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Moving max/min optimization from prepare to optimization phase. MWL#148

Browse Source 
mysql-test/r/explain.result:
  fixed results (new item)
mysql-test/r/subselect.result:
  fixed results (new item)
mysql-test/r/subselect_no_mat.result:
  fixed results (new item)
mysql-test/r/subselect_no_opts.result:
  fixed results (new item)
mysql-test/r/subselect_no_semijoin.result:
  Fixed results (new item)
mysql-test/suite/pbxt/r/subselect.result:
  Fixed results (new item)
mysql-test/t/explain.test:
  Fixed results (correct behaviour)
sql/item_cmpfunc.cc:
  Pass through  for max/min
sql/item_subselect.cc:
  moving max/min
sql/item_subselect.h:
  moving max/min
sql/mysql_priv.h:
  new uncacheble flags added
sql/opt_subselect.cc:
  maxmin moved.
sql/opt_subselect.h:
  New function for maxmin.
sql/sql_class.h:
  debug code
sql/sql_lex.cc:
  Fixed flags.
  Limit setting fixed.
sql/sql_lex.h:
  2 new flags.
sql/sql_select.cc:
  Prepare divided on 2 function to be able recollect some info after transformation.
sql/sql_select.h:
  Prepare divided on 2 functions.
This commit is contained in:
Oleksandr Byelkin
2011-05-04 18:08:58 +03:00
parent 0278b06e6b
commit 7b797fe66d
18 changed files with 415 additions and 236 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
mysql-test/r/explain.result
View File

@@ -176,11 +176,15 @@ SELECT @@session.sql_mode INTO @old_sql_mode;
SET SESSION sql_mode='ONLY_FULL_GROUP_BY'; SET SESSION sql_mode='ONLY_FULL_GROUP_BY';
EXPLAIN EXTENDED SELECT 1 FROM t1 EXPLAIN EXTENDED SELECT 1 FROM t1
WHERE f1 > ALL( SELECT t.f1 FROM t1,t1 AS t ); WHERE f1 > ALL( SELECT t.f1 FROM t1,t1 AS t );
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found
2 SUBQUERY t system NULL NULL NULL NULL 0 0.00 const row not found
Warnings:
Note 1003 select 1 AS `1` from `test`.`t1` where 0
SHOW WARNINGS; SHOW WARNINGS;
Level Code Message Level Code Message
Error 1140 Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause Note 1003 select 1 AS `1` from `test`.`t1` where 0
Note 1003 select 1 AS `1` from `test`.`t1` where <not>(<exists>(...))
SET SESSION sql_mode=@old_sql_mode; SET SESSION sql_mode=@old_sql_mode;
DROP TABLE t1; DROP TABLE t1;
End of 5.0 tests. End of 5.0 tests.
@@ -272,12 +276,12 @@ PREPARE stmt FROM
EXECUTE stmt; EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY a system NULL NULL NULL NULL 1 Using filesort 2 SUBQUERY a system NULL NULL NULL NULL 1
2 SUBQUERY t1 fulltext f1 f1 0 1 Using where 2 SUBQUERY t1 fulltext f1 f1 0 1 Using where
EXECUTE stmt; EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY a system NULL NULL NULL NULL 1 Using filesort 2 SUBQUERY a system NULL NULL NULL NULL 1
2 SUBQUERY t1 fulltext f1 f1 0 1 Using where 2 SUBQUERY t1 fulltext f1 f1 0 1 Using where
DEALLOCATE PREPARE stmt; DEALLOCATE PREPARE stmt;
PREPARE stmt FROM PREPARE stmt FROM
@@ -288,12 +292,12 @@ PREPARE stmt FROM
EXECUTE stmt; EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY a system NULL NULL NULL NULL 1 Using filesort 2 SUBQUERY a system NULL NULL NULL NULL 1
2 SUBQUERY t1 fulltext f1 f1 0 1 Using where 2 SUBQUERY t1 fulltext f1 f1 0 1 Using where
EXECUTE stmt; EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY a system NULL NULL NULL NULL 1 Using filesort 2 SUBQUERY a system NULL NULL NULL NULL 1
2 SUBQUERY t1 fulltext f1 f1 0 1 Using where 2 SUBQUERY t1 fulltext f1 f1 0 1 Using where
DEALLOCATE PREPARE stmt; DEALLOCATE PREPARE stmt;
DROP TABLE t1; DROP TABLE t1;

22
mysql-test/r/subselect.result
View File

@@ -273,7 +273,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2); select * from t3 where a >= all (select b from t2);
a a
7 7
@@ -1503,7 +1503,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))))
select * from t3 where a >= some (select b from t2); select * from t3 where a >= some (select b from t2);
a a
explain extended select * from t3 where a >= some (select b from t2); explain extended select * from t3 where a >= some (select b from t2);
@@ -1511,7 +1511,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2 group by 1); select * from t3 where a >= all (select b from t2 group by 1);
a a
6 6
@@ -1522,7 +1522,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))))
select * from t3 where a >= some (select b from t2 group by 1); select * from t3 where a >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where a >= some (select b from t2 group by 1); explain extended select * from t3 where a >= some (select b from t2 group by 1);
@@ -1530,7 +1530,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))))
select * from t3 where NULL >= any (select b from t2); select * from t3 where NULL >= any (select b from t2);
a a
explain extended select * from t3 where NULL >= any (select b from t2); explain extended select * from t3 where NULL >= any (select b from t2);
@@ -1538,7 +1538,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(NULL) from `test`.`t2`))))
select * from t3 where NULL >= any (select b from t2 group by 1); select * from t3 where NULL >= any (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= any (select b from t2 group by 1); explain extended select * from t3 where NULL >= any (select b from t2 group by 1);
@@ -1546,7 +1546,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select NULL from `test`.`t2` group by 1))))
select * from t3 where NULL >= some (select b from t2); select * from t3 where NULL >= some (select b from t2);
a a
explain extended select * from t3 where NULL >= some (select b from t2); explain extended select * from t3 where NULL >= some (select b from t2);
@@ -1554,7 +1554,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(NULL) from `test`.`t2`))))
select * from t3 where NULL >= some (select b from t2 group by 1); select * from t3 where NULL >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= some (select b from t2 group by 1); explain extended select * from t3 where NULL >= some (select b from t2 group by 1);
@@ -1562,7 +1562,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select NULL from `test`.`t2` group by 1))))
insert into t2 values (2,2), (2,1), (3,3), (3,1); insert into t2 values (2,2), (2,1), (3,3), (3,1);
select * from t3 where a > all (select max(b) from t2 group by a); select * from t3 where a > all (select max(b) from t2 group by a);
a a
@@ -1573,7 +1573,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))))
drop table t2, t3; drop table t2, t3;
CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ; CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ;
INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now()); INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now());
@@ -1624,7 +1624,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION t1 system NULL NULL NULL NULL 1 100.00 3 UNION t1 system NULL NULL NULL NULL 1 100.00
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings: Warnings:
Note 1003 select 'e' AS `s1` from `test`.`t1` where <nop>(('f' > <min>(select 'e' from `test`.`t1` union select 'e' from `test`.`t1`))) Note 1003 select 'e' AS `s1` from `test`.`t1` where <nop>(<in_optimizer>('f',('f' > <min>(select 'e' from `test`.`t1` union select 'e' from `test`.`t1`))))
drop table t1; drop table t1;
CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874'); INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874');

