~ubuntu-branches/ubuntu/trusty/mariadb-5.5/trusty-proposed

explain extended (select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where

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2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using filesort

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3 UNION t4 ALL NULL NULL NULL NULL 3 100.00 Using where

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4 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00

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NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL

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Warnings:

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Note 1003 (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = (select `test`.`t3`.`a` from `test`.`t3` order by 1 desc limit 1))) union (select `test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t4` where (`test`.`t4`.`b` = (select (max(`test`.`t2`.`a`) * 4) from `test`.`t2`)) order by `a`)

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select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;

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(select a from t3 where a<t2.a*4 order by 1 desc limit 1) a

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3 1

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7 2

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select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from

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(select * from t2 where a>1) as tt;

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(select t3.a from t3 where a<8 order by 1 desc limit 1) a

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7 2

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set @tmp_optimizer_switch=@@optimizer_switch;

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set optimizer_switch='derived_merge=off,derived_with_keys=off';

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explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from

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(select * from t2 where a>1) as tt;

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY <derived3> ALL NULL NULL NULL NULL 2 100.00

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3 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using where

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2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort

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Warnings:

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Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`

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set optimizer_switch=@tmp_optimizer_switch;

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select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);

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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);

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221

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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);

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select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;

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b (select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)

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8 7.5000

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8 4.5000

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9 7.5000

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explain extended select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY t4 ALL NULL NULL NULL NULL 3 100.00

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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00

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3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where

234

Warnings:

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Note 1276 Field or reference 'test.t4.a' of SELECT #3 was resolved in SELECT #1

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Note 1003 select `test`.`t4`.`b` AS `b`,<expr_cache><`test`.`t4`.`a`>((select avg((`test`.`t2`.`a` + (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`

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select * from t3 where exists (select * from t2 where t2.b=t3.a);

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select * from t3 where not exists (select * from t2 where t2.b=t3.a);

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select * from t3 where a in (select b from t2);

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select * from t3 where a not in (select b from t2);

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select * from t3 where a = some (select b from t2);

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select * from t3 where a <> any (select b from t2);

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select * from t3 where a = all (select b from t2);

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select * from t3 where a <> all (select b from t2);

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insert into t2 values (100, 5);

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select * from t3 where a < any (select b from t2);

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select * from t3 where a < all (select b from t2);

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select * from t3 where a >= any (select b from t2);

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explain extended select * from t3 where a >= any (select b from t2);

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where

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2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00

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Warnings:

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Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,((select min(`test`.`t2`.`b`) from `test`.`t2`) <= <cache>(`test`.`t3`.`a`))))

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select * from t3 where a >= all (select b from t2);

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delete from t2 where a=100;

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select * from t3 where a in (select a,b from t2);

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ERROR 21000: Operand should contain 1 column(s)

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select * from t3 where a in (select * from t2);

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ERROR 21000: Operand should contain 1 column(s)

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insert into t4 values (12,7),(1,7),(10,9),(9,6),(7,6),(3,9),(1,10);

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select b,max(a) as ma from t4 group by b having b < (select max(t2.a) from t2 where t2.b=t4.b);

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b ma

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insert into t2 values (2,10);

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select b,max(a) as ma from t4 group by b having ma < (select max(t2.a) from t2 where t2.b=t4.b);

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b ma

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10 1

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delete from t2 where a=2 and b=10;

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select b,max(a) as ma from t4 group by b having b >= (select max(t2.a) from t2 where t2.b=t4.b);

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b ma

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7 12

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create table t5 (a int);

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select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;

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(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a

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NULL 1

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2 2

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insert into t5 values (5);

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select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;

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(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a

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NULL 1

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2 2

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insert into t5 values (2);

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select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;

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(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a

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NULL 1

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2 2

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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;

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00

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2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00

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3 DEPENDENT UNION t5 ALL NULL NULL NULL NULL 2 100.00 Using where

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NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL

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Warnings:

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Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1

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Note 1276 Field or reference 'test.t2.a' of SELECT #3 was resolved in SELECT #1

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Note 1003 select <expr_cache><`test`.`t2`.`a`>((select 2 from dual where (2 = `test`.`t2`.`a`) union 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`

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select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2;

328

ERROR 21000: Subquery returns more than 1 row

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create table t6 (patient_uq int, clinic_uq int, index i1 (clinic_uq));

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create table t7( uq int primary key, name char(25));

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insert into t7 values(1,"Oblastnaia bolnitsa"),(2,"Bolnitsa Krasnogo Kresta");

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insert into t6 values (1,1),(1,2),(2,2),(1,3);

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select * from t6 where exists (select * from t7 where uq = clinic_uq);

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patient_uq clinic_uq

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1 1

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1 2

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2 2

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explain extended select * from t6 where exists (select * from t7 where uq = clinic_uq);

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY t6 ALL NULL NULL NULL NULL 4 100.00 Using where

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2 DEPENDENT SUBQUERY t7 eq_ref PRIMARY PRIMARY 4 test.t6.clinic_uq 1 100.00 Using index

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Warnings:

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Note 1276 Field or reference 'test.t6.clinic_uq' of SELECT #2 was resolved in SELECT #1

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Note 1003 select `test`.`t6`.`patient_uq` AS `patient_uq`,`test`.`t6`.`clinic_uq` AS `clinic_uq` from `test`.`t6` where <expr_cache><`test`.`t6`.`clinic_uq`>(exists(select 1 from `test`.`t7` where (`test`.`t7`.`uq` = `test`.`t6`.`clinic_uq`)))

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select * from t1 where a= (select a from t2,t4 where t2.b=t4.b);

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ERROR 23000: Column 'a' in field list is ambiguous

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drop table t1,t2,t3;

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CREATE TABLE t3 (a varchar(20),b char(1) NOT NULL default '0');

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INSERT INTO t3 VALUES ('W','a'),('A','c'),('J','b');

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CREATE TABLE t2 (a varchar(20),b int NOT NULL default '0');

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INSERT INTO t2 VALUES ('W','1'),('A','3'),('J','2');

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CREATE TABLE t1 (a varchar(20),b date NOT NULL default '0000-00-00');

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INSERT INTO t1 VALUES ('W','1732-02-22'),('A','1735-10-30'),('J','1743-04-13');

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SELECT * FROM t1 WHERE b = (SELECT MIN(b) FROM t1);

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a b

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W 1732-02-22

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SELECT * FROM t2 WHERE b = (SELECT MIN(b) FROM t2);

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a b

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W 1

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SELECT * FROM t3 WHERE b = (SELECT MIN(b) FROM t3);

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a b

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W a

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CREATE TABLE `t8` (

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`pseudo` varchar(35) character set latin1 NOT NULL default '',

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`email` varchar(60) character set latin1 NOT NULL default '',

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PRIMARY KEY (`pseudo`),

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UNIQUE KEY `email` (`email`)

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) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC;

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INSERT INTO t8 (pseudo,email) VALUES ('joce','test');

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INSERT INTO t8 (pseudo,email) VALUES ('joce1','test1');

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INSERT INTO t8 (pseudo,email) VALUES ('2joce1','2test1');

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EXPLAIN EXTENDED SELECT pseudo,(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce')) FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce');

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY t8 const PRIMARY PRIMARY 37 const 1 100.00 Using index

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4 SUBQUERY t8 const PRIMARY PRIMARY 37 const 1 100.00 Using index

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2 SUBQUERY t8 const PRIMARY PRIMARY 37 const 1 100.00

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3 SUBQUERY t8 const PRIMARY PRIMARY 37 const 1 100.00 Using index

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Warnings:

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Note 1003 select 'joce' AS `pseudo`,(select 'test' from `test`.`t8` where 1) AS `(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'))` from `test`.`t8` where 1

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SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo,email FROM

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t8 WHERE pseudo='joce');

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ERROR 21000: Operand should contain 1 column(s)

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SELECT pseudo FROM t8 WHERE pseudo=(SELECT * FROM t8 WHERE

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pseudo='joce');

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ERROR 21000: Operand should contain 1 column(s)

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SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce');

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pseudo

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joce

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SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo LIKE '%joce%');

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ERROR 21000: Subquery returns more than 1 row

391

drop table if exists t1,t2,t3,t4,t5,t6,t7,t8;

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CREATE TABLE `t1` (

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`topic` mediumint(8) unsigned NOT NULL default '0',

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`date` date NOT NULL default '0000-00-00',

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`pseudo` varchar(35) character set latin1 NOT NULL default '',

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PRIMARY KEY (`pseudo`,`date`,`topic`),

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KEY `topic` (`topic`)

398

) ENGINE=MyISAM ROW_FORMAT=DYNAMIC;

399

INSERT INTO t1 (topic,date,pseudo) VALUES

400

('43506','2002-10-02','joce'),('40143','2002-08-03','joce');

401

EXPLAIN EXTENDED SELECT DISTINCT date FROM t1 WHERE date='2002-08-03';

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 SIMPLE t1 index NULL PRIMARY 43 NULL 2 100.00 Using where; Using index

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Warnings:

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Note 1003 select distinct `test`.`t1`.`date` AS `date` from `test`.`t1` where (`test`.`t1`.`date` = '2002-08-03')

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EXPLAIN EXTENDED SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03');

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used

409

2 SUBQUERY t1 index NULL PRIMARY 43 NULL 2 100.00 Using where; Using index

410

Warnings:

411

Note 1003 select (select distinct `test`.`t1`.`date` from `test`.`t1` where (`test`.`t1`.`date` = '2002-08-03')) AS `(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03')`

412

SELECT DISTINCT date FROM t1 WHERE date='2002-08-03';

413

date

414

2002-08-03

415

SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03');

416

(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03')

417

2002-08-03

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SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1) UNION ALL SELECT 1;

419

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SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION ALL SELECT 1) UNION SELECT 1;

424

ERROR 21000: Subquery returns more than 1 row

425

EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1);

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id select_type table type possible_keys key key_len ref rows filtered Extra

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1 PRIMARY t1 index NULL topic 3 NULL 2 100.00 Using index

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2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used

429

3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used

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NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL

431

Warnings:

432

Note 1003 select 1 AS `1` from `test`.`t1` where 1

433

drop table t1;

434

CREATE TABLE `t1` (

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`numeropost` mediumint(8) unsigned NOT NULL auto_increment,

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`maxnumrep` int(10) unsigned NOT NULL default '0',

437

PRIMARY KEY (`numeropost`),

438

UNIQUE KEY `maxnumrep` (`maxnumrep`)

439

) ENGINE=MyISAM ROW_FORMAT=FIXED;

440

INSERT INTO t1 (numeropost,maxnumrep) VALUES (40143,1),(43506,2);

441

CREATE TABLE `t2` (

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`mot` varchar(30) NOT NULL default '',

443

`topic` mediumint(8) unsigned NOT NULL default '0',

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`date` date NOT NULL default '0000-00-00',

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`pseudo` varchar(35) NOT NULL default '',

446

PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`)

447

) ENGINE=MyISAM ROW_FORMAT=DYNAMIC;

448

INSERT INTO t2 (mot,topic,date,pseudo) VALUES ('joce','40143','2002-10-22','joce'), ('joce','43506','2002-10-22','joce');

449

select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1);

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40143

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SELECT numeropost,maxnumrep FROM t1 WHERE exists (SELECT 1 FROM t2 WHERE (mot='joce') AND date >= '2002-10-21' AND t1.numeropost = t2.topic) ORDER BY maxnumrep DESC LIMIT 0, 20;

453

numeropost maxnumrep

454

43506 2

455

40143 1

456

SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) b;

457

ERROR 42S22: Unknown column 'a' in 'having clause'

458

SELECT 1 IN (SELECT 1 FROM t2 HAVING a);

459

ERROR 42S22: Unknown column 'a' in 'having clause'

460

SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic);

461

mot topic date pseudo

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joce 40143 2002-10-22 joce

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joce 43506 2002-10-22 joce

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SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100);

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mot topic date pseudo

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SELECT * from t2 where topic IN (SELECT SUM(topic) FROM t1);

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mot topic date pseudo

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SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic);

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mot topic date pseudo

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joce 40143 2002-10-22 joce

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joce 43506 2002-10-22 joce

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SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100);

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mot topic date pseudo

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SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1);

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mot topic date pseudo

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SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic);

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mot topic date pseudo

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SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100);

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mot topic date pseudo

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joce 40143 2002-10-22 joce

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joce 43506 2002-10-22 joce

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SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) from t2;

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mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100)

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joce 40143 2002-10-22 joce 1

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joce 43506 2002-10-22 joce 1

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SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2);

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mot topic date pseudo

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SELECT * from t2 where topic <> any (SELECT SUM(topic) FROM t2);

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mot topic date pseudo

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joce 40143 2002-10-22 joce

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joce 43506 2002-10-22 joce

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SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);

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mot topic date pseudo

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joce 40143 2002-10-22 joce

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SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);

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mot topic date pseudo

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joce 40143 2002-10-22 joce

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SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);

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mot topic date pseudo

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joce 40143 2002-10-22 joce

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SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) from t2;

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mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000)

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joce 40143 2002-10-22 joce 1

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joce 43506 2002-10-22 joce 0

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drop table t1,t2;

506

CREATE TABLE `t1` (

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`numeropost` mediumint(8) unsigned NOT NULL auto_increment,

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`maxnumrep` int(10) unsigned NOT NULL default '0',

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PRIMARY KEY (`numeropost`),

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UNIQUE KEY `maxnumrep` (`maxnumrep`)

511

) ENGINE=MyISAM ROW_FORMAT=FIXED;

512

INSERT INTO t1 (numeropost,maxnumrep) VALUES (1,0),(2,1);

513

select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1);

514

ERROR 21000: Subquery returns more than 1 row

515

select numeropost as a FROM t1 ORDER BY (SELECT 1 FROM t1 HAVING a=1);

516

ERROR 21000: Subquery returns more than 1 row

517

show warnings;

518

Level Code Message

519

Error 1242 Subquery returns more than 1 row

520

Error 1028 Sort aborted: Subquery returns more than 1 row

521

drop table t1;

522

create table t1 (a int);

523

insert into t1 values (1),(2),(3);

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(select * from t1) union (select * from t1) order by (select a from t1 limit 1);

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drop table t1;

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CREATE TABLE t1 (field char(1) NOT NULL DEFAULT 'b');

531

INSERT INTO t1 VALUES ();

532

SELECT field FROM t1 WHERE 1=(SELECT 1 UNION ALL SELECT 1 FROM (SELECT 1) a HAVING field='b');

533

ERROR 21000: Subquery returns more than 1 row

534

drop table t1;

535

CREATE TABLE `t1` (

536

`numeropost` mediumint(8) unsigned NOT NULL default '0',

537

`numreponse` int(10) unsigned NOT NULL auto_increment,

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`pseudo` varchar(35) NOT NULL default '',

539

PRIMARY KEY (`numeropost`,`numreponse`),

540

UNIQUE KEY `numreponse` (`numreponse`),

541

KEY `pseudo` (`pseudo`,`numeropost`)

542

) ENGINE=MyISAM;

543

SELECT (SELECT numeropost FROM t1 HAVING numreponse=a),numreponse FROM (SELECT * FROM t1) as a;

544

ERROR 42S22: Reference 'numreponse' not supported (forward reference in item list)

545

SELECT numreponse, (SELECT numeropost FROM t1 HAVING numreponse=a) FROM (SELECT * FROM t1) as a;

546

ERROR 42S22: Unknown column 'a' in 'having clause'

547

SELECT numreponse, (SELECT numeropost FROM t1 HAVING numreponse=1) FROM (SELECT * FROM t1) as a;

548

numreponse (SELECT numeropost FROM t1 HAVING numreponse=1)

549

INSERT INTO t1 (numeropost,numreponse,pseudo) VALUES (1,1,'joce'),(1,2,'joce'),(1,3,'test');

550

EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT 1 FROM t1 WHERE numeropost='1');

551

ERROR 21000: Subquery returns more than 1 row

552

SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT 1 FROM t1 WHERE numeropost='1');

553

ERROR 21000: Subquery returns more than 1 row

554

EXPLAIN EXTENDED SELECT MAX(numreponse) FROM t1 WHERE numeropost='1';

555

id select_type table type possible_keys key key_len ref rows filtered Extra

556

1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away

557

Warnings:

558

Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1')

559

EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');

560

id select_type table type possible_keys key key_len ref rows filtered Extra

561

1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index

562

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away

563

Warnings:

564

Note 1003 select 3 AS `numreponse` from `test`.`t1` where ((1 = '1'))

565

drop table t1;

566

CREATE TABLE t1 (a int(1));

567

INSERT INTO t1 VALUES (1);

568

SELECT 1 FROM (SELECT a FROM t1) b HAVING (SELECT b.a)=1;

569

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571

drop table t1;

572

create table t1 (a int NOT NULL, b int, primary key (a));

573

create table t2 (a int NOT NULL, b int, primary key (a));

574

insert into t1 values (0, 10),(1, 11),(2, 12);

575

insert into t2 values (1, 21),(2, 22),(3, 23);

576

select * from t1;

577

a b

578

0 10

579

1 11

580

2 12

581

update t1 set b= (select b from t1);

582

ERROR HY000: You can't specify target table 't1' for update in FROM clause

583

update t1 set b= (select b from t2);

584

ERROR 21000: Subquery returns more than 1 row

585

update t1 set b= (select b from t2 where t1.a = t2.a);

586

select * from t1;

587

a b

588

0 NULL

589

1 21

590

2 22

591

drop table t1, t2;

592

create table t1 (a int NOT NULL, b int, primary key (a));

593

create table t2 (a int NOT NULL, b int, primary key (a));

594

insert into t1 values (0, 10),(1, 11),(2, 12);

595

insert into t2 values (1, 21),(2, 12),(3, 23);

596

select * from t1;

597

a b

598

0 10

599

1 11

600

2 12

601

select * from t1 where b = (select b from t2 where t1.a = t2.a);

602

a b

603

2 12

604

delete from t1 where b in (select b from t1);

605

ERROR HY000: You can't specify target table 't1' for update in FROM clause

606

delete from t1 where b = (select b from t2);

607

ERROR 21000: Subquery returns more than 1 row

608

delete from t1 where b = (select b from t2 where t1.a = t2.a);

609

select * from t1;

610

a b

611

0 10

612

1 11

613

drop table t1, t2;

614

create table t11 (a int NOT NULL, b int, primary key (a));

615

create table t12 (a int NOT NULL, b int, primary key (a));

616

create table t2 (a int NOT NULL, b int, primary key (a));

617

insert into t11 values (0, 10),(1, 11),(2, 12);

618

insert into t12 values (33, 10),(22, 11),(2, 12);

619

insert into t2 values (1, 21),(2, 12),(3, 23);

620

select * from t11;

621

a b

622

0 10

623

1 11

624

2 12

625

select * from t12;

626

a b

627

33 10

628

22 11

629

2 12

630

delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a);

631

ERROR HY000: You can't specify target table 't12' for update in FROM clause

632

delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2);

633

ERROR 21000: Subquery returns more than 1 row

634

delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a);

635

select * from t11;

636

a b

637

0 10

638

1 11

639

select * from t12;

640

a b

641

33 10

642

22 11

643

drop table t11, t12, t2;

644

CREATE TABLE t1 (x int) ENGINE=MyISAM;

645

create table t2 (a int) ENGINE=MyISAM;

646

create table t3 (b int);

647

insert into t2 values (1);

648

insert into t3 values (1),(2);

649

INSERT INTO t1 (x) VALUES ((SELECT x FROM t1));

650

ERROR HY000: You can't specify target table 't1' for update in FROM clause

651

INSERT INTO t1 (x) VALUES ((SELECT b FROM t3));

