM { $$=HA_READ_AFTER_KEY;   }
10158 10159
	| LT     { $$=HA_READ_BEFORE_KEY;  }
        ;
10160

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/* GRANT / REVOKE */

revoke:
10164
	REVOKE clear_privileges revoke_command
10165 10166 10167 10168
	{}
        ;

revoke_command:
10169
	grant_privileges ON opt_table grant_ident FROM grant_list
10170
	{
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          LEX *lex= Lex;
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= 0;
        }
        |
        grant_privileges ON FUNCTION_SYM grant_ident FROM grant_list
        {
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
          }
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= TYPE_ENUM_FUNCTION;
          
        }
	|
        grant_privileges ON PROCEDURE grant_ident FROM grant_list
        {
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
          }
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= TYPE_ENUM_PROCEDURE;
10199
        }
10200
	|
10201
	ALL opt_privileges ',' GRANT OPTION FROM grant_list
10202 10203 10204
	{
	  Lex->sql_command = SQLCOM_REVOKE_ALL;
	}
10205
	;
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grant:
10208 10209 10210 10211 10212 10213
	GRANT clear_privileges grant_command
	{}
        ;

grant_command:
	grant_privileges ON opt_table grant_ident TO_SYM grant_list
10214
	require_clause grant_options
10215 10216 10217 10218 10219 10220 10221 10222 10223 10224 10225 10226 10227 10228 10229 10230 10231 10232 10233 10234 10235 10236 10237 10238 10239 10240 10241 10242 10243 10244 10245 10246
	{
          LEX *lex= Lex;
          lex->sql_command= SQLCOM_GRANT;
          lex->type= 0;
        }
        |
	grant_privileges ON FUNCTION_SYM grant_ident TO_SYM grant_list
	require_clause grant_options
	{
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
          }
          lex->sql_command= SQLCOM_GRANT;
          lex->type= TYPE_ENUM_FUNCTION;
        }
        |
	grant_privileges ON PROCEDURE grant_ident TO_SYM grant_list
	require_clause grant_options
	{
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
          }
          lex->sql_command= SQLCOM_GRANT;
          lex->type= TYPE_ENUM_PROCEDURE;
        }
        ;
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10248 10249 10250 10251
opt_table:
	/* Empty */
	| TABLE_SYM ;
        
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grant_privileges:
10253 10254 10255 10256 10257 10258
	object_privilege_list { }
	| ALL opt_privileges
        { 
          Lex->all_privileges= 1; 
          Lex->grant= GLOBAL_ACLS;
        }
10259
        ;
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opt_privileges:
	/* empty */
	| PRIVILEGES
	;