22
mysql-test/r/subselect_no_mat.result
View File

@@ -277,7 +277,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2); select * from t3 where a >= all (select b from t2);
a a
7 7
@@ -1507,7 +1507,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))))
select * from t3 where a >= some (select b from t2); select * from t3 where a >= some (select b from t2);
a a
explain extended select * from t3 where a >= some (select b from t2); explain extended select * from t3 where a >= some (select b from t2);
@@ -1515,7 +1515,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2 group by 1); select * from t3 where a >= all (select b from t2 group by 1);
a a
6 6
@@ -1526,7 +1526,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))))
select * from t3 where a >= some (select b from t2 group by 1); select * from t3 where a >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where a >= some (select b from t2 group by 1); explain extended select * from t3 where a >= some (select b from t2 group by 1);
@@ -1534,7 +1534,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))))
select * from t3 where NULL >= any (select b from t2); select * from t3 where NULL >= any (select b from t2);
a a
explain extended select * from t3 where NULL >= any (select b from t2); explain extended select * from t3 where NULL >= any (select b from t2);
@@ -1542,7 +1542,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(NULL) from `test`.`t2`))))
select * from t3 where NULL >= any (select b from t2 group by 1); select * from t3 where NULL >= any (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= any (select b from t2 group by 1); explain extended select * from t3 where NULL >= any (select b from t2 group by 1);
@@ -1550,7 +1550,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select NULL from `test`.`t2` group by 1))))
select * from t3 where NULL >= some (select b from t2); select * from t3 where NULL >= some (select b from t2);
a a
explain extended select * from t3 where NULL >= some (select b from t2); explain extended select * from t3 where NULL >= some (select b from t2);
@@ -1558,7 +1558,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(NULL) from `test`.`t2`))))
select * from t3 where NULL >= some (select b from t2 group by 1); select * from t3 where NULL >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= some (select b from t2 group by 1); explain extended select * from t3 where NULL >= some (select b from t2 group by 1);
@@ -1566,7 +1566,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select NULL from `test`.`t2` group by 1))))
insert into t2 values (2,2), (2,1), (3,3), (3,1); insert into t2 values (2,2), (2,1), (3,3), (3,1);
select * from t3 where a > all (select max(b) from t2 group by a); select * from t3 where a > all (select max(b) from t2 group by a);
a a
@@ -1577,7 +1577,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))))
drop table t2, t3; drop table t2, t3;
CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ; CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ;
INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now()); INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now());
@@ -1628,7 +1628,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION t1 system NULL NULL NULL NULL 1 100.00 3 UNION t1 system NULL NULL NULL NULL 1 100.00
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings: Warnings:
Note 1003 select 'e' AS `s1` from `test`.`t1` where <nop>(('f' > <min>(select 'e' from `test`.`t1` union select 'e' from `test`.`t1`))) Note 1003 select 'e' AS `s1` from `test`.`t1` where <nop>(<in_optimizer>('f',('f' > <min>(select 'e' from `test`.`t1` union select 'e' from `test`.`t1`))))
drop table t1; drop table t1;
CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874'); INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874');

22
mysql-test/r/subselect_no_opts.result
View File

@@ -274,7 +274,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2); select * from t3 where a >= all (select b from t2);
a a
7 7
@@ -1504,7 +1504,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))))
select * from t3 where a >= some (select b from t2); select * from t3 where a >= some (select b from t2);
a a
explain extended select * from t3 where a >= some (select b from t2); explain extended select * from t3 where a >= some (select b from t2);
@@ -1512,7 +1512,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2 group by 1); select * from t3 where a >= all (select b from t2 group by 1);
a a
6 6
@@ -1523,7 +1523,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))))
select * from t3 where a >= some (select b from t2 group by 1); select * from t3 where a >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where a >= some (select b from t2 group by 1); explain extended select * from t3 where a >= some (select b from t2 group by 1);
@@ -1531,7 +1531,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))))
select * from t3 where NULL >= any (select b from t2); select * from t3 where NULL >= any (select b from t2);
a a
explain extended select * from t3 where NULL >= any (select b from t2); explain extended select * from t3 where NULL >= any (select b from t2);
@@ -1539,7 +1539,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(NULL) from `test`.`t2`))))
select * from t3 where NULL >= any (select b from t2 group by 1); select * from t3 where NULL >= any (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= any (select b from t2 group by 1); explain extended select * from t3 where NULL >= any (select b from t2 group by 1);
@@ -1547,7 +1547,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select NULL from `test`.`t2` group by 1))))
select * from t3 where NULL >= some (select b from t2); select * from t3 where NULL >= some (select b from t2);
a a
explain extended select * from t3 where NULL >= some (select b from t2); explain extended select * from t3 where NULL >= some (select b from t2);
@@ -1555,7 +1555,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(NULL) from `test`.`t2`))))
select * from t3 where NULL >= some (select b from t2 group by 1); select * from t3 where NULL >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= some (select b from t2 group by 1); explain extended select * from t3 where NULL >= some (select b from t2 group by 1);
@@ -1563,7 +1563,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select NULL from `test`.`t2` group by 1))))
insert into t2 values (2,2), (2,1), (3,3), (3,1); insert into t2 values (2,2), (2,1), (3,3), (3,1);
select * from t3 where a > all (select max(b) from t2 group by a); select * from t3 where a > all (select max(b) from t2 group by a);
a a
@@ -1574,7 +1574,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))))
drop table t2, t3; drop table t2, t3;
CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ; CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ;
INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now()); INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now());
@@ -1625,7 +1625,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION t1 system NULL NULL NULL NULL 1 100.00 3 UNION t1 system NULL NULL NULL NULL 1 100.00
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings: Warnings:
Note 1003 select 'e' AS `s1` from `test`.`t1` where <nop>(('f' > <min>(select 'e' from `test`.`t1` union select 'e' from `test`.`t1`))) Note 1003 select 'e' AS `s1` from `test`.`t1` where <nop>(<in_optimizer>('f',('f' > <min>(select 'e' from `test`.`t1` union select 'e' from `test`.`t1`))))
drop table t1; drop table t1;
CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874'); INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874');

22
mysql-test/r/subselect_no_semijoin.result
View File

@@ -274,7 +274,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2); select * from t3 where a >= all (select b from t2);
a a
7 7
@@ -1504,7 +1504,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))))
select * from t3 where a >= some (select b from t2); select * from t3 where a >= some (select b from t2);
a a
explain extended select * from t3 where a >= some (select b from t2); explain extended select * from t3 where a >= some (select b from t2);
@@ -1512,7 +1512,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2 group by 1); select * from t3 where a >= all (select b from t2 group by 1);
a a
6 6
@@ -1523,7 +1523,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))))
select * from t3 where a >= some (select b from t2 group by 1); select * from t3 where a >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where a >= some (select b from t2 group by 1); explain extended select * from t3 where a >= some (select b from t2 group by 1);
@@ -1531,7 +1531,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))))
select * from t3 where NULL >= any (select b from t2); select * from t3 where NULL >= any (select b from t2);
a a
explain extended select * from t3 where NULL >= any (select b from t2); explain extended select * from t3 where NULL >= any (select b from t2);
@@ -1539,7 +1539,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(NULL) from `test`.`t2`))))
select * from t3 where NULL >= any (select b from t2 group by 1); select * from t3 where NULL >= any (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= any (select b from t2 group by 1); explain extended select * from t3 where NULL >= any (select b from t2 group by 1);
@@ -1547,7 +1547,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select NULL from `test`.`t2` group by 1))))
select * from t3 where NULL >= some (select b from t2); select * from t3 where NULL >= some (select b from t2);
a a
explain extended select * from t3 where NULL >= some (select b from t2); explain extended select * from t3 where NULL >= some (select b from t2);
@@ -1555,7 +1555,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(NULL) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(NULL) from `test`.`t2`))))
select * from t3 where NULL >= some (select b from t2 group by 1); select * from t3 where NULL >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= some (select b from t2 group by 1); explain extended select * from t3 where NULL >= some (select b from t2 group by 1);
@@ -1563,7 +1563,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found 2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select NULL from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select NULL from `test`.`t2` group by 1))))
insert into t2 values (2,2), (2,1), (3,3), (3,1); insert into t2 values (2,2), (2,1), (3,3), (3,1);
select * from t3 where a > all (select max(b) from t2 group by a); select * from t3 where a > all (select max(b) from t2 group by a);
a a
@@ -1574,7 +1574,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))))
drop table t2, t3; drop table t2, t3;
CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ; CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ;
INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now()); INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now());
@@ -1625,7 +1625,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION t1 system NULL NULL NULL NULL 1 100.00 3 UNION t1 system NULL NULL NULL NULL 1 100.00
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings: Warnings:
Note 1003 select 'e' AS `s1` from `test`.`t1` where <nop>(('f' > <min>(select 'e' from `test`.`t1` union select 'e' from `test`.`t1`))) Note 1003 select 'e' AS `s1` from `test`.`t1` where <nop>(<in_optimizer>('f',('f' > <min>(select 'e' from `test`.`t1` union select 'e' from `test`.`t1`))))
drop table t1; drop table t1;
CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874'); INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874');

