diff options
Diffstat (limited to 'mysql-test/main/subselect.result')
| -rw-r--r-- | mysql-test/main/subselect.result | 262 |
1 files changed, 176 insertions, 86 deletions
diff --git a/mysql-test/main/subselect.result b/mysql-test/main/subselect.result index e0cf1e61d95..6e0c956b77e 100644 --- a/mysql-test/main/subselect.result +++ b/mysql-test/main/subselect.result @@ -118,27 +118,27 @@ ROW(1,2,3) > (SELECT 1,2,1) SELECT ROW(1,2,3) = (SELECT 1,2,NULL); ROW(1,2,3) = (SELECT 1,2,NULL) NULL -SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'a'); -(SELECT 1.5,2,'a') = ROW(1.5,2,'a') +SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'a') AS m; +m 1 -SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'b'); -(SELECT 1.5,2,'a') = ROW(1.5,2,'b') +SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'b') AS m; +m 0 -SELECT (SELECT 1.5,2,'a') = ROW('1.5b',2,'b'); -(SELECT 1.5,2,'a') = ROW('1.5b',2,'b') +SELECT (SELECT 1.5,2,'a') = ROW('1.5b',2,'b') AS m; +m 0 Warnings: Warning 1292 Truncated incorrect DOUBLE value: '1.5b' -SELECT (SELECT 'b',2,'a') = ROW(1.5,2,'a'); -(SELECT 'b',2,'a') = ROW(1.5,2,'a') +SELECT (SELECT 'b',2,'a') = ROW(1.5,2,'a') AS m; +m 0 Warnings: Warning 1292 Truncated incorrect DOUBLE value: 'b' -SELECT (SELECT 1.5,2,'a') = ROW(1.5,'2','a'); -(SELECT 1.5,2,'a') = ROW(1.5,'2','a') +SELECT (SELECT 1.5,2,'a') = ROW(1.5,'2','a') AS m; +m 1 -SELECT (SELECT 1.5,'c','a') = ROW(1.5,2,'a'); -(SELECT 1.5,'c','a') = ROW(1.5,2,'a') +SELECT (SELECT 1.5,'c','a') = ROW(1.5,2,'a') AS m; +m 0 Warnings: Warning 1292 Truncated incorrect DECIMAL value: 'c' @@ -228,19 +228,26 @@ a 2 select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1); a -select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4; -b (select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) +select +b, +(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) as m +from t4; +b m 8 7.5000 8 4.5000 9 7.5000 -explain extended select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4; +explain extended +select +b, +(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) as m +from t4; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t4 ALL NULL NULL NULL NULL 3 100.00 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where Warnings: Note 1276 Field or reference 'test.t4.a' of SELECT #3 was resolved in SELECT #1 -Note 1003 /* select#1 */ select `test`.`t4`.`b` AS `b`,<expr_cache><`test`.`t4`.`a`>((/* select#2 */ select avg(`test`.`t2`.`a` + (/* select#3 */ select min(`test`.`t3`.`a`) from `test`.`t3` where `test`.`t3`.`a` >= `test`.`t4`.`a`)) from `test`.`t2`)) AS `(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)` from `test`.`t4` +Note 1003 /* select#1 */ select `test`.`t4`.`b` AS `b`,<expr_cache><`test`.`t4`.`a`>((/* select#2 */ select avg(`test`.`t2`.`a` + (/* select#3 */ select min(`test`.`t3`.`a`) from `test`.`t3` where `test`.`t3`.`a` >= `test`.`t4`.`a`)) from `test`.`t2`)) AS `m` from `test`.`t4` select * from t3 where exists (select * from t2 where t2.b=t3.a); a 7 @@ -307,21 +314,34 @@ select b,max(a) as ma from t4 group by b having b >= (select max(t2.a) from t2 w b ma 7 12 create table t5 (a int); -select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; -(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +select +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) as m, +a +from t2; +m a NULL 1 2 2 insert into t5 values (5); -select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; -(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +select +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) as m, +a +from t2; +m a NULL 1 2 2 insert into t5 values (2); -select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; -(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +select +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) as m, +a +from t2; +m a NULL 1 2 2 -explain extended select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +explain extended +select +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) as m, +a +from t2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 @@ -330,7 +350,7 @@ NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL Warnings: Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.a' of SELECT #3 was resolved in SELECT #1 -Note 1003 /* select#1 */ select <expr_cache><`test`.`t2`.`a`>((/* select#2 */ select 2 from dual where 2 = `test`.`t2`.`a` union /* select#3 */ select `test`.`t5`.`a` from `test`.`t5` where `test`.`t5`.`a` = `test`.`t2`.`a`)) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2` +Note 1003 /* select#1 */ select <expr_cache><`test`.`t2`.`a`>((/* select#2 */ select 2 from dual where 2 = `test`.`t2`.`a` union /* select#3 */ select `test`.`t5`.`a` from `test`.`t5` where `test`.`t5`.`a` = `test`.`t2`.`a`)) AS `m`,`test`.`t2`.`a` AS `a` from `test`.