652

ERROR 21000: Subquery returns more than 1 row

653

INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));

654

select * from t1;

655

656

657

insert into t2 values (1);

658

INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2));

659

select * from t1;

660

661

662

663

INSERT INTO t1 (x) select (SELECT SUM(a)+1 FROM t2) FROM t2;

664

select * from t1;

665

666

667

668

669

670

INSERT INTO t1 (x) select (SELECT SUM(x)+2 FROM t1) FROM t2;

671

select * from t1;

672

673

674

675

676

677

678

679

INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(x) FROM t2));

680

ERROR 42S22: Unknown column 'x' in 'field list'

681

INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2));

682

select * from t1;

683

684

685

686

687

688

689

690

691

drop table t1, t2, t3;

692

CREATE TABLE t1 (x int not null, y int, primary key (x)) ENGINE=MyISAM;

693

create table t2 (a int);

694

create table t3 (a int);

695

insert into t2 values (1);

696

insert into t3 values (1),(2);

697

select * from t1;

698

x y

699

replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2));

700

ERROR HY000: You can't specify target table 't1' for update in FROM clause

701

replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2));

702

ERROR 21000: Subquery returns more than 1 row

703

replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));

704

select * from t1;

705

x y

706

1 2

707

replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+2 FROM t2));

708

select * from t1;

709

x y

710

1 3

711

replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a FROM t2));

712

select * from t1;

713

x y

714

1 3

715

4 1

716

replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a+1 FROM t2));

717

select * from t1;

718

x y

719

1 3

720

4 2

721

replace LOW_PRIORITY into t1 (x, y) VALUES ((SELECT a+1 FROM t2), (SELECT a FROM t2));

722

select * from t1;

723

x y

724

1 3

725

4 2

726

2 1

727

drop table t1, t2, t3;

728

SELECT * FROM (SELECT 1) b WHERE 1 IN (SELECT *);

729

ERROR HY000: No tables used

730

CREATE TABLE t2 (id int(11) default NULL, KEY id (id)) ENGINE=MyISAM CHARSET=latin1;

731

INSERT INTO t2 VALUES (1),(2);

732

SELECT * FROM t2 WHERE id IN (SELECT 1);

733

734

735

EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1);

736

id select_type table type possible_keys key key_len ref rows filtered Extra

737

1 PRIMARY t2 ref id id 5 const 1 100.00 Using index

738

Warnings:

739

Note 1249 Select 2 was reduced during optimization

740

Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1)

741

SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);

742

743

744

SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));

745

746

747

EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));

748

id select_type table type possible_keys key key_len ref rows filtered Extra

749

1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index

750

Warnings:

751

Note 1249 Select 3 was reduced during optimization

752

Note 1249 Select 2 was reduced during optimization

753

Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = <cache>((1 + 1)))

754

EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);

755

id select_type table type possible_keys key key_len ref rows filtered Extra

756

1 PRIMARY t2 index NULL id 5 NULL 2 100.00 Using where; Using index

757

2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used

758

3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used

759

NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL

760

Warnings:

761

Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <expr_cache><`test`.`t2`.`id`>(<in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(1)) union select 3 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(3)))))

762

SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 3);

763

764

SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);

765

766

767

INSERT INTO t2 VALUES ((SELECT * FROM t2));

768

ERROR HY000: You can't specify target table 't2' for update in FROM clause

769

INSERT INTO t2 VALUES ((SELECT id FROM t2));

770

ERROR HY000: You can't specify target table 't2' for update in FROM clause

771

SELECT * FROM t2;

772

773

774

775

CREATE TABLE t1 (id int(11) default NULL, KEY id (id)) ENGINE=MyISAM CHARSET=latin1;

776

INSERT INTO t1 values (1),(1);

777

UPDATE t2 SET id=(SELECT * FROM t1);

778

ERROR 21000: Subquery returns more than 1 row

779

drop table t2, t1;

780

create table t1 (a int);

781

insert into t1 values (1),(2),(3);

782

select 1 IN (SELECT * from t1);

783

1 IN (SELECT * from t1)

784

785

select 10 IN (SELECT * from t1);

786

10 IN (SELECT * from t1)

787

788

select NULL IN (SELECT * from t1);

789

NULL IN (SELECT * from t1)

790

NULL

791

update t1 set a=NULL where a=2;

792

select 1 IN (SELECT * from t1);

793

1 IN (SELECT * from t1)

794

795

select 3 IN (SELECT * from t1);

796

3 IN (SELECT * from t1)

797

798

select 10 IN (SELECT * from t1);

799

10 IN (SELECT * from t1)

800

NULL

801

select 1 > ALL (SELECT * from t1);

802

1 > ALL (SELECT * from t1)

803

804

select 10 > ALL (SELECT * from t1);

805

10 > ALL (SELECT * from t1)

806

NULL

807

select 1 > ANY (SELECT * from t1);

808

1 > ANY (SELECT * from t1)

809

NULL

810

select 10 > ANY (SELECT * from t1);

811

10 > ANY (SELECT * from t1)

812

813

drop table t1;

814

create table t1 (a varchar(20));

815

insert into t1 values ('A'),('BC'),('DEF');

816

select 'A' IN (SELECT * from t1);

817

'A' IN (SELECT * from t1)

818

819

select 'XYZS' IN (SELECT * from t1);

820

'XYZS' IN (SELECT * from t1)

821

822

select NULL IN (SELECT * from t1);

823

NULL IN (SELECT * from t1)

824

NULL

825

update t1 set a=NULL where a='BC';

826

select 'A' IN (SELECT * from t1);

827

'A' IN (SELECT * from t1)

828

829

select 'DEF' IN (SELECT * from t1);

830

'DEF' IN (SELECT * from t1)

831

832

select 'XYZS' IN (SELECT * from t1);

833

'XYZS' IN (SELECT * from t1)

834

NULL

835

select 'A' > ALL (SELECT * from t1);

836

'A' > ALL (SELECT * from t1)

837

838

select 'XYZS' > ALL (SELECT * from t1);

839

'XYZS' > ALL (SELECT * from t1)

840

NULL

841

select 'A' > ANY (SELECT * from t1);

842

'A' > ANY (SELECT * from t1)

843

NULL

844

select 'XYZS' > ANY (SELECT * from t1);

845

'XYZS' > ANY (SELECT * from t1)

846

847

drop table t1;

848

create table t1 (a float);

849

insert into t1 values (1.5),(2.5),(3.5);

850

select 1.5 IN (SELECT * from t1);

851

1.5 IN (SELECT * from t1)

852

853

select 10.5 IN (SELECT * from t1);

854

10.5 IN (SELECT * from t1)

855

856

select NULL IN (SELECT * from t1);

857

NULL IN (SELECT * from t1)

858

NULL

859

update t1 set a=NULL where a=2.5;

860

select 1.5 IN (SELECT * from t1);

861

1.5 IN (SELECT * from t1)

862

863

select 3.5 IN (SELECT * from t1);

864

3.5 IN (SELECT * from t1)

865

866

select 10.5 IN (SELECT * from t1);

867

10.5 IN (SELECT * from t1)

868

NULL

869

select 1.5 > ALL (SELECT * from t1);

870

1.5 > ALL (SELECT * from t1)

871

872

select 10.5 > ALL (SELECT * from t1);

873

10.5 > ALL (SELECT * from t1)

874

NULL

875

select 1.5 > ANY (SELECT * from t1);

876

1.5 > ANY (SELECT * from t1)

877

NULL

878

select 10.5 > ANY (SELECT * from t1);

879

10.5 > ANY (SELECT * from t1)

880

881

explain extended select (select a+1) from t1;

882

id select_type table type possible_keys key key_len ref rows filtered Extra

883

1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00

884

Warnings:

885

Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1

886

Note 1249 Select 2 was reduced during optimization

887

Note 1003 select (`test`.`t1`.`a` + 1) AS `(select a+1)` from `test`.`t1`

888

select (select a+1) from t1;

889

(select a+1)

890

2.5

891

NULL

892

4.5

893

drop table t1;

894

CREATE TABLE t1 (a int(11) NOT NULL default '0', PRIMARY KEY (a));

895

CREATE TABLE t2 (a int(11) default '0', INDEX (a));

896

INSERT INTO t1 VALUES (1),(2),(3),(4);

897

INSERT INTO t2 VALUES (1),(2),(3);

898

SELECT t1.a, t1.a in (select t2.a from t2) FROM t1;

899

a t1.a in (select t2.a from t2)

900

1 1

901

2 1

902

3 1

903

4 0

904

explain extended SELECT t1.a, t1.a in (select t2.a from t2) FROM t1;

905

id select_type table type possible_keys key key_len ref rows filtered Extra

906

1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index

907

2 SUBQUERY t2 index_subquery a a 5 func 2 100.00 Using index

908

Warnings:

909

Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a checking NULL having <is_not_null_test>(`test`.`t2`.`a`))))) AS `t1.a in (select t2.a from t2)` from `test`.`t1`

910

CREATE TABLE t3 (a int(11) default '0');

911

INSERT INTO t3 VALUES (1),(2),(3);

912

SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1;

913

a t1.a in (select t2.a from t2,t3 where t3.a=t2.a)

914

1 1

915

2 1

916

3 1

917

4 0

918

explain extended SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1;

919

id select_type table type possible_keys key key_len ref rows filtered Extra

920

1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index

921

2 DEPENDENT SUBQUERY t2 ref_or_null a a 5 func 2 100.00 Using where; Using index

922

2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)

923

Warnings:

924

Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select `test`.`t2`.`a` from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`))) having <is_not_null_test>(`test`.`t2`.`a`)))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1`

925

drop table t1,t2,t3;

926

# check correct NULL Processing for normal IN/ALL/ANY

927

# and 2 ways of max/min optimization

928

create table t1 (a int);

929

insert into t1 values (1), (100), (NULL), (1000);

930

create table t2 (a int not null);

931

# subselect returns empty set (for NULL and non-NULL left part)

932

select a, a in (select * from t2) from t1;

933

a a in (select * from t2)

934

1 0

935

100 0

936

NULL 0

937

1000 0

938

select a, a > any (select * from t2) from t1;

939

a a > any (select * from t2)

940

1 0

941

100 0

942

NULL 0

943

1000 0

944

select a, a > all (select * from t2) from t1;

945

a a > all (select * from t2)

946

1 1

947

100 1

948

NULL 1

949

1000 1

950

select a from t1 where a in (select * from t2);

951

952

select a from t1 where a > any (select * from t2);

953

954

select a from t1 where a > all (select * from t2);

955

956

957

100

958

NULL

959

1000

960

select a from t1 where a in (select * from t2 group by a);

961

962

select a from t1 where a > any (select * from t2 group by a);

963

964

select a from t1 where a > all (select * from t2 group by a);

965

966

967

100

968

NULL

969

1000

970

insert into t2 values (1),(200);

971

# sebselect returns non-empty set without NULLs

972

select a, a in (select * from t2) from t1;

973

a a in (select * from t2)

974

1 1

975

100 0

976

NULL NULL

977

1000 0

978

select a, a > any (select * from t2) from t1;

979

a a > any (select * from t2)

980

1 0

981

100 1

982

NULL NULL

983

1000 1

984

select a, a > all (select * from t2) from t1;

985

a a > all (select * from t2)

986

1 0

987

100 0

988

NULL NULL

989

1000 1

990

select a from t1 where a in (select * from t2);

991

992

993

select a from t1 where a > any (select * from t2);

994

995

100

996

1000

997

select a from t1 where a > all (select * from t2);

998

999

1000

select a from t1 where a in (select * from t2 group by a);

1001

1002

1003

select a from t1 where a > any (select * from t2 group by a);

1004

1005

100

1006

1000

1007

select a from t1 where a > all (select * from t2 group by a);

1008

1009

1000

1010

drop table t2;

1011

create table t2 (a int);

1012

insert into t2 values (1),(NULL),(200);

1013

# sebselect returns non-empty set with NULLs

1014

select a, a in (select * from t2) from t1;

1015

a a in (select * from t2)

1016

1 1

1017

100 NULL

1018

NULL NULL

1019

1000 NULL

1020

select a, a > any (select * from t2) from t1;

1021

a a > any (select * from t2)

1022

1 NULL

1023

100 1

1024

NULL NULL

1025

1000 1

1026

select a, a > all (select * from t2) from t1;

1027

a a > all (select * from t2)

1028

1 0

1029

100 0

1030

NULL NULL

1031

1000 NULL

1032

select a from t1 where a in (select * from t2);

1033

1034

1035

select a from t1 where a > any (select * from t2);

1036

1037

100

1038

1000

1039

select a from t1 where a > all (select * from t2);

1040

1041

select a from t1 where a in (select * from t2 group by a);

1042

1043

1044

select a from t1 where a > any (select * from t2 group by a);

1045

1046

100

1047

1000

1048

select a from t1 where a > all (select * from t2 group by a);

1049

1050

drop table t1, t2;

1051

create table t1 (a float);

1052

select 10.5 IN (SELECT * from t1 LIMIT 1);

1053

ERROR 42000: This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'

1054

select 10.5 IN (SELECT * from t1 LIMIT 1 UNION SELECT 1.5);

1055

ERROR 42000: This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'

1056

drop table t1;

1057

create table t1 (a int, b int, c varchar(10));

1058

create table t2 (a int);

1059

insert into t1 values (1,2,'a'),(2,3,'b'),(3,4,'c');

1060

insert into t2 values (1),(2),(NULL);

1061

select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a'),(select c from t1 where a=t2.a) from t2;

1062

a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a') (select c from t1 where a=t2.a)

1063

1 1 a

1064

2 0 b

1065

NULL NULL NULL

1066

select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,3,'b'),(select c from t1 where a=t2.a) from t2;

1067

a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,3,'b') (select c from t1 where a=t2.a)

1068

1 0 a

1069

2 1 b

1070

NULL NULL NULL

1071

select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,4,'c'),(select c from t1 where a=t2.a) from t2;

1072

a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,4,'c') (select c from t1 where a=t2.a)

1073

1 0 a

1074

2 0 b

1075

NULL NULL NULL

1076

drop table t1,t2;

1077

create table t1 (a int, b real, c varchar(10));

1078

insert into t1 values (1, 1, 'a'), (2,2,'b'), (NULL, 2, 'b');

1079

select ROW(1, 1, 'a') IN (select a,b,c from t1);

1080

ROW(1, 1, 'a') IN (select a,b,c from t1)

1081

1082

select ROW(1, 2, 'a') IN (select a,b,c from t1);

1083

ROW(1, 2, 'a') IN (select a,b,c from t1)

1084

1085

select ROW(1, 1, 'a') IN (select b,a,c from t1);

1086

ROW(1, 1, 'a') IN (select b,a,c from t1)

1087

1088

select ROW(1, 1, 'a') IN (select a,b,c from t1 where a is not null);

1089

ROW(1, 1, 'a') IN (select a,b,c from t1 where a is not null)

1090

1091

select ROW(1, 2, 'a') IN (select a,b,c from t1 where a is not null);

1092

ROW(1, 2, 'a') IN (select a,b,c from t1 where a is not null)

1093

1094

select ROW(1, 1, 'a') IN (select b,a,c from t1 where a is not null);

1095

ROW(1, 1, 'a') IN (select b,a,c from t1 where a is not null)

1096

1097

select ROW(1, 1, 'a') IN (select a,b,c from t1 where c='b' or c='a');

1098

ROW(1, 1, 'a') IN (select a,b,c from t1 where c='b' or c='a')

1099

1100

select ROW(1, 2, 'a') IN (select a,b,c from t1 where c='b' or c='a');

1101

ROW(1, 2, 'a') IN (select a,b,c from t1 where c='b' or c='a')

1102

1103

select ROW(1, 1, 'a') IN (select b,a,c from t1 where c='b' or c='a');

1104

ROW(1, 1, 'a') IN (select b,a,c from t1 where c='b' or c='a')

1105

1106

select ROW(1, 1, 'a') IN (select b,a,c from t1 limit 2);

1107

ERROR 42000: This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'

1108

drop table t1;

1109

create table t1 (a int);

1110

insert into t1 values (1);

1111

do @a:=(SELECT a from t1);

1112

select @a;

1113

1114

1115

set @a:=2;

1116

set @a:=(SELECT a from t1);

1117

select @a;

1118

1119

1120

drop table t1;

1121

do (SELECT a from t1);

1122

ERROR 42S02: Table 'test.t1' doesn't exist

1123

set @a:=(SELECT a from t1);

1124

ERROR 42S02: Table 'test.t1' doesn't exist

1125

CREATE TABLE t1 (a int, KEY(a));

1126

HANDLER t1 OPEN;

1127

HANDLER t1 READ a=((SELECT 1));

1128

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SELECT 1))' at line 1

1129

HANDLER t1 CLOSE;

1130

drop table t1;

1131

create table t1 (a int);

1132

create table t2 (b int);

1133

insert into t1 values (1),(2);

1134

insert into t2 values (1);

1135

select a from t1 where a in (select a from t1 where a in (select b from t2));

1136

1137

1138

drop table t1, t2;

1139

create table t1 (a int, b int);

1140

create table t2 like t1;

1141

insert into t1 values (1,2),(1,3),(1,4),(1,5);

1142

insert into t2 values (1,2),(1,3);

1143

select * from t1 where row(a,b) in (select a,b from t2);

1144

a b

1145

1 2

1146

1 3

1147

drop table t1, t2;

1148

CREATE TABLE `t1` (`i` int(11) NOT NULL default '0',PRIMARY KEY (`i`)) ENGINE=MyISAM CHARSET=latin1;

1149

INSERT INTO t1 VALUES (1);

1150

UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i));

1151

select * from t1;

1152

1153

1154

drop table t1;

1155

CREATE TABLE t1 (a int(1));

1156

EXPLAIN EXTENDED SELECT (SELECT RAND() FROM t1) FROM t1;

1157

id select_type table type possible_keys key key_len ref rows filtered Extra

1158

1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found

1159

2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found

1160

Warnings:

1161

Note 1003 select (select rand() from `test`.`t1`) AS `(SELECT RAND() FROM t1)` from `test`.`t1`

1162

EXPLAIN EXTENDED SELECT (SELECT ENCRYPT('test') FROM t1) FROM t1;

1163

id select_type table type possible_keys key key_len ref rows filtered Extra

1164

1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found

1165

2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found

1166

Warnings:

1167

Note 1003 select (select encrypt('test') from `test`.`t1`) AS `(SELECT ENCRYPT('test') FROM t1)` from `test`.`t1`

1168

EXPLAIN EXTENDED SELECT (SELECT BENCHMARK(1,1) FROM t1) FROM t1;

1169

id select_type table type possible_keys key key_len ref rows filtered Extra

1170

1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found

1171

2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found

1172

Warnings:

1173

Note 1003 select (select benchmark(1,1) from `test`.`t1`) AS `(SELECT BENCHMARK(1,1) FROM t1)` from `test`.`t1`

1174

drop table t1;

1175

CREATE TABLE `t1` (

1176

`mot` varchar(30) character set latin1 NOT NULL default '',

1177

`topic` mediumint(8) unsigned NOT NULL default '0',

1178

`date` date NOT NULL default '0000-00-00',

1179

`pseudo` varchar(35) character set latin1 NOT NULL default '',

1180

PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`),

1181

KEY `pseudo` (`pseudo`,`date`,`topic`),

1182

KEY `topic` (`topic`)

1183

) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC;

1184

CREATE TABLE `t2` (

1185

`mot` varchar(30) character set latin1 NOT NULL default '',

1186

`topic` mediumint(8) unsigned NOT NULL default '0',

1187

`date` date NOT NULL default '0000-00-00',

1188

`pseudo` varchar(35) character set latin1 NOT NULL default '',

1189

PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`),

1190

KEY `pseudo` (`pseudo`,`date`,`topic`),

1191

KEY `topic` (`topic`)