22
mysql-test/suite/pbxt/r/subselect.result
View File

@@ -270,7 +270,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2); select * from t3 where a >= all (select b from t2);
a a
7 7
@@ -1498,7 +1498,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < (select max(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where a >= some (select b from t2); select * from t3 where a >= some (select b from t2);
a a
explain extended select * from t3 where a >= some (select b from t2); explain extended select * from t3 where a >= some (select b from t2);
@@ -1506,7 +1506,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where a >= all (select b from t2 group by 1); select * from t3 where a >= all (select b from t2 group by 1);
a a
6 6
@@ -1517,7 +1517,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < <max>(select `test`.`t2`.`b` from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` < <max>(select `test`.`t2`.`b` from `test`.`t2` group by 1))))
select * from t3 where a >= some (select b from t2 group by 1); select * from t3 where a >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where a >= some (select b from t2 group by 1); explain extended select * from t3 where a >= some (select b from t2 group by 1);
@@ -1525,7 +1525,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= <min>(select `test`.`t2`.`b` from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` >= <min>(select `test`.`t2`.`b` from `test`.`t2` group by 1))))
select * from t3 where NULL >= any (select b from t2); select * from t3 where NULL >= any (select b from t2);
a a
explain extended select * from t3 where NULL >= any (select b from t2); explain extended select * from t3 where NULL >= any (select b from t2);
@@ -1533,7 +1533,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where NULL >= any (select b from t2 group by 1); select * from t3 where NULL >= any (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= any (select b from t2 group by 1); explain extended select * from t3 where NULL >= any (select b from t2 group by 1);
@@ -1541,7 +1541,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select `test`.`t2`.`b` from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select `test`.`t2`.`b` from `test`.`t2` group by 1))))
select * from t3 where NULL >= some (select b from t2); select * from t3 where NULL >= some (select b from t2);
a a
explain extended select * from t3 where NULL >= some (select b from t2); explain extended select * from t3 where NULL >= some (select b from t2);
@@ -1549,7 +1549,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= (select min(`test`.`t2`.`b`) from `test`.`t2`))))
select * from t3 where NULL >= some (select b from t2 group by 1); select * from t3 where NULL >= some (select b from t2 group by 1);
a a
explain extended select * from t3 where NULL >= some (select b from t2 group by 1); explain extended select * from t3 where NULL >= some (select b from t2 group by 1);
@@ -1557,7 +1557,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 0 0.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((NULL >= <min>(select `test`.`t2`.`b` from `test`.`t2` group by 1))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(NULL >= <min>(select `test`.`t2`.`b` from `test`.`t2` group by 1))))
insert into t2 values (2,2), (2,1), (3,3), (3,1); insert into t2 values (2,2), (2,1), (3,3), (3,1);
select * from t3 where a > all (select max(b) from t2 group by a); select * from t3 where a > all (select max(b) from t2 group by a);
a a
@@ -1568,7 +1568,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary 2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))))
drop table t2, t3; drop table t2, t3;
CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ; CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ;
INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now()); INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now());
@@ -1619,7 +1619,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION t1 ALL NULL NULL NULL NULL 1 100.00 3 UNION t1 ALL NULL NULL NULL NULL 1 100.00
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings: Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1` from `test`.`t1` where <nop>(('f' > <min>(select `test`.`t1`.`s1` from `test`.`t1` union select `test`.`t1`.`s1` from `test`.`t1`))) Note 1003 select `test`.`t1`.`s1` AS `s1` from `test`.`t1` where <nop>(<in_optimizer>('f',('f' > <min>(select `test`.`t1`.`s1` from `test`.`t1` union select `test`.`t1`.`s1` from `test`.`t1`))))
drop table t1; drop table t1;
CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874'); INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874');

5
mysql-test/t/explain.test
View File

@@ -158,7 +158,10 @@ SELECT @@session.sql_mode INTO @old_sql_mode;
SET SESSION sql_mode='ONLY_FULL_GROUP_BY'; SET SESSION sql_mode='ONLY_FULL_GROUP_BY';
# EXPLAIN EXTENDED (with subselect). used to crash. should give NOTICE. # EXPLAIN EXTENDED (with subselect). used to crash. should give NOTICE.
--error ER_MIX_OF_GROUP_FUNC_AND_FIELDS # Before moving max/min optimization to optimize phase this statement
# generated error, but as far as original query do not contain aggregate
# function user should not see error
# --error ER_MIX_OF_GROUP_FUNC_AND_FIELDS
EXPLAIN EXTENDED SELECT 1 FROM t1 EXPLAIN EXTENDED SELECT 1 FROM t1
WHERE f1 > ALL( SELECT t.f1 FROM t1,t1 AS t ); WHERE f1 > ALL( SELECT t.f1 FROM t1,t1 AS t );
SHOW WARNINGS; SHOW WARNINGS;

55
sql/item_cmpfunc.cc
View File

@@ -1798,6 +1798,8 @@ Item *Item_in_optimizer::expr_cache_insert_transformer(uchar *thd_arg)
{ {
THD *thd= (THD*) thd_arg; THD *thd= (THD*) thd_arg;
DBUG_ENTER("Item_in_optimizer::expr_cache_insert_transformer"); DBUG_ENTER("Item_in_optimizer::expr_cache_insert_transformer");
if (args[1]->type() != Item::SUBSELECT_ITEM)
DBUG_RETURN(this); // MAX/MIN transformed => do nothing
List<Item*> &depends_on= ((Item_subselect *)args[1])->depends_on; List<Item*> &depends_on= ((Item_subselect *)args[1])->depends_on;
if (expr_cache) if (expr_cache)
@@ -1902,6 +1904,14 @@ longlong Item_in_optimizer::val_int()
cache->store(args[0]); cache->store(args[0]);
cache->cache_value(); cache->cache_value();
if (args[1]->type() != Item::SUBSELECT_ITEM)
{
/* MAX/MIN transformed => pass through */
longlong res= args[1]->val_int();
null_value= args[1]->null_value;
return (res);
}
if (cache->null_value) if (cache->null_value)
{ {
/* /*
@@ -2050,24 +2060,35 @@ Item *Item_in_optimizer::transform(Item_transformer transformer, uchar *argument
if ((*args) != new_item) if ((*args) != new_item)
current_thd->change_item_tree(args, new_item); current_thd->change_item_tree(args, new_item);
/* if (args[1]->type() != Item::SUBSELECT_ITEM)
Transform the right IN operand which should be an Item_in_subselect or a {
subclass of it. The left operand of the IN must be the same as the left /* MAX/MIN transformed => pass through */
operand of this Item_in_optimizer, so in this case there is no further new_item= args[1]->transform(transformer, argument);
transformation, we only make both operands the same. if (!new_item)
TODO: is it the way it should be? return 0;
*/ if (args[1] != new_item)
DBUG_ASSERT((args[1])->type() == Item::SUBSELECT_ITEM && current_thd->change_item_tree(args, new_item);
(((Item_subselect*)(args[1]))->substype() == }
Item_subselect::IN_SUBS || else
((Item_subselect*)(args[1]))->substype() == {
Item_subselect::ALL_SUBS || /*
((Item_subselect*)(args[1]))->substype() == Transform the right IN operand which should be an Item_in_subselect or a
Item_subselect::ANY_SUBS)); subclass of it. The left operand of the IN must be the same as the left
operand of this Item_in_optimizer, so in this case there is no further
Item_in_subselect *in_arg= (Item_in_subselect*)args[1]; transformation, we only make both operands the same.
in_arg->left_expr= args[0]; TODO: is it the way it should be?
*/
DBUG_ASSERT((args[1])->type() == Item::SUBSELECT_ITEM &&
(((Item_subselect*)(args[1]))->substype() ==
Item_subselect::IN_SUBS ||
((Item_subselect*)(args[1]))->substype() ==
Item_subselect::ALL_SUBS ||
((Item_subselect*)(args[1]))->substype() ==
Item_subselect::ANY_SUBS));
Item_in_subselect *in_arg= (Item_in_subselect*)args[1];
in_arg->left_expr= args[0];
}
return (this->*transformer)(argument); return (this->*transformer)(argument);
} }