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object_privilege_list:
	object_privilege
	| object_privilege_list ',' object_privilege;
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10270
object_privilege:
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	SELECT_SYM	{ Lex->which_columns = SELECT_ACL;} opt_column_list {}
10272 10273 10274
	| INSERT	{ Lex->which_columns = INSERT_ACL;} opt_column_list {}
	| UPDATE_SYM	{ Lex->which_columns = UPDATE_ACL; } opt_column_list {}
	| REFERENCES	{ Lex->which_columns = REFERENCES_ACL;} opt_column_list {}
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	| DELETE_SYM	{ Lex->grant |= DELETE_ACL;}
	| USAGE		{}
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	| INDEX_SYM	{ Lex->grant |= INDEX_ACL;}
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	| ALTER		{ Lex->grant |= ALTER_ACL;}
	| CREATE	{ Lex->grant |= CREATE_ACL;}
	| DROP		{ Lex->grant |= DROP_ACL;}
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	| EXECUTE_SYM	{ Lex->grant |= EXECUTE_ACL;}
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	| RELOAD	{ Lex->grant |= RELOAD_ACL;}
	| SHUTDOWN	{ Lex->grant |= SHUTDOWN_ACL;}
	| PROCESS	{ Lex->grant |= PROCESS_ACL;}
	| FILE_SYM	{ Lex->grant |= FILE_ACL;}
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	| GRANT OPTION  { Lex->grant |= GRANT_ACL;}
	| SHOW DATABASES { Lex->grant |= SHOW_DB_ACL;}
	| SUPER_SYM	{ Lex->grant |= SUPER_ACL;}
	| CREATE TEMPORARY TABLES { Lex->grant |= CREATE_TMP_ACL;}
	| LOCK_SYM TABLES   { Lex->grant |= LOCK_TABLES_ACL; }
10291 10292 10293 10294
	| REPLICATION SLAVE  { Lex->grant |= REPL_SLAVE_ACL; }
	| REPLICATION CLIENT_SYM { Lex->grant |= REPL_CLIENT_ACL; }
	| CREATE VIEW_SYM { Lex->grant |= CREATE_VIEW_ACL; }
	| SHOW VIEW_SYM { Lex->grant |= SHOW_VIEW_ACL; }
10295 10296
	| CREATE ROUTINE_SYM { Lex->grant |= CREATE_PROC_ACL; }
	| ALTER ROUTINE_SYM { Lex->grant |= ALTER_PROC_ACL; }
10297
	| CREATE USER { Lex->grant |= CREATE_USER_ACL; }
10298
        | EVENT_SYM { Lex->grant |= EVENT_ACL;}
10299
        | TRIGGER_SYM { Lex->grant |= TRIGGER_ACL; }
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	;
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10303 10304
opt_and:
	/* empty */	{}
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	| AND_SYM	{}
10306 10307 10308 10309 10310 10311 10312 10313 10314
	;

require_list:
	 require_list_element opt_and require_list
	 | require_list_element
	 ;

require_list_element:
	SUBJECT_SYM TEXT_STRING
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	{
	  LEX *lex=Lex;
	  if (lex->x509_subject)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "SUBJECT");
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	    YYABORT;
	  }
	  lex->x509_subject=$2.str;
	}
	| ISSUER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->x509_issuer)
	  {
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10329
	    my_error(ER_DUP_ARGUMENT, MYF(0), "ISSUER");
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	    YYABORT;
	  }
	  lex->x509_issuer=$2.str;
	}
	| CIPHER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->ssl_cipher)
	  {
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10339
	    my_error(ER_DUP_ARGUMENT, MYF(0), "CIPHER");
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	    YYABORT;
	  }
	  lex->ssl_cipher=$2.str;
	}
	;
10345

10346
grant_ident:
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	'*'
	  {
10349
	    LEX *lex= Lex;
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	    lex->current_select->db= lex->thd->db;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
10357
	      YYABORT;
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10358
	    }
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	  }
	| ident '.' '*'
	  {
10362
	    LEX *lex= Lex;
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10363
	    lex->current_select->db = $1.str;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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10367
	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
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10370 10371 10372 10373 10374
	      YYABORT;
	    }
	  }
	| '*' '.' '*'
	  {
10375
	    LEX *lex= Lex;
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10376
	    lex->current_select->db = NULL;
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	    if (lex->grant == GLOBAL_ACLS)
	      lex->grant= GLOBAL_ACLS & ~GRANT_ACL;
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	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
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10383 10384 10385 10386 10387
	      YYABORT;
	    }
	  }
	| table_ident
	  {
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10388
	    LEX *lex=Lex;
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10389
	    if (!lex->current_select->add_table_to_list(lex->thd, $1,NULL,0))
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10390
	      YYABORT;
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10391
	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant =  TABLE_ACLS & ~GRANT_ACL;
10393 10394
	  }
          ;
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user_list:
10398 10399 10400 10401 10402 10403 10404 10405 10406 10407
	user  { if (Lex->users_list.push_back($1)) YYABORT;}
	| user_list ',' user
	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;