1192

) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC;

1193

CREATE TABLE `t3` (

1194

`numeropost` mediumint(8) unsigned NOT NULL auto_increment,

1195

`maxnumrep` int(10) unsigned NOT NULL default '0',

1196

PRIMARY KEY (`numeropost`),

1197

UNIQUE KEY `maxnumrep` (`maxnumrep`)

1198

) ENGINE=MyISAM CHARSET=latin1;

1199

INSERT INTO t1 VALUES ('joce','1','','joce'),('test','2','','test');

1200

Warnings:

1201

Warning 1265 Data truncated for column 'date' at row 1

1202

Warning 1265 Data truncated for column 'date' at row 2

1203

INSERT INTO t2 VALUES ('joce','1','','joce'),('test','2','','test');

1204

Warnings:

1205

Warning 1265 Data truncated for column 'date' at row 1

1206

Warning 1265 Data truncated for column 'date' at row 2

1207

INSERT INTO t3 VALUES (1,1);

1208

SELECT DISTINCT topic FROM t2 WHERE NOT EXISTS(SELECT * FROM t3 WHERE

1209

numeropost=topic);

1210

topic

1211

1212

select * from t1;

1213

mot topic date pseudo

1214

joce 1 0000-00-00 joce

1215

test 2 0000-00-00 test

1216

DELETE FROM t1 WHERE topic IN (SELECT DISTINCT topic FROM t2 WHERE NOT

1217

EXISTS(SELECT * FROM t3 WHERE numeropost=topic));

1218

select * from t1;

1219

mot topic date pseudo

1220

joce 1 0000-00-00 joce

1221

drop table t1, t2, t3;

1222

SELECT * FROM (SELECT 1 as a,(SELECT a)) a;

1223

a (SELECT a)

1224

1 1

1225

CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT 1)) a;

1226

SHOW CREATE TABLE t1;

1227

Table Create Table

1228

t1 CREATE TABLE `t1` (

1229

`a` int(1) NOT NULL DEFAULT '0',

1230

`(SELECT 1)` int(1) NOT NULL DEFAULT '0'

1231

) ENGINE=MyISAM DEFAULT CHARSET=latin1

1232

drop table t1;

1233

CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT a)) a;

1234

SHOW CREATE TABLE t1;

1235

Table Create Table

1236

t1 CREATE TABLE `t1` (

1237

`a` int(1) NOT NULL DEFAULT '0',

1238

`(SELECT a)` int(1) NOT NULL DEFAULT '0'

1239

) ENGINE=MyISAM DEFAULT CHARSET=latin1

1240

drop table t1;

1241

CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT a+0)) a;

1242

SHOW CREATE TABLE t1;

1243

Table Create Table

1244

t1 CREATE TABLE `t1` (

1245

`a` int(1) NOT NULL DEFAULT '0',

1246

`(SELECT a+0)` int(3) NOT NULL DEFAULT '0'

1247

) ENGINE=MyISAM DEFAULT CHARSET=latin1

1248

drop table t1;

1249

CREATE TABLE t1 SELECT (SELECT 1 as a UNION SELECT 1+1 limit 1,1) as a;

1250

select * from t1;

1251

1252

1253

SHOW CREATE TABLE t1;

1254

Table Create Table

1255

t1 CREATE TABLE `t1` (

1256

`a` bigint(20) NOT NULL DEFAULT '0'

1257

) ENGINE=MyISAM DEFAULT CHARSET=latin1

1258

drop table t1;

1259

create table t1 (a int);

1260

insert into t1 values (1), (2), (3);

1261

explain extended select a,(select (select rand() from t1 limit 1) from t1 limit 1)

1262

from t1;

1263

id select_type table type possible_keys key key_len ref rows filtered Extra

1264

1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00

1265

2 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00

1266

3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00

1267

Warnings:

1268

Note 1003 select `test`.`t1`.`a` AS `a`,(select (select rand() from `test`.`t1` limit 1) from `test`.`t1` limit 1) AS `(select (select rand() from t1 limit 1) from t1 limit 1)` from `test`.`t1`

1269

drop table t1;

1270

select t1.Continent, t2.Name, t2.Population from t1 LEFT JOIN t2 ON t1.Code = t2.Country where t2.Population IN (select max(t2.Population) AS Population from t2, t1 where t2.Country = t1.Code group by Continent);

1271

ERROR 42S02: Table 'test.t1' doesn't exist

1272

CREATE TABLE t1 (

1273

ID int(11) NOT NULL auto_increment,

1274

name char(35) NOT NULL default '',

1275

t2 char(3) NOT NULL default '',

1276

District char(20) NOT NULL default '',

1277

Population int(11) NOT NULL default '0',

1278

PRIMARY KEY (ID)

1279

) ENGINE=MyISAM;

1280

INSERT INTO t1 VALUES (130,'Sydney','AUS','New South Wales',3276207);

1281

INSERT INTO t1 VALUES (131,'Melbourne','AUS','Victoria',2865329);

1282

INSERT INTO t1 VALUES (132,'Brisbane','AUS','Queensland',1291117);

1283

CREATE TABLE t2 (

1284

Code char(3) NOT NULL default '',

1285

Name char(52) NOT NULL default '',

1286

Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL default 'Asia',

1287

Region char(26) NOT NULL default '',

1288

SurfaceArea float(10,2) NOT NULL default '0.00',

1289

IndepYear smallint(6) default NULL,

1290

Population int(11) NOT NULL default '0',

1291

LifeExpectancy float(3,1) default NULL,

1292

GNP float(10,2) default NULL,

1293

GNPOld float(10,2) default NULL,

1294

LocalName char(45) NOT NULL default '',

1295

GovernmentForm char(45) NOT NULL default '',

1296

HeadOfState char(60) default NULL,

1297

Capital int(11) default NULL,

1298

Code2 char(2) NOT NULL default '',

1299

PRIMARY KEY (Code)

1300

) ENGINE=MyISAM;

1301

INSERT INTO t2 VALUES ('AUS','Australia','Oceania','Australia and New Zealand',7741220.00,1901,18886000,79.8,351182.00,392911.00,'Australia','Constitutional Monarchy, Federation','Elisabeth II',135,'AU');

1302

INSERT INTO t2 VALUES ('AZE','Azerbaijan','Asia','Middle East',86600.00,1991,7734000,62.9,4127.00,4100.00,'Azärbaycan','Federal Republic','Heydär Äliyev',144,'AZ');

1303

select t2.Continent, t1.Name, t1.Population from t2 LEFT JOIN t1 ON t2.Code = t1.t2 where t1.Population IN (select max(t1.Population) AS Population from t1, t2 where t1.t2 = t2.Code group by Continent);

1304

Continent Name Population

1305

Oceania Sydney 3276207

1306

drop table t1, t2;

1307

CREATE TABLE `t1` (

1308

`id` mediumint(8) unsigned NOT NULL auto_increment,

1309

`pseudo` varchar(35) character set latin1 NOT NULL default '',

1310

PRIMARY KEY (`id`),

1311

UNIQUE KEY `pseudo` (`pseudo`)

1312

) ENGINE=MyISAM PACK_KEYS=1 ROW_FORMAT=DYNAMIC;

1313

INSERT INTO t1 (pseudo) VALUES ('test');

1314

SELECT 0 IN (SELECT 1 FROM t1 a);

1315

0 IN (SELECT 1 FROM t1 a)

1316

1317

EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a);

1318

id select_type table type possible_keys key key_len ref rows filtered Extra

1319

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used

1320

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

1321

Warnings:

1322

Note 1003 select <in_optimizer>(0,<exists>(select 1 from dual where (0 = 1))) AS `0 IN (SELECT 1 FROM t1 a)`

1323

INSERT INTO t1 (pseudo) VALUES ('test1');

1324

SELECT 0 IN (SELECT 1 FROM t1 a);

1325

0 IN (SELECT 1 FROM t1 a)

1326

1327

EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a);

1328

id select_type table type possible_keys key key_len ref rows filtered Extra

1329

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used

1330

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

1331

Warnings:

1332

Note 1003 select <in_optimizer>(0,<exists>(select 1 from `test`.`t1` `a` where (0 = 1))) AS `0 IN (SELECT 1 FROM t1 a)`

1333

drop table t1;

1334

CREATE TABLE `t1` (

1335

`i` int(11) NOT NULL default '0',

1336

PRIMARY KEY (`i`)

1337

) ENGINE=MyISAM CHARSET=latin1;

1338

INSERT INTO t1 VALUES (1);

1339

UPDATE t1 SET i=i+(SELECT MAX(i) FROM (SELECT 1) t) WHERE i=(SELECT MAX(i));

1340

UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i));

1341

UPDATE t1 SET t.i=i+(SELECT MAX(i) FROM (SELECT 1) t);

1342

ERROR 42S22: Unknown column 't.i' in 'field list'

1343

select * from t1;

1344

1345

1346

drop table t1;

1347

CREATE TABLE t1 (

1348

id int(11) default NULL

1349

) ENGINE=MyISAM CHARSET=latin1;

1350

INSERT INTO t1 VALUES (1),(1),(2),(2),(1),(3);

1351

CREATE TABLE t2 (

1352

id int(11) default NULL,

1353

name varchar(15) default NULL

1354

) ENGINE=MyISAM CHARSET=latin1;

1355

INSERT INTO t2 VALUES (4,'vita'), (1,'vita'), (2,'vita'), (1,'vita');

1356

update t1, t2 set t2.name='lenka' where t2.id in (select id from t1);

1357

select * from t2;

1358

id name

1359

4 vita

1360

1 lenka

1361

2 lenka

1362

1 lenka

1363

drop table t1,t2;

1364

create table t1 (a int, unique index indexa (a));

1365

insert into t1 values (-1), (-4), (-2), (NULL);

1366

select -10 IN (select a from t1 FORCE INDEX (indexa));

1367

-10 IN (select a from t1 FORCE INDEX (indexa))

1368

NULL

1369

drop table t1;

1370

create table t1 (id int not null auto_increment primary key, salary int, key(salary));

1371

insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000);

1372

explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1);

1373

id select_type table type possible_keys key key_len ref rows filtered Extra

1374

1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using where

1375

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away

1376

Warnings:

1377

Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`))

1378

drop table t1;

1379

CREATE TABLE t1 (

1380

ID int(10) unsigned NOT NULL auto_increment,

1381

SUB_ID int(3) unsigned NOT NULL default '0',

1382

REF_ID int(10) unsigned default NULL,

1383

REF_SUB int(3) unsigned default '0',

1384

PRIMARY KEY (ID,SUB_ID),

1385

UNIQUE KEY t1_PK (ID,SUB_ID),

1386

KEY t1_FK (REF_ID,REF_SUB),

1387

KEY t1_REFID (REF_ID)

1388

) ENGINE=MyISAM CHARSET=cp1251;

1389

INSERT INTO t1 VALUES (1,0,NULL,NULL),(2,0,NULL,NULL);

1390

SELECT DISTINCT REF_ID FROM t1 WHERE ID= (SELECT DISTINCT REF_ID FROM t1 WHERE ID=2);

1391

REF_ID

1392

DROP TABLE t1;

1393

create table t1 (a int, b int);

1394

create table t2 (a int, b int);

1395

insert into t1 values (1,0), (2,0), (3,0);

1396

insert into t2 values (1,1), (2,1), (3,1), (2,2);

1397

update ignore t1 set b=(select b from t2 where t1.a=t2.a);

1398

Warnings:

1399

Warning 1242 Subquery returns more than 1 row

1400

select * from t1;

1401

a b

1402

1 1

1403

2 NULL

1404

3 1

1405

drop table t1, t2;

1406

CREATE TABLE `t1` (

1407

`id` mediumint(8) unsigned NOT NULL auto_increment,

1408

`pseudo` varchar(35) NOT NULL default '',

1409

`email` varchar(60) NOT NULL default '',

1410

PRIMARY KEY (`id`),

1411

UNIQUE KEY `email` (`email`),

1412

UNIQUE KEY `pseudo` (`pseudo`)

1413

) ENGINE=MyISAM CHARSET=latin1 PACK_KEYS=1 ROW_FORMAT=DYNAMIC;

1414

INSERT INTO t1 (id,pseudo,email) VALUES (1,'test','test'),(2,'test1','test1');

1415

SELECT pseudo as a, pseudo as b FROM t1 GROUP BY (SELECT a) ORDER BY (SELECT id*1);

1416

a b

1417

test test

1418

test1 test1

1419

drop table if exists t1;

1420

(SELECT 1 as a) UNION (SELECT 1) ORDER BY (SELECT a+0);

1421

1422

1423

create table t1 (a int not null, b int, primary key (a));

1424

create table t2 (a int not null, primary key (a));

1425

create table t3 (a int not null, b int, primary key (a));

1426

insert into t1 values (1,10), (2,20), (3,30), (4,40);

1427

insert into t2 values (2), (3), (4), (5);

1428

insert into t3 values (10,3), (20,4), (30,5);

1429

select * from t2 where t2.a in (select a from t1);

1430

1431

1432

1433

1434

explain extended select * from t2 where t2.a in (select a from t1);

1435

id select_type table type possible_keys key key_len ref rows filtered Extra

1436

1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index

1437

1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 4 75.00 Using where; Using index; Using join buffer (flat, BNL join)

1438

Warnings:

1439

Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where (`test`.`t1`.`a` = `test`.`t2`.`a`)

1440

select * from t2 where t2.a in (select a from t1 where t1.b <> 30);

1441

1442

1443

1444

explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30);

1445

id select_type table type possible_keys key key_len ref rows filtered Extra

1446

1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index

1447

1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 4 75.00 Using where; Using join buffer (flat, BNL join)

1448

Warnings:

1449

Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30))

1450

select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);

1451

1452

1453

1454

explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);

1455

id select_type table type possible_keys key key_len ref rows filtered Extra

1456

1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index

1457

1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 4 75.00 Using where; Using join buffer (flat, BNL join)

1458

1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 100.00 Using index

1459

Warnings:

1460

Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t3` join `test`.`t2` where ((`test`.`t3`.`a` = `test`.`t1`.`b`) and (`test`.`t1`.`a` = `test`.`t2`.`a`))

1461

drop table t1, t2, t3;

1462

create table t1 (a int, b int, index a (a,b));

1463

create table t2 (a int, index a (a));

1464

create table t3 (a int, b int, index a (a));

1465

insert into t1 values (1,10), (2,20), (3,30), (4,40);

1466

create table t0(a int);

1467

insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

1468

insert into t1

1469

select rand()*100000+200,rand()*100000 from t0 A, t0 B, t0 C, t0 D;

1470

insert into t2 values (2), (3), (4), (5);

1471

insert into t3 values (10,3), (20,4), (30,5);

1472

select * from t2 where t2.a in (select a from t1);

1473

1474

1475

1476

1477

explain extended select * from t2 where t2.a in (select a from t1);

1478

id select_type table type possible_keys key key_len ref rows filtered Extra

1479

1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index

1480

1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using index; FirstMatch(t2)

1481

Warnings:

1482

Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where (`test`.`t1`.`a` = `test`.`t2`.`a`)

1483

select * from t2 where t2.a in (select a from t1 where t1.b <> 30);

1484

1485

1486

1487

explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30);

1488

id select_type table type possible_keys key key_len ref rows filtered Extra

1489

1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index

1490

1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using where; Using index; FirstMatch(t2)

1491

Warnings:

1492

Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30))

1493

select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);

1494

1495

1496

1497

explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);

1498

id select_type table type possible_keys key key_len ref rows filtered Extra

1499

1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index

1500

1 PRIMARY t3 index a a 5 NULL 3 100.00 Using where; Using index

1501

1 PRIMARY t1 ref a a 10 test.t2.a,test.t3.a 116 100.00 Using index; FirstMatch(t2)

1502

Warnings:

1503

Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1` join `test`.`t3`) where ((`test`.`t1`.`b` = `test`.`t3`.`a`) and (`test`.`t1`.`a` = `test`.`t2`.`a`))

1504

insert into t1 values (3,31);

1505

select * from t2 where t2.a in (select a from t1 where t1.b <> 30);

1506

1507

1508

1509

1510

select * from t2 where t2.a in (select a from t1 where t1.b <> 30 and t1.b <> 31);

1511

1512

1513

1514

explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30);

1515

id select_type table type possible_keys key key_len ref rows filtered Extra

1516

1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index

1517

1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using where; Using index; FirstMatch(t2)

1518

Warnings:

1519

Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30))

1520

drop table t0, t1, t2, t3;

1521

create table t1 (a int, b int);

1522

create table t2 (a int, b int);

1523

create table t3 (a int, b int);

1524

insert into t1 values (0,100),(1,2), (1,3), (2,2), (2,7), (2,-1), (3,10);

1525

insert into t2 values (0,0), (1,1), (2,1), (3,1), (4,1);

1526

insert into t3 values (3,3), (2,2), (1,1);

1527

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;

1528

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)

1529

3 1

1530

2 2

1531

1 2

1532

drop table t1,t2,t3;

1533

create table t1 (s1 int);

1534

create table t2 (s1 int);

1535

insert into t1 values (1);

1536

insert into t2 values (1);

1537

select * from t1 where exists (select s1 from t2 having max(t2.s1)=t1.s1);

1538

1539

1540

drop table t1,t2;

1541

create table t1 (s1 int);

1542

create table t2 (s1 int);

1543

insert into t1 values (1);

1544

insert into t2 values (1);

1545

update t1 set s1 = s1 + 1 where 1 = (select x.s1 as A from t2 WHERE t2.s1 > t1.s1 order by A);

1546

ERROR 42S22: Unknown column 'x.s1' in 'field list'

1547

DROP TABLE t1, t2;

1548

CREATE TABLE t1 (s1 CHAR(5) COLLATE latin1_german1_ci,

1549

s2 CHAR(5) COLLATE latin1_swedish_ci);

1550

INSERT INTO t1 VALUES ('z','?');

1551

select * from t1 where s1 > (select max(s2) from t1);

1552

ERROR HY000: Illegal mix of collations (latin1_german1_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '>'

1553

select * from t1 where s1 > any (select max(s2) from t1);

1554

ERROR HY000: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (latin1_german1_ci,IMPLICIT) for operation '<'

1555

drop table t1;

1556

create table t1(toid int,rd int);

1557

create table t2(userid int,pmnew int,pmtotal int);

1558

insert into t2 values(1,0,0),(2,0,0);

1559

insert into t1 values(1,0),(1,0),(1,0),(1,12),(1,15),(1,123),(1,12312),(1,12312),(1,123),(2,0),(2,0),(2,1),(2,2);

1560

select userid,pmtotal,pmnew, (select count(rd) from t1 where toid=t2.userid) calc_total, (select count(rd) from t1 where rd=0 and toid=t2.userid) calc_new from t2 where userid in (select distinct toid from t1);

1561

userid pmtotal pmnew calc_total calc_new

1562

1 0 0 9 3

1563

2 0 0 4 2

1564

drop table t1, t2;

1565

create table t1 (s1 char(5));

1566

select (select 'a','b' from t1 union select 'a','b' from t1) from t1;

1567

ERROR 21000: Operand should contain 1 column(s)

1568

insert into t1 values ('tttt');

1569

select * from t1 where ('a','b')=(select 'a','b' from t1 union select 'a','b' from t1);

1570

1571

tttt

1572

explain extended (select * from t1);

1573

id select_type table type possible_keys key key_len ref rows filtered Extra

1574

1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00

1575

Warnings:

1576

Note 1003 (select 'tttt' AS `s1` from dual)

1577

(select * from t1);