291
sql/item_subselect.cc
View File

@@ -33,12 +33,14 @@
Item_subselect::Item_subselect(): Item_subselect::Item_subselect():
Item_result_field(), value_assigned(0), thd(0), substitution(0), Item_result_field(), value_assigned(0), thd(0), substitution(0),
expr_cache(0), engine(0), old_engine(0), used_tables_cache(0), expr_cache(0), engine(0), old_engine(0), used_tables_cache(0),
have_to_be_excluded(0), const_item_cache(1), inside_first_fix_fields(0), have_to_be_excluded(0), const_item_cache(1), inside_first_fix_fields(0),
done_first_fix_fields(FALSE), forced_const(FALSE), eliminated(FALSE), done_first_fix_fields(FALSE), forced_const(FALSE), eliminated(FALSE),
engine_changed(0), changed(0), is_correlated(FALSE) engine_changed(0), changed(0), is_correlated(FALSE)
{ {
DBUG_ENTER("Item_subselect::Item_subselect");
DBUG_PRINT("enter", ("this: 0x%lx", (ulong) this));
with_subselect= 1; with_subselect= 1;
reset(); reset();
/* /*
@@ -46,6 +48,7 @@ Item_subselect::Item_subselect():
(i.e. some rows will be found returned) (i.e. some rows will be found returned)
*/ */
null_value= TRUE; null_value= TRUE;
DBUG_VOID_RETURN;
} }
@@ -58,7 +61,8 @@ void Item_subselect::init(st_select_lex *select_lex,
*/ */
DBUG_ENTER("Item_subselect::init"); DBUG_ENTER("Item_subselect::init");
DBUG_PRINT("enter", ("select_lex: 0x%lx", (long) select_lex)); DBUG_PRINT("enter", ("select_lex: 0x%lx this: 0x%lx",
(ulong) select_lex, (ulong) this));
unit= select_lex->master_unit(); unit= select_lex->master_unit();
thd= unit->thd; thd= unit->thd;
@@ -69,10 +73,12 @@ void Item_subselect::init(st_select_lex *select_lex,
=> we do not copy old_engine here => we do not copy old_engine here
*/ */
engine= unit->item->engine; engine= unit->item->engine;
borrowed_engine= TRUE;
parsing_place= unit->item->parsing_place; parsing_place= unit->item->parsing_place;
unit->item->engine= 0; //unit->item->engine= 0;
unit->item= this; thd->change_item_tree((Item**)&unit->item, this);
engine->change_result(this, result); //unit->item= this;
engine->change_result(this, result, TRUE);
} }
else else
{ {
@@ -97,6 +103,7 @@ void Item_subselect::init(st_select_lex *select_lex,
/* The subquery is an expression cache candidate */ /* The subquery is an expression cache candidate */
upper->expr_cache_may_be_used[upper->parsing_place]= TRUE; upper->expr_cache_may_be_used[upper->parsing_place]= TRUE;
} }
DBUG_PRINT("info", ("engine: 0x%lx", (ulong)engine));
DBUG_VOID_RETURN; DBUG_VOID_RETURN;
} }
@@ -156,8 +163,14 @@ void Item_in_subselect::cleanup()
Item_subselect::~Item_subselect() Item_subselect::~Item_subselect()
{ {
delete engine; DBUG_ENTER("Item_subselect::~Item_subselect");
DBUG_PRINT("enter", ("this: 0x%lx", (ulong) this));
if (!borrowed_engine)
delete engine;
else
engine->cleanup();
engine= NULL; engine= NULL;
DBUG_VOID_RETURN;
} }
bool bool
@@ -1119,11 +1132,23 @@ Item_allany_subselect::Item_allany_subselect(Item * left_exp,
void Item_exists_subselect::fix_length_and_dec() void Item_exists_subselect::fix_length_and_dec()
{ {
decimals= 0; DBUG_ENTER("Item_exists_subselect::fix_length_and_dec");
max_length= 1; decimals= 0;
max_columns= engine->cols(); max_length= 1;
max_columns= engine->cols();
/* We need only 1 row to determine existence */ /* We need only 1 row to determine existence */
unit->global_parameters->select_limit= new Item_int((int32) 1); unit->global_parameters->select_limit= new Item_int((int32) 1);
DBUG_PRINT("info", ("Set limit to 1"));
DBUG_VOID_RETURN;
}
void Item_in_subselect::fix_length_and_dec()
{
DBUG_ENTER("Item_in_subselect::fix_length_and_dec");
decimals= 0;
max_length= 1;
max_columns= engine->cols();
DBUG_VOID_RETURN;
} }
@@ -1388,88 +1413,6 @@ Item_in_subselect::single_value_transformer(JOIN *join)
DBUG_RETURN(true); DBUG_RETURN(true);
} }
/*
If this is an ALL/ANY single-value subselect, try to rewrite it with
a MIN/MAX subselect. We can do that if a possible NULL result of the
subselect can be ignored.
E.g. SELECT * FROM t1 WHERE b > ANY (SELECT a FROM t2) can be rewritten
with SELECT * FROM t1 WHERE b > (SELECT MAX(a) FROM t2).
We can't check that this optimization is safe if it's not a top-level
item of the WHERE clause (e.g. because the WHERE clause can contain IS
NULL/IS NOT NULL functions). If so, we rewrite ALL/ANY with NOT EXISTS
later in this method.
*/
if ((abort_on_null || (upper_item && upper_item->top_level())) &&
!select_lex->master_unit()->uncacheable && !func->eqne_op())
{
if (substitution)
{
/* It is second (third, ...) SELECT of UNION => All is done */
DBUG_RETURN(false);
}
Item *subs;
if (!select_lex->group_list.elements &&
!select_lex->having &&
!select_lex->with_sum_func &&
!(select_lex->next_select()) &&
select_lex->table_list.elements)
{
Item_sum_hybrid *item;
nesting_map save_allow_sum_func;
if (func->l_op())
{
/*
(ALL && (> || =>)) || (ANY && (< || =<))
for ALL condition is inverted
*/
item= new Item_sum_max(*select_lex->ref_pointer_array);
}
else
{
/*
(ALL && (< || =<)) || (ANY && (> || =>))
for ALL condition is inverted
*/
item= new Item_sum_min(*select_lex->ref_pointer_array);
}
if (upper_item)
upper_item->set_sum_test(item);
*select_lex->ref_pointer_array= item;
{
List_iterator<Item> it(select_lex->item_list);
it++;
it.replace(item);
}
save_allow_sum_func= thd->lex->allow_sum_func;
thd->lex->allow_sum_func|= 1 << thd->lex->current_select->nest_level;
/*
Item_sum_(max|min) can't substitute other item => we can use 0 as
reference, also Item_sum_(max|min) can't be fixed after creation, so
we do not check item->fixed
*/
if (item->fix_fields(thd, 0))
DBUG_RETURN(true);
thd->lex->allow_sum_func= save_allow_sum_func;
/* we added aggregate function => we have to change statistic */
count_field_types(select_lex, &join->tmp_table_param, join->all_fields,
0);
subs= new Item_singlerow_subselect(select_lex);
}
else
{
Item_maxmin_subselect *item;
subs= item= new Item_maxmin_subselect(thd, this, select_lex, func->l_op());
if (upper_item)
upper_item->set_sub_test(item);
}
/* fix fields is already called for left expression */
substitution= func->create(left_expr, subs);
DBUG_RETURN(false);
}
Item* join_having= join->having ? join->having : join->tmp_having; Item* join_having= join->having ? join->having : join->tmp_having;
if (!(join_having || select_lex->with_sum_func || if (!(join_having || select_lex->with_sum_func ||
select_lex->group_list.elements) && select_lex->group_list.elements) &&
@@ -1503,7 +1446,6 @@ Item_in_subselect::single_value_transformer(JOIN *join)
if (!substitution) if (!substitution)
{ {
/* We're invoked for the 1st (or the only) SELECT in the subquery UNION */ /* We're invoked for the 1st (or the only) SELECT in the subquery UNION */
SELECT_LEX_UNIT *master_unit= select_lex->master_unit();
substitution= optimizer; substitution= optimizer;
SELECT_LEX *current= thd->lex->current_select; SELECT_LEX *current= thd->lex->current_select;
@@ -1529,20 +1471,106 @@ Item_in_subselect::single_value_transformer(JOIN *join)
(char *)"<no matter>", (char *)"<no matter>",
(char *)in_left_expr_name); (char *)in_left_expr_name);
/*
The uncacheable property controls a number of actions, e.g. whether to
save/restore (via init_save_join_tab/restore_tmp) the original JOIN for
plans with a temp table where the original JOIN was overriden by
make_simple_join. The UNCACHEABLE_EXPLAIN is ignored by EXPLAIN, thus
non-correlated subqueries will not appear as such to EXPLAIN.
*/
master_unit->uncacheable|= UNCACHEABLE_EXPLAIN;
select_lex->uncacheable|= UNCACHEABLE_EXPLAIN;
} }
DBUG_RETURN(false); DBUG_RETURN(false);
} }
bool Item_allany_subselect::transform_allany(JOIN *join)
{
DBUG_ENTER("Item_allany_subselect::transform_allany");
if (!(in_strategy & SUBS_MAXMIN))
DBUG_RETURN(0);
Item **place= optimizer->arguments() + 1;
THD *thd= join->thd;
SELECT_LEX *select_lex= join->select_lex;
Item *subs;
/*
If this is an ALL/ANY single-value subselect, try to rewrite it with
a MIN/MAX subselect. We can do that if a possible NULL result of the
subselect can be ignored.
E.g. SELECT * FROM t1 WHERE b > ANY (SELECT a FROM t2) can be rewritten