grant_list:
10408
	grant_user  { if (Lex->users_list.push_back($1)) YYABORT;}
10409
	| grant_list ',' grant_user
10410 10411 10412 10413 10414
	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;
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grant_user:
	user IDENTIFIED_SYM BY TEXT_STRING
	{
	   $$=$1; $1->password=$4;
	   if ($4.length)
	   {
10423
             if (YYTHD->variables.old_passwords)
10424 10425 10426 10427 10428 10429 10430 10431 10432 10433 10434 10435 10436 10437 10438 10439 10440
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
               if (buff)
                 make_scrambled_password_323(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH_323;
             }
             else
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
               if (buff)
                 make_scrambled_password(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH;
             }
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10441 10442 10443
	  }
	}
	| user IDENTIFIED_SYM BY PASSWORD TEXT_STRING
10444
	  { $$= $1; $1->password= $5; }
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10445
	| user
10446
	  { $$= $1; $1->password= null_lex_str; }
10447
        ;
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opt_column_list:
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	/* empty */
	{
	  LEX *lex=Lex;
	  lex->grant |= lex->which_columns;
	}
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	| '(' column_list ')';
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column_list:
	column_list ',' column_list_id
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	| column_list_id;
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column_list_id:
	ident
	{
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	  String *new_str = new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info);
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	  List_iterator <LEX_COLUMN> iter(Lex->columns);
	  class LEX_COLUMN *point;
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	  LEX *lex=Lex;
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	  while ((point=iter++))
	  {
10471 10472
	    if (!my_strcasecmp(system_charset_info,
                               point->column.ptr(), new_str->ptr()))
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		break;
	  }
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	  lex->grant_tot_col|= lex->which_columns;
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	  if (point)
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	    point->rights |= lex->which_columns;
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	  else
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10479
	    lex->columns.push_back(new LEX_COLUMN (*new_str,lex->which_columns));
10480 10481
	}
        ;
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require_clause: /* empty */
10485
        | REQUIRE_SYM require_list
10486 10487 10488
          {
            Lex->ssl_type=SSL_TYPE_SPECIFIED;
          }
10489
        | REQUIRE_SYM SSL_SYM
10490 10491 10492
          {
            Lex->ssl_type=SSL_TYPE_ANY;
          }
10493
        | REQUIRE_SYM X509_SYM
10494 10495 10496 10497 10498 10499 10500
          {
            Lex->ssl_type=SSL_TYPE_X509;
          }
	| REQUIRE_SYM NONE_SYM
	  {
	    Lex->ssl_type=SSL_TYPE_NONE;
	  }
10501
          ;
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grant_options:
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	/* empty */ {}
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	| WITH grant_option_list;
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10506

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grant_option_list:
	grant_option_list grant_option {}
10509 10510
	| grant_option {}
        ;
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grant_option:
	GRANT OPTION { Lex->grant |= GRANT_ACL;}
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        | MAX_QUERIES_PER_HOUR ulong_num
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        {
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	  LEX *lex=Lex;
	  lex->mqh.questions=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::QUERIES_PER_HOUR;
10519
	}
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        | MAX_UPDATES_PER_HOUR ulong_num
10521
        {
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	  LEX *lex=Lex;
	  lex->mqh.updates=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::UPDATES_PER_HOUR;
10525
	}
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10526
        | MAX_CONNECTIONS_PER_HOUR ulong_num
10527
        {
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	  LEX *lex=Lex;
	  lex->mqh.conn_per_hour= $2;
	  lex->mqh.specified_limits|= USER_RESOURCES::CONNECTIONS_PER_HOUR;
10531
	}
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        | MAX_USER_CONNECTIONS_SYM ulong_num
10533
        {
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	  LEX *lex=Lex;
          lex->mqh.user_conn= $2;
          lex->mqh.specified_limits|= USER_RESOURCES::USER_CONNECTIONS;
10537 10538
	}
        ;
10539

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begin:
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	BEGIN_SYM  
        {
	  LEX *lex=Lex;
          lex->sql_command = SQLCOM_BEGIN;
          lex->start_transaction_opt= 0;
        }
        opt_work {}
10548
	;
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opt_work:
	/* empty */ {}
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	| WORK_SYM  {}
10553
        ;
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10554

