Merge bk-internal.mysql.com:/home/bk/mysql-4.1-runtime

into  bodhi.local:/opt/local/work/mysql-4.1-4968-to-push

mysql-test/r/ps.result

@@ -1035,4 +1035,71 @@ EXECUTE stmt USING @a;
 0	0
 DEALLOCATE PREPARE stmt;
 DROP TABLE t1;
+DROP TABLE IF EXISTS t1, t2;
+CREATE TABLE t1 (i INT);
+PREPARE st_19182
+FROM "CREATE TABLE t2 (i INT, j INT, KEY (i), KEY(j)) SELECT i FROM t1";
+EXECUTE st_19182;
+DESC t2;
+Field	Type	Null	Key	Default	Extra
+j	int(11)	YES	MUL	NULL	
+i	int(11)	YES	MUL	NULL	
+DROP TABLE t2;
+EXECUTE st_19182;
+DESC t2;
+Field	Type	Null	Key	Default	Extra
+j	int(11)	YES	MUL	NULL	
+i	int(11)	YES	MUL	NULL	
+DEALLOCATE PREPARE st_19182;
+DROP TABLE t2, t1;
+drop database if exists mysqltest;
+drop table if exists t1, t2;
+create database mysqltest character set utf8;
+prepare stmt1 from "create table mysqltest.t1 (c char(10))";
+prepare stmt2 from "create table mysqltest.t2 select 'test'";
+execute stmt1;
+execute stmt2;
+show create table mysqltest.t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c` char(10) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=utf8
+show create table mysqltest.t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `test` char(4) character set latin1 NOT NULL default ''
+) ENGINE=MyISAM DEFAULT CHARSET=utf8
+drop table mysqltest.t1;
+drop table mysqltest.t2;
+alter database mysqltest character set latin1;
+execute stmt1;
+execute stmt2;
+show create table mysqltest.t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c` char(10) character set utf8 default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+show create table mysqltest.t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `test` char(4) NOT NULL default ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop database mysqltest;
+deallocate prepare stmt1;
+deallocate prepare stmt2;
+execute stmt;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c` char(10) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 DATA DIRECTORY='MYSQLTEST_VARDIR/tmp/'
+drop table t1;
+execute stmt;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c` char(10) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 DATA DIRECTORY='MYSQLTEST_VARDIR/tmp/'
+drop table t1;
+deallocate prepare stmt;
 End of 4.1 tests.

mysql-test/t/ps.test

@@ -1068,5 +1068,77 @@ EXECUTE stmt USING @a;
 DEALLOCATE PREPARE stmt;
 DROP TABLE t1;
 
+#
+# Bug#19182: CREATE TABLE bar (m INT) SELECT n FROM foo; doesn't work
+# from stored procedure.
+#
+# The cause of a bug was that cached LEX::create_list was modified,
+# and then together with LEX::key_list was reset.
+#
+--disable_warnings
+DROP TABLE IF EXISTS t1, t2;
+--enable_warnings
+
+CREATE TABLE t1 (i INT);
+
+PREPARE st_19182
+FROM "CREATE TABLE t2 (i INT, j INT, KEY (i), KEY(j)) SELECT i FROM t1";
 
+EXECUTE st_19182;
+DESC t2;
+
+DROP TABLE t2;
+
+# Check that on second execution we don't loose 'j' column and the keys
+# on 'i' and 'j' columns.
+EXECUTE st_19182;
+DESC t2;
+
+DEALLOCATE PREPARE st_19182;
+DROP TABLE t2, t1;
+
+#
+# Bug #22060 "ALTER TABLE x AUTO_INCREMENT=y in SP crashes server"
+#
+# Code which implemented CREATE/ALTER TABLE and CREATE DATABASE
+# statement modified HA_CREATE_INFO structure in LEX, making these
+# statements PS/SP-unsafe (their re-execution might have resulted
+# in incorrect results).
+#
+--disable_warnings
+drop database if exists mysqltest;
+drop table if exists t1, t2;
+--enable_warnings
+# CREATE TABLE and CREATE TABLE ... SELECT
+create database mysqltest character set utf8;
+prepare stmt1 from "create table mysqltest.t1 (c char(10))";
+prepare stmt2 from "create table mysqltest.t2 select 'test'";
+execute stmt1;
+execute stmt2;
+show create table mysqltest.t1;
+show create table mysqltest.t2;
+drop table mysqltest.t1;
+drop table mysqltest.t2;
+alter database mysqltest character set latin1;
+execute stmt1;
+execute stmt2;
+show create table mysqltest.t1;
+show create table mysqltest.t2;
+drop database mysqltest;
+deallocate prepare stmt1;
+deallocate prepare stmt2;
+# CREATE TABLE with DATA DIRECTORY option
+--disable_query_log
+eval prepare stmt from "create table t1 (c char(10)) data directory='$MYSQLTEST_VARDIR/tmp'";
+--enable_query_log
+execute stmt;
+--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
+show create table t1;
+drop table t1;
+execute stmt;
+--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
+show create table t1;
+drop table t1;
+deallocate prepare stmt;
+#
 --echo End of 4.1 tests.

sql/mysql_priv.h

@@ -563,25 +563,22 @@ int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
 		       uint &key_count, int select_field_count);
 int mysql_create_table(THD *thd,const char *db, const char *table_name,
 		       HA_CREATE_INFO *create_info,
-		       List<create_field> &fields, List<Key> &keys,
+                       Alter_info *alter_info,
 		       bool tmp_table, uint select_field_count);
 
 TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
 			       const char *db, const char *name,
-			       List<create_field> *extra_fields,
-			       List<Key> *keys,
+                               Alter_info *alter_info,
 			       List<Item> *items,
 			       MYSQL_LOCK **lock);
 int mysql_alter_table(THD *thd, char *new_db, char *new_name,
 		      HA_CREATE_INFO *create_info,
 		      TABLE_LIST *table_list,
-		      List<create_field> &fields,
-		      List<Key> &keys,
+                      Alter_info *alter_info,
 		      uint order_num, ORDER *order,
 		      enum enum_duplicates handle_duplicates,
-                      bool ignore,
-		      ALTER_INFO *alter_info, bool do_send_ok=1);
-int mysql_recreate_table(THD *thd, TABLE_LIST *table_list, bool do_send_ok);
+                      bool ignore);
+int mysql_recreate_table(THD *thd, TABLE_LIST *table_list);
 int mysql_create_like_table(THD *thd, TABLE_LIST *table,
                             HA_CREATE_INFO *create_info,
                             Table_ident *src_table);
@@ -590,9 +587,6 @@ bool mysql_rename_table(enum db_type base,
 			const char * old_name,
 			const char *new_db,
 			const char * new_name);
-int mysql_create_index(THD *thd, TABLE_LIST *table_list, List<Key> &keys);
-int mysql_drop_index(THD *thd, TABLE_LIST *table_list,
-		     ALTER_INFO *alter_info);
 int mysql_prepare_update(THD *thd, TABLE_LIST *table_list,
 			 TABLE_LIST *update_table_list,
 			 Item **conds, uint order_num, ORDER *order);
@@ -679,7 +673,8 @@ int get_quote_char_for_identifier(THD *thd, const char *name, uint length);
 void mysqld_list_fields(THD *thd,TABLE_LIST *table, const char *wild);
 int mysqld_dump_create_info(THD *thd, TABLE *table, int fd = -1);
 int mysqld_show_create(THD *thd, TABLE_LIST *table_list);
-int mysqld_show_create_db(THD *thd, char *dbname, HA_CREATE_INFO *create);
+int mysqld_show_create_db(THD *thd, char *dbname,
+                          const HA_CREATE_INFO *create);
 