with SELECT * FROM t1 WHERE b > (SELECT MAX(a) FROM t2).
We can't check that this optimization is safe if it's not a top-level
item of the WHERE clause (e.g. because the WHERE clause can contain IS
NULL/IS NOT NULL functions). If so, we rewrite ALL/ANY with NOT EXISTS
later in this method.
*/
DBUG_ASSERT(!substitution);
if (!select_lex->group_list.elements &&
!select_lex->having &&
!select_lex->with_sum_func &&
!(select_lex->next_select()) &&
select_lex->table_list.elements)
{
Item_sum_hybrid *item;
nesting_map save_allow_sum_func;
if (func->l_op())
{
/*
(ALL && (> || =>)) || (ANY && (< || =<))
for ALL condition is inverted
*/
item= new Item_sum_max(*select_lex->ref_pointer_array);
}
else
{
/*
(ALL && (< || =<)) || (ANY && (> || =>))
for ALL condition is inverted
*/
item= new Item_sum_min(*select_lex->ref_pointer_array);
}
if (upper_item)
upper_item->set_sum_test(item);
thd->change_item_tree(select_lex->ref_pointer_array, item);
{
List_iterator<Item> it(select_lex->item_list);
it++;
thd->change_item_tree(it.ref(), item);
}
save_allow_sum_func= thd->lex->allow_sum_func;
thd->lex->allow_sum_func|= 1 << thd->lex->current_select->nest_level;
/*
Item_sum_(max|min) can't substitute other item => we can use 0 as
reference, also Item_sum_(max|min) can't be fixed after creation, so
we do not check item->fixed
*/
if (item->fix_fields(thd, 0))
DBUG_RETURN(true);
thd->lex->allow_sum_func= save_allow_sum_func;
/* we added aggregate function => we have to change statistic */
count_field_types(select_lex, &join->tmp_table_param, join->all_fields,
0);
if (join->prepare_stage2())
DBUG_RETURN(true);
subs= new Item_singlerow_subselect(select_lex);
}
else
{
Item_maxmin_subselect *item;
subs= item= new Item_maxmin_subselect(thd, this, select_lex, func->l_op());
if (upper_item)
upper_item->set_sub_test(item);
}
/* fix fields is already called for left expression */
subs= func->create(left_expr, subs);
thd->change_item_tree(place, subs);
if (subs->fix_fields(thd, &subs))
DBUG_RETURN(1);
DBUG_ASSERT(subs == (*place)); // There was no substitutions
select_lex->master_unit()->uncacheable&= ~UNCACHEABLE_DEPENDENT_INJECTED;
select_lex->uncacheable&= ~UNCACHEABLE_DEPENDENT_INJECTED;
/* remove other strategies if there was (just to be safe) */
in_strategy= SUBS_MAXMIN;
DBUG_RETURN(false);
}
bool Item_in_subselect::fix_having(Item *having, SELECT_LEX *select_lex) bool Item_in_subselect::fix_having(Item *having, SELECT_LEX *select_lex)
{ {
@@ -1556,6 +1584,16 @@ bool Item_in_subselect::fix_having(Item *having, SELECT_LEX *select_lex)
return fix_res; return fix_res;
} }
bool Item_allany_subselect::is_maxmin_applicable(JOIN *join)
{
/*
Check if max/min optimization applicable: It is top item of
WHERE condition.
*/
return (abort_on_null || (upper_item && upper_item->top_level())) &&
!join->select_lex->master_unit()->uncacheable && !func->eqne_op();
}
/** /**
Create the predicates needed to transform a single-column IN/ALL/ANY Create the predicates needed to transform a single-column IN/ALL/ANY
@@ -2028,7 +2066,7 @@ bool Item_in_subselect::create_in_to_exists_cond(JOIN *join_arg)
/* /*
The IN=>EXISTS transformation makes non-correlated subqueries correlated. The IN=>EXISTS transformation makes non-correlated subqueries correlated.
*/ */
join_arg->select_lex->uncacheable|= UNCACHEABLE_DEPENDENT; join_arg->select_lex->uncacheable|= UNCACHEABLE_DEPENDENT_INJECTED;
if (left_expr->cols() == 1) if (left_expr->cols() == 1)
res= create_single_in_to_exists_cond(join_arg, res= create_single_in_to_exists_cond(join_arg,
&(join_arg->in_to_exists_where), &(join_arg->in_to_exists_where),
@@ -2037,6 +2075,16 @@ bool Item_in_subselect::create_in_to_exists_cond(JOIN *join_arg)
res= create_row_in_to_exists_cond(join_arg, res= create_row_in_to_exists_cond(join_arg,
&(join_arg->in_to_exists_where), &(join_arg->in_to_exists_where),
&(join_arg->in_to_exists_having)); &(join_arg->in_to_exists_having));
/*
The uncacheable property controls a number of actions, e.g. whether to
save/restore (via init_save_join_tab/restore_tmp) the original JOIN for
plans with a temp table where the original JOIN was overriden by
make_simple_join. The UNCACHEABLE_EXPLAIN is ignored by EXPLAIN, thus
non-correlated subqueries will not appear as such to EXPLAIN.
*/
join_arg->select_lex->master_unit()->uncacheable|= UNCACHEABLE_EXPLAIN;
join_arg->select_lex->uncacheable|= UNCACHEABLE_EXPLAIN;
return (res); return (res);
} }
@@ -2107,6 +2155,9 @@ bool Item_in_subselect::inject_in_to_exists_cond(JOIN *join_arg)
select_lex->having->top_level_item(); select_lex->having->top_level_item();
join_arg->having= select_lex->having; join_arg->having= select_lex->having;
} }
join_arg->thd->change_item_tree(&unit->global_parameters->select_limit,
new Item_int((int32) 1));
unit->select_limit_cnt= 1;
DBUG_RETURN(false); DBUG_RETURN(false);
} }
@@ -2407,7 +2458,8 @@ bool
Item_allany_subselect::select_transformer(JOIN *join) Item_allany_subselect::select_transformer(JOIN *join)
{ {
DBUG_ENTER("Item_allany_subselect::select_transformer"); DBUG_ENTER("Item_allany_subselect::select_transformer");
in_strategy= SUBS_IN_TO_EXISTS; DBUG_ASSERT((in_strategy & ~(SUBS_MAXMIN | SUBS_IN_TO_EXISTS)) == 0);
in_strategy|= SUBS_IN_TO_EXISTS;
if (upper_item) if (upper_item)
upper_item->show= 1; upper_item->show= 1;
DBUG_RETURN(select_in_like_transformer(join)); DBUG_RETURN(select_in_like_transformer(join));
@@ -2458,6 +2510,7 @@ void subselect_single_select_engine::cleanup()
prepared= executed= 0; prepared= executed= 0;
join= 0; join= 0;
result->cleanup(); result->cleanup();
select_lex->uncacheable&= ~UNCACHEABLE_DEPENDENT_INJECTED;
DBUG_VOID_RETURN; DBUG_VOID_RETURN;
} }
@@ -2467,6 +2520,9 @@ void subselect_union_engine::cleanup()
DBUG_ENTER("subselect_union_engine::cleanup"); DBUG_ENTER("subselect_union_engine::cleanup");
unit->reinit_exec_mechanism(); unit->reinit_exec_mechanism();
result->cleanup(); result->cleanup();
unit->uncacheable&= ~UNCACHEABLE_DEPENDENT_INJECTED;
for (SELECT_LEX *sl= unit->first_select(); sl; sl= sl->next_select())
sl->uncacheable&= ~UNCACHEABLE_DEPENDENT_INJECTED;
DBUG_VOID_RETURN; DBUG_VOID_RETURN;
} }
@@ -3466,11 +3522,16 @@ void subselect_indexsubquery_engine::print(String *str,
TRUE error TRUE error
*/ */
bool subselect_single_select_engine::change_result(Item_subselect *si, bool
select_result_interceptor *res) subselect_single_select_engine::change_result(Item_subselect *si,
select_result_interceptor *res,
bool temp)
{ {
item= si; item= si;
result= res; if (temp)
thd->change_item_tree((Item**) &result, (Item*)res);
else
result= res;
return select_lex->join->change_result(result); return select_lex->join->change_result(result);
} }
@@ -3488,11 +3549,15 @@ bool subselect_single_select_engine::change_result(Item_subselect *si,
*/ */
bool subselect_union_engine::change_result(Item_subselect *si, bool subselect_union_engine::change_result(Item_subselect *si,
select_result_interceptor *res) select_result_interceptor *res,
bool temp)
{ {
item= si; item= si;
int rc= unit->change_result(res, result); int rc= unit->change_result(res, result);
result= res; if (temp)
thd->change_item_tree((Item**) &result, (Item*)res);
else
result= res;
return rc; return rc;
} }
@@ -3509,8 +3574,11 @@ bool subselect_union_engine::change_result(Item_subselect *si,
TRUE error TRUE error
*/ */
bool subselect_uniquesubquery_engine::change_result(Item_subselect *si, bool
select_result_interceptor *res) subselect_uniquesubquery_engine::change_result(Item_subselect *si,
select_result_interceptor *res,
bool temp
__attribute__((unused)))
{ {
DBUG_ASSERT(0); DBUG_ASSERT(0);
return TRUE; return TRUE;
@@ -4301,7 +4369,8 @@ bool subselect_hash_sj_engine::no_tables()
} }
bool subselect_hash_sj_engine::change_result(Item_subselect *si, bool subselect_hash_sj_engine::change_result(Item_subselect *si,
select_result_interceptor *res) select_result_interceptor *res,
bool temp __attribute__((unused)))
{ {
DBUG_ASSERT(FALSE); DBUG_ASSERT(FALSE);
return TRUE; return TRUE;