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opt_chain:
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10556
	/* empty */ { $$= (YYTHD->variables.completion_type == 1); }
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	| AND_SYM NO_SYM CHAIN_SYM	{ $$=0; }
	| AND_SYM CHAIN_SYM		{ $$=1; }
	;

opt_release:
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10562
	/* empty */ { $$= (YYTHD->variables.completion_type == 2); }
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	| RELEASE_SYM 			{ $$=1; }
	| NO_SYM RELEASE_SYM 		{ $$=0; }
	;
	
opt_savepoint:
	/* empty */	{}
	| SAVEPOINT_SYM {}
	;

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commit:
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10573
	COMMIT_SYM opt_work opt_chain opt_release
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10574
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_COMMIT;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
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	}
	;
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rollback:
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10583
	ROLLBACK_SYM opt_work opt_chain opt_release
10584
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
10589
	}
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	| ROLLBACK_SYM opt_work
	  TO_SYM opt_savepoint ident
10592
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK_TO_SAVEPOINT;
	  lex->ident= $5;
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	}
	;

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savepoint:
	SAVEPOINT_SYM ident
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SAVEPOINT;
	  lex->ident= $2;
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	}
	;

release:
	RELEASE_SYM SAVEPOINT_SYM ident
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RELEASE_SAVEPOINT;
	  lex->ident= $3;
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	}
	;
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10617
/*
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   UNIONS : glue selects together
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*/


10622
union_clause:
10623
	/* empty */ {}
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	| union_list
	;
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union_list:
10628
	UNION_SYM union_option
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	{
	  LEX *lex=Lex;
	  if (lex->exchange)
	  {
	    /* Only the last SELECT can have  INTO...... */
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	    my_error(ER_WRONG_USAGE, MYF(0), "UNION", "INTO");
10635
	    YYABORT;
10636
	  }
10637
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
10638
	  {
10639
            yyerror(ER(ER_SYNTAX_ERROR));
10640 10641
	    YYABORT;
	  }
10642
	  if (mysql_new_select(lex, 0))
10643
	    YYABORT;
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          mysql_init_select(lex);
10645
	  lex->current_select->linkage=UNION_TYPE;
10646 10647 10648
          if ($2) /* UNION DISTINCT - remember position */
            lex->current_select->master_unit()->union_distinct=
                                                      lex->current_select;
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	}
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	select_init
        {
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          /*
	    Remove from the name resolution context stack the context of the
            last select in the union.
	  */
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          Lex->pop_context();
        }
10658
	;
10659 10660

union_opt:
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	/* Empty */ { $$= 0; }
	| union_list { $$= 1; }
	| union_order_or_limit { $$= 1; }
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	;
10665

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union_order_or_limit:
10667
	  {
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	    THD *thd= YYTHD;
10669
	    LEX *lex= thd->lex;
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	    DBUG_ASSERT(lex->current_select->linkage != GLOBAL_OPTIONS_TYPE);
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	    SELECT_LEX *sel= lex->current_select;
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	    SELECT_LEX_UNIT *unit= sel->master_unit();
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	    SELECT_LEX *fake= unit->fake_select_lex;
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	    if (fake)
	    {
	      unit->global_parameters= fake;
	      fake->no_table_names_allowed= 1;
	      lex->current_select= fake;
	    }
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	    thd->where= "global ORDER clause";
10681
	  }
10682
	order_or_limit
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          {
	    THD *thd= YYTHD;
10685
	    thd->lex->current_select->no_table_names_allowed= 0;
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	    thd->where= "";
          }
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	;

order_or_limit:
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	order_clause opt_limit_clause_init
	| limit_clause
10693
	;
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union_option:
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	/* empty */ { $$=1; }
	| DISTINCT  { $$=1; }
	| ALL       { $$=0; }
        ;
10700

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singlerow_subselect:
	subselect_start singlerow_subselect_init
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	subselect_end
	{
	  $$= $2;
	};
10707