 void mysqld_list_processes(THD *thd,const char *user,bool verbose);
 int mysqld_show_status(THD *thd);

sql/sql_class.h

@@ -1293,20 +1293,21 @@ class select_create: public select_insert {
   ORDER *group;
   const char *db;
   const char *name;
-  List<create_field> *extra_fields;
-  List<Key> *keys;
   HA_CREATE_INFO *create_info;
+  Alter_info *alter_info;
   MYSQL_LOCK *lock;
   Field **field;
 public:
   select_create(const char *db_name, const char *table_name,
-		HA_CREATE_INFO *create_info_par,
-		List<create_field> &fields_par,
-		List<Key> &keys_par,
-		List<Item> &select_fields,enum_duplicates duplic, bool ignore)
-    :select_insert (NULL, &select_fields, duplic, ignore), db(db_name),
-    name(table_name), extra_fields(&fields_par),keys(&keys_par),
-    create_info(create_info_par), lock(0)
+                HA_CREATE_INFO *create_info_arg,
+                Alter_info *alter_info_arg,
+                List<Item> &select_fields,
+                enum_duplicates duplic, bool ignore)
+    :select_insert(NULL, &select_fields, duplic, ignore),
+    db(db_name), name(table_name),
+    create_info(create_info_arg),
+    alter_info(alter_info_arg),
+    lock(0)
     {}
   int prepare(List<Item> &list, SELECT_LEX_UNIT *u);
   void store_values(List<Item> &values);

sql/sql_insert.cc

@@ -1805,7 +1805,7 @@ select_create::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
 
   unit= u;
   table= create_table_from_items(thd, create_info, db, name,
-				 extra_fields, keys, &values, &lock);
+                                 alter_info, &values, &lock);
   if (!table)
     DBUG_RETURN(-1);				// abort() deletes table
 

sql/sql_lex.cc

@@ -1015,6 +1015,18 @@ int yylex(void *arg, void *yythd)
   }
 }
 
+
+Alter_info::Alter_info(const Alter_info &rhs, MEM_ROOT *mem_root)
+  :drop_list(rhs.drop_list, mem_root),
+  alter_list(rhs.alter_list, mem_root),
+  key_list(rhs.key_list, mem_root),
+  create_list(rhs.create_list, mem_root),
+  flags(rhs.flags),
+  keys_onoff(rhs.keys_onoff),
+  tablespace_op(rhs.tablespace_op),
+  is_simple(rhs.is_simple)
+{}
+
 /*
   st_select_lex structures initialisations
 */

sql/sql_lex.h

@@ -571,19 +571,61 @@ typedef class st_select_lex SELECT_LEX;
 #define ALTER_ORDER		64
 #define ALTER_OPTIONS		128
 
-typedef struct st_alter_info
+/**
+  @brief Parsing data for CREATE or ALTER TABLE.
+
+  This structure contains a list of columns or indexes to be created,
+  altered or dropped.
+*/
+
+class Alter_info
 {
+public:
   List<Alter_drop>            drop_list;
   List<Alter_column>          alter_list;
+  List<Key>	              key_list;
+  List<create_field>          create_list;
   uint                        flags;
   enum enum_enable_or_disable keys_onoff;
   enum tablespace_op_type     tablespace_op;
   bool                        is_simple;
 
-  st_alter_info(){clear();}
-  void clear(){keys_onoff= LEAVE_AS_IS;tablespace_op= NO_TABLESPACE_OP;}
-  void reset(){drop_list.empty();alter_list.empty();clear();}
-} ALTER_INFO;
+  Alter_info() :
+    flags(0),
+    keys_onoff(LEAVE_AS_IS),
+    tablespace_op(NO_TABLESPACE_OP),
+    is_simple(1)
+  {}
+  void reset()
+  {
+    drop_list.empty();
+    alter_list.empty();
+    key_list.empty();
+    create_list.empty();
+    flags= 0;
+    keys_onoff= LEAVE_AS_IS;
+    tablespace_op= NO_TABLESPACE_OP;
+    is_simple= 1;
+  }
+  /**
+    Construct a copy of this object to be used for mysql_alter_table
+    and mysql_create_table. Historically, these two functions modify
+    their Alter_info arguments. This behaviour breaks re-execution of
+    prepared statements and stored procedures and is compensated by
+    always supplying a copy of Alter_info to these functions.
+    The constructed copy still shares key Key, Alter_drop, create_field
+    and Alter_column elements of the lists - these structures are not
+    modified and thus are not copied.
+
+    @note You need to use check thd->is_fatal_error for out
+    of memory condition after calling this function.
+  */
+  Alter_info(const Alter_info &rhs, MEM_ROOT *mem_root);
+private:
+  Alter_info &operator=(const Alter_info &rhs); // not implemented
+  Alter_info(const Alter_info &rhs);            // not implemented
+};
+
 
 /* The state of the lex parsing. This is saved in the THD struct */
 
@@ -620,8 +662,6 @@ typedef struct st_lex
   List<String>	      interval_list;
   List<LEX_USER>      users_list;
   List<LEX_COLUMN>    columns;
-  List<Key>	      key_list;
-  List<create_field>  create_list;
   List<Item>	      *insert_list,field_list,value_list,update_list;
   List<List_item>     many_values;
   List<set_var_base>  var_list;
@@ -654,7 +694,7 @@ typedef struct st_lex
   bool derived_tables;
   bool safe_to_cache_query;
   bool subqueries, ignore;
-  ALTER_INFO alter_info;
+  Alter_info alter_info;
   /* Prepared statements SQL syntax:*/
   LEX_STRING prepared_stmt_name; /* Statement name (in all queries) */
   /* 

sql/sql_list.h

@@ -66,9 +66,14 @@ public:
   pointer.
 */
 
-class list_node :public Sql_alloc
+
+/**
+  list_node - a node of a single-linked list.
+  @note We never call a destructor for instances of this class.
+*/
+
+struct list_node :public Sql_alloc
 {
-public:
   list_node *next;
   void *info;
   list_node(void *info_par,list_node *next_par)
@@ -76,11 +81,9 @@ public:
   {}
   list_node()					/* For end_of_list */
   {
-      info=0;
+    info= 0;
     next= this;
   }
-  friend class base_list;
-  friend class base_list_iterator;
 };
 