34
sql/item_subselect.h
View File

@@ -32,7 +32,8 @@ class Cached_item;
class Item_subselect :public Item_result_field class Item_subselect :public Item_result_field
{ {
bool value_assigned; /* value already assigned to subselect */ bool value_assigned; /* value already assigned to subselect */
bool borrowed_engine; /* the engine was taken from other Item_subselect */
protected: protected:
/* thread handler, will be assigned in fix_fields only */ /* thread handler, will be assigned in fix_fields only */
THD *thd; THD *thd;
@@ -356,6 +357,9 @@ public:
/* Partial matching substrategies of MATERIALIZATION. */ /* Partial matching substrategies of MATERIALIZATION. */
#define SUBS_PARTIAL_MATCH_ROWID_MERGE 8 #define SUBS_PARTIAL_MATCH_ROWID_MERGE 8
#define SUBS_PARTIAL_MATCH_TABLE_SCAN 16 #define SUBS_PARTIAL_MATCH_TABLE_SCAN 16
/* ALL/ANY will be transformed with max/min optimization */
#define SUBS_MAXMIN 32
/** /**
Representation of IN subquery predicates of the form Representation of IN subquery predicates of the form
@@ -486,6 +490,7 @@ public:
bool test_limit(st_select_lex_unit *unit); bool test_limit(st_select_lex_unit *unit);
virtual void print(String *str, enum_query_type query_type); virtual void print(String *str, enum_query_type query_type);
bool fix_fields(THD *thd, Item **ref); bool fix_fields(THD *thd, Item **ref);
void fix_length_and_dec();
void fix_after_pullout(st_select_lex *new_parent, Item **ref); void fix_after_pullout(st_select_lex *new_parent, Item **ref);
void update_used_tables(); void update_used_tables();
bool setup_mat_engine(); bool setup_mat_engine();
@@ -523,6 +528,8 @@ public:
bool select_transformer(JOIN *join); bool select_transformer(JOIN *join);
void create_comp_func(bool invert) { func= func_creator(invert); } void create_comp_func(bool invert) { func= func_creator(invert); }
virtual void print(String *str, enum_query_type query_type); virtual void print(String *str, enum_query_type query_type);
bool is_maxmin_applicable(JOIN *join);
bool transform_allany(JOIN *join);
}; };
@@ -594,7 +601,8 @@ public:
static table_map calc_const_tables(TABLE_LIST *); static table_map calc_const_tables(TABLE_LIST *);
virtual void print(String *str, enum_query_type query_type)= 0; virtual void print(String *str, enum_query_type query_type)= 0;
virtual bool change_result(Item_subselect *si, virtual bool change_result(Item_subselect *si,
select_result_interceptor *result)= 0; select_result_interceptor *result,
bool temp= FALSE)= 0;
virtual bool no_tables()= 0; virtual bool no_tables()= 0;
virtual bool is_executed() const { return FALSE; } virtual bool is_executed() const { return FALSE; }
/* Check if subquery produced any rows during last query execution */ /* Check if subquery produced any rows during last query execution */
@@ -626,7 +634,9 @@ public:
void exclude(); void exclude();
table_map upper_select_const_tables(); table_map upper_select_const_tables();
virtual void print (String *str, enum_query_type query_type); virtual void print (String *str, enum_query_type query_type);
bool change_result(Item_subselect *si, select_result_interceptor *result); bool change_result(Item_subselect *si,
select_result_interceptor *result,
bool temp);
bool no_tables(); bool no_tables();
bool may_be_null(); bool may_be_null();
bool is_executed() const { return executed; } bool is_executed() const { return executed; }
@@ -655,7 +665,9 @@ public:
void exclude(); void exclude();
table_map upper_select_const_tables(); table_map upper_select_const_tables();
virtual void print (String *str, enum_query_type query_type); virtual void print (String *str, enum_query_type query_type);
bool change_result(Item_subselect *si, select_result_interceptor *result); bool change_result(Item_subselect *si,
select_result_interceptor *result,
bool temp= FALSE);
bool no_tables(); bool no_tables();
bool is_executed() const; bool is_executed() const;
bool no_rows(); bool no_rows();
@@ -707,11 +719,13 @@ public:
void fix_length_and_dec(Item_cache** row); void fix_length_and_dec(Item_cache** row);
int exec(); int exec();
uint cols() { return 1; } uint cols() { return 1; }
uint8 uncacheable() { return UNCACHEABLE_DEPENDENT; } uint8 uncacheable() { return UNCACHEABLE_DEPENDENT_INJECTED; }
void exclude(); void exclude();
table_map upper_select_const_tables() { return 0; } table_map upper_select_const_tables() { return 0; }
virtual void print (String *str, enum_query_type query_type); virtual void print (String *str, enum_query_type query_type);
bool change_result(Item_subselect *si, select_result_interceptor *result); bool change_result(Item_subselect *si,
select_result_interceptor *result,
bool temp= FALSE);
bool no_tables(); bool no_tables();
int index_lookup(); /* TIMOUR: this method needs refactoring. */ int index_lookup(); /* TIMOUR: this method needs refactoring. */
int scan_table(); int scan_table();
@@ -879,7 +893,9 @@ public:
void fix_length_and_dec(Item_cache** row);//=>base class void fix_length_and_dec(Item_cache** row);//=>base class
void exclude(); //=>base class void exclude(); //=>base class
//=>base class //=>base class
bool change_result(Item_subselect *si, select_result_interceptor *result); bool change_result(Item_subselect *si,
select_result_interceptor *result,
bool temp= FALSE);
bool no_tables();//=>base class bool no_tables();//=>base class
}; };
@@ -1106,7 +1122,9 @@ public:
uint8 uncacheable() { return UNCACHEABLE_DEPENDENT; } uint8 uncacheable() { return UNCACHEABLE_DEPENDENT; }
void exclude() {} void exclude() {}
table_map upper_select_const_tables() { return 0; } table_map upper_select_const_tables() { return 0; }
bool change_result(Item_subselect*, select_result_interceptor*) bool change_result(Item_subselect*,
select_result_interceptor*,
bool temp= FALSE)
{ DBUG_ASSERT(FALSE); return false; } { DBUG_ASSERT(FALSE); return false; }
bool no_tables() { return false; } bool no_tables() { return false; }
bool no_rows() bool no_rows()