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singlerow_subselect_init:
10709
	select_init2
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	{
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	  $$= new Item_singlerow_subselect(Lex->current_select->
					   master_unit()->first_select());
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	};
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exists_subselect:
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	subselect_start exists_subselect_init
	subselect_end
	{
	  $$= $2;
	};
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exists_subselect_init:
10723
	select_init2
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	{
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	  $$= new Item_exists_subselect(Lex->current_select->master_unit()->
					first_select());
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	};
10728

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in_subselect:
  subselect_start in_subselect_init
  subselect_end
  {
    $$= $2;
  };

in_subselect_init:
10737
  select_init2
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  {
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    $$= Lex->current_select->master_unit()->first_select();
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  };

10742
subselect_start:
10743
	'(' SELECT_SYM
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	{
10745
	  LEX *lex=Lex;
10746
	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
10747 10748
	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
10749 10750
	  {
            yyerror(ER(ER_SYNTAX_ERROR));
10751 10752
	    YYABORT;
	  }
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	  if (mysql_new_select(Lex, 1))
	    YYABORT;
	};
10756 10757

subselect_end:
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	')'
	{
	  LEX *lex=Lex;
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          lex->pop_context();
10762
	  lex->current_select = lex->current_select->return_after_parsing();
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          lex->nest_level--;
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	};
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10766 10767 10768 10769 10770 10771 10772 10773 10774 10775 10776 10777 10778 10779 10780 10781 10782 10783 10784 10785 10786 10787 10788 10789 10790 10791 10792 10793 10794 10795 10796 10797 10798 10799 10800 10801 10802 10803 10804 10805 10806 10807 10808 10809 10810 10811 10812 10813 10814 10815 10816 10817 10818 10819 10820 10821 10822 10823 10824 10825 10826 10827 10828 10829 10830 10831 10832 10833 10834 10835 10836 10837 10838 10839 10840 10841 10842 10843 10844 10845 10846 10847 10848 10849 10850 10851 10852 10853 10854 10855 10856 10857 10858 10859 10860 10861 10862 10863 10864 10865 10866 10867 10868 10869 10870 10871 10872 10873 10874 10875 10876 10877
definer:
	get_definer
	{
	  THD *thd= YYTHD;
	  
	  if (! (thd->lex->definer= create_definer(thd, &$1->user, &$1->host)))
	    YYABORT;
	}
	;

get_definer:
	opt_current_definer
	{
	  THD *thd= YYTHD;
          
	  if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
	    YYABORT;

	  if (get_default_definer(thd, $$))
	    YYABORT;
	}
	| DEFINER_SYM EQ ident_or_text '@' ident_or_text
	{
	  if (!($$=(LEX_USER*) YYTHD->alloc(sizeof(st_lex_user))))
	    YYABORT;

	  $$->user= $3;
	  $$->host= $5;
	}
	;

opt_current_definer:
	/* empty */
	| DEFINER_SYM EQ CURRENT_USER optional_braces
	;

/**************************************************************************

 CREATE VIEW statement options.

**************************************************************************/

view_replace_or_algorithm:
	view_replace
	{}
	| view_replace view_algorithm
	{}
	| view_algorithm
	{}
	;

view_replace:
	OR_SYM REPLACE
	{ Lex->create_view_mode= VIEW_CREATE_OR_REPLACE; }
	;

view_algorithm:
	ALGORITHM_SYM EQ UNDEFINED_SYM
	{ Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED; }
	| ALGORITHM_SYM EQ MERGE_SYM
	{ Lex->create_view_algorithm= VIEW_ALGORITHM_MERGE; }
	| ALGORITHM_SYM EQ TEMPTABLE_SYM
	{ Lex->create_view_algorithm= VIEW_ALGORITHM_TMPTABLE; }
	;

view_algorithm_opt:
	/* empty */
	{ Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED; }
	| view_algorithm
	{}
	;

view_or_trigger:
	definer view_or_trigger_tail
	{}
	| view_replace_or_algorithm definer view_tail
	{}
	;

view_or_trigger_tail:
	view_tail
	{}
	| trigger_tail
	{}
	;