 
@@ -96,11 +99,56 @@ public:
 
   inline void empty() { elements=0; first= &end_of_list; last=&first;}
   inline base_list() { empty(); }
+  /**
+    This is a shallow copy constructor that implicitly passes the ownership
+    from the source list to the new instance. The old instance is not
+    updated, so both objects end up sharing the same nodes. If one of
+    the instances then adds or removes a node, the other becomes out of
+    sync ('last' pointer), while still operational. Some old code uses and
+    relies on this behaviour. This logic is quite tricky: please do not use
+    it in any new code.
+  */
   inline base_list(const base_list &tmp) :Sql_alloc()
   {
-    elements=tmp.elements;
-    first=tmp.first;
-    last=tmp.last;
+    elements= tmp.elements;
+    first= tmp.first;
+    last= elements ? tmp.last : &first;
+  }
+  /**
+    Construct a deep copy of the argument in memory root mem_root.
+    The elements themselves are copied by pointer.
+  */
+  inline base_list(const base_list &rhs, MEM_ROOT *mem_root)
+  {
+    if (rhs.elements)
+    {
+      /*
+        It's okay to allocate an array of nodes at once: we never
+        call a destructor for list_node objects anyway.
+      */
+      first= (list_node*) alloc_root(mem_root,
+                                     sizeof(list_node) * rhs.elements);
+      if (first)
+      {
+        elements= rhs.elements;
+        list_node *dst= first;
+        list_node *src= rhs.first;
+        for (; dst < first + elements - 1; dst++, src= src->next)
+        {
+          dst->info= src->info;
+          dst->next= dst + 1;
+        }
+        /* Copy the last node */
+        dst->info= src->info;
+        dst->next= &end_of_list;
+        /* Setup 'last' member */
+        last= &dst->next;
+        return;
+      }
+    }
+    elements= 0;
+    first= &end_of_list;
+    last= &first;
   }
   inline base_list(bool error) { }
   inline bool push_back(void *info)
@@ -327,6 +375,8 @@ template <class T> class List :public base_list
 public:
   inline List() :base_list() {}
   inline List(const List<T> &tmp) :base_list(tmp) {}
+  inline List(const List<T> &tmp, MEM_ROOT *mem_root) :
+    base_list(tmp, mem_root) {}
   inline bool push_back(T *a) { return base_list::push_back(a); }
   inline bool push_front(T *a) { return base_list::push_front(a); }
   inline T* head() {return (T*) base_list::head(); }

sql/sql_parse.cc

@@ -2478,6 +2478,22 @@ mysql_execute_command(THD *thd)
     }
     /* Skip first table, which is the table we are creating */
     TABLE_LIST *create_table, *create_table_local;
+    /*
+      Code below (especially in mysql_create_table() and select_create
+      methods) may modify HA_CREATE_INFO structure in LEX, so we have to
+      use a copy of this structure to make execution prepared statement-
+      safe. A shallow copy is enough as this code won't modify any memory
+      referenced from this structure.
+    */
+    HA_CREATE_INFO create_info(lex->create_info);
+    Alter_info alter_info(lex->alter_info, thd->mem_root);
+
+    if (thd->is_fatal_error)
+    {
+      /* out of memory when creating a copy of alter_info */
+      res= 1;
+      goto unsent_create_error;
+    }
     tables= lex->unlink_first_table(tables, &create_table,
 				    &create_table_local);
 
@@ -2485,12 +2501,12 @@ mysql_execute_command(THD *thd)
       goto unsent_create_error;
 
 #ifndef HAVE_READLINK
-    lex->create_info.data_file_name=lex->create_info.index_file_name=0;
+    create_info.data_file_name= create_info.index_file_name= NULL;
 #else
     /* Fix names if symlinked tables */
-    if (append_file_to_dir(thd, &lex->create_info.data_file_name,
+    if (append_file_to_dir(thd, &create_info.data_file_name,
 			   create_table->real_name) ||
-	append_file_to_dir(thd,&lex->create_info.index_file_name,
+	append_file_to_dir(thd, &create_info.index_file_name,
 			   create_table->real_name))
     {
       res=-1;
@@ -2501,14 +2517,14 @@ mysql_execute_command(THD *thd)
       If we are using SET CHARSET without DEFAULT, add an implicite
       DEFAULT to not confuse old users. (This may change).
     */
-    if ((lex->create_info.used_fields & 
+    if ((create_info.used_fields &
 	 (HA_CREATE_USED_DEFAULT_CHARSET | HA_CREATE_USED_CHARSET)) ==
 	HA_CREATE_USED_CHARSET)
     {
-      lex->create_info.used_fields&= ~HA_CREATE_USED_CHARSET;
-      lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
-      lex->create_info.default_table_charset= lex->create_info.table_charset;
-      lex->create_info.table_charset= 0;
+      create_info.used_fields&= ~HA_CREATE_USED_CHARSET;
+      create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
+      create_info.default_table_charset= create_info.table_charset;
+      create_info.table_charset= 0;
     }
     /*
       The create-select command will open and read-lock the select table
@@ -2542,11 +2558,14 @@ mysql_execute_command(THD *thd)
       if (!(res=open_and_lock_tables(thd,tables)))
       {
 	res= -1;				// If error
+        /*
+          select_create is currently not re-execution friendly and
+          needs to be created for every execution of a PS/SP.
+        */
         if ((result=new select_create(create_table->db,
                                       create_table->real_name,
-				      &lex->create_info,
-                                      lex->create_list,
-                                      lex->key_list,
+                                      &create_info,
+                                      &alter_info,
                                       select_lex->item_list, lex->duplicates,
                                       lex->ignore)))
         {
@@ -2558,22 +2577,18 @@ mysql_execute_command(THD *thd)
           res=handle_select(thd, lex, result);
           select_lex->resolve_mode= SELECT_LEX::NOMATTER_MODE;
         }
-	//reset for PS
-	lex->create_list.empty();
-	lex->key_list.empty();
       }
     }
     else // regular create
     {
       if (lex->name)
-        res= mysql_create_like_table(thd, create_table, &lex->create_info, 
+        res= mysql_create_like_table(thd, create_table, &create_info,
                                      (Table_ident *)lex->name); 
       else
       {
-        res= mysql_create_table(thd,create_table->db,
-			         create_table->real_name, &lex->create_info,
-			         lex->create_list,
-			         lex->key_list,0,0);
+        res= mysql_create_table(thd, create_table->db,
+                                create_table->real_name, &create_info,
+                                &alter_info, 0, 0);
       }
       if (!res)
 	send_ok(thd);
@@ -2591,15 +2606,48 @@ unsent_create_error:
     break;
   }
   case SQLCOM_CREATE_INDEX:
+    /* Fall through */
+  case SQLCOM_DROP_INDEX:
+  /*
+    CREATE INDEX and DROP INDEX are implemented by calling ALTER
+    TABLE with proper arguments. This isn't very fast but it
+    should work for most cases.
+
+    In the future ALTER TABLE will notice that only added
+    indexes and create these one by one for the existing table
+    without having to do a full rebuild.
+
+    One should normally create all indexes with CREATE TABLE or
+    ALTER TABLE.
+  */
+  {
+    Alter_info alter_info(lex->alter_info, thd->mem_root);
+    HA_CREATE_INFO create_info;
+
+    if (thd->is_fatal_error) /* out of memory creating a copy of alter_info*/
+      goto error;
+
     if (check_one_table_access(thd, INDEX_ACL, tables))
       goto error; /* purecov: inspected */
     thd->enable_slow_log= opt_log_slow_admin_statements;
     if (end_active_trans(thd))
-      res= -1;
-    else
-      res = mysql_create_index(thd, tables, lex->key_list);
-    break;
+      goto error;
+    /*
+      Currently CREATE INDEX or DROP INDEX cause a full table rebuild
+      and thus classify as slow administrative statements just like
+      ALTER TABLE.
+    */
+    thd->enable_slow_log= opt_log_slow_admin_statements;
+
+    bzero((char*) &create_info, sizeof(create_info));
+    create_info.db_type= DB_TYPE_DEFAULT;
+    create_info.default_table_charset= thd->variables.collation_database;
 