1578

1579

tttt

1580

drop table t1;

1581

create table t1 (s1 char(5), index s1(s1));

1582

create table t2 (s1 char(5), index s1(s1));

1583

insert into t1 values ('a1'),('a2'),('a3');

1584

insert into t2 values ('a1'),('a2');

1585

select s1, s1 NOT IN (SELECT s1 FROM t2) from t1;

1586

s1 s1 NOT IN (SELECT s1 FROM t2)

1587

a1 0

1588

a2 0

1589

a3 1

1590

select s1, s1 = ANY (SELECT s1 FROM t2) from t1;

1591

s1 s1 = ANY (SELECT s1 FROM t2)

1592

a1 1

1593

a2 1

1594

a3 0

1595

select s1, s1 <> ALL (SELECT s1 FROM t2) from t1;

1596

s1 s1 <> ALL (SELECT s1 FROM t2)

1597

a1 0

1598

a2 0

1599

a3 1

1600

select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1;

1601

s1 s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')

1602

a1 0

1603

a2 1

1604

a3 1

1605

explain extended select s1, s1 NOT IN (SELECT s1 FROM t2) from t1;

1606

id select_type table type possible_keys key key_len ref rows filtered Extra

1607

1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index

1608

2 SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key

1609

Warnings:

1610

Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1`

1611

explain extended select s1, s1 = ANY (SELECT s1 FROM t2) from t1;

1612

id select_type table type possible_keys key key_len ref rows filtered Extra

1613

1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index

1614

2 SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key

1615

Warnings:

1616

Note 1003 select `test`.`t1`.`s1` AS `s1`,<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1`

1617

explain extended select s1, s1 <> ALL (SELECT s1 FROM t2) from t1;

1618

id select_type table type possible_keys key key_len ref rows filtered Extra

1619

1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index

1620

2 SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key

1621

Warnings:

1622

1623

explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1;

1624

id select_type table type possible_keys key key_len ref rows filtered Extra

1625

1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index

1626

2 SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Using where; Full scan on NULL key

1627

Warnings:

1628

Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < 'a2') having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1`

1629

drop table t1,t2;

1630

create table t2 (a int, b int not null);

1631

create table t3 (a int);

1632

insert into t3 values (6),(7),(3);

1633

select * from t3 where a >= all (select b from t2);

1634

1635

1636

1637

1638

explain extended select * from t3 where a >= all (select b from t2);

1639

id select_type table type possible_keys key key_len ref rows filtered Extra

1640

1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where

1641

2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found

1642

Warnings:

1643

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,((select max(NULL) from `test`.`t2`) > <cache>(`test`.`t3`.`a`))))

1644

select * from t3 where a >= some (select b from t2);

1645

1646

explain extended select * from t3 where a >= some (select b from t2);

1647

id select_type table type possible_keys key key_len ref rows filtered Extra

1648

1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where

1649

2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found

1650

Warnings:

1651

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,((select min(NULL) from `test`.`t2`) <= <cache>(`test`.`t3`.`a`))))

1652

select * from t3 where a >= all (select b from t2 group by 1);

1653

1654

1655

1656

1657

explain extended select * from t3 where a >= all (select b from t2 group by 1);

1658

id select_type table type possible_keys key key_len ref rows filtered Extra

1659

1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where

1660

2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found

1661

Warnings:

1662

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,((select max(NULL) from `test`.`t2`) > <cache>(`test`.`t3`.`a`))))

1663

select * from t3 where a >= some (select b from t2 group by 1);

1664

1665

explain extended select * from t3 where a >= some (select b from t2 group by 1);

1666

id select_type table type possible_keys key key_len ref rows filtered Extra

1667

1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where

1668

2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found

1669

Warnings:

1670

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,((select min(NULL) from `test`.`t2`) <= <cache>(`test`.`t3`.`a`))))

1671

select * from t3 where NULL >= any (select b from t2);

1672

1673

explain extended select * from t3 where NULL >= any (select b from t2);

1674

id select_type table type possible_keys key key_len ref rows filtered Extra

1675

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

1676

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table

1677

Warnings:

1678

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0

1679

select * from t3 where NULL >= any (select b from t2 group by 1);

1680

1681

explain extended select * from t3 where NULL >= any (select b from t2 group by 1);

1682

id select_type table type possible_keys key key_len ref rows filtered Extra

1683

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

1684

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table

1685

Warnings:

1686

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0

1687

select * from t3 where NULL >= some (select b from t2);

1688

1689

explain extended select * from t3 where NULL >= some (select b from t2);

1690

id select_type table type possible_keys key key_len ref rows filtered Extra

1691

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

1692

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table

1693

Warnings:

1694

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0

1695

select * from t3 where NULL >= some (select b from t2 group by 1);

1696

1697

explain extended select * from t3 where NULL >= some (select b from t2 group by 1);

1698

id select_type table type possible_keys key key_len ref rows filtered Extra

1699

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

1700

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table

1701

Warnings:

1702

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0

1703

insert into t2 values (2,2), (2,1), (3,3), (3,1);

1704

select * from t3 where a > all (select max(b) from t2 group by a);

1705

1706

1707

1708

explain extended select * from t3 where a > all (select max(b) from t2 group by a);

1709

id select_type table type possible_keys key key_len ref rows filtered Extra

1710

1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where

1711

2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary

1712

Warnings:

1713

Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(<max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`) >= <cache>(`test`.`t3`.`a`))))

1714

drop table t2, t3;

1715

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 ;

1716

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());

1717

CREATE TABLE `t2` (`db_id` int(11) NOT NULL auto_increment,`name` varchar(200) NOT NULL default '',`primary_uid` smallint(6) NOT NULL default '0',`secondary_uid` smallint(6) NOT NULL default '0',PRIMARY KEY (`db_id`),UNIQUE KEY `name_2` (`name`),FULLTEXT KEY `name` (`name`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2147483647;

1718

INSERT INTO `t2` (`db_id`, `name`, `primary_uid`, `secondary_uid`) VALUES (18, 'Not Set 1', 0, 0),(19, 'Valid', 1, 2),(20, 'Valid 2', 1, 2),(21, 'Should Not Return', 1, 2),(26, 'Not Set 2', 0, 0),(-1, 'ALL DB\'S', 0, 0);

1719

CREATE TABLE `t3` (`taskgenid` mediumint(9) NOT NULL auto_increment,`dbid` int(11) NOT NULL default '0',`taskid` int(11) NOT NULL default '0',`mon` tinyint(4) NOT NULL default '1',`tues` tinyint(4) NOT NULL default '1',`wed` tinyint(4) NOT NULL default '1',`thur` tinyint(4) NOT NULL default '1',`fri` tinyint(4) NOT NULL default '1',`sat` tinyint(4) NOT NULL default '0',`sun` tinyint(4) NOT NULL default '0',`how_often` smallint(6) NOT NULL default '1',`userid` smallint(6) NOT NULL default '0',`active` tinyint(4) NOT NULL default '1',PRIMARY KEY (`taskgenid`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2 ;

1720

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);

1721

CREATE TABLE `t4` (`task_id` smallint(6) NOT NULL default '0',`description` varchar(200) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1;

1722

INSERT INTO `t4` (`task_id`, `description`) VALUES (1, 'Daily Check List'),(2, 'Weekly Status');

1723

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;

1724

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')

1725

-1 Valid 1

1726

-1 Valid 2 1

1727

-1 Should Not Return 0

1728

SELECT dbid, name FROM t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND ((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')) AND t4.task_id = taskid;

1729

dbid name

1730

-1 Valid

1731

-1 Valid 2

1732

drop table t1,t2,t3,t4;

1733

CREATE TABLE t1 (id int(11) default NULL) ENGINE=MyISAM CHARSET=latin1;

1734

INSERT INTO t1 VALUES (1),(5);

1735

CREATE TABLE t2 (id int(11) default NULL) ENGINE=MyISAM CHARSET=latin1;

1736

INSERT INTO t2 VALUES (2),(6);

1737

select * from t1 where (1,2,6) in (select * from t2);

1738

ERROR 21000: Operand should contain 3 column(s)

1739

DROP TABLE t1,t2;

1740

create table t1 (s1 int);

1741

insert into t1 values (1);

1742

insert into t1 values (2);

1743

set sort_buffer_size = (select s1 from t1);

1744

ERROR 21000: Subquery returns more than 1 row

1745

do (select * from t1);

1746

Warnings:

1747

Error 1242 Subquery returns more than 1 row

1748

drop table t1;

1749

create table t1 (s1 char);

1750

insert into t1 values ('e');

1751

select * from t1 where 'f' > any (select s1 from t1);

1752

1753

1754

select * from t1 where 'f' > any (select s1 from t1 union select s1 from t1);

1755

1756

1757

explain extended select * from t1 where 'f' > any (select s1 from t1 union select s1 from t1);

1758

id select_type table type possible_keys key key_len ref rows filtered Extra

1759

1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00

1760

2 SUBQUERY t1 system NULL NULL NULL NULL 1 100.00

1761

3 UNION t1 system NULL NULL NULL NULL 1 100.00

1762

NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL

1763

Warnings:

1764

Note 1003 select 'e' AS `s1` from dual where 1

1765

drop table t1;

1766

CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1;

1767

INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874');

1768

CREATE TABLE t2 (code char(5) NOT NULL default '',UNIQUE KEY code (code)) ENGINE=MyISAM CHARSET=latin1;

1769

INSERT INTO t2 VALUES ('1'),('1226'),('1245'),('1862'),('18623'),('1874'),('1967'),('6');

1770

select c.number as phone,(select p.code from t2 p where c.number like concat(p.code, '%') order by length(p.code) desc limit 1) as code from t1 c;

1771

phone code

1772

69294728265 6

1773

18621828126 1862

1774

89356874041 NULL

1775

95895001874 NULL

1776

drop table t1, t2;

1777

create table t1 (s1 int);

1778

create table t2 (s1 int);

1779

select * from t1 where (select count(*) from t2 where t1.s2) = 1;

1780

ERROR 42S22: Unknown column 't1.s2' in 'where clause'

1781

select * from t1 where (select count(*) from t2 group by t1.s2) = 1;

1782

ERROR 42S22: Unknown column 't1.s2' in 'group statement'

1783

select count(*) from t2 group by t1.s2;

1784

ERROR 42S22: Unknown column 't1.s2' in 'group statement'

1785

drop table t1, t2;

1786

CREATE TABLE t1(COLA FLOAT NOT NULL,COLB FLOAT NOT NULL,COLC VARCHAR(20) DEFAULT NULL,PRIMARY KEY (COLA, COLB));

1787

CREATE TABLE t2(COLA FLOAT NOT NULL,COLB FLOAT NOT NULL,COLC CHAR(1) NOT NULL,PRIMARY KEY (COLA));

1788

INSERT INTO t1 VALUES (1,1,'1A3240'), (1,2,'4W2365');

1789

INSERT INTO t2 VALUES (100, 200, 'C');

1790

SELECT DISTINCT COLC FROM t1 WHERE COLA = (SELECT COLA FROM t2 WHERE COLB = 200 AND COLC ='C' LIMIT 1);

1791

COLC

1792

DROP TABLE t1, t2;

1793

CREATE TABLE t1 (a int(1));

1794

INSERT INTO t1 VALUES (1),(1),(1),(1),(1),(2),(3),(4),(5);

1795

SELECT DISTINCT (SELECT a) FROM t1 LIMIT 100;

1796

(SELECT a)

1797

1798

1799

1800

1801

1802

DROP TABLE t1;

1803

create table t1 (a int, b decimal(13, 3));

1804

insert into t1 values (1, 0.123);

1805

select a, (select max(b) from t1) into outfile "../../tmp/subselect.out.file.1" from t1;

1806

delete from t1;

1807

load data infile "../../tmp/subselect.out.file.1" into table t1;

1808

select * from t1;

1809

a b

1810

1 0.123

1811

drop table t1;

1812

CREATE TABLE `t1` (

1813

`id` int(11) NOT NULL auto_increment,

1814

`id_cns` tinyint(3) unsigned NOT NULL default '0',

1815

`tipo` enum('','UNO','DUE') NOT NULL default '',

1816

`anno_dep` smallint(4) unsigned zerofill NOT NULL default '0000',

1817

`particolare` mediumint(8) unsigned NOT NULL default '0',

1818

`generale` mediumint(8) unsigned NOT NULL default '0',

1819

`bis` tinyint(3) unsigned NOT NULL default '0',

1820

PRIMARY KEY (`id`),

1821

UNIQUE KEY `idx_cns_gen_anno` (`anno_dep`,`id_cns`,`generale`,`particolare`),

1822

UNIQUE KEY `idx_cns_par_anno` (`id_cns`,`anno_dep`,`tipo`,`particolare`,`bis`)

1823

);

1824

INSERT INTO `t1` VALUES (1,16,'UNO',1987,2048,9681,0),(2,50,'UNO',1987,1536,13987,0),(3,16,'UNO',1987,2432,14594,0),(4,16,'UNO',1987,1792,13422,0),(5,16,'UNO',1987,1025,10240,0),(6,16,'UNO',1987,1026,7089,0);

1825

CREATE TABLE `t2` (

1826

`id` tinyint(3) unsigned NOT NULL auto_increment,

1827

`max_anno_dep` smallint(6) unsigned NOT NULL default '0',

1828

PRIMARY KEY (`id`)

1829

);

1830

INSERT INTO `t2` VALUES (16,1987),(50,1990),(51,1990);

1831

SELECT cns.id, cns.max_anno_dep, cns.max_anno_dep = (SELECT s.anno_dep FROM t1 AS s WHERE s.id_cns = cns.id ORDER BY s.anno_dep DESC LIMIT 1) AS PIPPO FROM t2 AS cns;

1832

id max_anno_dep PIPPO

1833

16 1987 1

1834

50 1990 0

1835

51 1990 NULL

1836

DROP TABLE t1, t2;

1837

create table t1 (a int);

1838

insert into t1 values (1), (2), (3);

1839

SET SQL_SELECT_LIMIT=1;

1840

select sum(a) from (select * from t1) as a;

1841

sum(a)

1842

1843

select 2 in (select * from t1);

1844

2 in (select * from t1)

1845

1846

SET SQL_SELECT_LIMIT=default;

1847

drop table t1;

1848

CREATE TABLE t1 (a int, b int, INDEX (a));

1849

INSERT INTO t1 VALUES (1, 1), (1, 2), (1, 3);

1850

SELECT * FROM t1 WHERE a = (SELECT MAX(a) FROM t1 WHERE a = 1) ORDER BY b;

1851

a b

1852

1 1

1853

1 2

1854

1 3

1855

DROP TABLE t1;

1856

create table t1(val varchar(10));

1857

insert into t1 values ('aaa'), ('bbb'),('eee'),('mmm'),('ppp');

1858

select count(*) from t1 as w1 where w1.val in (select w2.val from t1 as w2 where w2.val like 'm%') and w1.val in (select w3.val from t1 as w3 where w3.val like 'e%');

1859

count(*)

1860

1861

drop table t1;

1862

create table t1 (id int not null, text varchar(20) not null default '', primary key (id));

1863

insert into t1 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text11'), (12, 'text12');

1864

select * from t1 where id not in (select id from t1 where id < 8);

1865

id text

1866

8 text8

1867

9 text9

1868

10 text10

1869

11 text11

1870

12 text12

1871

select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null);

1872

id text

1873

8 text8

1874

9 text9

1875

10 text10

1876

11 text11

1877

12 text12

1878

explain extended select * from t1 where id not in (select id from t1 where id < 8);

1879

id select_type table type possible_keys key key_len ref rows filtered Extra

1880

1 PRIMARY t1 ALL NULL NULL NULL NULL 12 100.00 Using where

1881

2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index; Using where

1882

Warnings:

1883

Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (not(<expr_cache><`test`.`t1`.`id`>(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where ((`test`.`t1`.`id` < 8) and (<cache>(`test`.`t1`.`id`) = `test`.`t1`.`id`))))))))

1884

explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null);

1885

id select_type table type possible_keys key key_len ref rows filtered Extra

1886

1 PRIMARY tt ALL NULL NULL NULL NULL 12 100.00 Using where

1887

2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 test.tt.id 1 100.00 Using where; Using index

1888

Warnings:

1889

Note 1276 Field or reference 'test.tt.id' of SELECT #2 was resolved in SELECT #1

1890

Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where (not(<expr_cache><`test`.`tt`.`id`>(exists(select `test`.`t1`.`id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and (`test`.`t1`.`id` = `test`.`tt`.`id`)) having (`test`.`t1`.`id` is not null)))))

1891

insert into t1 (id, text) values (1000, 'text1000'), (1001, 'text1001');

1892

create table t2 (id int not null, text varchar(20) not null default '', primary key (id));

1893

insert into t2 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text1'), (12, 'text2'), (13, 'text3'), (14, 'text4'), (15, 'text5'), (16, 'text6'), (17, 'text7'), (18, 'text8'), (19, 'text9'), (20, 'text10'),(21, 'text1'), (22, 'text2'), (23, 'text3'), (24, 'text4'), (25, 'text5'), (26, 'text6'), (27, 'text7'), (28, 'text8'), (29, 'text9'), (30, 'text10'), (31, 'text1'), (32, 'text2'), (33, 'text3'), (34, 'text4'), (35, 'text5'), (36, 'text6'), (37, 'text7'), (38, 'text8'), (39, 'text9'), (40, 'text10'), (41, 'text1'), (42, 'text2'), (43, 'text3'), (44, 'text4'), (45, 'text5'), (46, 'text6'), (47, 'text7'), (48, 'text8'), (49, 'text9'), (50, 'text10');

1894

select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id);

1895

id text id text id text

1896

1 text1 1 text1 1 text1

1897

2 text2 2 text2 2 text2

1898

3 text3 3 text3 3 text3

1899

4 text4 4 text4 4 text4

1900

5 text5 5 text5 5 text5

1901

6 text6 6 text6 6 text6

1902

7 text7 7 text7 7 text7

1903

8 text8 8 text8 8 text8

1904

9 text9 9 text9 9 text9

1905

10 text10 10 text10 10 text10

1906

11 text11 11 text1 11 text11

1907

12 text12 12 text2 12 text12

1908

1000 text1000 NULL NULL 1000 text1000

1909

1001 text1001 NULL NULL 1000 text1000

1910

explain extended select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id);

1911

id select_type table type possible_keys key key_len ref rows filtered Extra

1912

1 SIMPLE a ALL NULL NULL NULL NULL 14 100.00

1913

1 SIMPLE b eq_ref PRIMARY PRIMARY 4 test.a.id 2 100.00

1914

1 SIMPLE c eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using index condition

1915

Warnings:

1916

Note 1003 select `test`.`a`.`id` AS `id`,`test`.`a`.`text` AS `text`,`test`.`b`.`id` AS `id`,`test`.`b`.`text` AS `text`,`test`.`c`.`id` AS `id`,`test`.`c`.`text` AS `text` from `test`.`t1` `a` left join `test`.`t2` `b` on(((`test`.`b`.`id` = `test`.`a`.`id`) or isnull(`test`.`b`.`id`))) join `test`.`t1` `c` where (if(isnull(`test`.`b`.`id`),1000,`test`.`b`.`id`) = `test`.`c`.`id`)

1917

drop table t1,t2;

1918

create table t1 (a int);

1919

insert into t1 values (1);

1920

explain select benchmark(1000, (select a from t1 where a=sha(rand())));

1921

id select_type table type possible_keys key key_len ref rows Extra

1922

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used

1923

2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 1

1924

drop table t1;

1925

create table t1(id int);

1926

create table t2(id int);

1927

create table t3(flag int);

1928

select (select * from t3 where id not null) from t1, t2;