`t2` select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2; ERROR 21000: Subquery returns more than 1 row create table t6 (patient_uq int, clinic_uq int, index i1 (clinic_uq)); @@ -486,8 +506,11 @@ SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING t mot topic date pseudo joce 40143 2002-10-22 joce joce 43506 2002-10-22 joce -SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) from t2; -mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) +SELECT +*, +topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) AS m +FROM t2; +mot topic date pseudo m joce 40143 2002-10-22 joce 1 joce 43506 2002-10-22 joce 1 SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2); @@ -505,8 +528,11 @@ joce 40143 2002-10-22 joce SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); mot topic date pseudo joce 40143 2002-10-22 joce -SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) from t2; -mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) +SELECT +*, +topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) AS m +FROM t2; +mot topic date pseudo m joce 40143 2002-10-22 joce 1 joce 43506 2002-10-22 joce 0 drop table t1,t2; @@ -890,6 +916,25 @@ NULL select 1.5 > ANY (SELECT * from t1); 1.5 > ANY (SELECT * from t1) NULL +update t1 set a=NULL where a=2.5; +select 1.5 IN (SELECT * from t1); +1.5 IN (SELECT * from t1) +1 +select 3.5 IN (SELECT * from t1); +3.5 IN (SELECT * from t1) +1 +select 10.5 IN (SELECT * from t1); +10.5 IN (SELECT * from t1) +NULL +select 1.5 > ALL (SELECT * from t1); +1.5 > ALL (SELECT * from t1) +0 +select 10.5 > ALL (SELECT * from t1); +10.5 > ALL (SELECT * from t1) +NULL +select 1.5 > ANY (SELECT * from t1); +1.5 > ANY (SELECT * from t1) +NULL select 10.5 > ANY (SELECT * from t1); 10.5 > ANY (SELECT * from t1) 1 @@ -900,6 +945,20 @@ Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 Note 1249 Select 2 was reduced during optimization Note 1003 select `test`.`t1`.`a` + 1 AS `(select a+1)` from `test`.`t1` +explain extended select (select a+1) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1249 Select 2 was reduced during optimization +Note 1003 select `test`.`t1`.`a` + 1 AS `(select a+1)` from `test`.`t1` +explain extended select (select a+1) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1249 Select 2 was reduced during optimization +Note 1003 select `test`.`t1`.`a` + 1 AS `(select a+1)` from `test`.`t1` select (select a+1) from t1; (select a+1) 2.5 @@ -1547,8 +1606,8 @@ create table t3 (a int, b int); insert into t1 values (0,100),(1,2), (1,3), (2,2), (2,7), (2,-1), (3,10); insert into t2 values (0,0), (1,1), (2,1), (3,1), (4,1); insert into t3 values (3,3), (2,2), (1,1); -select a,(select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) from t3; -a (select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) +select a,(select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) as m from t3; +a m 3 1 2 2 1 2 @@ -1746,8 +1805,8 @@ CREATE TABLE `t3` (`taskgenid` mediumint(9) NOT NULL auto_increment,`dbid` int(1 INSERT INTO `t3` (`taskgenid`, `dbid`, `taskid`, `mon`, `tues`,`wed`, `thur`, `fri`, `sat`, `sun`, `how_often`, `userid`, `active`) VALUES (1,-1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1); CREATE TABLE `t4` (`task_id` smallint(6) NOT NULL default '0',`description` varchar(200) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; INSERT INTO `t4` (`task_id`, `description`) VALUES (1, 'Daily Check List'),(2, 'Weekly Status'); -select dbid, name, (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') from t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND t4.task_id = taskid; -dbid name (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') +select dbid, name, (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') as m FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') as m from t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND t4.task_id = taskid; +dbid name m -1 Valid 1 -1 Valid 2 1 -1 Should Not Return 0 @@ -3809,9 +3868,10 @@ SELECT (SELECT COUNT(DISTINCT t1.b) from t2) FROM t1 GROUP BY t1.a; 2 1 1 -SELECT (SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) +SELECT +(SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) AS m FROM t1 GROUP BY t1.a; -(SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) +m 2 1 1 @@ -3821,9 +3881,9 @@ COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b)) 1 1 1 1 SELECT COUNT(DISTINCT t1.b), -(SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) +(SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) AS m FROM t1 GROUP BY t1.a; -COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) +COUNT(DISTINCT t1.b) m 2 2 1 1 1 1 @@ -3847,16 +3907,10 @@ SELECT ( SELECT COUNT(DISTINCT t1.b) ) ) -FROM t1 GROUP BY t1.a LIMIT 1) +FROM t1 GROUP BY t1.a LIMIT 1) AS m FROM t1 t2 GROUP BY t2.a; -( -SELECT ( -SELECT ( -SELECT COUNT(DISTINCT t1.b) -) -) -FROM t1 GROUP BY t1.a LIMIT 1) +m 2 2 2 @@ -6453,11 +6507,10 @@ CREATE TABLE t3 (a int, b int); INSERT INTO t3 VALUES (10,7), (0,7); SELECT SUM(DISTINCT b), (SELECT t2.a FROM t1 JOIN t2 ON t2.c != 0 -WHERE t.a != 0 AND t2.a != 0) +WHERE t.a != 0 AND t2.a != 0) AS m FROM (SELECT * FROM t3) AS t GROUP BY 2; -SUM(DISTINCT b) (SELECT t2.a FROM t1 JOIN t2 ON t2.c != 0 -WHERE t.a != 0 AND t2.a != 0) +SUM(DISTINCT b) m 7 NULL SELECT SUM(DISTINCT b), (SELECT t2.a FROM t1,t2 WHERE t.a != 0 or 1=2 LIMIT 1) @@ -6590,66 +6643,93 @@ CREATE TABLE t3 (f3a