+    res= mysql_alter_table(thd, tables->db, tables->real_name,
+                           &create_info, tables, &alter_info,
+                           0, (ORDER*)0, DUP_ERROR, 0);
+    break;
+  }
 #ifdef HAVE_REPLICATION
   case SQLCOM_SLAVE_START:
   {
@@ -2642,6 +2690,17 @@ unsent_create_error:
 #else
     {
       ulong priv=0;
+      /*
+        Code in mysql_alter_table() may modify its HA_CREATE_INFO argument,
+        so we have to use a copy of this structure to make execution
+        prepared statement- safe. A shallow copy is enough as no memory
+        referenced from this structure will be modified.
+      */
+      HA_CREATE_INFO create_info(lex->create_info);
+      Alter_info alter_info(lex->alter_info, thd->mem_root);
+
+      if (thd->is_fatal_error) /* out of memory creating a copy of alter_info */
+        goto error;
       if (lex->name && (!lex->name[0] || strlen(lex->name) > NAME_LEN))
       {
 	net_printf(thd, ER_WRONG_TABLE_NAME, lex->name);
@@ -2655,7 +2714,7 @@ unsent_create_error:
           default database if the new name is not explicitly qualified
           by a database. (Bug #11493)
         */
-        if (lex->alter_info.flags & ALTER_RENAME)
+        if (alter_info.flags & ALTER_RENAME)
         {
           if (! thd->db)
           {
@@ -2671,7 +2730,7 @@ unsent_create_error:
 	  check_access(thd,INSERT_ACL | CREATE_ACL,select_lex->db,&priv,0,0)||
 	  check_merge_table_access(thd, tables->db,
 				   (TABLE_LIST *)
-				   lex->create_info.merge_list.first))
+				   create_info.merge_list.first))
 	goto error;				/* purecov: inspected */
       if (grant_option)
       {
@@ -2690,13 +2749,13 @@ unsent_create_error:
 	}
       }
       /* Don't yet allow changing of symlinks with ALTER TABLE */
-      if (lex->create_info.data_file_name)
+      if (create_info.data_file_name)
         push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, 0,
                      "DATA DIRECTORY option ignored");
-      if (lex->create_info.index_file_name)
+      if (create_info.index_file_name)
         push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, 0,
                      "INDEX DIRECTORY option ignored");
-      lex->create_info.data_file_name=lex->create_info.index_file_name=0;
+      create_info.data_file_name= create_info.index_file_name= NULL;
       /* ALTER TABLE ends previous transaction */
       if (end_active_trans(thd))
 	res= -1;
@@ -2704,12 +2763,12 @@ unsent_create_error:
       {
         thd->enable_slow_log= opt_log_slow_admin_statements;
         res= mysql_alter_table(thd, select_lex->db, lex->name,
-			       &lex->create_info,
-			       tables, lex->create_list,
-			       lex->key_list,
+                               &create_info,
+                               tables,
+                               &alter_info,
                                select_lex->order_list.elements,
                                (ORDER *) select_lex->order_list.first,
-			       lex->duplicates, lex->ignore, &lex->alter_info);
+                               lex->duplicates, lex->ignore);
       }
       break;
     }
@@ -2846,7 +2905,7 @@ unsent_create_error:
       goto error; /* purecov: inspected */
     thd->enable_slow_log= opt_log_slow_admin_statements;
     res= (specialflag & (SPECIAL_SAFE_MODE | SPECIAL_NO_NEW_FUNC)) ?
-      mysql_recreate_table(thd, tables, 1) :
+      mysql_recreate_table(thd, tables) :
       mysql_optimize_table(thd, tables, &lex->check_opt);
     /* ! we write after unlocking the table */
     if (!res && !lex->no_write_to_binlog)
@@ -3123,14 +3182,6 @@ unsent_create_error:
     res= mysql_rm_table(thd,tables,lex->drop_if_exists, lex->drop_temporary);
   }
   break;
-  case SQLCOM_DROP_INDEX:
-    if (check_one_table_access(thd, INDEX_ACL, tables))
-      goto error;				/* purecov: inspected */
-    if (end_active_trans(thd))
-      res= -1;
-    else
-      res = mysql_drop_index(thd, tables, &lex->alter_info);
-    break;
   case SQLCOM_SHOW_DATABASES:
 #if defined(DONT_ALLOW_SHOW_COMMANDS)
     send_error(thd,ER_NOT_ALLOWED_COMMAND);   /* purecov: inspected */
@@ -3363,6 +3414,12 @@ purposes internal to the MySQL server", MYF(0));
     break;
   case SQLCOM_CREATE_DB:
   {
+    /*
+      As mysql_create_db() may modify HA_CREATE_INFO structure passed to
+      it, we need to use a copy of LEX::create_info to make execution
+      prepared statement- safe.
+    */
+    HA_CREATE_INFO create_info(lex->create_info);
     if (end_active_trans(thd))
     {
       res= -1;
@@ -3393,7 +3450,7 @@ purposes internal to the MySQL server", MYF(0));
     if (check_access(thd,CREATE_ACL,lex->name,0,1,0))
       break;
     res= mysql_create_db(thd,(lower_case_table_names == 2 ? alias : lex->name),
-			 &lex->create_info, 0);
+			 &create_info, 0);
     break;
   }
   case SQLCOM_DROP_DB:
@@ -4443,14 +4500,16 @@ bool add_field_to_list(THD *thd, char *field_name, enum_field_types type,
   if (type_modifier & PRI_KEY_FLAG)
   {
     lex->col_list.push_back(new key_part_spec(field_name,0));
-    lex->key_list.push_back(new Key(Key::PRIMARY, NullS, HA_KEY_ALG_UNDEF,
-				    0, lex->col_list));
+    lex->alter_info.key_list.push_back(new Key(Key::PRIMARY, NullS,
+                                               HA_KEY_ALG_UNDEF, 0,
+                                               lex->col_list));
     lex->col_list.empty();
   }
   if (type_modifier & (UNIQUE_FLAG | UNIQUE_KEY_FLAG))
   {
     lex->col_list.push_back(new key_part_spec(field_name,0));
-    lex->key_list.push_back(new Key(Key::UNIQUE, NullS, HA_KEY_ALG_UNDEF, 0,
+    lex->alter_info.key_list.push_back(new Key(Key::UNIQUE, NullS,
+                                               HA_KEY_ALG_UNDEF, 0,
                                                lex->col_list));
     lex->col_list.empty();
   }
@@ -4778,7 +4837,7 @@ bool add_field_to_list(THD *thd, char *field_name, enum_field_types type,
 					    new_field->sql_type,
 					    new_field->length);
   new_field->char_length= new_field->length;
-  lex->create_list.push_back(new_field);
+  lex->alter_info.create_list.push_back(new_field);
   lex->last_field=new_field;
   DBUG_RETURN(0);
 }
@@ -5458,57 +5517,6 @@ Item * all_any_subquery_creator(Item *left_expr,
 }
 