1929

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'null) from t1, t2' at line 1

1930

drop table t1,t2,t3;

1931

CREATE TABLE t1 (id INT);

1932

CREATE TABLE t2 (id INT);

1933

INSERT INTO t1 VALUES (1), (2);

1934

INSERT INTO t2 VALUES (1);

1935

SELECT t1.id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id);

1936

id c

1937

1 1

1938

2 0

1939

SELECT id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id);

1940

id c

1941

1 1

1942

2 0

1943

SELECT t1.id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id) ORDER BY t1.id;

1944

id c

1945

1 1

1946

2 0

1947

SELECT id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id) ORDER BY id;

1948

id c

1949

1 1

1950

2 0

1951

DROP TABLE t1,t2;

1952

CREATE TABLE t1 ( a int, b int );

1953

INSERT INTO t1 VALUES (1,1),(2,2),(3,3);

1954

SELECT a FROM t1 WHERE a > ANY ( SELECT a FROM t1 WHERE b = 2 );

1955

1956

1957

SELECT a FROM t1 WHERE a < ANY ( SELECT a FROM t1 WHERE b = 2 );

1958

1959

1960

SELECT a FROM t1 WHERE a = ANY ( SELECT a FROM t1 WHERE b = 2 );

1961

1962

1963

SELECT a FROM t1 WHERE a >= ANY ( SELECT a FROM t1 WHERE b = 2 );

1964

1965

1966

1967

SELECT a FROM t1 WHERE a <= ANY ( SELECT a FROM t1 WHERE b = 2 );

1968

1969

1970

1971

SELECT a FROM t1 WHERE a <> ANY ( SELECT a FROM t1 WHERE b = 2 );

1972

1973

1974

1975

SELECT a FROM t1 WHERE a > ALL ( SELECT a FROM t1 WHERE b = 2 );

1976

1977

1978

SELECT a FROM t1 WHERE a < ALL ( SELECT a FROM t1 WHERE b = 2 );

1979

1980

1981

SELECT a FROM t1 WHERE a = ALL ( SELECT a FROM t1 WHERE b = 2 );

1982

1983

1984

SELECT a FROM t1 WHERE a >= ALL ( SELECT a FROM t1 WHERE b = 2 );

1985

1986

1987

1988

SELECT a FROM t1 WHERE a <= ALL ( SELECT a FROM t1 WHERE b = 2 );

1989

1990

1991

1992

SELECT a FROM t1 WHERE a <> ALL ( SELECT a FROM t1 WHERE b = 2 );

1993

1994

1995

1996

ALTER TABLE t1 ADD INDEX (a);

1997

SELECT a FROM t1 WHERE a > ANY ( SELECT a FROM t1 WHERE b = 2 );

1998

1999

2000

SELECT a FROM t1 WHERE a < ANY ( SELECT a FROM t1 WHERE b = 2 );

2001

2002

2003

SELECT a FROM t1 WHERE a = ANY ( SELECT a FROM t1 WHERE b = 2 );

2004

2005

2006

SELECT a FROM t1 WHERE a >= ANY ( SELECT a FROM t1 WHERE b = 2 );

2007

2008

2009

2010

SELECT a FROM t1 WHERE a <= ANY ( SELECT a FROM t1 WHERE b = 2 );

2011

2012

2013

2014

SELECT a FROM t1 WHERE a <> ANY ( SELECT a FROM t1 WHERE b = 2 );

2015

2016

2017

2018

SELECT a FROM t1 WHERE a > ALL ( SELECT a FROM t1 WHERE b = 2 );

2019

2020

2021

SELECT a FROM t1 WHERE a < ALL ( SELECT a FROM t1 WHERE b = 2 );

2022

2023

2024

SELECT a FROM t1 WHERE a = ALL ( SELECT a FROM t1 WHERE b = 2 );

2025

2026

2027

SELECT a FROM t1 WHERE a >= ALL ( SELECT a FROM t1 WHERE b = 2 );

2028

2029

2030

2031

SELECT a FROM t1 WHERE a <= ALL ( SELECT a FROM t1 WHERE b = 2 );

2032

2033

2034

2035

SELECT a FROM t1 WHERE a <> ALL ( SELECT a FROM t1 WHERE b = 2 );

2036

2037

2038

2039

SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 HAVING a = 2);

2040

2041

2042

SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 HAVING a = 2);

2043

2044

2045

SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 HAVING a = 2);

2046

2047

2048

SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 HAVING a = 2);

2049

2050

2051

2052

SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 HAVING a = 2);

2053

2054

2055

2056

SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 HAVING a = 2);

2057

2058

2059

2060

SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 HAVING a = 2);

2061

2062

2063

SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 HAVING a = 2);

2064

2065

2066

SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 HAVING a = 2);

2067

2068

2069

SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 HAVING a = 2);

2070

2071

2072

2073

SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 HAVING a = 2);

2074

2075

2076

2077

SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 HAVING a = 2);

2078

2079

2080

2081

SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2082

2083

2084

SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2085

2086

2087

SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2088

2089

2090

SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2091

2092

2093

2094

SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2095

2096

2097

2098

SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2099

2100

2101

2102

SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2103

2104

2105

SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2106

2107

2108

SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2109

2110

2111

SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2112

2113

2114

2115

SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2116

2117

2118

2119

SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2);

2120

2121

2122

2123

SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2124

2125

2126

SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2127

2128

2129

SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2130

2131

2132

SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2133

2134

2135

2136

SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2137

2138

2139

2140

SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2141

2142

2143

2144

SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2145

2146

2147

SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2148

2149

2150

SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2151

2152

2153

SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2154

2155

2156

2157

SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2158

2159

2160

2161

SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2);

2162

2163

2164

2165

SELECT a FROM t1 WHERE (1,2) > ANY (SELECT a FROM t1 WHERE b = 2);

2166

ERROR 21000: Operand should contain 1 column(s)

2167

SELECT a FROM t1 WHERE a > ANY (SELECT a,2 FROM t1 WHERE b = 2);

2168

ERROR 21000: Operand should contain 1 column(s)

2169

SELECT a FROM t1 WHERE (1,2) > ANY (SELECT a,2 FROM t1 WHERE b = 2);

2170

ERROR 21000: Operand should contain 1 column(s)

2171

SELECT a FROM t1 WHERE (1,2) > ALL (SELECT a FROM t1 WHERE b = 2);

2172

ERROR 21000: Operand should contain 1 column(s)

2173

SELECT a FROM t1 WHERE a > ALL (SELECT a,2 FROM t1 WHERE b = 2);

2174

ERROR 21000: Operand should contain 1 column(s)

2175

SELECT a FROM t1 WHERE (1,2) > ALL (SELECT a,2 FROM t1 WHERE b = 2);

2176

ERROR 21000: Operand should contain 1 column(s)

2177

SELECT a FROM t1 WHERE (1,2) = ALL (SELECT a,2 FROM t1 WHERE b = 2);

2178

ERROR 21000: Operand should contain 1 column(s)

2179

SELECT a FROM t1 WHERE (1,2) <> ANY (SELECT a,2 FROM t1 WHERE b = 2);

2180

ERROR 21000: Operand should contain 1 column(s)

2181

SELECT a FROM t1 WHERE (1,2) = ANY (SELECT a FROM t1 WHERE b = 2);

2182

ERROR 21000: Operand should contain 2 column(s)

2183

SELECT a FROM t1 WHERE a = ANY (SELECT a,2 FROM t1 WHERE b = 2);

2184

ERROR 21000: Operand should contain 1 column(s)

2185

SELECT a FROM t1 WHERE (1,2) = ANY (SELECT a,2 FROM t1 WHERE b = 2);

2186

2187

SELECT a FROM t1 WHERE (1,2) <> ALL (SELECT a FROM t1 WHERE b = 2);

2188

ERROR 21000: Operand should contain 2 column(s)

2189

SELECT a FROM t1 WHERE a <> ALL (SELECT a,2 FROM t1 WHERE b = 2);

2190

ERROR 21000: Operand should contain 1 column(s)

2191

SELECT a FROM t1 WHERE (1,2) <> ALL (SELECT a,2 FROM t1 WHERE b = 2);

2192

2193

2194

2195

2196

SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 WHERE b = 2);

2197

2198

2199

SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 WHERE b = 2);

2200

2201

2202

2203

SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 HAVING a = 2);

2204

2205

2206

SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 HAVING a = 2);

2207

2208

2209

2210

SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 WHERE b = 2 UNION SELECT a,1 FROM t1 WHERE b = 2);

2211

2212

2213

SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 WHERE b = 2 UNION SELECT a,1 FROM t1 WHERE b = 2);

2214

2215

2216

2217

SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 HAVING a = 2 UNION SELECT a,1 FROM t1 HAVING a = 2);

2218

2219

2220

SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 HAVING a = 2 UNION SELECT a,1 FROM t1 HAVING a = 2);

2221

2222

2223

2224

SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2 group by a);

2225

2226

2227

SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2 group by a);

2228

2229

2230

SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2 group by a);

2231

2232

2233

SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2 group by a);

2234

2235

2236

2237

SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2 group by a);

2238

2239

2240

2241

SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2 group by a);

2242

2243

2244

2245

SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2 group by a);

2246

2247

2248

SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2 group by a);

2249

2250

2251

SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2 group by a);

2252

2253

2254

SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2 group by a);

2255

2256

2257

2258

SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2 group by a);

2259

2260

2261

2262

SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2 group by a);

2263

2264

2265

2266

SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 group by a HAVING a = 2);

2267

2268

2269

SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 group by a HAVING a = 2);

2270

2271

2272

SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 group by a HAVING a = 2);

2273

2274

2275

SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 group by a HAVING a = 2);

2276

2277

2278

2279

SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 group by a HAVING a = 2);

2280

2281

2282

2283

SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 group by a HAVING a = 2);

2284

2285

2286

2287

SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 group by a HAVING a = 2);

2288

2289

2290

SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 group by a HAVING a = 2);

2291

2292

2293

SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 group by a HAVING a = 2);

2294

2295

2296

SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 group by a HAVING a = 2);

2297

2298

2299

2300

SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 group by a HAVING a = 2);

2301

2302

2303

2304

SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 group by a HAVING a = 2);

2305

2306

2307

2308

SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a > t1.a), '-') from t1 a;

2309

concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a > t1.a), '-')

2310

2311

2312

2313

SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a < t1.a), '-') from t1 a;

2314

concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a < t1.a), '-')

2315

2316

2317

2318

SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a = t1.a), '-') from t1 a;

2319

concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a = t1.a), '-')

2320

2321

2322

2323

DROP TABLE t1;

2324

CREATE TABLE t1 ( a double, b double );

2325

INSERT INTO t1 VALUES (1,1),(2,2),(3,3);

2326

SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2e0);

2327

2328

2329

SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2e0);

2330

2331

2332

SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2e0);

2333

2334

2335

SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2e0);

2336

2337

2338

2339

SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2e0);

2340

2341

2342

2343

SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2e0);

2344

2345

2346

2347

SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2e0);

2348

2349

2350

SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2e0);

2351

2352

2353

SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2e0);

2354

2355

2356

SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2e0);

2357

2358

2359

2360

SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2e0);

2361

2362

2363

2364

SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2e0);

2365

2366

2367

2368

DROP TABLE t1;

2369

CREATE TABLE t1 ( a char(1), b char(1));

2370

INSERT INTO t1 VALUES ('1','1'),('2','2'),('3','3');

2371

SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = '2');

2372

2373

2374

SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = '2');

2375

2376

2377

SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = '2');

2378

2379

2380

SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = '2');

2381

2382

2383

2384

SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = '2');

2385

2386

2387

2388

SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = '2');

2389

2390

2391

2392

SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = '2');

2393

2394

2395

SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = '2');

2396

2397

2398

SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = '2');

2399

2400

2401

SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = '2');

2402

2403

2404

2405

SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = '2');

2406

2407

2408

2409

SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = '2');

2410

2411

2412

2413

DROP TABLE t1;

2414

create table t1 (a int, b int);

2415

insert into t1 values (1,2),(3,4);

2416

select * from t1 up where exists (select * from t1 where t1.a=up.a);

2417

a b

2418

1 2

2419

3 4

2420

explain extended select * from t1 up where exists (select * from t1 where t1.a=up.a);

2421

id select_type table type possible_keys key key_len ref rows filtered Extra

2422

1 PRIMARY up ALL NULL NULL NULL NULL 2 100.00 Using where

2423

2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where

2424

Warnings:

2425

Note 1276 Field or reference 'test.up.a' of SELECT #2 was resolved in SELECT #1

2426

Note 1003 select `test`.`up`.`a` AS `a`,`test`.`up`.`b` AS `b` from `test`.`t1` `up` where <expr_cache><`test`.`up`.`a`>(exists(select 1 from `test`.`t1` where (`test`.`t1`.`a` = `test`.`up`.`a`)))

2427

drop table t1;

2428

CREATE TABLE t1 (t1_a int);

2429

INSERT INTO t1 VALUES (1);

2430

CREATE TABLE t2 (t2_a int, t2_b int, PRIMARY KEY (t2_a, t2_b));

2431

INSERT INTO t2 VALUES (1, 1), (1, 2);

2432

SELECT * FROM t1, t2 table2 WHERE t1_a = 1 AND table2.t2_a = 1

2433

HAVING table2.t2_b = (SELECT MAX(t2_b) FROM t2 WHERE t2_a = table2.t2_a);

2434

t1_a t2_a t2_b

2435

1 1 2

2436

DROP TABLE t1, t2;

2437

CREATE TABLE t1 (id int(11) default NULL,name varchar(10) default NULL);

2438

INSERT INTO t1 VALUES (1,'Tim'),(2,'Rebecca'),(3,NULL);

2439

CREATE TABLE t2 (id int(11) default NULL, pet varchar(10) default NULL);

2440

INSERT INTO t2 VALUES (1,'Fido'),(2,'Spot'),(3,'Felix');

2441

SELECT a.*, b.* FROM (SELECT * FROM t1) AS a JOIN t2 as b on a.id=b.id;

2442

id name id pet

2443

1 Tim 1 Fido

2444

2 Rebecca 2 Spot

2445

3 NULL 3 Felix

2446

drop table t1,t2;

2447

CREATE TABLE t1 ( a int, b int );

2448

CREATE TABLE t2 ( c int, d int );

2449

INSERT INTO t1 VALUES (1,2), (2,3), (3,4);

2450

SELECT a AS abc, b FROM t1 outr WHERE b =

2451

(SELECT MIN(b) FROM t1 WHERE a=outr.a);

2452

abc b

2453

1 2

2454

2 3

2455

3 4

2456

INSERT INTO t2 SELECT a AS abc, b FROM t1 outr WHERE b =

2457

(SELECT MIN(b) FROM t1 WHERE a=outr.a);

2458

select * from t2;

2459

c d

2460

1 2

2461

2 3

2462

3 4

2463

CREATE TABLE t3 SELECT a AS abc, b FROM t1 outr WHERE b =

2464

(SELECT MIN(b) FROM t1 WHERE a=outr.a);

2465

select * from t3;

2466

abc b

2467

1 2

2468

2 3

2469

3 4

2470

prepare stmt1 from "INSERT INTO t2 SELECT a AS abc, b FROM t1 outr WHERE b = (SELECT MIN(b) FROM t1 WHERE a=outr.a);";

2471

execute stmt1;

2472

deallocate prepare stmt1;

2473

select * from t2;

2474

c d

2475

1 2

2476

2 3

2477

3 4

2478

1 2

2479

2 3

2480

3 4

2481

drop table t3;

2482

prepare stmt1 from "CREATE TABLE t3 SELECT a AS abc, b FROM t1 outr WHERE b = (SELECT MIN(b) FROM t1 WHERE a=outr.a);";

2483

execute stmt1;

2484

select * from t3;

2485

abc b

2486

1 2

2487

2 3

2488

3 4

2489

deallocate prepare stmt1;

2490

DROP TABLE t1, t2, t3;

2491

CREATE TABLE `t1` ( `a` int(11) default NULL) ENGINE=MyISAM DEFAULT CHARSET=latin1;

2492

insert into t1 values (1);

2493

CREATE TABLE `t2` ( `b` int(11) default NULL, `a` int(11) default NULL) ENGINE=MyISAM DEFAULT CHARSET=latin1;

2494

insert into t2 values (1,2);

2495

select t000.a, count(*) `C` FROM t1 t000 GROUP BY t000.a HAVING count(*) > ALL (SELECT count(*) FROM t2 t001 WHERE t001.a=1);

2496

a C

2497

1 1

2498

drop table t1,t2;

2499

create table t1 (a int not null auto_increment primary key, b varchar(40), fulltext(b));

2500

insert into t1 (b) values ('ball'),('ball games'), ('games'), ('foo'), ('foobar'), ('Serg'), ('Sergei'),('Georg'), ('Patrik'),('Hakan');

2501

create table t2 (a int);

2502

insert into t2 values (1),(3),(2),(7);

2503

select a,b from t1 where match(b) against ('Ball') > 0;

2504

a b

2505

1 ball

2506

2 ball games

2507

select a from t2 where a in (select a from t1 where match(b) against ('Ball') > 0);

2508

2509

2510

2511

drop table t1,t2;

2512

CREATE TABLE t1(`IZAVORGANG_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`KUERZEL` VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_bin,`IZAANALYSEART_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`IZAPMKZ_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin);

2513

CREATE INDEX AK01IZAVORGANG ON t1(izaAnalyseart_id,Kuerzel);

2514

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000001','601','D0000000001','I0000000001');

2515

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000002','602','D0000000001','I0000000001');

2516

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000003','603','D0000000001','I0000000001');

2517

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000004','101','D0000000001','I0000000001');

2518

SELECT `IZAVORGANG_ID` FROM t1 WHERE `KUERZEL` IN(SELECT MIN(`KUERZEL`)`Feld1` FROM t1 WHERE `KUERZEL` LIKE'601%'And`IZAANALYSEART_ID`='D0000000001');

2519

IZAVORGANG_ID

2520

D0000000001

2521

drop table t1;

2522

CREATE TABLE `t1` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`));

2523

CREATE TABLE `t2` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`));

2524

insert into t1 values (1,1),(1,2),(2,1),(2,2);

2525

insert into t2 values (1,2),(2,2);

2526

select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);

2527

aid bid

2528

1 1

2529

2 1

2530

alter table t2 drop primary key;

2531

alter table t2 add key KEY1 (aid, bid);

2532

select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);

2533

aid bid

2534

1 1

2535

2 1

2536

alter table t2 drop key KEY1;

2537

alter table t2 add primary key (bid, aid);

2538

select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);

2539

aid bid

2540

1 1

2541

2 1

2542

drop table t1,t2;

2543

CREATE TABLE t1 (howmanyvalues bigint, avalue int);

2544

INSERT INTO t1 VALUES (1, 1),(2, 1),(2, 2),(3, 1),(3, 2),(3, 3),(4, 1),(4, 2),(4, 3),(4, 4);

2545

SELECT howmanyvalues, count(*) from t1 group by howmanyvalues;

2546

howmanyvalues count(*)

2547

1 1

2548

2 2

2549

3 3

2550

4 4

2551

SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues;

2552

howmanyvalues mycount

2553

1 1

2554

2 2

2555

3 3

2556

4 4

2557

CREATE INDEX t1_howmanyvalues_idx ON t1 (howmanyvalues);

2558

SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues+1 = a.howmanyvalues+1) as mycount from t1 a group by a.howmanyvalues;

2559

howmanyvalues mycount

2560

1 1

2561

2 2

2562

3 3

2563

4 4

2564

SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues;

2565

howmanyvalues mycount

2566

1 1

2567

2 2

2568

3 3

2569

4 4

2570

SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.avalue) as mycount from t1 a group by a.howmanyvalues;