16
sql/mysql_priv.h
View File

@@ -679,14 +679,18 @@ enabled by default, add OPTIMIZER_SWITCH_MATERIALIZATION
#define CONTEXT_ANALYSIS_ONLY_DERIVED 4 #define CONTEXT_ANALYSIS_ONLY_DERIVED 4
// uncachable cause // uncachable cause
#define UNCACHEABLE_DEPENDENT 1 #define UNCACHEABLE_DEPENDENT_GENERATED 1
#define UNCACHEABLE_RAND 2 #define UNCACHEABLE_RAND 2
#define UNCACHEABLE_SIDEEFFECT 4 #define UNCACHEABLE_SIDEEFFECT 4
/// forcing to save JOIN for explain /// forcing to save JOIN for explain
#define UNCACHEABLE_EXPLAIN 8 #define UNCACHEABLE_EXPLAIN 8
/* For uncorrelated SELECT in an UNION with some correlated SELECTs */ /* For uncorrelated SELECT in an UNION with some correlated SELECTs */
#define UNCACHEABLE_UNITED 16 #define UNCACHEABLE_UNITED 16
#define UNCACHEABLE_CHECKOPTION 32 #define UNCACHEABLE_CHECKOPTION 32
#define UNCACHEABLE_DEPENDENT_INJECTED 64
#define UNCACHEABLE_DEPENDENT (UNCACHEABLE_DEPENDENT_GENERATED | \
UNCACHEABLE_DEPENDENT_INJECTED)
/* Used to check GROUP BY list in the MODE_ONLY_FULL_GROUP_BY mode */ /* Used to check GROUP BY list in the MODE_ONLY_FULL_GROUP_BY mode */
#define UNDEF_POS (-1) #define UNDEF_POS (-1)

45
sql/opt_subselect.cc
View File

@@ -93,8 +93,19 @@ int check_and_do_in_subquery_rewrites(JOIN *join)
(subselect= parent_unit->item)) // (2) (subselect= parent_unit->item)) // (2)
{ {
Item_in_subselect *in_subs= NULL; Item_in_subselect *in_subs= NULL;
if (subselect->substype() == Item_subselect::IN_SUBS) Item_allany_subselect *allany_subs= NULL;
in_subs= (Item_in_subselect*)subselect; switch (subselect->substype()) {
case Item_subselect::IN_SUBS:
in_subs= (Item_in_subselect *)subselect;
break;
case Item_subselect::ALL_SUBS:
case Item_subselect::ANY_SUBS:
allany_subs= (Item_allany_subselect *)subselect;
break;
default:
break;
}
/* Resolve expressions and perform semantic analysis for IN query */ /* Resolve expressions and perform semantic analysis for IN query */
if (in_subs != NULL) if (in_subs != NULL)
@@ -257,12 +268,18 @@ int check_and_do_in_subquery_rewrites(JOIN *join)
} }
} }
/* Check if max/min optimization applicable */
if (allany_subs)
allany_subs->in_strategy|= (allany_subs->is_maxmin_applicable(join) ?
SUBS_MAXMIN :
SUBS_IN_TO_EXISTS);
/* /*
Transform each subquery predicate according to its overloaded Transform each subquery predicate according to its overloaded
transformer. transformer.
*/ */
if (subselect->select_transformer(join)) if (subselect->select_transformer(join))
DBUG_RETURN(-11); DBUG_RETURN(-1);
} }
} }
DBUG_RETURN(0); DBUG_RETURN(0);
@@ -369,6 +386,21 @@ bool subquery_types_allow_materialization(Item_in_subselect *in_subs)
} }
/**
Apply max min optimization of all/any subselect
*/
bool convert_max_min_subquery(JOIN *join)
{
DBUG_ENTER("convert_max_min_subquery");
Item_subselect *subselect= join->unit->item;
if (!subselect || (subselect->substype() != Item_subselect::ALL_SUBS &&
subselect->substype() != Item_subselect::ANY_SUBS))
DBUG_RETURN(0);
DBUG_RETURN(((Item_allany_subselect *) subselect)->transform_allany(join));
}
/* /*
Convert semi-join subquery predicates into semi-join join nests Convert semi-join subquery predicates into semi-join join nests
@@ -3843,8 +3875,8 @@ bool JOIN::choose_subquery_plan(table_map join_tables)
restore_query_plan(&save_qep); restore_query_plan(&save_qep);
/* TODO: should we set/unset this flag for both select_lex and its unit? */ /* TODO: should we set/unset this flag for both select_lex and its unit? */
in_subs->unit->uncacheable&= ~UNCACHEABLE_DEPENDENT; in_subs->unit->uncacheable&= ~UNCACHEABLE_DEPENDENT_INJECTED;
select_lex->uncacheable&= ~UNCACHEABLE_DEPENDENT; select_lex->uncacheable&= ~UNCACHEABLE_DEPENDENT_INJECTED;
/* /*
Reset the "LIMIT 1" set in Item_exists_subselect::fix_length_and_dec. Reset the "LIMIT 1" set in Item_exists_subselect::fix_length_and_dec.
@@ -3884,6 +3916,9 @@ bool JOIN::choose_subquery_plan(table_map join_tables)
if (in_subs->inject_in_to_exists_cond(this)) if (in_subs->inject_in_to_exists_cond(this))
return TRUE; return TRUE;
in_subs->unit->uncacheable|= UNCACHEABLE_DEPENDENT_INJECTED;
select_lex->uncacheable|= UNCACHEABLE_DEPENDENT_INJECTED;
select_limit= 1;
} }
else else
DBUG_ASSERT(FALSE); DBUG_ASSERT(FALSE);

1
sql/opt_subselect.h
View File

@@ -6,6 +6,7 @@
int check_and_do_in_subquery_rewrites(JOIN *join); int check_and_do_in_subquery_rewrites(JOIN *join);
bool convert_join_subqueries_to_semijoins(JOIN *join); bool convert_join_subqueries_to_semijoins(JOIN *join);
bool convert_max_min_subquery(JOIN *join);
int pull_out_semijoin_tables(JOIN *join); int pull_out_semijoin_tables(JOIN *join);
bool optimize_semijoin_nests(JOIN *join, table_map all_table_map); bool optimize_semijoin_nests(JOIN *join, table_map all_table_map);

7
sql/sql_class.h
View File

@@ -2727,7 +2727,12 @@ public:
class select_result_interceptor: public select_result class select_result_interceptor: public select_result
{ {
public: public:
select_result_interceptor() {} /* Remove gcc warning */ select_result_interceptor()
{
DBUG_ENTER("select_result_interceptor::select_result_interceptor");
DBUG_PRINT("enter", ("this 0x%lx", (ulong) this));
DBUG_VOID_RETURN;
} /* Remove gcc warning */
uint field_count(List<Item> &fields) const { return 0; } uint field_count(List<Item> &fields) const { return 0; }
bool send_fields(List<Item> &fields, uint flag) { return FALSE; } bool send_fields(List<Item> &fields, uint flag) { return FALSE; }
}; };

