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Commit 820a2b8c authored by unknown's avatar unknown
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Merge whalegate.ndb.mysql.com:/home/tomas/mysql-5.0 

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb-merge
parents 5a001065 a87365e5
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Showing with 576 additions and 27 deletions
.bzrignore
View file @ 820a2b8c
......@@ -1345,3 +1345,8 @@ zlib/*.vcproj
debian/control
debian/defs.mk
include/abi_check
support-files/mysqld_multi.server
tests/bug25714
cscope.in.out
cscope.out
cscope.po.out
client/mysqldump.c
View file @ 820a2b8c
......@@ -2898,7 +2898,7 @@ int init_dumping_tables(char *qdatabase)
/* Old server version, dump generic CREATE DATABASE */
if (opt_drop_database)
fprintf(md_result_file,
"\n/*!40000 DROP DATABASE IF EXISTS %s;*/\n",
"\n/*!40000 DROP DATABASE IF EXISTS %s*/;\n",
qdatabase);
fprintf(md_result_file,
"\nCREATE DATABASE /*!32312 IF NOT EXISTS*/ %s;\n",
......
config/ac-macros/misc.m4
View file @ 820a2b8c
......@@ -773,11 +773,8 @@ case $CXX_VERSION in
ARFLAGS="-xar -o"
;;
*)
if test -z "$AR"
then
AC_CHECK_PROG([AR], [ar], [ar])
fi
if test -z "$AR"
if test -z "$AR" || test "$AR" = "false"
then
AC_MSG_ERROR([You need ar to build the library])
fi
......
mysql-test/r/delete.result
View file @ 820a2b8c
......@@ -183,6 +183,17 @@ select @a;
@a
1
drop table t1;
CREATE TABLE t1 (
`date` date ,
`time` time ,
`seq` int(10) unsigned NOT NULL auto_increment,
PRIMARY KEY (`seq`),
KEY `seq` (`seq`),
KEY `time` (`time`),
KEY `date` (`date`)
);
DELETE FROM t1 ORDER BY date ASC, time ASC LIMIT 1;
drop table t1;
End of 4.1 tests
CREATE TABLE t1 (a int not null,b int not null);
CREATE TABLE t2 (a int not null, b int not null, primary key (a,b));
......@@ -223,3 +234,40 @@ ERROR 42S22: Unknown column 't2.x' in 'order clause'
DELETE FROM t1 ORDER BY (SELECT x);
ERROR 42S22: Unknown column 'x' in 'field list'
DROP TABLE t1;
CREATE TABLE t1 (
a INT
);
CREATE TABLE t2 (
a INT
);
CREATE DATABASE db1;
CREATE TABLE db1.t1 (
a INT
);
INSERT INTO db1.t1 (a) SELECT * FROM t1;
CREATE DATABASE db2;
CREATE TABLE db2.t1 (
a INT
);
INSERT INTO db2.t1 (a) SELECT * FROM t2;
DELETE FROM t1 alias USING t1, t2 alias WHERE t1.a = alias.a;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'alias USING t1, t2 alias WHERE t1.a = alias.a' at line 1
DELETE FROM alias USING t1, t2 alias WHERE t1.a = alias.a;
DELETE FROM t1, alias USING t1, t2 alias WHERE t1.a = alias.a;
DELETE FROM t1, t2 USING t1, t2 alias WHERE t1.a = alias.a;
ERROR 42S02: Unknown table 't2' in MULTI DELETE
DELETE FROM db1.t1 alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a' at line 1
DELETE FROM alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
ERROR 42S02: Unknown table 'alias' in MULTI DELETE
DELETE FROM db2.alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
DELETE FROM t1 USING t1 WHERE a = 1;
SELECT * FROM t1;
a
DELETE FROM t1 alias USING t1 alias WHERE a = 2;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'alias USING t1 alias WHERE a = 2' at line 1
SELECT * FROM t1;
a
DROP TABLE t1, t2;
DROP DATABASE db1;
DROP DATABASE db2;
mysql-test/r/distinct.result
View file @ 820a2b8c
......@@ -526,10 +526,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 3 Using index
EXPLAIN SELECT a,b FROM t1 GROUP BY a,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
EXPLAIN SELECT DISTINCT a,b FROM t1 GROUP BY a,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
CREATE TABLE t2(a INT, b INT NOT NULL, c INT NOT NULL, d INT,
PRIMARY KEY (a,b));
INSERT INTO t2 VALUES (1,1,1,50), (1,2,3,40), (2,1,3,4);
......@@ -554,7 +554,7 @@ id select_type table type possible_keys key key_len ref rows Extra
CREATE UNIQUE INDEX c_b_unq ON t2 (c,b);
EXPLAIN SELECT DISTINCT a,b,d FROM t2 GROUP BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using filesort
DROP TABLE t1,t2;
create table t1 (id int, dsc varchar(50));
insert into t1 values (1, "line number one"), (2, "line number two"), (3, "line number three");
......