2571

howmanyvalues mycount

2572

1 1

2573

2 1

2574

3 1

2575

4 1

2576

drop table t1;

2577

create table t1 (x int);

2578

select (select b.x from t1 as b where b.x=a.x) from t1 as a where a.x=2 group by a.x;

2579

(select b.x from t1 as b where b.x=a.x)

2580

drop table t1;

2581

CREATE TABLE `t1` ( `master` int(10) unsigned NOT NULL default '0', `map` smallint(6) unsigned NOT NULL default '0', `slave` int(10) unsigned NOT NULL default '0', `access` int(10) unsigned NOT NULL default '0', UNIQUE KEY `access_u` (`master`,`map`,`slave`));

2582

INSERT INTO `t1` VALUES (1,0,0,700),(1,1,1,400),(1,5,5,400),(1,12,12,400),(1,12,32,400),(4,12,32,400);

2583

CREATE TABLE `t2` ( `id` int(10) unsigned NOT NULL default '0', `pid` int(10) unsigned NOT NULL default '0', `map` smallint(6) unsigned NOT NULL default '0', `level` tinyint(4) unsigned NOT NULL default '0', `title` varchar(255) default NULL, PRIMARY KEY (`id`,`pid`,`map`), KEY `level` (`level`), KEY `id` (`id`,`map`)) ;

2584

INSERT INTO `t2` VALUES (6,5,12,7,'a'),(12,0,0,7,'a'),(12,1,0,7,'a'),(12,5,5,7,'a'),(12,5,12,7,'a');

2585

SELECT b.sc FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b;

2586

ERROR 42S22: Unknown column 'b.sc' in 'field list'

2587

SELECT b.ac FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b;

2588

2589

700

2590

NULL

2591

drop tables t1,t2;

2592

create table t1 (a int not null, b int not null, c int, primary key (a,b));

2593

insert into t1 values (1,1,1), (2,2,2), (3,3,3);

2594

set @b:= 0;

2595

explain select sum(a) from t1 where b > @b;

2596

id select_type table type possible_keys key key_len ref rows Extra

2597

1 SIMPLE t1 index NULL PRIMARY 8 NULL 3 Using where; Using index

2598

set @a:= (select sum(a) from t1 where b > @b);

2599

explain select a from t1 where c=2;

2600

id select_type table type possible_keys key key_len ref rows Extra

2601

1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where

2602

do @a:= (select sum(a) from t1 where b > @b);

2603

explain select a from t1 where c=2;

2604

id select_type table type possible_keys key key_len ref rows Extra

2605

1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where

2606

drop table t1;

2607

set @got_val= (SELECT 1 FROM (SELECT 'A' as my_col) as T1 ) ;

2608

create table t1 (a int, b int);

2609

create table t2 (a int, b int);

2610

insert into t1 values (1,1),(1,2),(1,3),(2,4),(2,5);

2611

insert into t2 values (1,3),(2,1);

2612

select distinct a,b, (select max(b) from t2 where t1.b=t2.a) from t1 order by t1.b;

2613

a b (select max(b) from t2 where t1.b=t2.a)

2614

1 1 3

2615

1 2 1

2616

1 3 NULL

2617

2 4 NULL

2618

2 5 NULL

2619

drop table t1, t2;

2620

create table t1 (id int);

2621

create table t2 (id int, body text, fulltext (body));

2622

insert into t1 values(1),(2),(3);

2623

insert into t2 values (1,'test'), (2,'mysql'), (3,'test'), (4,'test');

2624

select count(distinct id) from t1 where id in (select id from t2 where match(body) against ('mysql' in boolean mode));

2625

count(distinct id)

2626

2627

drop table t2,t1;

2628

create table t1 (s1 int,s2 int);

2629

insert into t1 values (20,15);

2630

select * from t1 where (('a',null) <=> (select 'a',s2 from t1 where s1 = 0));

2631

s1 s2

2632

drop table t1;

2633

create table t1 (s1 int);

2634

insert into t1 values (1),(null);

2635

select * from t1 where s1 < all (select s1 from t1);

2636

2637

select s1, s1 < all (select s1 from t1) from t1;

2638

s1 s1 < all (select s1 from t1)

2639

1 0

2640

NULL NULL

2641

drop table t1;

2642

CREATE TABLE t1 (

2643

Code char(3) NOT NULL default '',

2644

Name char(52) NOT NULL default '',

2645

Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL default 'Asia',

2646

Region char(26) NOT NULL default '',

2647

SurfaceArea float(10,2) NOT NULL default '0.00',

2648

IndepYear smallint(6) default NULL,

2649

Population int(11) NOT NULL default '0',

2650

LifeExpectancy float(3,1) default NULL,

2651

GNP float(10,2) default NULL,

2652

GNPOld float(10,2) default NULL,

2653

LocalName char(45) NOT NULL default '',

2654

GovernmentForm char(45) NOT NULL default '',

2655

HeadOfState char(60) default NULL,

2656

Capital int(11) default NULL,

2657

Code2 char(2) NOT NULL default ''

2658

) ENGINE=MyISAM;

2659

INSERT INTO t1 VALUES ('XXX','Xxxxx','Oceania','Xxxxxx',26.00,0,0,0,0,0,'Xxxxx','Xxxxx','Xxxxx',NULL,'XX');

2660

INSERT INTO t1 VALUES ('ASM','American Samoa','Oceania','Polynesia',199.00,0,68000,75.1,334.00,NULL,'Amerika Samoa','US Territory','George W. Bush',54,'AS');

2661

INSERT INTO t1 VALUES ('ATF','French Southern territories','Antarctica','Antarctica',7780.00,0,0,NULL,0.00,NULL,'Terres australes françaises','Nonmetropolitan Territory of France','Jacques Chirac',NULL,'TF');

2662

INSERT INTO t1 VALUES ('UMI','United States Minor Outlying Islands','Oceania','Micronesia/Caribbean',16.00,0,0,NULL,0.00,NULL,'United States Minor Outlying Islands','Dependent Territory of the US','George W. Bush',NULL,'UM');

2663

/*!40000 ALTER TABLE t1 ENABLE KEYS */;

2664

SELECT DISTINCT Continent AS c FROM t1 outr WHERE

2665

Code <> SOME ( SELECT Code FROM t1 WHERE Continent = outr.Continent AND

2666

Population < 200);

2667

2668

Oceania

2669

drop table t1;

2670

create table t1 (a1 int);

2671

create table t2 (b1 int);

2672

select * from t1 where a2 > any(select b1 from t2);

2673

ERROR 42S22: Unknown column 'a2' in 'IN/ALL/ANY subquery'

2674

select * from t1 where a1 > any(select b1 from t2);

2675

2676

drop table t1,t2;

2677

create table t1 (a integer, b integer);

2678

select (select * from t1) = (select 1,2);

2679

(select * from t1) = (select 1,2)

2680

NULL

2681

select (select 1,2) = (select * from t1);

2682

(select 1,2) = (select * from t1)

2683

NULL

2684

select row(1,2) = ANY (select * from t1);

2685

row(1,2) = ANY (select * from t1)

2686

2687

select row(1,2) != ALL (select * from t1);

2688

row(1,2) != ALL (select * from t1)

2689

2690

drop table t1;

2691

create table t1 (a integer, b integer);

2692

select row(1,(2,2)) in (select * from t1 );

2693

ERROR 21000: Operand should contain 2 column(s)

2694

select row(1,(2,2)) = (select * from t1 );

2695

ERROR 21000: Operand should contain 2 column(s)

2696

select (select * from t1) = row(1,(2,2));

2697

ERROR 21000: Operand should contain 1 column(s)

2698

drop table t1;

2699

create table t1 (a integer);

2700

insert into t1 values (1);

2701

select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx ;

2702

ERROR 42S22: Reference 'xx' not supported (forward reference in item list)

2703

select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx;

2704

ERROR 42S22: Reference 'xx' not supported (forward reference in item list)

2705

select 1 as xx, 1 = ALL ( select 1 from t1 where 1 = xx );

2706

xx 1 = ALL ( select 1 from t1 where 1 = xx )

2707

1 1

2708

select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx;

2709

ERROR 42S22: Reference 'xx' not supported (forward reference in item list)

2710

select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx from DUAL;

2711

ERROR 42S22: Reference 'xx' not supported (forward reference in item list)

2712

drop table t1;

2713

CREATE TABLE t1 (

2714

categoryId int(11) NOT NULL,

2715

courseId int(11) NOT NULL,

2716

startDate datetime NOT NULL,

2717

endDate datetime NOT NULL,

2718

createDate datetime NOT NULL,

2719

modifyDate timestamp NOT NULL,

2720

attributes text NOT NULL

2721

);

2722

INSERT INTO t1 VALUES (1,41,'2004-02-09','2010-01-01','2004-02-09','2004-02-09',''),

2723

(1,86,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''),

2724

(1,87,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''),

2725

(2,52,'2004-03-15','2004-10-01','2004-03-15','2004-09-17',''),

2726

(2,53,'2004-03-16','2004-10-01','2004-03-16','2004-09-17',''),

2727

(2,88,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''),

2728

(2,89,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''),

2729

(3,51,'2004-02-09','2010-01-01','2004-02-09','2004-02-09',''),

2730

(5,12,'2004-02-18','2010-01-01','2004-02-18','2004-02-18','');

2731

CREATE TABLE t2 (

2732

userId int(11) NOT NULL,

2733

courseId int(11) NOT NULL,

2734

date datetime NOT NULL

2735

);

2736

INSERT INTO t2 VALUES (5141,71,'2003-11-18'),

2737

(5141,72,'2003-11-25'),(5141,41,'2004-08-06'),

2738

(5141,52,'2004-08-06'),(5141,53,'2004-08-06'),

2739

(5141,12,'2004-08-06'),(5141,86,'2004-10-21'),

2740

(5141,87,'2004-10-21'),(5141,88,'2004-10-21'),

2741

(5141,89,'2004-10-22'),(5141,51,'2004-10-26');

2742

CREATE TABLE t3 (

2743

groupId int(11) NOT NULL,

2744

parentId int(11) NOT NULL,

2745

startDate datetime NOT NULL,

2746

endDate datetime NOT NULL,

2747

createDate datetime NOT NULL,

2748

modifyDate timestamp NOT NULL,

2749

ordering int(11)

2750

);

2751

INSERT INTO t3 VALUES (12,9,'1000-01-01','3999-12-31','2004-01-29','2004-01-29',NULL);

2752

CREATE TABLE t4 (

2753

id int(11) NOT NULL,

2754

groupTypeId int(11) NOT NULL,

2755

groupKey varchar(50) NOT NULL,

2756

name text,

2757

ordering int(11),

2758

description text,

2759

createDate datetime NOT NULL,

2760

modifyDate timestamp NOT NULL

2761

);

2762

INSERT INTO t4 VALUES (9,5,'stationer','stationer',0,'Stationer','2004-01-29','2004-01-29'),

2763

(12,5,'group2','group2',0,'group2','2004-01-29','2004-01-29');

2764

CREATE TABLE t5 (

2765

userId int(11) NOT NULL,

2766

groupId int(11) NOT NULL,

2767

createDate datetime NOT NULL,

2768

modifyDate timestamp NOT NULL

2769

);

2770

INSERT INTO t5 VALUES (5141,12,'2004-08-06','2004-08-06');

2771

select

2772

count(distinct t2.userid) pass,

2773

groupstuff.*,

2774

count(t2.courseid) crse,

2775

t1.categoryid,

2776

t2.courseid,

2777

date_format(date, '%b%y') as colhead

2778

from t2

2779

join t1 on t2.courseid=t1.courseid

2780

join

2781

(

2782

select

2783

t5.userid,

2784

parentid,

2785

parentgroup,

2786

childid,

2787

groupname,

2788

grouptypeid

2789

from t5

2790

join

2791

(

2792

select t4.id as parentid,

2793

t4.name as parentgroup,

2794

t4.id as childid,

2795

t4.name as groupname,

2796

t4.grouptypeid

2797

from t4

2798

) as gin on t5.groupid=gin.childid

2799

) as groupstuff on t2.userid = groupstuff.userid

2800

group by

2801

groupstuff.groupname, colhead , t2.courseid;

2802

pass userid parentid parentgroup childid groupname grouptypeid crse categoryid courseid colhead

2803

1 5141 12 group2 12 group2 5 1 5 12 Aug04

2804

1 5141 12 group2 12 group2 5 1 1 41 Aug04

2805

1 5141 12 group2 12 group2 5 1 2 52 Aug04

2806

1 5141 12 group2 12 group2 5 1 2 53 Aug04

2807

1 5141 12 group2 12 group2 5 1 3 51 Oct04

2808

1 5141 12 group2 12 group2 5 1 1 86 Oct04

2809

1 5141 12 group2 12 group2 5 1 1 87 Oct04

2810

1 5141 12 group2 12 group2 5 1 2 88 Oct04

2811

1 5141 12 group2 12 group2 5 1 2 89 Oct04

2812

drop table t1, t2, t3, t4, t5;

2813

create table t1 (a int);

2814

insert into t1 values (1), (2), (3);

2815

SELECT 1 FROM t1 WHERE (SELECT 1) in (SELECT 1);

2816

2817

2818

2819

2820

drop table t1;

2821

create table t1 (a int);

2822

create table t2 (a int);

2823

insert into t1 values (1),(2);

2824

insert into t2 values (0),(1),(2),(3);

2825

select a from t2 where a in (select a from t1);

2826

2827

2828

2829

select a from t2 having a in (select a from t1);

2830

2831

2832

2833

prepare stmt1 from "select a from t2 where a in (select a from t1)";

2834

execute stmt1;

2835

2836

2837

2838

execute stmt1;

2839

2840

2841

2842

deallocate prepare stmt1;

2843

prepare stmt1 from "select a from t2 having a in (select a from t1)";

2844

execute stmt1;

2845

2846

2847

2848

execute stmt1;

2849

2850

2851

2852

deallocate prepare stmt1;

2853

drop table t1, t2;

2854

create table t1 (a int, b int);

2855

insert into t1 values (1,2);

2856

select 1 = (select * from t1);

2857

ERROR 21000: Operand should contain 1 column(s)

2858

select (select * from t1) = 1;

2859

ERROR 21000: Operand should contain 2 column(s)

2860

select (1,2) = (select a from t1);

2861

ERROR 21000: Operand should contain 2 column(s)

2862

select (select a from t1) = (1,2);

2863

ERROR 21000: Operand should contain 1 column(s)

2864

select (1,2,3) = (select * from t1);

2865

ERROR 21000: Operand should contain 3 column(s)

2866

select (select * from t1) = (1,2,3);

2867

ERROR 21000: Operand should contain 2 column(s)

2868

drop table t1;

2869

CREATE TABLE `t1` (

2870

`itemid` bigint(20) unsigned NOT NULL auto_increment,

2871

`sessionid` bigint(20) unsigned default NULL,

2872

`time` int(10) unsigned NOT NULL default '0',

2873

`type` set('A','D','E','F','G','I','L','N','U') collate latin1_general_ci NOT

2874

NULL default '',

2875

`data` text collate latin1_general_ci NOT NULL,

2876

PRIMARY KEY (`itemid`)

2877

) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;

2878

INSERT INTO `t1` VALUES (1, 1, 1, 'D', '');

2879

CREATE TABLE `t2` (

2880

`sessionid` bigint(20) unsigned NOT NULL auto_increment,

2881

`pid` int(10) unsigned NOT NULL default '0',

2882

`date` int(10) unsigned NOT NULL default '0',

2883

`ip` varchar(15) collate latin1_general_ci NOT NULL default '',

2884

PRIMARY KEY (`sessionid`)

2885

) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;

2886

INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1');

2887

SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30;

2888

ip count( e.itemid )

2889

10.10.10.1 1

2890

drop tables t1,t2;

2891

create table t1 (fld enum('0','1'));

2892

insert into t1 values ('1');

2893

select * from (select max(fld) from t1) as foo;

2894

max(fld)

2895

2896

drop table t1;

2897

set @tmp11867_optimizer_switch=@@optimizer_switch;

2898

set optimizer_switch='semijoin_with_cache=off';

2899

CREATE TABLE t1 (one int, two int, flag char(1));

2900

CREATE TABLE t2 (one int, two int, flag char(1));

2901

INSERT INTO t1 VALUES(1,2,'Y'),(2,3,'Y'),(3,4,'Y'),(5,6,'N'),(7,8,'N');

2902

INSERT INTO t2 VALUES(1,2,'Y'),(2,3,'Y'),(3,4,'Y'),(5,6,'N'),(7,8,'N');

2903

SELECT * FROM t1

2904

WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t2 WHERE flag = 'N');

2905

one two flag

2906

5 6 N

2907

7 8 N

2908

SELECT * FROM t1

2909

WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t1 WHERE flag = 'N');

2910

one two flag

2911

5 6 N

2912

7 8 N

2913

insert into t2 values (null,null,'N');

2914

insert into t2 values (null,3,'0');

2915

insert into t2 values (null,5,'0');

2916

insert into t2 values (10,null,'0');

2917

insert into t1 values (10,3,'0');

2918

insert into t1 values (10,5,'0');

2919

insert into t1 values (10,10,'0');

2920

SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N') as 'test' from t1;

2921

one two test

2922

1 2 NULL

2923

2 3 NULL

2924

3 4 NULL

2925

5 6 1

2926

7 8 1

2927

10 3 NULL

2928

10 5 NULL

2929

10 10 NULL

2930

SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');

2931

one two

2932

5 6

2933

7 8

2934

SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N' group by one,two) as 'test' from t1;

2935

one two test

2936

1 2 NULL

2937

2 3 NULL

2938

3 4 NULL

2939

5 6 1

2940

7 8 1

2941

10 3 NULL

2942

10 5 NULL

2943

10 10 NULL

2944

SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1;

2945

one two test

2946

1 2 0

2947

2 3 NULL

2948

3 4 0

2949

5 6 0

2950

7 8 0

2951

10 3 NULL

2952

10 5 NULL

2953

10 10 NULL

2954

SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;

2955

one two test

2956

1 2 0

2957

2 3 NULL

2958

3 4 0

2959

5 6 0

2960

7 8 0

2961

10 3 NULL

2962

10 5 NULL

2963

10 10 NULL

2964

explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1;

2965

id select_type table type possible_keys key key_len ref rows filtered Extra

2966

1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00

2967

2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where

2968

Warnings:

2969

Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`one`,`test`.`t1`.`two`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = '0') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)))) having (trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1`

2970

explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');

2971

id select_type table type possible_keys key key_len ref rows filtered Extra

2972

1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00

2973

1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 8 func,func 1 100.00

2974

2 MATERIALIZED t2 ALL NULL NULL NULL NULL 9 100.00 Using where

2975

Warnings:

2976

Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` semi join (`test`.`t2`) where (`test`.`t2`.`flag` = 'N')

2977

explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;

2978

id select_type table type possible_keys key key_len ref rows filtered Extra

2979

1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00

2980

2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where

2981

Warnings:

2982

2983

DROP TABLE t1,t2;

2984

set optimizer_switch=@tmp11867_optimizer_switch;

2985

CREATE TABLE t1 (a char(5), b char(5));

2986

INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa');

2987

SELECT * FROM t1 WHERE (a,b) IN (('aaa','aaa'), ('aaa','bbb'));

2988

a b

2989

aaa aaa

2990

DROP TABLE t1;

2991

CREATE TABLE t1 (a int);

2992

CREATE TABLE t2 (a int, b int);

2993

CREATE TABLE t3 (b int NOT NULL);

2994

INSERT INTO t1 VALUES (1), (2), (3), (4);