view_suid:
	/* empty */
	{ Lex->create_view_suid= TRUE; }
	| SQL_SYM SECURITY_SYM DEFINER_SYM
	{ Lex->create_view_suid= TRUE; }
	| SQL_SYM SECURITY_SYM INVOKER_SYM
	{ Lex->create_view_suid= FALSE; }
	;

view_tail:
	view_suid VIEW_SYM table_ident
	{
	  THD *thd= YYTHD;
	  LEX *lex= thd->lex;
	  lex->sql_command= SQLCOM_CREATE_VIEW;
	  /* first table in list is target VIEW name */
	  if (!lex->select_lex.add_table_to_list(thd, $3, NULL, 0))
	    YYABORT;
	}
	view_list_opt AS view_select view_check_option
	{}
	;

view_list_opt:
	/* empty */
	{}
10878 10879 10880 10881 10882 10883 10884 10885 10886 10887 10888 10889 10890 10891 10892 10893
	| '(' view_list ')'
	;

view_list:
	ident 
	  {
	    Lex->view_list.push_back((LEX_STRING*)
				     sql_memdup(&$1, sizeof(LEX_STRING)));
	  }
	| view_list ',' ident
	  {
	    Lex->view_list.push_back((LEX_STRING*)
				     sql_memdup(&$3, sizeof(LEX_STRING)));
	  }
	;

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view_select:
	SELECT_SYM remember_name select_init2
	{
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          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          char *stmt_beg= (lex->sphead ?
                           (char *)lex->sphead->m_tmp_query :
                           thd->query);
	  lex->create_view_select_start= $2 - stmt_beg;
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	}
	| '(' remember_name select_paren ')' union_opt
	{
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          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          char *stmt_beg= (lex->sphead ?
                           (char *)lex->sphead->m_tmp_query :
                           thd->query);
	  lex->create_view_select_start= $2 - stmt_beg;
10912
	}
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	;

10915
view_check_option:
10916
	/* empty */
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	{ Lex->create_view_check= VIEW_CHECK_NONE; }
	| WITH CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_CASCADED; }
	| WITH CASCADED CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_CASCADED; }
	| WITH LOCAL_SYM CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_LOCAL; }
10924
	;
10925

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/**************************************************************************

 CREATE TRIGGER statement parts.

**************************************************************************/

trigger_tail:
10933
	TRIGGER_SYM remember_name sp_name trg_action_time trg_event
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	ON table_ident FOR_SYM EACH_SYM ROW_SYM
	{
	  LEX *lex= Lex;
	  sp_head *sp;
10938

10939
	  if (lex->sphead)
10940
	  {
10941 10942
	    my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "TRIGGER");
	    YYABORT;
10943
	  }
10944

10945 10946 10947 10948
	  if (!(sp= new sp_head()))
	    YYABORT;
	  sp->reset_thd_mem_root(YYTHD);
	  sp->init(lex);
10949

10950
	  lex->trigger_definition_begin= $2;
10951

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	  sp->m_type= TYPE_ENUM_TRIGGER;
	  lex->sphead= sp;
	  lex->spname= $3;
	  /*
	    We have to turn of CLIENT_MULTI_QUERIES while parsing a
	    stored procedure, otherwise yylex will chop it into pieces
	    at each ';'.
	  */
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	  $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
10961
	  YYTHD->client_capabilities &= ~CLIENT_MULTI_QUERIES;
10962

10963 10964 10965
	  bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  lex->sphead->m_chistics= &lex->sp_chistics;
	  lex->sphead->m_body_begin= lex->ptr;
10966 10967
          while (my_isspace(system_charset_info, lex->sphead->m_body_begin[0]))
            ++lex->sphead->m_body_begin;
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	}
	sp_proc_stmt
	{
	  LEX *lex= Lex;
	  sp_head *sp= lex->sphead;
10973

10974 10975 10976
	  lex->sql_command= SQLCOM_CREATE_TRIGGER;
	  sp->init_strings(YYTHD, lex, $3);
	  /* Restore flag if it was cleared above */
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	  YYTHD->client_capabilities |= $<ulong_num>11;
10979
	  sp->restore_thd_mem_root(YYTHD);
10980