mysql-test/r/group_by.result
View file @ 820a2b8c
......@@ -1064,3 +1064,52 @@ select t1.f1,t.* from t1, t1 t group by 1;
ERROR 42000: 'test.t.f1' isn't in GROUP BY
drop table t1;
SET SQL_MODE = '';
CREATE TABLE t1(
a INT,
b INT NOT NULL,
c INT NOT NULL,
d INT,
UNIQUE KEY (c,b)
);
INSERT INTO t1 VALUES (1,1,1,50), (1,2,3,40), (2,1,3,4);
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 GROUP BY c,b,d;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
c b d
1 1 50
3 2 40
3 1 4
EXPLAIN SELECT c,b,d FROM t1 ORDER BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 ORDER BY c,b,d;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 GROUP BY c,b;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b FROM t1 GROUP BY c,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL c 8 NULL 3 Using index
SELECT c,b FROM t1 GROUP BY c,b;
c b
1 1
3 1
3 2
DROP TABLE t1;
mysql-test/r/innodb_mysql.result
View file @ 820a2b8c
......@@ -1065,4 +1065,53 @@ a b
ROLLBACK;
ROLLBACK;
DROP TABLE t1;
CREATE TABLE t1(
a INT,
b INT NOT NULL,
c INT NOT NULL,
d INT,
UNIQUE KEY (c,b)
) engine=innodb;
INSERT INTO t1 VALUES (1,1,1,50), (1,2,3,40), (2,1,3,4);
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 GROUP BY c,b,d;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 ORDER BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 ORDER BY c,b,d;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL c 8 NULL 3
SELECT c,b,d FROM t1 GROUP BY c,b;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b FROM t1 GROUP BY c,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL c 8 NULL 3 Using index
SELECT c,b FROM t1 GROUP BY c,b;
c b
1 1
3 1
3 2
DROP TABLE t1;
End of 5.0 tests
mysql-test/r/mysqldump-compat.result 0 → 100644
View file @ 820a2b8c
CREATE DATABASE mysqldump_30126;
USE mysqldump_30126;
CREATE TABLE t1 (c1 int);
DROP DATABASE mysqldump_30126;
mysql-test/r/sp.result
View file @ 820a2b8c
......@@ -6315,6 +6315,28 @@ CALL p1();
NULL
SET NAMES default;
DROP PROCEDURE p1;
create function f1()
returns int(11)
not deterministic
contains sql
sql security definer
comment ''
begin
declare x int(11);
set x=-1;
return x;
end|
create view v1 as select 1 as one, f1() as days;
show create view test.v1;
View Create View
v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `test`.`v1` AS select 1 AS `one`,`f1`() AS `days`
select column_name from information_schema.columns
where table_name='v1' and table_schema='test';
column_name
one
days
drop view v1;
drop function f1;
# Bug#13675.
......