20
sql/sql_lex.cc
View File

@@ -1942,18 +1942,19 @@ bool st_select_lex::mark_as_dependent(THD *thd, st_select_lex *last, Item *depen
SELECT_LEX *s= this; SELECT_LEX *s= this;
do do
{ {
if (!(s->uncacheable & UNCACHEABLE_DEPENDENT)) if (!(s->uncacheable & UNCACHEABLE_DEPENDENT_GENERATED))
{ {
// Select is dependent of outer select // Select is dependent of outer select
s->uncacheable= (s->uncacheable & ~UNCACHEABLE_UNITED) | s->uncacheable= (s->uncacheable & ~UNCACHEABLE_UNITED) |
UNCACHEABLE_DEPENDENT; UNCACHEABLE_DEPENDENT_GENERATED;
SELECT_LEX_UNIT *munit= s->master_unit(); SELECT_LEX_UNIT *munit= s->master_unit();
munit->uncacheable= (munit->uncacheable & ~UNCACHEABLE_UNITED) | munit->uncacheable= (munit->uncacheable & ~UNCACHEABLE_UNITED) |
UNCACHEABLE_DEPENDENT; UNCACHEABLE_DEPENDENT_GENERATED;
for (SELECT_LEX *sl= munit->first_select(); sl ; sl= sl->next_select()) for (SELECT_LEX *sl= munit->first_select(); sl ; sl= sl->next_select())
{ {
if (sl != s && if (sl != s &&
!(sl->uncacheable & (UNCACHEABLE_DEPENDENT | UNCACHEABLE_UNITED))) !(sl->uncacheable & (UNCACHEABLE_DEPENDENT_GENERATED |
UNCACHEABLE_UNITED)))
sl->uncacheable|= UNCACHEABLE_UNITED; sl->uncacheable|= UNCACHEABLE_UNITED;
} }
} }
@@ -2178,17 +2179,6 @@ void st_select_lex::print_limit(THD *thd,
subs_type == Item_subselect::IN_SUBS || subs_type == Item_subselect::IN_SUBS ||
subs_type == Item_subselect::ALL_SUBS) subs_type == Item_subselect::ALL_SUBS)
{ {
DBUG_ASSERT(!item->fixed ||
/*
If not using materialization both:
select_limit == 1, and there should be no offset_limit.
*/
(((subs_type == Item_subselect::IN_SUBS) &&
((Item_in_subselect*)item)->in_strategy &
SUBS_MATERIALIZATION) ?
TRUE :
(select_limit->val_int() == 1LL) &&
offset_limit == 0));
return; return;
} }
} }

3
sql/sql_lex.h
View File

@@ -417,7 +417,8 @@ public:
/* /*
result of this query can't be cached, bit field, can be : result of this query can't be cached, bit field, can be :
UNCACHEABLE_DEPENDENT UNCACHEABLE_DEPENDENT_GENERATED
UNCACHEABLE_DEPENDENT_INJECTED
UNCACHEABLE_RAND UNCACHEABLE_RAND
UNCACHEABLE_SIDEEFFECT UNCACHEABLE_SIDEEFFECT
UNCACHEABLE_EXPLAIN UNCACHEABLE_EXPLAIN

43
sql/sql_select.cc
View File

@@ -736,11 +736,28 @@ JOIN::prepare(Item ***rref_pointer_array,
if (!procedure && result && result->prepare(fields_list, unit_arg)) if (!procedure && result && result->prepare(fields_list, unit_arg))
goto err; /* purecov: inspected */ goto err; /* purecov: inspected */
unit= unit_arg;
if (prepare_stage2())
goto err;
DBUG_RETURN(0); // All OK
err:
delete procedure; /* purecov: inspected */
procedure= 0;
DBUG_RETURN(-1); /* purecov: inspected */
}
bool JOIN::prepare_stage2()
{
bool res= TRUE;
DBUG_ENTER("JOIN::prepare_stage2");
/* Init join struct */ /* Init join struct */
count_field_types(select_lex, &tmp_table_param, all_fields, 0); count_field_types(select_lex, &tmp_table_param, all_fields, 0);
ref_pointer_array_size= all_fields.elements*sizeof(Item*); ref_pointer_array_size= all_fields.elements*sizeof(Item*);
this->group= group_list != 0; this->group= group_list != 0;
unit= unit_arg;
if (tmp_table_param.sum_func_count && !group_list) if (tmp_table_param.sum_func_count && !group_list)
implicit_grouping= TRUE; implicit_grouping= TRUE;
@@ -757,12 +774,9 @@ JOIN::prepare(Item ***rref_pointer_array,
if (alloc_func_list()) if (alloc_func_list())
goto err; goto err;
DBUG_RETURN(0); // All OK res= FALSE;
err: err:
delete procedure; /* purecov: inspected */ DBUG_RETURN(res); /* purecov: inspected */
procedure= 0;
DBUG_RETURN(-1); /* purecov: inspected */
} }
@@ -795,7 +809,8 @@ JOIN::optimize()
set_allowed_join_cache_types(); set_allowed_join_cache_types();
/* dump_TABLE_LIST_graph(select_lex, select_lex->leaf_tables); */ /* dump_TABLE_LIST_graph(select_lex, select_lex->leaf_tables); */
if (convert_join_subqueries_to_semijoins(this)) if (convert_max_min_subquery(this) ||
convert_join_subqueries_to_semijoins(this))
DBUG_RETURN(1); /* purecov: inspected */ DBUG_RETURN(1); /* purecov: inspected */
/* dump_TABLE_LIST_graph(select_lex, select_lex->leaf_tables); */ /* dump_TABLE_LIST_graph(select_lex, select_lex->leaf_tables); */
@@ -8599,6 +8614,10 @@ bool error_if_full_join(JOIN *join)
void JOIN_TAB::cleanup() void JOIN_TAB::cleanup()
{ {
DBUG_ENTER("JOIN_TAB::cleanup");
DBUG_PRINT("enter", ("table %s.%s",
(table ? table->s->db.str : "?"),
(table ? table->s->table_name.str : "?")));
delete select; delete select;
select= 0; select= 0;
delete quick; delete quick;
@@ -8620,6 +8639,7 @@ void JOIN_TAB::cleanup()
table->reginfo.join_tab= 0; table->reginfo.join_tab= 0;
} }
end_read_record(&read_record); end_read_record(&read_record);
DBUG_VOID_RETURN;
} }
@@ -8740,7 +8760,8 @@ void JOIN::join_free()
Optimization: if not EXPLAIN and we are done with the JOIN, Optimization: if not EXPLAIN and we are done with the JOIN,
free all tables. free all tables.
*/ */
bool full= (!select_lex->uncacheable && !thd->lex->describe); bool full= (!(select_lex->uncacheable) &&
!thd->lex->describe);
bool can_unlock= full; bool can_unlock= full;
DBUG_ENTER("JOIN::join_free"); DBUG_ENTER("JOIN::join_free");
@@ -8804,6 +8825,7 @@ void JOIN::join_free()
void JOIN::cleanup(bool full) void JOIN::cleanup(bool full)
{ {
DBUG_ENTER("JOIN::cleanup"); DBUG_ENTER("JOIN::cleanup");
DBUG_PRINT("enter", ("full %u", (uint) full));
if (table) if (table)
{ {
@@ -8829,7 +8851,11 @@ void JOIN::cleanup(bool full)
for (tab= join_tab, end= tab+tables; tab != end; tab++) for (tab= join_tab, end= tab+tables; tab != end; tab++)
{ {
if (tab->table) if (tab->table)
{
DBUG_PRINT("info", ("close index: %s.%s", tab->table->s->db.str,
tab->table->s->table_name.str));
tab->table->file->ha_index_or_rnd_end(); tab->table->file->ha_index_or_rnd_end();
}
} }
} }
} }
@@ -20304,6 +20330,7 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type)
change select_result object of JOIN. change select_result object of JOIN.
@param res new select_result object @param res new select_result object
@param temp temporary assignment
@retval @retval
FALSE OK FALSE OK

1
sql/sql_select.h
View File

@@ -999,6 +999,7 @@ public:
COND *conds, uint og_num, ORDER *order, ORDER *group, COND *conds, uint og_num, ORDER *order, ORDER *group,
Item *having, ORDER *proc_param, SELECT_LEX *select, Item *having, ORDER *proc_param, SELECT_LEX *select,
SELECT_LEX_UNIT *unit); SELECT_LEX_UNIT *unit);
bool prepare_stage2();
int optimize(); int optimize();
int reinit(); int reinit();
int init_execution(); int init_execution();