 
-/*
-  CREATE INDEX and DROP INDEX are implemented by calling ALTER TABLE with
-  the proper arguments.  This isn't very fast but it should work for most
-  cases.
-
-  In the future ALTER TABLE will notice that only added indexes
-  and create these one by one for the existing table without having to do
-  a full rebuild.
-
-  One should normally create all indexes with CREATE TABLE or ALTER TABLE.
-*/
-
-int mysql_create_index(THD *thd, TABLE_LIST *table_list, List<Key> &keys)
-{
-  List<create_field> fields;
-  ALTER_INFO alter_info;
-  alter_info.flags= ALTER_ADD_INDEX;
-  alter_info.is_simple= 0;
-  HA_CREATE_INFO create_info;
-  DBUG_ENTER("mysql_create_index");
-  bzero((char*) &create_info,sizeof(create_info));
-  create_info.db_type=DB_TYPE_DEFAULT;
-  create_info.default_table_charset= thd->variables.collation_database;
-  create_info.row_type= ROW_TYPE_NOT_USED;
-  DBUG_RETURN(mysql_alter_table(thd,table_list->db,table_list->real_name,
-				&create_info, table_list,
-				fields, keys, 0, (ORDER*)0,
-				DUP_ERROR, 0, &alter_info));
-}
-
-
-int mysql_drop_index(THD *thd, TABLE_LIST *table_list, ALTER_INFO *alter_info)
-{
-  List<create_field> fields;
-  List<Key> keys;
-  HA_CREATE_INFO create_info;
-  DBUG_ENTER("mysql_drop_index");
-  bzero((char*) &create_info,sizeof(create_info));
-  create_info.db_type=DB_TYPE_DEFAULT;
-  create_info.default_table_charset= thd->variables.collation_database;
-  create_info.row_type= ROW_TYPE_NOT_USED;
-  alter_info->clear();
-  alter_info->flags= ALTER_DROP_INDEX;
-  alter_info->is_simple= 0;
-  DBUG_RETURN(mysql_alter_table(thd,table_list->db,table_list->real_name,
-				&create_info, table_list,
-				fields, keys, 0, (ORDER*)0,
-				DUP_ERROR, 0, alter_info));
-}
-
-
 /*
   Multi update query pre-check
 

sql/sql_show.cc

@@ -845,7 +845,7 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
 }
 
 int mysqld_show_create_db(THD *thd, char *dbname,
-			  HA_CREATE_INFO *create_info)
+			  const HA_CREATE_INFO *create_info)
 {
   int length;
   char	path[FN_REFLEN];

sql/sql_table.cc

@@ -456,8 +456,7 @@ void calculate_interval_lengths(CHARSET_INFO *cs, TYPELIB *interval,
     mysql_prepare_table()
     thd			Thread object
     create_info		Create information (like MAX_ROWS)
-    fields		List of fields to create
-    keys		List of keys to create
+    alter_info          List of columns and indexes to create
 
   DESCRIPTION
     Prepares the table and key structures for table creation.
@@ -468,8 +467,8 @@ void calculate_interval_lengths(CHARSET_INFO *cs, TYPELIB *interval,
 */
 
 int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
-			List<create_field> &fields,
-			List<Key> &keys, bool tmp_table, uint &db_options,
+                        Alter_info *alter_info,
+			bool tmp_table, uint &db_options,
 			handler *file, KEY *&key_info_buffer,
 			uint *key_count, int select_field_count)
 {
@@ -482,10 +481,11 @@ int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
   int		timestamps= 0, timestamps_with_niladic= 0;
   int		field_no,dup_no;
   int		select_field_pos,auto_increment=0;
+  List_iterator<create_field> it(alter_info->create_list);
+  List_iterator<create_field> it2(alter_info->create_list);
   DBUG_ENTER("mysql_prepare_table");
 
-  List_iterator<create_field> it(fields),it2(fields);
-  select_field_pos=fields.elements - select_field_count;
+  select_field_pos= alter_info->create_list.elements - select_field_count;
   null_fields=blob_columns=0;
 
   for (field_no=0; (sql_field=it++) ; field_no++)
@@ -883,7 +883,8 @@ int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
 
   /* Create keys */
 
-  List_iterator<Key> key_iterator(keys), key_iterator2(keys);
+  List_iterator<Key> key_iterator(alter_info->key_list);
+  List_iterator<Key> key_iterator2(alter_info->key_list);
   uint key_parts=0, fk_key_count=0;
   bool primary_key=0,unique_key=0;
   Key *key, *key2;
@@ -1336,20 +1337,24 @@ int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
     thd                  Thread object
     db                   Database
     table_name           Table name
-    create_info		Create information (like MAX_ROWS)
-    fields		List of fields to create
-    keys		List of keys to create
+    create_info [in/out] Create information (like MAX_ROWS)
+    alter_info  [in/out] List of columns and indexes to create
     tmp_table            Set to 1 if this is an internal temporary table
                          (From ALTER TABLE)
 
   DESCRIPTION
-    If one creates a temporary table, this is automaticly opened
+    If one creates a temporary table, this is automatically opened
 
     no_log is needed for the case of CREATE ... SELECT,
     as the logging will be done later in sql_insert.cc
     select_field_count is also used for CREATE ... SELECT,
     and must be zero for standard create of table.
 
+    Note that structures passed as 'create_info' and 'alter_info' parameters
+    may be modified by this function. It is responsibility of the caller to
+    make a copy of create_info in order to provide correct execution in
+    prepared statements/stored routines.
+
   RETURN VALUES
     0	ok
     -1	error
@@ -1357,8 +1362,8 @@ int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
 
 int mysql_create_table(THD *thd,const char *db, const char *table_name,
 		       HA_CREATE_INFO *create_info,
-		       List<create_field> &fields,
-		       List<Key> &keys,bool tmp_table,
+                       Alter_info *alter_info,
+                       bool tmp_table,
 		       uint select_field_count)
 {
   char		path[FN_REFLEN];
@@ -1371,7 +1376,7 @@ int mysql_create_table(THD *thd,const char *db, const char *table_name,
   DBUG_ENTER("mysql_create_table");
 
   /* Check for duplicate fields and check type of table to create */
-  if (!fields.elements)
+  if (!alter_info->create_list.elements)
   {
     my_error(ER_TABLE_MUST_HAVE_COLUMNS,MYF(0));
     DBUG_RETURN(-1);
@@ -1423,8 +1428,8 @@ int mysql_create_table(THD *thd,const char *db, const char *table_name,
     create_info->default_table_charset= db_info.default_table_charset;
   }
 
-  if (mysql_prepare_table(thd, create_info, fields,
-			  keys, tmp_table, db_options, file,
+  if (mysql_prepare_table(thd, create_info, alter_info, tmp_table,
+                          db_options, file,
                           key_info_buffer, &key_count,
                           select_field_count))
     DBUG_RETURN(-1);
@@ -1503,8 +1508,8 @@ int mysql_create_table(THD *thd,const char *db, const char *table_name,
   create_info->table_options=db_options;
 
   if (rea_create_table(thd, path, db, table_name,
-                       create_info, fields, key_count,
-		       key_info_buffer))
+                       create_info, alter_info->create_list,
+                       key_count, key_info_buffer))
     goto end;
   if (create_info->options & HA_LEX_CREATE_TMP_TABLE)
   {
@@ -1592,8 +1597,7 @@ make_unique_key_name(const char *field_name,KEY *start,KEY *end)
 
 TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
 			       const char *db, const char *name,
-			       List<create_field> *extra_fields,
-			       List<Key> *keys,
+                               Alter_info *alter_info,
 			       List<Item> *items,
 			       MYSQL_LOCK **lock)
 {
@@ -1627,7 +1631,7 @@ TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
 					   ((Item_field *)item)->field :
 					   (Field*) 0))))
       DBUG_RETURN(0);
-    extra_fields->push_back(cr_field);
+    alter_info->create_list.push_back(cr_field);
   }
   /* create and lock table */
   /* QQ: create and open should be done atomic ! */
@@ -1641,8 +1645,8 @@ TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
     open_table().
   */
   tmp_disable_binlog(thd);
-  if (!mysql_create_table(thd,db,name,create_info,*extra_fields,
-			 *keys,0,select_field_count))
+  if (!mysql_create_table(thd, db, name, create_info, alter_info,
+                          0, select_field_count))
   {
     if (!(table=open_table(thd,db,name,name,(bool*) 0)))
       quick_rm_table(create_info->db_type,db,table_case_name(create_info,name));
@@ -2146,6 +2150,7 @@ send_result_message:
 
     case HA_ADMIN_TRY_ALTER:
     {
+      my_bool save_no_send_ok= thd->net.no_send_ok;
       /*
         This is currently used only by InnoDB. ha_innobase::optimize() answers
         "try with alter", so here we close the table, do an ALTER TABLE,
@@ -2155,7 +2160,9 @@ send_result_message:
       TABLE_LIST *save_next= table->next;
       table->next= 0;
       tmp_disable_binlog(thd); // binlogging is done by caller if wanted
-      result_code= mysql_recreate_table(thd, table, 0);
+      thd->net.no_send_ok= TRUE;
+      result_code= mysql_recreate_table(thd, table);
+      thd->net.no_send_ok= save_no_send_ok;
       reenable_binlog(thd);
       close_thread_tables(thd);
       if (!result_code) // recreation went ok
@@ -2635,206 +2642,6 @@ err:
 }
 
 
-#ifdef NOT_USED
-/*
-  CREATE INDEX and DROP INDEX are implemented by calling ALTER TABLE with
-  the proper arguments.  This isn't very fast but it should work for most
-  cases.
-  One should normally create all indexes with CREATE TABLE or ALTER TABLE.
-*/
-
-int mysql_create_indexes(THD *thd, TABLE_LIST *table_list, List<Key> &keys)
-{
-  List<create_field> fields;
-  List<Alter_drop>   drop;
-  List<Alter_column> alter;
-  HA_CREATE_INFO     create_info;
-  int		     rc;
-  uint		     idx;
-  uint		     db_options;
-  uint		     key_count;
-  TABLE		     *table;
-  Field		     **f_ptr;
-  KEY		     *key_info_buffer;
-  char		     path[FN_REFLEN+1];
-  DBUG_ENTER("mysql_create_index");
-
-  /*
-    Try to use online generation of index.
-    This requires that all indexes can be created online.
-    Otherwise, the old alter table procedure is executed.
-
-    Open the table to have access to the correct table handler.
-  */
-  if (!(table=open_ltable(thd,table_list,TL_WRITE_ALLOW_READ)))
-    DBUG_RETURN(-1);
-
-  /*
-    The add_index method takes an array of KEY structs for the new indexes.
-    Preparing a new table structure generates this array.
-    It needs a list with all fields of the table, which does not need to
-    be correct in every respect. The field names are important.
-  */
-  for (f_ptr= table->field; *f_ptr; f_ptr++)
-  {
-    create_field *c_fld= new create_field(*f_ptr, *f_ptr);
-    c_fld->unireg_check= Field::NONE; /*avoid multiple auto_increments*/
-    fields.push_back(c_fld);
-  }
-  bzero((char*) &create_info,sizeof(create_info));
-  create_info.db_type=DB_TYPE_DEFAULT;
-  create_info.default_table_charset= thd->variables.collation_database;
-  db_options= 0;
-  if (mysql_prepare_table(thd, &create_info, fields,
-			  keys, /*tmp_table*/ 0, db_options, table->file,
-			  key_info_buffer, key_count,
-			  /*select_field_count*/ 0))
-    DBUG_RETURN(-1);
-
-  /*
-    Check if all keys can be generated with the add_index method.
-    If anyone cannot, then take the old way.
-  */
-  for (idx=0; idx< key_count; idx++)
-  {
-    DBUG_PRINT("info", ("creating index %s", key_info_buffer[idx].name));
-    if (!(table->file->index_ddl_flags(key_info_buffer+idx)&
-	  (HA_DDL_ONLINE| HA_DDL_WITH_LOCK)))
-      break ;
-  }
-  if ((idx < key_count)|| !key_count)
-  {
-    /* Re-initialize the create_info, which was changed by prepare table. */
-    bzero((char*) &create_info,sizeof(create_info));
-    create_info.db_type=DB_TYPE_DEFAULT;
-    create_info.default_table_charset= thd->variables.collation_database;
-    /* Cleanup the fields list. We do not want to create existing fields. */
-    fields.delete_elements();
-    if (real_alter_table(thd, table_list->db, table_list->real_name,
-			 &create_info, table_list, table,
-			 fields, keys, drop, alter, 0, (ORDER*)0,
-			 ALTER_ADD_INDEX, DUP_ERROR))
-      /* Don't need to free((gptr) key_info_buffer);*/
-      DBUG_RETURN(-1);
-  }
-  else
-  {
-    if (table->file->add_index(table, key_info_buffer, key_count)||
-        build_table_path(path, sizeof(path), table_list->db,
-                         (lower_case_table_names == 2) ?
-                         table_list->alias : table_list->real_name,
-                         reg_ext) == 0 ||
-	mysql_create_frm(thd, path, &create_info,
-			 fields, key_count, key_info_buffer, table->file))
-      /* don't need to free((gptr) key_info_buffer);*/
-      DBUG_RETURN(-1);
-  }
-  /* don't need to free((gptr) key_info_buffer);*/
-  DBUG_RETURN(0);
-}
-
-
-int mysql_drop_indexes(THD *thd, TABLE_LIST *table_list,
-		       List<Alter_drop> &drop)
-{
-  List<create_field> fields;
-  List<Key>	     keys;
-  List<Alter_column> alter;
-  HA_CREATE_INFO     create_info;
-  uint		     idx;
-  uint		     db_options;
-  uint		     key_count;
-  uint		     *key_numbers;
-  TABLE		     *table;
-  Field		     **f_ptr;
-  KEY		     *key_info;
-  KEY		     *key_info_buffer;
-  char		     path[FN_REFLEN];
-  DBUG_ENTER("mysql_drop_index");
-
-  /*
-    Try to use online generation of index.
-    This requires that all indexes can be created online.
-    Otherwise, the old alter table procedure is executed.
-
-    Open the table to have access to the correct table handler.
-  */
-  if (!(table=open_ltable(thd,table_list,TL_WRITE_ALLOW_READ)))
-    DBUG_RETURN(-1);
-
-  /*
-    The drop_index method takes an array of key numbers.
-    It cannot get more entries than keys in the table.
-  */
-  key_numbers= (uint*) thd->alloc(sizeof(uint*)*table->keys);
-  key_count= 0;
-
-  /*
-    Get the number of each key and check if it can be created online.
-  */
-  List_iterator<Alter_drop> drop_it(drop);
-  Alter_drop *drop_key;
-  while ((drop_key= drop_it++))
-  {
-    /* Find the key in the table. */
-    key_info=table->key_info;
-    for (idx=0; idx< table->keys; idx++, key_info++)
-    {
-      if (!my_strcasecmp(system_charset_info, key_info->name, drop_key->name))
-	break;
-    }
-    if (idx>= table->keys)
-    {
-      my_error(ER_CANT_DROP_FIELD_OR_KEY, MYF(0), drop_key->name);
-      /*don't need to free((gptr) key_numbers);*/
-      DBUG_RETURN(-1);
-    }
-    /*
-      Check if the key can be generated with the add_index method.
-      If anyone cannot, then take the old way.
-    */
-    DBUG_PRINT("info", ("dropping index %s", table->key_info[idx].name));
-    if (!(table->file->index_ddl_flags(table->key_info+idx)&
-	  (HA_DDL_ONLINE| HA_DDL_WITH_LOCK)))
-      break ;
-    key_numbers[key_count++]= idx;
-  }
-
-  bzero((char*) &create_info,sizeof(create_info));
-  create_info.db_type=DB_TYPE_DEFAULT;
-  create_info.default_table_charset= thd->variables.collation_database;
-
-  if ((drop_key)|| (drop.elements<= 0))
-  {
-    if (real_alter_table(thd, table_list->db, table_list->real_name,
-			 &create_info, table_list, table,
-			 fields, keys, drop, alter, 0, (ORDER*)0,
-			 ALTER_DROP_INDEX, DUP_ERROR))
-      /*don't need to free((gptr) key_numbers);*/
-      DBUG_RETURN(-1);
-  }
-  else
-  {
-    db_options= 0;
-    if (table->file->drop_index(table, key_numbers, key_count)||
-	mysql_prepare_table(thd, &create_info, fields,
-			    keys, /*tmp_table*/ 0, db_options, table->file,
-			    key_info_buffer, key_count,
-			    /*select_field_count*/ 0)||
-        build_table_path(path, sizeof(path), table_list->db,
-                         (lower_case_table_names == 2) ?
-                         table_list->alias : table_list->real_name,
-                         reg_ext) == 0 ||
-	mysql_create_frm(thd, path, &create_info,
-			 fields, key_count, key_info_buffer, table->file))
-      /*don't need to free((gptr) key_numbers);*/
-      DBUG_RETURN(-1);
-  }
-
-  /*don't need to free((gptr) key_numbers);*/
-  DBUG_RETURN(0);
-}
-#endif /* NOT_USED */
 