mysql-test/r/status.result
View file @ 820a2b8c
......@@ -43,3 +43,51 @@ SHOW STATUS LIKE 'max_used_connections';
Variable_name Value
Max_used_connections 4
SET GLOBAL thread_cache_size=@save_thread_cache_size;
CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1), (2);
SELECT a FROM t1 LIMIT 1;
a
1
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 2.402418
EXPLAIN SELECT a FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 2.402418
SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
a
1
2
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
EXPLAIN SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 UNION t1 ALL NULL NULL NULL NULL 2
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL Using filesort
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
SELECT a IN (SELECT a FROM t1) FROM t1 LIMIT 1;
a IN (SELECT a FROM t1)
1
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
SELECT (SELECT a FROM t1 LIMIT 1) x FROM t1 LIMIT 1;
x
1
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
SELECT * FROM t1 a, t1 b LIMIT 1;
a a
1 1
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 4.805836
DROP TABLE t1;
mysql-test/r/type_bit.result
View file @ 820a2b8c
......@@ -642,4 +642,19 @@ b+0 COUNT(DISTINCT a)
1 1
3 2
DROP TABLE t1;
CREATE TABLE t1 (b BIT);
INSERT INTO t1 (b) VALUES (1), (0);
SELECT DISTINCT b FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def test t1 t1 b b 16 1 1 Y 32 0 63
b
#
#
SELECT b FROM t1 GROUP BY b;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def test t1 t1 b b 16 1 1 Y 32 0 63
b
#
#
DROP TABLE t1;
End of 5.0 tests
mysql-test/t/delete.test
View file @ 820a2b8c
......@@ -173,8 +173,20 @@ delete from t1 where (@a:= f1) order by f1 limit 1;
select @a;
drop table t1;
# BUG#30385 "Server crash when deleting with order by and limit"
CREATE TABLE t1 (
`date` date ,
`time` time ,
`seq` int(10) unsigned NOT NULL auto_increment,
PRIMARY KEY (`seq`),
KEY `seq` (`seq`),
KEY `time` (`time`),
KEY `date` (`date`)
);
DELETE FROM t1 ORDER BY date ASC, time ASC LIMIT 1;
drop table t1;
--echo End of 4.1 tests
# End of 4.1 tests
#
# Test of multi-delete where we are not scanning the first table
......@@ -221,3 +233,47 @@ DELETE FROM t1 ORDER BY t2.x;
DELETE FROM t1 ORDER BY (SELECT x);
DROP TABLE t1;
#
# Bug #30234: Unexpected behavior using DELETE with AS and USING
# '
CREATE TABLE t1 (
a INT
);
CREATE TABLE t2 (
a INT
);
CREATE DATABASE db1;
CREATE TABLE db1.t1 (
a INT
);
INSERT INTO db1.t1 (a) SELECT * FROM t1;
CREATE DATABASE db2;
CREATE TABLE db2.t1 (
a INT
);
INSERT INTO db2.t1 (a) SELECT * FROM t2;
--error ER_PARSE_ERROR
DELETE FROM t1 alias USING t1, t2 alias WHERE t1.a = alias.a;
DELETE FROM alias USING t1, t2 alias WHERE t1.a = alias.a;
DELETE FROM t1, alias USING t1, t2 alias WHERE t1.a = alias.a;
--error ER_UNKNOWN_TABLE
DELETE FROM t1, t2 USING t1, t2 alias WHERE t1.a = alias.a;
--error ER_PARSE_ERROR
DELETE FROM db1.t1 alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
--error ER_UNKNOWN_TABLE
DELETE FROM alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
DELETE FROM db2.alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