10981 10982
	  if (sp->is_not_allowed_in_function("trigger"))
	      YYABORT;
10983

10984 10985 10986 10987
	  /*
	    We have to do it after parsing trigger body, because some of
	    sp_proc_stmt alternatives are not saving/restoring LEX, so
	    lex->query_tables can be wiped out.
10988

10989
	    QQ: What are other consequences of this?
10990

10991 10992
	    QQ: Could we loosen lock type in certain cases ?
	  */
10993
	  if (!lex->select_lex.add_table_to_list(YYTHD, $7,
10994 10995 10996 10997 10998
	                                         (LEX_STRING*) 0,
	                                         TL_OPTION_UPDATING,
	                                         TL_WRITE))
	    YYABORT;
	}
10999 11000
	;

11001
/*************************************************************************/
11002

11003 11004
xa: XA_SYM begin_or_start xid opt_join_or_resume
      {
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        Lex->sql_command = SQLCOM_XA_START;
11006
      }
11007
    | XA_SYM END xid opt_suspend
11008
      {
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        Lex->sql_command = SQLCOM_XA_END;
11010 11011 11012
      }
    | XA_SYM PREPARE_SYM xid
      {
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        Lex->sql_command = SQLCOM_XA_PREPARE;
11014 11015 11016
      }
    | XA_SYM COMMIT_SYM xid opt_one_phase
      {
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11017
        Lex->sql_command = SQLCOM_XA_COMMIT;
11018 11019 11020
      }
    | XA_SYM ROLLBACK_SYM xid
      {
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11021
        Lex->sql_command = SQLCOM_XA_ROLLBACK;
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      }
    | XA_SYM RECOVER_SYM
      {
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11025
        Lex->sql_command = SQLCOM_XA_RECOVER;
11026 11027 11028
      }
    ;

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xid: text_string
     {
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       YYERROR_UNLESS($1->length() <= MAXGTRIDSIZE);
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       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
         YYABORT;
       Lex->xid->set(1L, $1->ptr(), $1->length(), 0, 0);
     }
     | text_string ',' text_string
     {
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11038
       YYERROR_UNLESS($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
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       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
         YYABORT;
       Lex->xid->set(1L, $1->ptr(), $1->length(), $3->ptr(), $3->length());
     }
     | text_string ',' text_string ',' ulong_num
     {
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11045
       YYERROR_UNLESS($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
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       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
         YYABORT;
       Lex->xid->set($5, $1->ptr(), $1->length(), $3->ptr(), $3->length());
     }
     ;
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begin_or_start:   BEGIN_SYM {}
    |             START_SYM {}
    ;

opt_join_or_resume:
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | JOIN_SYM              { Lex->xa_opt=XA_JOIN;        }
    | RESUME_SYM            { Lex->xa_opt=XA_RESUME;      }
    ;

opt_one_phase:
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | ONE_SYM PHASE_SYM     { Lex->xa_opt=XA_ONE_PHASE;   }
    ;

11067
opt_suspend:
11068 11069
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | SUSPEND_SYM           { Lex->xa_opt=XA_SUSPEND;     }
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      opt_migrate
    ;

opt_migrate:
    /* nothing */           { }
11075 11076 11077
    | FOR_SYM MIGRATE_SYM   { Lex->xa_opt=XA_FOR_MIGRATE; }
    ;

11078
install:
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11079
  INSTALL_SYM PLUGIN_SYM ident SONAME_SYM TEXT_STRING_sys
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  {
    LEX *lex= Lex;
    lex->sql_command= SQLCOM_INSTALL_PLUGIN;
    lex->comment= $3;
    lex->ident= $5;
  };
11086

11087
uninstall:
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11088
  UNINSTALL_SYM PLUGIN_SYM ident
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  {
    LEX *lex= Lex;
    lex->sql_command= SQLCOM_UNINSTALL_PLUGIN;
    lex->comment= $3;
  };