int default 1, f3b int default 2); INSERT INTO t3 VALUES (1,1),(2,2); set @old_optimizer_switch = @@session.optimizer_switch; set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,subquery_cache=off,semijoin=off'; -SELECT (SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) FROM t2; -(SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) +SELECT +(SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) FROM t2; -(SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) +SELECT +(SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) FROM t2; -(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) +SELECT +(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1); -(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) +SELECT +(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) AS m; +m NULL -SELECT (SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) FROM t2; -(SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) +SELECT +(SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) FROM t2; -(SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) +SELECT +(SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) FROM t2; -(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) +SELECT +(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1); -(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) +SELECT +(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) AS m; +m NULL set @@session.optimizer_switch=@old_optimizer_switch; -SELECT (SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) FROM t2; -(SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) +SELECT +(SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) FROM t2; -(SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) +SELECT +(SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) FROM t2; -(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) +SELECT +(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1); -(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) +SELECT +(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) AS m; +m NULL -SELECT (SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) FROM t2; +SELECT +(SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) FROM t2 AS m; (SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) NULL NULL -SELECT (SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) FROM t2; -(SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) +SELECT +(SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) FROM t2; -(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) +SELECT +(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) AS m +FROM t2; +m NULL NULL -SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1); -(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) +SELECT +(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) AS m; +m NULL select (null, null) = (null, null); (null, null) = (null, null) @@ -6695,8 +6775,10 @@ INSERT INTO t2 VALUES (1); CREATE TABLE t3 ( c INT ); INSERT INTO t3 VALUES (4),(5); SET optimizer_switch='subquery_cache=off'; -SELECT ( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) ) FROM t1; -( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) ) +SELECT +( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) ) AS m +FROM t1; +m 1 NULL SELECT ( SELECT b FROM t2 WHERE b = a OR b * 0) FROM t1; @@ -6913,7 +6995,9 @@ CREATE TABLE t3 (c INT); INSERT INTO t3 VALUES (8),(3); set @@expensive_subquery_limit= 0; EXPLAIN -SELECT (SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) +SELECT +(SELECT MIN(b) FROM t1, t2 +WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) AS m FROM t2 alias1, t1 alias2, t1 alias3; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY alias1 ALL NULL NULL NULL NULL 2 @@ -6923,9 +7007,11 @@ id select_type table type possible_keys key key_len ref rows Extra 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) 3 SUBQUERY t3 ALL NULL NULL NULL NULL 2 flush status; -SELECT (SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) +SELECT +(SELECT MIN(b) FROM t1, t2 +WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) AS m FROM t2 alias1, t1 alias2, t1 alias3; -(SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) +m NULL NULL NULL @@ -6951,7 +7037,9 @@ Handler_read_rnd_deleted 0 Handler_read_rnd_next 22 set @@expensive_subquery_limit= default; EXPLAIN -SELECT (SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) +SELECT +(SELECT MIN(b) FROM t1, t2 +WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) AS m FROM t2 alias1, t1 alias2, t1 alias3; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY alias1 ALL NULL NULL NULL NULL 2 @@ -6961,9 +7049,11 @@ id select_type table type possible_keys key key_len ref rows Extra 2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) 3 SUBQUERY t3 ALL NULL NULL NULL NULL 2 flush status; -SELECT (SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) +SELECT +(SELECT MIN(b) FROM t1, t2 +WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) AS m FROM t2 alias1, t1 alias2, t1 alias3; -(SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3))) +m NULL NULL NULL |