DELETE FROM t1 USING t1 WHERE a = 1;
SELECT * FROM t1;
--error ER_PARSE_ERROR
DELETE FROM t1 alias USING t1 alias WHERE a = 2;
SELECT * FROM t1;
DROP TABLE t1, t2;
DROP DATABASE db1;
DROP DATABASE db2;
mysql-test/t/group_by.test
View file @ 820a2b8c
......@@ -788,3 +788,30 @@ select * from t1 group by f1, f2;
select t1.f1,t.* from t1, t1 t group by 1;
drop table t1;
SET SQL_MODE = '';
#
# Bug#30596: GROUP BY optimization gives wrong result order
#
CREATE TABLE t1(
a INT,
b INT NOT NULL,
c INT NOT NULL,
d INT,
UNIQUE KEY (c,b)
);
INSERT INTO t1 VALUES (1,1,1,50), (1,2,3,40), (2,1,3,4);
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d;
SELECT c,b,d FROM t1 GROUP BY c,b,d;
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
EXPLAIN SELECT c,b,d FROM t1 ORDER BY c,b,d;
SELECT c,b,d FROM t1 ORDER BY c,b,d;
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b;
SELECT c,b,d FROM t1 GROUP BY c,b;
EXPLAIN SELECT c,b FROM t1 GROUP BY c,b;
SELECT c,b FROM t1 GROUP BY c,b;
DROP TABLE t1;
mysql-test/t/innodb_mysql.test
View file @ 820a2b8c
......@@ -910,4 +910,31 @@ ROLLBACK;
ROLLBACK;
DROP TABLE t1;
#
# Bug#30596: GROUP BY optimization gives wrong result order
#
CREATE TABLE t1(
a INT,
b INT NOT NULL,
c INT NOT NULL,
d INT,
UNIQUE KEY (c,b)
) engine=innodb;
INSERT INTO t1 VALUES (1,1,1,50), (1,2,3,40), (2,1,3,4);
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d;
SELECT c,b,d FROM t1 GROUP BY c,b,d;
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
EXPLAIN SELECT c,b,d FROM t1 ORDER BY c,b,d;
SELECT c,b,d FROM t1 ORDER BY c,b,d;
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b;
SELECT c,b,d FROM t1 GROUP BY c,b;
EXPLAIN SELECT c,b FROM t1 GROUP BY c,b;
SELECT c,b FROM t1 GROUP BY c,b;
DROP TABLE t1;
--echo End of 5.0 tests
mysql-test/t/mysqldump-compat.opt 0 → 100644
View file @ 820a2b8c
--loose-debug=d,4x_server_emul
mysql-test/t/mysqldump-compat.test 0 → 100644
View file @ 820a2b8c
# Embedded server doesn't support external clients
--source include/not_embedded.inc
#
# Bug #30126: semicolon before closing */ in /*!... CREATE DATABASE ;*/
#
CREATE DATABASE mysqldump_30126;
USE mysqldump_30126;
CREATE TABLE t1 (c1 int);
--exec $MYSQL_DUMP --add-drop-database mysqldump_30126 > $MYSQLTEST_VARDIR/tmp/bug30126.sql
--exec $MYSQL mysqldump_30126 < $MYSQLTEST_VARDIR/tmp/bug30126.sql
DROP DATABASE mysqldump_30126;
mysql-test/t/sp.test
View file @ 820a2b8c
......@@ -7300,6 +7300,39 @@ CALL p1();
SET NAMES default;
DROP PROCEDURE p1;
#
# Bug#29408 Cannot find view in columns table if the selection contains a function
#
delimiter |;
create function f1()
returns int(11)
not deterministic
contains sql
sql security definer
comment ''
begin
declare x int(11);
set x=-1;
return x;
end|
delimiter ;|
create view v1 as select 1 as one, f1() as days;
connect (bug29408, localhost, root,,*NO-ONE*);
connection bug29408;
show create view test.v1;
select column_name from information_schema.columns
where table_name='v1' and table_schema='test';
connection default;
disconnect bug29408;
drop view v1;
drop function f1;
#
# Bug#13675: DATETIME/DATE type in store proc param seems to be converted as
# varbinary
......