2995

INSERT INTO t2 VALUES (1,10), (3,30);

2996

SELECT * FROM t2 LEFT JOIN t3 ON t2.b=t3.b

2997

WHERE t3.b IS NOT NULL OR t2.a > 10;

2998

a b b

2999

SELECT * FROM t1

3000

WHERE t1.a NOT IN (SELECT a FROM t2 LEFT JOIN t3 ON t2.b=t3.b

3001

WHERE t3.b IS NOT NULL OR t2.a > 10);

3002

3003

3004

3005

3006

3007

DROP TABLE t1,t2,t3;

3008

CREATE TABLE t1 (f1 INT);

3009

CREATE TABLE t2 (f2 INT);

3010

INSERT INTO t1 VALUES (1);

3011

SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2);

3012

3013

3014

SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE 1=0);

3015

3016

3017

INSERT INTO t2 VALUES (1);

3018

INSERT INTO t2 VALUES (2);

3019

SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE f2=0);

3020

3021

3022

DROP TABLE t1, t2;

3023

select 1 from dual where 1 < any (select 2);

3024

3025

3026

select 1 from dual where 1 < all (select 2);

3027

3028

3029

select 1 from dual where 2 > any (select 1);

3030

3031

3032

select 1 from dual where 2 > all (select 1);

3033

3034

3035

select 1 from dual where 1 < any (select 2 from dual);

3036

3037

3038

select 1 from dual where 1 < all (select 2 from dual where 1!=1);

3039

3040

3041

create table t1 (s1 char);

3042

insert into t1 values (1),(2);

3043

select * from t1 where (s1 < any (select s1 from t1));

3044

3045

3046

select * from t1 where not (s1 < any (select s1 from t1));

3047

3048

3049

select * from t1 where (s1 < ALL (select s1+1 from t1));

3050

3051

3052

select * from t1 where not(s1 < ALL (select s1+1 from t1));

3053

3054

3055

select * from t1 where (s1+1 = ANY (select s1 from t1));

3056

3057

3058

select * from t1 where NOT(s1+1 = ANY (select s1 from t1));

3059

3060

3061

select * from t1 where (s1 = ALL (select s1/s1 from t1));

3062

3063

3064

select * from t1 where NOT(s1 = ALL (select s1/s1 from t1));

3065

3066

3067

drop table t1;

3068

create table t1 (

3069

retailerID varchar(8) NOT NULL,

3070

statusID int(10) unsigned NOT NULL,

3071

changed datetime NOT NULL,

3072

UNIQUE KEY retailerID (retailerID, statusID, changed)

3073

);

3074

INSERT INTO t1 VALUES("0026", "1", "2005-12-06 12:18:56");

3075

INSERT INTO t1 VALUES("0026", "2", "2006-01-06 12:25:53");

3076

INSERT INTO t1 VALUES("0037", "1", "2005-12-06 12:18:56");

3077

INSERT INTO t1 VALUES("0037", "2", "2006-01-06 12:25:53");

3078

INSERT INTO t1 VALUES("0048", "1", "2006-01-06 12:37:50");

3079

INSERT INTO t1 VALUES("0059", "1", "2006-01-06 12:37:50");

3080

select * from t1 r1

3081

where (r1.retailerID,(r1.changed)) in

3082

(SELECT r2.retailerId,(max(changed)) from t1 r2

3083

group by r2.retailerId);

3084

retailerID statusID changed

3085

0026 2 2006-01-06 12:25:53

3086

0037 2 2006-01-06 12:25:53

3087

0048 1 2006-01-06 12:37:50

3088

0059 1 2006-01-06 12:37:50

3089

drop table t1;

3090

create table t1(a int, primary key (a));

3091

insert into t1 values (10);

3092

create table t2 (a int primary key, b varchar(32), c int, unique key b(c, b));

3093

insert into t2(a, c, b) values (1,10,'359'), (2,10,'35988'), (3,10,'35989');

3094

explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r

3095

ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899'

3096

ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10;

3097

id select_type table type possible_keys key key_len ref rows Extra

3098

1 PRIMARY t1 system PRIMARY NULL NULL NULL 1

3099

1 PRIMARY r const PRIMARY PRIMARY 4 const 1

3100

2 SUBQUERY t2 range b b 40 NULL 2 Using where

3101

SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r

3102

ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899'

3103

ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10;

3104

a a b

3105

10 3 35989

3106

explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r

3107

ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899'

3108

ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10;

3109

id select_type table type possible_keys key key_len ref rows Extra

3110

1 PRIMARY t1 system PRIMARY NULL NULL NULL 1

3111

1 PRIMARY r const PRIMARY PRIMARY 4 const 1

3112

2 SUBQUERY t2 range b b 40 NULL 2 Using index condition

3113

SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r

3114

ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899'

3115

ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10;

3116

a a b

3117

10 1 359

3118

drop table t1,t2;

3119

CREATE TABLE t1 (

3120

field1 int NOT NULL,

3121

field2 int NOT NULL,

3122

field3 int NOT NULL,

3123

PRIMARY KEY (field1,field2,field3)

3124

);

3125

CREATE TABLE t2 (

3126

fieldA int NOT NULL,

3127

fieldB int NOT NULL,

3128

PRIMARY KEY (fieldA,fieldB)

3129

);

3130

INSERT INTO t1 VALUES

3131

(1,1,1), (1,1,2), (1,2,1), (1,2,2), (1,2,3), (1,3,1);

3132

INSERT INTO t2 VALUES (1,1), (1,2), (1,3);

3133

SELECT field1, field2, COUNT(*)

3134

FROM t1 GROUP BY field1, field2;

3135

field1 field2 COUNT(*)

3136

1 1 2

3137

1 2 3

3138

1 3 1

3139

SELECT field1, field2

3140

FROM t1

3141

GROUP BY field1, field2

3142

HAVING COUNT(*) >= ALL (SELECT fieldB

3143

FROM t2 WHERE fieldA = field1);

3144

field1 field2

3145

1 2

3146

SELECT field1, field2

3147

FROM t1

3148

GROUP BY field1, field2

3149

HAVING COUNT(*) < ANY (SELECT fieldB

3150

FROM t2 WHERE fieldA = field1);

3151

field1 field2

3152

1 1

3153

1 3

3154

DROP TABLE t1, t2;

3155

CREATE TABLE t1(a int, INDEX (a));

3156

INSERT INTO t1 VALUES (1), (3), (5), (7);

3157

INSERT INTO t1 VALUES (NULL);

3158

CREATE TABLE t2(a int);

3159

INSERT INTO t2 VALUES (1),(2),(3);

3160

EXPLAIN SELECT a, a IN (SELECT a FROM t1) FROM t2;

3161

id select_type table type possible_keys key key_len ref rows Extra

3162

1 PRIMARY t2 ALL NULL NULL NULL NULL 3

3163

2 SUBQUERY t1 index_subquery a a 5 func 2 Using index; Full scan on NULL key

3164

SELECT a, a IN (SELECT a FROM t1) FROM t2;

3165

a a IN (SELECT a FROM t1)

3166

1 1

3167

2 NULL

3168

3 1

3169

DROP TABLE t1,t2;

3170

CREATE TABLE t1 (a DATETIME);

3171

INSERT INTO t1 VALUES ('1998-09-23'), ('2003-03-25');

3172

CREATE TABLE t2 AS SELECT

3173

(SELECT a FROM t1 WHERE a < '2000-01-01') AS sub_a

3174

FROM t1 WHERE a > '2000-01-01';

3175

SHOW CREATE TABLE t2;

3176

Table Create Table

3177

t2 CREATE TABLE `t2` (

3178

`sub_a` datetime DEFAULT NULL

3179

) ENGINE=MyISAM DEFAULT CHARSET=latin1

3180

CREATE TABLE t3 AS (SELECT a FROM t1 WHERE a < '2000-01-01') UNION (SELECT a FROM t1 WHERE a > '2000-01-01');

3181

SHOW CREATE TABLE t3;

3182

Table Create Table

3183

t3 CREATE TABLE `t3` (

3184

`a` datetime DEFAULT NULL

3185

) ENGINE=MyISAM DEFAULT CHARSET=latin1

3186

DROP TABLE t1,t2,t3;

3187

CREATE TABLE t1 (a int);

3188

INSERT INTO t1 VALUES (1), (2);

3189

SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) > 0;

3190

3191

SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL;

3192

3193

3194

3195

EXPLAIN SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL;

3196

id select_type table type possible_keys key key_len ref rows Extra

3197

1 PRIMARY t1 ALL NULL NULL NULL NULL 2

3198

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

3199

DROP TABLE t1;

3200

CREATE TABLE t1 (a int);

3201

INSERT INTO t1 VALUES (2), (4), (1), (3);

3202

CREATE TABLE t2 (b int, c int);

3203

INSERT INTO t2 VALUES

3204

(2,1), (1,3), (2,1), (4,4), (2,2), (1,4);

3205

SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 2 );

3206

3207

3208

3209

3210

3211

SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 1);

3212

ERROR 21000: Subquery returns more than 1 row

3213

SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 2), a;

3214

3215

3216

3217

3218

3219

SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 1), a;

3220

ERROR 21000: Subquery returns more than 1 row

3221

SELECT b, MAX(c) FROM t2 GROUP BY b, (SELECT c FROM t2 WHERE b > 2);

3222

b MAX(c)

3223

1 4

3224

2 2

3225

4 4

3226

SELECT b, MAX(c) FROM t2 GROUP BY b, (SELECT c FROM t2 WHERE b > 1);

3227

ERROR 21000: Subquery returns more than 1 row

3228

SELECT a FROM t1 GROUP BY a

3229

HAVING IFNULL((SELECT b FROM t2 WHERE b > 2),

3230

(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3;

3231

3232

3233

3234

3235

3236

SELECT a FROM t1 GROUP BY a

3237

HAVING IFNULL((SELECT b FROM t2 WHERE b > 1),

3238

(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3;

3239

ERROR 21000: Subquery returns more than 1 row

3240

SELECT a FROM t1 GROUP BY a

3241

HAVING IFNULL((SELECT b FROM t2 WHERE b > 4),

3242

(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3;

3243

3244

3245

SELECT a FROM t1 GROUP BY a

3246

HAVING IFNULL((SELECT b FROM t2 WHERE b > 4),

3247

(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)) > 3;

3248

ERROR 21000: Subquery returns more than 1 row

3249

SELECT a FROM t1

3250

ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 2),

3251

(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b));

3252

3253

3254

3255

3256

3257

SELECT a FROM t1

3258

ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 1),

3259

(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b));

3260

ERROR 21000: Subquery returns more than 1 row

3261

SELECT a FROM t1

3262

ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 4),

3263

(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b));

3264

3265

3266

3267

3268

3269

SELECT a FROM t1

3270

ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 4),

3271

(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b));

3272

ERROR 21000: Subquery returns more than 1 row

3273

DROP TABLE t1,t2;

3274

create table t1 (df decimal(5,1));

3275

insert into t1 values(1.1);

3276

insert into t1 values(2.2);

3277

select * from t1 where df <= all (select avg(df) from t1 group by df);

3278

3279

1.1

3280

select * from t1 where df >= all (select avg(df) from t1 group by df);

3281

3282

2.2

3283

drop table t1;

3284

create table t1 (df decimal(5,1));

3285

insert into t1 values(1.1);

3286

select 1.1 * exists(select * from t1);

3287

1.1 * exists(select * from t1)

3288

1.1

3289

drop table t1;

3290

CREATE TABLE t1 (

3291

grp int(11) default NULL,

3292

a decimal(10,2) default NULL);

3293

insert into t1 values (1, 1), (2, 2), (2, 3), (3, 4), (3, 5), (3, 6), (NULL, NULL);

3294

select * from t1;

3295

grp a

3296

1 1.00

3297

2 2.00

3298

2 3.00

3299

3 4.00

3300

3 5.00

3301

3 6.00

3302

NULL NULL

3303

select min(a) from t1 group by grp;

3304

min(a)

3305

NULL

3306

1.00

3307

2.00

3308

4.00

3309

drop table t1;

3310

CREATE table t1 ( c1 integer );

3311

INSERT INTO t1 VALUES ( 1 );

3312

INSERT INTO t1 VALUES ( 2 );

3313

INSERT INTO t1 VALUES ( 3 );

3314

CREATE TABLE t2 ( c2 integer );

3315

INSERT INTO t2 VALUES ( 1 );

3316

INSERT INTO t2 VALUES ( 4 );

3317

INSERT INTO t2 VALUES ( 5 );

3318

SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2 WHERE c2 IN (1);

3319

c1 c2

3320

1 1

3321

SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2

3322

WHERE c2 IN ( SELECT c2 FROM t2 WHERE c2 IN ( 1 ) );

3323

c1 c2

3324

1 1

3325

DROP TABLE t1,t2;

3326

CREATE TABLE t1 ( c1 integer );

3327

INSERT INTO t1 VALUES ( 1 );

3328

INSERT INTO t1 VALUES ( 2 );

3329

INSERT INTO t1 VALUES ( 3 );

3330

INSERT INTO t1 VALUES ( 6 );

3331

CREATE TABLE t2 ( c2 integer );

3332

INSERT INTO t2 VALUES ( 1 );

3333

INSERT INTO t2 VALUES ( 4 );

3334

INSERT INTO t2 VALUES ( 5 );

3335

INSERT INTO t2 VALUES ( 6 );

3336

CREATE TABLE t3 ( c3 integer );

3337

INSERT INTO t3 VALUES ( 7 );

3338

INSERT INTO t3 VALUES ( 8 );

3339

SELECT c1,c2 FROM t1 LEFT JOIN t2 ON c1 = c2

3340

WHERE EXISTS (SELECT c3 FROM t3 WHERE c2 IS NULL );

3341

c1 c2

3342

2 NULL

3343

3 NULL

3344

DROP TABLE t1,t2,t3;

3345

CREATE TABLE `t1` (

3346

`itemid` bigint(20) unsigned NOT NULL auto_increment,

3347

`sessionid` bigint(20) unsigned default NULL,

3348

`time` int(10) unsigned NOT NULL default '0',

3349

`type` set('A','D','E','F','G','I','L','N','U') collate latin1_general_ci NOT

3350

NULL default '',

3351

`data` text collate latin1_general_ci NOT NULL,

3352

PRIMARY KEY (`itemid`)

3353

) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;

3354

INSERT INTO `t1` VALUES (1, 1, 1, 'D', '');

3355

CREATE TABLE `t2` (

3356

`sessionid` bigint(20) unsigned NOT NULL auto_increment,

3357

`pid` int(10) unsigned NOT NULL default '0',

3358

`date` int(10) unsigned NOT NULL default '0',

3359

`ip` varchar(15) collate latin1_general_ci NOT NULL default '',

3360

PRIMARY KEY (`sessionid`)

3361

) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;

3362

INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1');

3363

3364

ip count( e.itemid )

3365

10.10.10.1 1

3366

drop tables t1,t2;

3367

CREATE TABLE t1 (EMPNUM CHAR(3));

3368

CREATE TABLE t2 (EMPNUM CHAR(3) );

3369

INSERT INTO t1 VALUES ('E1'),('E2');

3370

INSERT INTO t2 VALUES ('E1');

3371

DELETE FROM t1

3372

WHERE t1.EMPNUM NOT IN

3373

(SELECT t2.EMPNUM

3374

FROM t2

3375

WHERE t1.EMPNUM = t2.EMPNUM);

3376

select * from t1;

3377

EMPNUM

3378

3379

DROP TABLE t1,t2;

3380

CREATE TABLE t1(select_id BIGINT, values_id BIGINT);

3381

INSERT INTO t1 VALUES (1, 1);

3382

CREATE TABLE t2 (select_id BIGINT, values_id BIGINT,

3383

PRIMARY KEY(select_id,values_id));

3384

INSERT INTO t2 VALUES (0, 1), (0, 2), (0, 3), (1, 5);

3385

SELECT values_id FROM t1

3386

WHERE values_id IN (SELECT values_id FROM t2

3387

WHERE select_id IN (1, 0));

3388

values_id

3389

3390

SELECT values_id FROM t1

3391

WHERE values_id IN (SELECT values_id FROM t2

3392

WHERE select_id BETWEEN 0 AND 1);

3393

values_id

3394

3395

SELECT values_id FROM t1

3396

WHERE values_id IN (SELECT values_id FROM t2

3397

WHERE select_id = 0 OR select_id = 1);

3398

values_id

3399

3400

DROP TABLE t1, t2;

3401

create table t1 (fld enum('0','1'));

3402

insert into t1 values ('1');

3403

select * from (select max(fld) from t1) as foo;

3404

max(fld)

3405

3406

drop table t1;

3407

CREATE TABLE t1 (a int, b int);

3408

CREATE TABLE t2 (c int, d int);

3409

CREATE TABLE t3 (e int);

3410

INSERT INTO t1 VALUES

3411

(1,10), (2,10), (1,20), (2,20), (3,20), (2,30), (4,40);

3412

INSERT INTO t2 VALUES

3413

(2,10), (2,20), (4,10), (5,10), (3,20), (2,40);

3414

INSERT INTO t3 VALUES (10), (30), (10), (20) ;

3415

SELECT a, MAX(b), MIN(b) FROM t1 GROUP BY a;

3416

a MAX(b) MIN(b)

3417

1 20 10

3418

2 30 10

3419

3 20 20

3420

4 40 40

3421

SELECT * FROM t2;

3422

c d

3423

2 10

3424

2 20

3425

4 10

3426

5 10

3427

3 20

3428

2 40

3429

SELECT * FROM t3;

3430

3431

3432

3433

3434

3435

SELECT a FROM t1 GROUP BY a

3436

HAVING a IN (SELECT c FROM t2 WHERE MAX(b)>20);

3437

3438

3439

3440

SELECT a FROM t1 GROUP BY a

3441

HAVING a IN (SELECT c FROM t2 WHERE MAX(b)<d);

3442

3443

3444

SELECT a FROM t1 GROUP BY a

3445

HAVING a IN (SELECT c FROM t2 WHERE MAX(b)>d);

3446

3447

3448

3449

SELECT a FROM t1 GROUP BY a

3450

HAVING a IN (SELECT c FROM t2

3451

WHERE d >= SOME(SELECT e FROM t3 WHERE MAX(b)=e));

3452

3453

3454

3455

SELECT a FROM t1 GROUP BY a

3456

HAVING a IN (SELECT c FROM t2

3457

WHERE EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e <= d));

3458

3459

3460

3461

SELECT a FROM t1 GROUP BY a

3462

HAVING a IN (SELECT c FROM t2

3463

WHERE d > SOME(SELECT e FROM t3 WHERE MAX(b)=e));

3464

3465

3466

SELECT a FROM t1 GROUP BY a

3467

HAVING a IN (SELECT c FROM t2

3468

WHERE EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e < d));

3469

3470

3471

SELECT a FROM t1 GROUP BY a

3472

HAVING a IN (SELECT c FROM t2

3473

WHERE MIN(b) < d AND

3474

EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e <= d));

3475

3476

3477

SELECT a, SUM(a) FROM t1 GROUP BY a;

3478

a SUM(a)

3479

1 2

3480

2 6

3481

3 3

3482

4 4

3483

SELECT a FROM t1

3484

WHERE EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) = c) GROUP BY a;

3485

3486

3487

3488

SELECT a FROM t1 GROUP BY a

3489

HAVING EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) = c);

3490

3491

3492

3493

3494

SELECT a FROM t1

3495

WHERE a < 3 AND

3496

EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) != c) GROUP BY a;

3497

3498

3499

3500

SELECT a FROM t1

3501

WHERE a < 3 AND

3502

EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) != c);