 
 /*
@@ -2887,15 +2694,21 @@ bool alter_table_manage_keys(TABLE *table, int indexes_were_disabled,
 
 /*
   Alter table
+
+
+  NOTE
+    The structures passed as 'create_info' and 'alter_info' parameters may
+    be modified by this function. It is responsibility of the caller to make
+    a copy of create_info in order to provide correct execution in prepared
+    statements/stored routines.
 */
 
 int mysql_alter_table(THD *thd,char *new_db, char *new_name,
 		      HA_CREATE_INFO *create_info,
 		      TABLE_LIST *table_list,
-		      List<create_field> &fields, List<Key> &keys,
+                      Alter_info *alter_info,
 		      uint order_num, ORDER *order,
-		      enum enum_duplicates handle_duplicates, bool ignore,
-		      ALTER_INFO *alter_info, bool do_send_ok)
+		      enum enum_duplicates handle_duplicates, bool ignore)
 {
   TABLE *table,*new_table;
   int error;
@@ -3064,7 +2877,6 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
 	Query_log_event qinfo(thd, thd->query, thd->query_length, 0, FALSE);
 	mysql_bin_log.write(&qinfo);
       }
-      if (do_send_ok)
       send_ok(thd);
     }
     else if (error > 0)
@@ -3091,10 +2903,9 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
 
   restore_record(table,default_values);		// Empty record for DEFAULT
   List_iterator<Alter_drop> drop_it(alter_info->drop_list);
-  List_iterator<create_field> def_it(fields);
+  List_iterator<create_field> def_it(alter_info->create_list);
   List_iterator<Alter_column> alter_it(alter_info->alter_list);
-  List<create_field> create_list;		// Add new fields here
-  List<Key> key_list;				// Add new keys here
+  Alter_info new_info;                   // Add new columns and indexes here
   create_field *def;
 
   /*
@@ -3140,13 +2951,13 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
       def->field=field;
       if (!def->after)
       {
-	create_list.push_back(def);
+	new_info.create_list.push_back(def);
 	def_it.remove();
       }
     }
     else
     {						// Use old field value
-      create_list.push_back(def=new create_field(field,field));
+      new_info.create_list.push_back(def= new create_field(field, field));
       alter_it.rewind();			// Change default if ALTER
       Alter_column *alter;
       while ((alter=alter_it++))
@@ -3167,7 +2978,7 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
     }
   }
   def_it.rewind();
-  List_iterator<create_field> find_it(create_list);
+  List_iterator<create_field> find_it(new_info.create_list);
   while ((def=def_it++))			// Add new columns
   {
     if (def->change && ! def->field)
@@ -3176,9 +2987,9 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
       DBUG_RETURN(-1);
     }
     if (!def->after)
-      create_list.push_back(def);
+      new_info.create_list.push_back(def);
     else if (def->after == first_keyword)
-      create_list.push_front(def);
+      new_info.create_list.push_front(def);
     else
     {
       create_field *find;
@@ -3202,7 +3013,7 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
 	     table_name);
     DBUG_RETURN(-1);
   }
-  if (!create_list.elements)
+  if (!new_info.create_list.elements)
   {
     my_error(ER_CANT_REMOVE_ALL_FIELDS,MYF(0));
     DBUG_RETURN(-1);
@@ -3213,8 +3024,8 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
     for which some fields exists.
   */
 
-  List_iterator<Key> key_it(keys);
-  List_iterator<create_field> field_it(create_list);
+  List_iterator<Key> key_it(alter_info->key_list);
+  List_iterator<create_field> field_it(new_info.create_list);
   List<key_part_spec> key_parts;
 
   KEY *key_info=table->key_info;
@@ -3272,24 +3083,37 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
 					    key_part_length));
     }
     if (key_parts.elements)
-      key_list.push_back(new Key(key_info->flags & HA_SPATIAL ? Key::SPATIAL :
-				 (key_info->flags & HA_NOSAME ?
-				 (!my_strcasecmp(system_charset_info,
-						 key_name, primary_key_name) ?
-				  Key::PRIMARY	: Key::UNIQUE) :
-				  (key_info->flags & HA_FULLTEXT ?
-				   Key::FULLTEXT : Key::MULTIPLE)),
-				 key_name,
+    {
+      Key *key;
+      enum Key::Keytype key_type;
+
+      if (key_info->flags & HA_SPATIAL)
+        key_type= Key::SPATIAL;
+      else if (key_info->flags & HA_NOSAME)
+      {
+        if (! my_strcasecmp(system_charset_info, key_name, primary_key_name))
+          key_type= Key::PRIMARY;
+        else
+          key_type= Key::UNIQUE;
+      }
+      else if (key_info->flags & HA_FULLTEXT)
+        key_type= Key::FULLTEXT;
+      else
+        key_type= Key::MULTIPLE;
+
+      key= new Key(key_type, key_name,
                    key_info->algorithm,
                    test(key_info->flags & HA_GENERATED_KEY),
-				 key_parts));
+                   key_parts);
+      new_info.key_list.push_back(key);
+    }
   }
   {
     Key *key;
     while ((key=key_it++))			// Add new keys
     {
       if (key->type != Key::FOREIGN_KEY)
-	key_list.push_back(key);
+        new_info.key_list.push_back(key);
       if (key->name &&
 	  !my_strcasecmp(system_charset_info,key->name,primary_key_name))
       {
@@ -3393,7 +3217,7 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
     /* We don't log the statement, it will be logged later. */
     tmp_disable_binlog(thd);
     error= mysql_create_table(thd, new_db, tmp_name,
-                              create_info,create_list,key_list,1,0);
+                              create_info, &new_info, 1, 0);
     reenable_binlog(thd);
     if (error)
       DBUG_RETURN(error);
@@ -3422,7 +3246,7 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
   next_insert_id=thd->next_insert_id;		// Remember for loggin
   copied=deleted=0;
   if (!new_table->is_view)
-    error=copy_data_between_tables(table,new_table,create_list,
+    error= copy_data_between_tables(table, new_table, new_info.create_list,
                                     handle_duplicates, ignore,
                                     order_num, order, &copied, &deleted,
                                     alter_info->keys_onoff);
@@ -3637,8 +3461,7 @@ end_temporary:
   my_snprintf(tmp_name, sizeof(tmp_name), ER(ER_INSERT_INFO),
 	      (ulong) (copied + deleted), (ulong) deleted,
 	      (ulong) thd->cuted_fields);
-  if (do_send_ok)
-    send_ok(thd,copied+deleted,0L,tmp_name);
+  send_ok(thd, copied + deleted, 0L, tmp_name);
   thd->some_tables_deleted=0;
   DBUG_RETURN(0);
 