mysql-test/t/status.test
View file @ 820a2b8c
......@@ -139,4 +139,36 @@ disconnect con3;
disconnect con2;
disconnect con1;
#
# Bug #30377: EXPLAIN loses last_query_cost when used with UNION
#
CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1), (2);
SELECT a FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
EXPLAIN SELECT a FROM t1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
SHOW SESSION STATUS LIKE 'Last_query_cost';
EXPLAIN SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
SHOW SESSION STATUS LIKE 'Last_query_cost';
SELECT a IN (SELECT a FROM t1) FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
SELECT (SELECT a FROM t1 LIMIT 1) x FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
SELECT * FROM t1 a, t1 b LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
DROP TABLE t1;
# End of 5.0 tests
mysql-test/t/type_bit.test
View file @ 820a2b8c
......@@ -291,4 +291,17 @@ INSERT INTO t1 (b, a) VALUES (1, 1), (3, 2), (0, 3), (3, 4);
SELECT b+0, COUNT(DISTINCT a) FROM t1 GROUP BY b;
DROP TABLE t1;
#
# Bug#30245: A wrong type of a BIT field is reported when grouped by it.
#
CREATE TABLE t1 (b BIT);
INSERT INTO t1 (b) VALUES (1), (0);
--enable_metadata
--replace_column 1 #
SELECT DISTINCT b FROM t1;
--replace_column 1 #
SELECT b FROM t1 GROUP BY b;
--disable_metadata
DROP TABLE t1;
--echo End of 5.0 tests
sql/opt_range.cc
View file @ 820a2b8c
......@@ -1597,10 +1597,10 @@ SEL_ARG *SEL_ARG::clone_tree(PARAM *param)
the UPDATE/DELETE code will work:
* index can only be scanned in forward direction
* HA_EXTRA_KEYREAD will not be used
Perhaps these assumptions could be relaxed
Perhaps these assumptions could be relaxed.
RETURN
index number
Number of the index that produces the required ordering in the cheapest way
MAX_KEY if no such index was found.
*/
......@@ -1619,6 +1619,7 @@ uint get_index_for_order(TABLE *table, ORDER *order, ha_rows limit)
if (!(table->keys_in_use_for_query.is_set(idx)))
continue;
KEY_PART_INFO *keyinfo= table->key_info[idx].key_part;
uint n_parts= table->key_info[idx].key_parts;
uint partno= 0;
/*
......@@ -1628,7 +1629,7 @@ uint get_index_for_order(TABLE *table, ORDER *order, ha_rows limit)
*/
if (!(table->file->index_flags(idx, 0, 1) & HA_READ_ORDER))
continue;
for (ord= order; ord; ord= ord->next, partno++)
for (ord= order; ord && partno < n_parts; ord= ord->next, partno++)
{
Item *item= order->item[0];
if (!(item->type() == Item::FIELD_ITEM &&
......
sql/sql_lex.h
View file @ 820a2b8c
......@@ -1257,6 +1257,28 @@ typedef struct st_lex : public Query_tables_list
void reset_n_backup_query_tables_list(Query_tables_list *backup);
void restore_backup_query_tables_list(Query_tables_list *backup);
/**
@brief check if the statement is a single-level join
@return result of the check
@retval TRUE The statement doesn't contain subqueries, unions and
stored procedure calls.
@retval FALSE There are subqueries, UNIONs or stored procedure calls.
*/
bool is_single_level_stmt()
{
/*
This check exploits the fact that the last added to all_select_list is
on its top. So select_lex (as the first added) will be at the tail
of the list.
*/
if (&select_lex == all_selects_list && !sroutines.records)
{
DBUG_ASSERT(!all_selects_list->next_select_in_list());
return TRUE;
}
return FALSE;
}
} LEX;
struct st_lex_local: public st_lex
......
sql/sql_parse.cc
View file @ 820a2b8c
......@@ -1864,7 +1864,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
statistic_increment(thd->status_var.com_stat[SQLCOM_SHOW_FIELDS],
&LOCK_status);
bzero((char*) &table_list,sizeof(table_list));
if (thd->copy_db_to(&table_list.db, 0))
if (thd->copy_db_to(&table_list.db, &table_list.db_length))
break;
pend= strend(packet);
thd->convert_string(&conv_name, system_charset_info,
......@@ -3990,6 +3990,8 @@ end_with_restore_list:
}
case SQLCOM_SHOW_CREATE_DB:
{
DBUG_EXECUTE_IF("4x_server_emul",
my_error(ER_UNKNOWN_ERROR, MYF(0)); goto error;);
if (!strip_sp(lex->name) || check_db_name(lex->name))
{
my_error(ER_WRONG_DB_NAME, MYF(0), lex->name);
......