@@ -3828,30 +3651,26 @@ copy_data_between_tables(TABLE *from,TABLE *to,
     mysql_recreate_table()
     thd			Thread handler
     tables		Tables to recreate
-    do_send_ok          If we should send_ok() or leave it to caller
 
  RETURN
     Like mysql_alter_table().
 */
-int mysql_recreate_table(THD *thd, TABLE_LIST *table_list,
-                         bool do_send_ok)
+int mysql_recreate_table(THD *thd, TABLE_LIST *table_list)
 {
-  DBUG_ENTER("mysql_recreate_table");
   LEX *lex= thd->lex;
   HA_CREATE_INFO create_info;
-  lex->create_list.empty();
-  lex->key_list.empty();
-  lex->col_list.empty();
-  lex->alter_info.reset();
-  lex->alter_info.is_simple= 0;                 // Force full recreate
+  Alter_info alter_info;
+
+  DBUG_ENTER("mysql_recreate_table");
+
   bzero((char*) &create_info,sizeof(create_info));
   create_info.db_type=DB_TYPE_DEFAULT;
   create_info.row_type=ROW_TYPE_DEFAULT;
   create_info.default_table_charset=default_charset_info;
+  alter_info.is_simple= 0;                 // Force full recreate
   DBUG_RETURN(mysql_alter_table(thd, NullS, NullS, &create_info,
-                                table_list, lex->create_list,
-                                lex->key_list, 0, (ORDER *) 0,
-                                DUP_ERROR, 0, &lex->alter_info, do_send_ok));
+                                table_list, &alter_info,
+                                0, (ORDER *) 0, DUP_ERROR, 0));
 }
 
 

sql/sql_yacc.yy

@@ -1021,8 +1021,7 @@ create:
 						  TL_READ_NO_INSERT:
 						  TL_READ)))
 	    YYABORT;
-	  lex->create_list.empty();
-	  lex->key_list.empty();
+          lex->alter_info.reset();
 	  lex->col_list.empty();
 	  lex->change=NullS;
 	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
@@ -1040,16 +1039,18 @@ create:
 	    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->alter_info.reset();
+            lex->alter_info.is_simple= 0;
+            lex->alter_info.flags= ALTER_ADD_INDEX;
 	    lex->col_list.empty();
 	    lex->change=NullS;
 	  }
 	   '(' key_list ')'
 	  {
 	    LEX *lex=Lex;
+            Key *key= new Key($2, $4.str, $5, 0, lex->col_list);
 
-	    lex->key_list.push_back(new Key($2,$4.str, $5, 0, lex->col_list));
+            lex->alter_info.key_list.push_back(key);
 	    lex->col_list.empty();
 	  }
 	| CREATE DATABASE opt_if_not_exists ident
@@ -1305,29 +1306,34 @@ key_def:
 	key_type opt_ident key_alg '(' key_list ')'
 	  {
 	    LEX *lex=Lex;
-	    lex->key_list.push_back(new Key($1,$2, $3, 0, lex->col_list));
+            Key *key= new Key($1, $2, $3, 0, lex->col_list);
+            lex->alter_info.key_list.push_back(key);
+
 	    lex->col_list.empty();		/* Alloced by sql_alloc */
 	  }
 	| opt_constraint constraint_key_type opt_ident key_alg '(' key_list ')'
 	  {
 	    LEX *lex=Lex;
 	    const char *key_name= $3 ? $3:$1;
-	    lex->key_list.push_back(new Key($2, key_name, $4, 0,
-				    lex->col_list));
+            Key *key= new Key($2, key_name, $4, 0, lex->col_list);
+            lex->alter_info.key_list.push_back(key);
 	    lex->col_list.empty();		/* Alloced by sql_alloc */
 	  }
 	| opt_constraint FOREIGN KEY_SYM opt_ident '(' key_list ')' references
 	  {
 	    LEX *lex=Lex;
-	    lex->key_list.push_back(new foreign_key($4 ? $4:$1, lex->col_list,
+            const char *key_name= $4 ? $4 : $1;
+            Key *key= new foreign_key(key_name, lex->col_list,
                                       $8,
                                       lex->ref_list,
                                       lex->fk_delete_opt,
                                       lex->fk_update_opt,
-				    lex->fk_match_option));
-	    lex->key_list.push_back(new Key(Key::MULTIPLE, $4 ? $4 : $1,
+                                      lex->fk_match_option);
+            lex->alter_info.key_list.push_back(key);
+            key= new Key(Key::MULTIPLE, key_name,
                          HA_KEY_ALG_UNDEF, 1,
-					    lex->col_list));
+                         lex->col_list);
+            lex->alter_info.key_list.push_back(key);
 	    lex->col_list.empty();		/* Alloced by sql_alloc */
 	  }
 	| constraint opt_check_constraint
@@ -1850,8 +1856,6 @@ alter:
 	  if (!lex->select_lex.add_table_to_list(thd, $4, NULL,
 						 TL_OPTION_UPDATING))
 	    YYABORT;
-	  lex->create_list.empty();
-	  lex->key_list.empty();
 	  lex->col_list.empty();
           lex->select_lex.init_order();
 	  lex->select_lex.db=lex->name=0;
@@ -1860,8 +1864,6 @@ alter:
 	  lex->create_info.default_table_charset= NULL;
 	  lex->create_info.row_type= ROW_TYPE_NOT_USED;
           lex->alter_info.reset();
-	  lex->alter_info.is_simple= 1;
-	  lex->alter_info.flags= 0;
 	}
 	alter_list
 	{}
@@ -4030,7 +4032,9 @@ drop:
 	  {
 	     LEX *lex=Lex;
 	     lex->sql_command= SQLCOM_DROP_INDEX;
-	     lex->alter_info.drop_list.empty();
+             lex->alter_info.reset();
+             lex->alter_info.is_simple= 0;
+             lex->alter_info.flags= ALTER_DROP_INDEX;
 	     lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
                                                                 $3.str));
 	     if (!lex->current_select->add_table_to_list(lex->thd, $5, NULL,