sql/sql_select.cc
View file @ 820a2b8c
......@@ -189,6 +189,7 @@ static bool setup_new_fields(THD *thd, List<Item> &fields,
List<Item> &all_fields, ORDER *new_order);
static ORDER *create_distinct_group(THD *thd, Item **ref_pointer_array,
ORDER *order, List<Item> &fields,
List<Item> &all_fields,
bool *all_order_by_fields_used);
static bool test_if_subpart(ORDER *a,ORDER *b);
static TABLE *get_sort_by_table(ORDER *a,ORDER *b,TABLE_LIST *tables);
......@@ -537,6 +538,28 @@ JOIN::prepare(Item ***rref_pointer_array,
fix_inner_refs(thd, all_fields, select_lex, ref_pointer_array))
DBUG_RETURN(-1);
if (group_list)
{
/*
Because HEAP tables can't index BIT fields we need to use an
additional hidden field for grouping because later it will be
converted to a LONG field. Original field will remain of the
BIT type and will be returned to a client.
*/
for (ORDER *ord= group_list; ord; ord= ord->next)
{
if ((*ord->item)->type() == Item::FIELD_ITEM &&
(*ord->item)->field_type() == MYSQL_TYPE_BIT)
{
Item_field *field= new Item_field(thd, *(Item_field**)ord->item);
int el= all_fields.elements;
ref_pointer_array[el]= field;
all_fields.push_front(field);
ord->item= ref_pointer_array + el;
}
}
}
if (setup_ftfuncs(select_lex)) /* should be after having->fix_fields */
DBUG_RETURN(-1);
......@@ -1030,6 +1053,14 @@ JOIN::optimize()
find_field_in_order_list,
(void *) group_list))
{
/*
We have found that grouping can be removed since groups correspond to
only one row anyway, but we still have to guarantee correct result
order. The line below effectively rewrites the query from GROUP BY
<fields> to ORDER BY <fields>. One exception is if skip_sort_order is
set (see above), then we can simply skip GROUP BY.
*/
order= skip_sort_order ? 0 : group_list;
group_list= 0;
group= 0;
}
......@@ -1068,12 +1099,13 @@ JOIN::optimize()
if (order)
skip_sort_order= test_if_skip_sort_order(tab, order, select_limit, 1);
if ((group_list=create_distinct_group(thd, select_lex->ref_pointer_array,
order, fields_list,
order, fields_list, all_fields,
&all_order_fields_used)))
{
bool skip_group= (skip_sort_order &&
test_if_skip_sort_order(tab, group_list, select_limit,
1) != 0);
count_field_types(select_lex, &tmp_table_param, all_fields, 0);
if ((skip_group && all_order_fields_used) ||
select_limit == HA_POS_ERROR ||
(order && !skip_sort_order))
......@@ -4369,9 +4401,13 @@ choose_plan(JOIN *join, table_map join_tables)
/*
Store the cost of this query into a user variable
Don't update last_query_cost for 'show status' command
Don't update last_query_cost for 'show status' command.
Don't update last_query_cost for statements that are not "flat joins" :
i.e. they have subqueries, unions or call stored procedures.
TODO: calculate a correct cost for a query with subqueries and UNIONs.
*/
if (join->thd->lex->orig_sql_command != SQLCOM_SHOW_STATUS)
if (join->thd->lex->orig_sql_command != SQLCOM_SHOW_STATUS &&
join->thd->lex->is_single_level_stmt())
join->thd->status_var.last_query_cost= join->best_read;
DBUG_RETURN(FALSE);
}
......@@ -13630,10 +13666,11 @@ setup_new_fields(THD *thd, List<Item> &fields,
static ORDER *
create_distinct_group(THD *thd, Item **ref_pointer_array,
ORDER *order_list, List<Item> &fields,
List<Item> &all_fields,
bool *all_order_by_fields_used)
{
List_iterator<Item> li(fields);
Item *item;
Item *item, **orig_ref_pointer_array= ref_pointer_array;
ORDER *order,*group,**prev;
*all_order_by_fields_used= 1;
......@@ -13673,12 +13710,31 @@ create_distinct_group(THD *thd, Item **ref_pointer_array,
ORDER *ord=(ORDER*) thd->calloc(sizeof(ORDER));
if (!ord)
return 0;
if (item->type() == Item::FIELD_ITEM &&
item->field_type() == MYSQL_TYPE_BIT)
{
/*
Because HEAP tables can't index BIT fields we need to use an
additional hidden field for grouping because later it will be
converted to a LONG field. Original field will remain of the
BIT type and will be returned to a client.
*/
Item_field *new_item= new Item_field(thd, (Item_field*)item);
int el= all_fields.elements;
orig_ref_pointer_array[el]= new_item;
all_fields.push_front(new_item);
ord->item= orig_ref_pointer_array + el;
}
else
{
/*
We have here only field_list (not all_field_list), so we can use
simple indexing of ref_pointer_array (order in the array and in the
list are same)
*/
ord->item= ref_pointer_array;
}
ord->asc=1;
*prev=ord;
prev= &ord->next;
......
sql/sql_view.cc
View file @ 820a2b8c
......@@ -1008,8 +1008,19 @@ bool mysql_make_view(THD *thd, File_parser *parser, TABLE_LIST *table,
table->view= lex= thd->lex= (LEX*) new(thd->mem_root) st_lex_local;
{
char old_db_buf[NAME_LEN+1];
LEX_STRING old_db= { old_db_buf, sizeof(old_db_buf) };
bool dbchanged;
Lex_input_stream lip(thd, table->query.str, table->query.length);
thd->m_lip= &lip;
/*
Use view db name as thread default database, in order to ensure
that the view is parsed and prepared correctly.
*/
if ((result= sp_use_new_db(thd, table->view_db, &old_db, 1, &dbchanged)))
goto end;
lex_start(thd);
view_select= &lex->select_lex;
view_select->select_number= ++thd->select_number;
......@@ -1051,6 +1062,9 @@ bool mysql_make_view(THD *thd, File_parser *parser, TABLE_LIST *table,
thd->variables.character_set_client= save_cs;
thd->variables.sql_mode= save_mode;
if (dbchanged && mysql_change_db(thd, &old_db, TRUE))
goto err;
}
if (!res && !thd->is_fatal_error)
{
......
sql/sql_yacc.yy
View file @ 820a2b8c
......@@ -1162,7 +1162,8 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
field_opt_list opt_binary table_lock_list table_lock
ref_list opt_on_delete opt_on_delete_list opt_on_delete_item use
opt_delete_options opt_delete_option varchar nchar nvarchar
opt_outer table_list table_name opt_option opt_place
opt_outer table_list table_name table_alias_ref_list table_alias_ref
opt_option opt_place
opt_attribute opt_attribute_list attribute column_list column_list_id
opt_column_list grant_privileges grant_ident grant_list grant_option
object_privilege object_privilege_list user_list rename_list
......@@ -6553,6 +6554,20 @@ table_name:
}
;
table_alias_ref_list:
table_alias_ref
| table_alias_ref_list ',' table_alias_ref;
table_alias_ref:
table_ident
{
if (!Select->add_table_to_list(YYTHD, $1, NULL,
TL_OPTION_UPDATING | TL_OPTION_ALIAS,
Lex->lock_option ))
MYSQL_YYABORT;
}
;
if_exists:
/* empty */ { $$= 0; }
| IF EXISTS { $$= 1; }
......@@ -6823,7 +6838,7 @@ single_multi:
if (multi_delete_set_locks_and_link_aux_tables(Lex))
MYSQL_YYABORT;
}
| FROM table_wild_list
| FROM table_alias_ref_list
{ mysql_init_multi_delete(Lex); }
USING join_table_list where_clause
{
......
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