3503

3504

3505

3506

3507

3508

3509

SELECT t1.a FROM t1 GROUP BY t1.a

3510

HAVING t1.a < ALL(SELECT t2.c FROM t2 GROUP BY t2.c

3511

HAVING EXISTS(SELECT t3.e FROM t3 GROUP BY t3.e

3512

HAVING SUM(t1.a+t2.c) < t3.e/4));

3513

3514

3515

3516

SELECT t1.a FROM t1 GROUP BY t1.a

3517

HAVING t1.a > ALL(SELECT t2.c FROM t2

3518

WHERE EXISTS(SELECT t3.e FROM t3 GROUP BY t3.e

3519

HAVING SUM(t1.a+t2.c) < t3.e/4));

3520

3521

3522

SELECT t1.a FROM t1 GROUP BY t1.a

3523

HAVING t1.a > ALL(SELECT t2.c FROM t2

3524

WHERE EXISTS(SELECT t3.e FROM t3

3525

WHERE SUM(t1.a+t2.c) < t3.e/4));

3526

ERROR HY000: Invalid use of group function

3527

SELECT t1.a from t1 GROUP BY t1.a HAVING AVG(SUM(t1.b)) > 20;

3528

ERROR HY000: Invalid use of group function

3529

SELECT t1.a FROM t1 GROUP BY t1.a

3530

HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c

3531

HAVING AVG(t2.c+SUM(t1.b)) > 20);

3532

3533

3534

3535

3536

SELECT t1.a FROM t1 GROUP BY t1.a

3537

HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c

3538

HAVING AVG(SUM(t1.b)) > 20);

3539

3540

3541

3542

SELECT t1.a, SUM(b) AS sum FROM t1 GROUP BY t1.a

3543

HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c

3544

HAVING t2.c+sum > 20);

3545

a sum

3546

2 60

3547

3 20

3548

4 40

3549

DROP TABLE t1,t2,t3;

3550

CREATE TABLE t1 (a varchar(5), b varchar(10));

3551

INSERT INTO t1 VALUES

3552

('AAA', 5), ('BBB', 4), ('BBB', 1), ('CCC', 2),

3553

('CCC', 7), ('AAA', 2), ('AAA', 4), ('BBB', 3), ('AAA', 8);

3554

SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);

3555

a b

3556

BBB 4

3557

CCC 7

3558

AAA 8

3559

EXPLAIN

3560

SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);

3561

id select_type table type possible_keys key key_len ref rows Extra

3562

1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where

3563

1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 21 test.t1.a,test.t1.b 1

3564

2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary

3565

ALTER TABLE t1 ADD INDEX(a);

3566

SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);

3567

a b

3568

BBB 4

3569

CCC 7

3570

AAA 8

3571

EXPLAIN

3572

SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);

3573

id select_type table type possible_keys key key_len ref rows Extra

3574

1 PRIMARY t1 ALL a NULL NULL NULL 9 Using where

3575

1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 21 test.t1.a,test.t1.b 1

3576

2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary

3577

DROP TABLE t1;

3578

create table t1( f1 int,f2 int);

3579

insert into t1 values (1,1),(2,2);

3580

select tt.t from (select 'crash1' as t, f2 from t1) as tt left join t1 on tt.t = 'crash2' and tt.f2 = t1.f2 where tt.t = 'crash1';

3581

3582

crash1

3583

crash1

3584

drop table t1;

3585

create table t1 (c int, key(c));

3586

insert into t1 values (1142477582), (1142455969);

3587

create table t2 (a int, b int);

3588

insert into t2 values (2, 1), (1, 0);

3589

delete from t1 where c <= 1140006215 and (select b from t2 where a = 2) = 1;

3590

drop table t1, t2;

3591

CREATE TABLE t1 (a INT);

3592

CREATE VIEW v1 AS SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1);

3593

ERROR 42S22: Unknown column 'no_such_column' in 'where clause'

3594

CREATE VIEW v2 AS SELECT * FROM t1 WHERE no_such_column = (SELECT 1);

3595

ERROR 42S22: Unknown column 'no_such_column' in 'where clause'

3596

SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1);

3597

ERROR 42S22: Unknown column 'no_such_column' in 'IN/ALL/ANY subquery'

3598

DROP TABLE t1;

3599

create table t1 (i int, j bigint);

3600

insert into t1 values (1, 2), (2, 2), (3, 2);

3601

select * from (select min(i) from t1 where j=(select * from (select min(j) from t1) t2)) t3;

3602

min(i)

3603

3604

drop table t1;

3605

CREATE TABLE t1 (i BIGINT UNSIGNED);

3606

INSERT INTO t1 VALUES (10000000000000000000);

3607

INSERT INTO t1 VALUES (1);

3608

CREATE TABLE t2 (i BIGINT UNSIGNED);

3609

INSERT INTO t2 VALUES (10000000000000000000);

3610

INSERT INTO t2 VALUES (1);

3611

/* simple test */

3612

SELECT t1.i FROM t1 JOIN t2 ON t1.i = t2.i;

3613

3614

10000000000000000000

3615

3616

/* subquery test */

3617

SELECT t1.i FROM t1 WHERE t1.i = (SELECT MAX(i) FROM t2);

3618

3619

10000000000000000000

3620

/* subquery test with cast*/

3621

SELECT t1.i FROM t1 WHERE t1.i = CAST((SELECT MAX(i) FROM t2) AS UNSIGNED);

3622

3623

10000000000000000000

3624

DROP TABLE t1;

3625

DROP TABLE t2;

3626

CREATE TABLE t1 (

3627

id bigint(20) unsigned NOT NULL auto_increment,

3628

name varchar(255) NOT NULL,

3629

PRIMARY KEY (id)

3630

);

3631

INSERT INTO t1 VALUES

3632

(1, 'Balazs'), (2, 'Joe'), (3, 'Frank');

3633

CREATE TABLE t2 (

3634

id bigint(20) unsigned NOT NULL auto_increment,

3635

mid bigint(20) unsigned NOT NULL,

3636

date date NOT NULL,

3637

PRIMARY KEY (id)

3638

);

3639

INSERT INTO t2 VALUES

3640

(1, 1, '2006-03-30'), (2, 2, '2006-04-06'), (3, 3, '2006-04-13'),

3641

(4, 2, '2006-04-20'), (5, 1, '2006-05-01');

3642

SELECT *,

3643

(SELECT date FROM t2 WHERE mid = t1.id

3644

ORDER BY date DESC LIMIT 0, 1) AS date_last,

3645

(SELECT date FROM t2 WHERE mid = t1.id

3646

ORDER BY date DESC LIMIT 3, 1) AS date_next_to_last

3647

FROM t1;

3648

id name date_last date_next_to_last

3649

1 Balazs 2006-05-01 NULL

3650

2 Joe 2006-04-20 NULL

3651

3 Frank 2006-04-13 NULL

3652

SELECT *,

3653

(SELECT COUNT(*) FROM t2 WHERE mid = t1.id

3654

ORDER BY date DESC LIMIT 1, 1) AS date_count

3655

FROM t1;

3656

id name date_count

3657

1 Balazs NULL

3658

2 Joe NULL

3659

3 Frank NULL

3660

SELECT *,

3661

(SELECT date FROM t2 WHERE mid = t1.id

3662

ORDER BY date DESC LIMIT 0, 1) AS date_last,

3663

(SELECT date FROM t2 WHERE mid = t1.id

3664

ORDER BY date DESC LIMIT 1, 1) AS date_next_to_last

3665

FROM t1;

3666

id name date_last date_next_to_last

3667

1 Balazs 2006-05-01 2006-03-30

3668

2 Joe 2006-04-20 2006-04-06

3669

3 Frank 2006-04-13 NULL

3670

DROP TABLE t1,t2;

3671

CREATE TABLE t1 (

3672

i1 int(11) NOT NULL default '0',

3673

i2 int(11) NOT NULL default '0',

3674

t datetime NOT NULL default '0000-00-00 00:00:00',

3675

PRIMARY KEY (i1,i2,t)

3676

);

3677

INSERT INTO t1 VALUES

3678

(24,1,'2005-03-03 16:31:31'),(24,1,'2005-05-27 12:40:07'),

3679

(24,1,'2005-05-27 12:40:08'),(24,1,'2005-05-27 12:40:10'),

3680

(24,1,'2005-05-27 12:40:25'),(24,1,'2005-05-27 12:40:30'),

3681

(24,2,'2005-03-03 13:43:05'),(24,2,'2005-03-03 16:23:31'),

3682

(24,2,'2005-03-03 16:31:30'),(24,2,'2005-05-27 12:37:02'),

3683

(24,2,'2005-05-27 12:40:06');

3684

CREATE TABLE t2 (

3685

i1 int(11) NOT NULL default '0',

3686

i2 int(11) NOT NULL default '0',

3687

t datetime default NULL,

3688

PRIMARY KEY (i1)

3689

);

3690

INSERT INTO t2 VALUES (24,1,'2006-06-20 12:29:40');

3691

EXPLAIN

3692

SELECT * FROM t1,t2

3693

WHERE t1.t = (SELECT t1.t FROM t1

3694

WHERE t1.t < t2.t AND t1.i2=1 AND t2.i1=t1.i1

3695

ORDER BY t1.t DESC LIMIT 1);

3696

id select_type table type possible_keys key key_len ref rows Extra

3697

1 PRIMARY t2 system NULL NULL NULL NULL 1

3698

1 PRIMARY t1 index NULL PRIMARY 16 NULL 11 Using where; Using index

3699

2 SUBQUERY t1 range PRIMARY PRIMARY 16 NULL 5 Using where; Using index

3700

SELECT * FROM t1,t2

3701

WHERE t1.t = (SELECT t1.t FROM t1

3702

WHERE t1.t < t2.t AND t1.i2=1 AND t2.i1=t1.i1

3703

ORDER BY t1.t DESC LIMIT 1);

3704

i1 i2 t i1 i2 t

3705

24 1 2005-05-27 12:40:30 24 1 2006-06-20 12:29:40

3706

DROP TABLE t1, t2;

3707

CREATE TABLE t1 (i INT);

3708

(SELECT i FROM t1) UNION (SELECT i FROM t1);

3709

3710

SELECT sql_no_cache * FROM t1 WHERE NOT EXISTS

3711

(

3712

(SELECT i FROM t1) UNION

3713

(SELECT i FROM t1)

3714

);

3715

3716

SELECT * FROM t1

3717

WHERE NOT EXISTS (((SELECT i FROM t1) UNION (SELECT i FROM t1)));

3718

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION (SELECT i FROM t1)))' at line 2

3719

explain select ((select t11.i from t1 t11) union (select t12.i from t1 t12))

3720

from t1;

3721

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'union (select t12.i from t1 t12))

3722

from t1' at line 1

3723

explain select * from t1 where not exists

3724

((select t11.i from t1 t11) union (select t12.i from t1 t12));

3725

id select_type table type possible_keys key key_len ref rows Extra

3726

1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found

3727

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table

3728

3 UNION NULL NULL NULL NULL NULL NULL NULL no matching row in const table

3729

NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL

3730

DROP TABLE t1;

3731

CREATE TABLE t1 (a VARCHAR(250), b INT auto_increment, PRIMARY KEY (b));

3732

insert into t1 (a) values (FLOOR(rand() * 100));

3733

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3734

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3735

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3736

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3737

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3738

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3739

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3740

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3741

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3742

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3743

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3744

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3745

insert into t1 (a) select FLOOR(rand() * 100) from t1;

3746

SELECT a,

3747

(SELECT REPEAT(' ',250) FROM t1 i1

3748

WHERE i1.b=t1.a ORDER BY RAND() LIMIT 1) AS a

3749

FROM t1 ORDER BY a LIMIT 5;

3750

a a

3751

0 NULL

3752

0 NULL

3753

0 NULL

3754

0 NULL

3755

0 NULL

3756

DROP TABLE t1;

3757

CREATE TABLE t1 (a INT, b INT);

3758

CREATE TABLE t2 (a INT);

3759

INSERT INTO t2 values (1);

3760

INSERT INTO t1 VALUES (1,1),(1,2),(2,3),(3,4);

3761

SELECT (SELECT COUNT(DISTINCT t1.b) from t2) FROM t1 GROUP BY t1.a;

3762

(SELECT COUNT(DISTINCT t1.b) from t2)

3763

3764

3765

3766

SELECT (SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3)

3767

FROM t1 GROUP BY t1.a;

3768

(SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3)

3769

3770

3771

3772

SELECT COUNT(DISTINCT t1.b), (SELECT COUNT(DISTINCT t1.b)) FROM t1 GROUP BY t1.a;

3773

COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b))

3774

2 2

3775

1 1

3776

1 1

3777

SELECT COUNT(DISTINCT t1.b),

3778

(SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3)

3779

FROM t1 GROUP BY t1.a;

3780

COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3)

3781

2 2

3782

1 1

3783

1 1

3784

SELECT (

3785

SELECT (

3786

SELECT COUNT(DISTINCT t1.b)

3787

)

3788

)

3789

FROM t1 GROUP BY t1.a;

3790

(

3791

SELECT (

3792

SELECT COUNT(DISTINCT t1.b)

3793

)

3794

)

3795

3796

3797

3798

SELECT (

3799

SELECT (

3800

SELECT (

3801

SELECT COUNT(DISTINCT t1.b)

3802

)

3803

)

3804

FROM t1 GROUP BY t1.a LIMIT 1)

3805

FROM t1 t2

3806

GROUP BY t2.a;

3807

(

3808

SELECT (

3809

SELECT (

3810

SELECT COUNT(DISTINCT t1.b)

3811

)

3812

)

3813

FROM t1 GROUP BY t1.a LIMIT 1)

3814

3815

3816

3817

DROP TABLE t1,t2;

3818

CREATE TABLE t1 (a int, b int, PRIMARY KEY (b));

3819

CREATE TABLE t2 (x int auto_increment, y int, z int,

3820

PRIMARY KEY (x), FOREIGN KEY (y) REFERENCES t1 (b));

3821

create table t3 (a int);

3822

insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

3823

insert into t1 select RAND()*1000, A.a + 10*(B.a+10*(C.a+10*D.a))

3824

from t3 A, t3 B, t3 C, t3 D where D.a<3;

3825

insert into t2(y,z) select t1.b, RAND()*1000 from t1, t3;

3826

SET SESSION sort_buffer_size = 32 * 1024;

3827

SELECT SQL_NO_CACHE COUNT(*)

3828

FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c

3829

FROM t1) t;

3830

COUNT(*)

3831

3000

3832

SET SESSION sort_buffer_size = 8 * 1024 * 1024;

3833

SELECT SQL_NO_CACHE COUNT(*)

3834

FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c

3835

FROM t1) t;

3836

COUNT(*)

3837

3000

3838

DROP TABLE t1,t2,t3;

3839

CREATE TABLE t1 (id char(4) PRIMARY KEY, c int);

3840

CREATE TABLE t2 (c int);

3841

INSERT INTO t1 VALUES ('aa', 1);

3842

INSERT INTO t2 VALUES (1);

3843

SELECT * FROM t1

3844

WHERE EXISTS (SELECT c FROM t2 WHERE c=1

3845

UNION

3846

SELECT c from t2 WHERE c=t1.c);

3847

id c

3848

aa 1

3849

INSERT INTO t1 VALUES ('bb', 2), ('cc', 3), ('dd',1);

3850

SELECT * FROM t1

3851

WHERE EXISTS (SELECT c FROM t2 WHERE c=1

3852

UNION

3853

SELECT c from t2 WHERE c=t1.c);

3854

id c

3855

aa 1

3856

bb 2

3857

cc 3

3858

dd 1

3859

INSERT INTO t2 VALUES (2);

3860

CREATE TABLE t3 (c int);

3861

INSERT INTO t3 VALUES (1);

3862

SELECT * FROM t1

3863

WHERE EXISTS (SELECT t2.c FROM t2 JOIN t3 ON t2.c=t3.c WHERE t2.c=1

3864

UNION

3865

SELECT c from t2 WHERE c=t1.c);

3866

id c

3867

aa 1

3868

bb 2

3869

cc 3

3870

dd 1

3871

DROP TABLE t1,t2,t3;

3872

CREATE TABLE t1(f1 int);

3873

CREATE TABLE t2(f2 int, f21 int, f3 timestamp);

3874

INSERT INTO t1 VALUES (1),(1),(2),(2);

3875

INSERT INTO t2 VALUES (1,1,"2004-02-29 11:11:11"), (2,2,"2004-02-29 11:11:11");

3876

SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1;

3877

3878

3879

3880

SELECT (SELECT SUM(1) FROM t2 ttt GROUP BY t2.f3 LIMIT 1) AS tt FROM t2;

3881

3882

3883

3884

PREPARE stmt1 FROM 'SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1';

3885

EXECUTE stmt1;

3886

3887

3888

3889

EXECUTE stmt1;

3890

3891

3892

3893

DEALLOCATE PREPARE stmt1;

3894

SELECT f2, AVG(f21),

3895

(SELECT t.f3 FROM t2 AS t WHERE t2.f2=t.f2 AND t.f3=MAX(t2.f3)) AS test

3896

FROM t2 GROUP BY f2;

3897

f2 AVG(f21) test

3898

1 1.0000 2004-02-29 11:11:11

3899

2 2.0000 2004-02-29 11:11:11

3900

DROP TABLE t1,t2;

3901

CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL);

3902

INSERT INTO t1 VALUES

3903

(1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'),

3904

(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'), (3,3,'j'),

3905

(3,2,'k'), (3,1,'l'), (1,9,'m');

3906

SELECT a, MAX(b),

3907

(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)) AS test

3908

FROM t1 GROUP BY a;

3909

a MAX(b) test

3910

1 9 m

3911

2 3 h

3912

3 4 i

3913

DROP TABLE t1;

3914

DROP TABLE IF EXISTS t1;

3915

DROP TABLE IF EXISTS t2;

3916

DROP TABLE IF EXISTS t1xt2;

3917

CREATE TABLE t1 (

3918

id_1 int(5) NOT NULL,

3919

t varchar(4) DEFAULT NULL

3920

);

3921

CREATE TABLE t2 (

3922

id_2 int(5) NOT NULL,

3923

t varchar(4) DEFAULT NULL

3924

);

3925

CREATE TABLE t1xt2 (

3926

id_1 int(5) NOT NULL,

3927

id_2 int(5) NOT NULL

3928

);

3929

INSERT INTO t1 VALUES (1, 'a'), (2, 'b'), (3, 'c'), (4, 'd');

3930

INSERT INTO t2 VALUES (2, 'bb'), (3, 'cc'), (4, 'dd'), (12, 'aa');

3931

INSERT INTO t1xt2 VALUES (2, 2), (3, 3), (4, 4);

3932

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3933

(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1));

3934

id_1

3935

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3936

(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)));

3937

id_1

3938

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3939

(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))));

3940

id_1

3941

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3942

(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1));

3943

id_1

3944

3945

3946

3947

3948

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3949

(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 where t1.id_1 = t1xt2.id_1)));

3950

id_1

3951

3952

3953

3954

3955

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3956

(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 where t1.id_1 = t1xt2.id_1))));

3957

id_1

3958

3959

3960

3961

3962

insert INTO t1xt2 VALUES (1, 12);

3963

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3964

(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1));

3965

id_1

3966

3967

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3968

(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)));

3969

id_1

3970

3971

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3972

(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))));

3973

id_1

3974

3975

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3976

(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1));

3977

id_1

3978

3979

3980

3981

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3982

(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)));

3983

id_1

3984

3985

3986

3987

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3988

(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))));

3989

id_1

3990

3991

3992

3993

insert INTO t1xt2 VALUES (2, 12);

3994

SELECT DISTINCT t1.id_1 FROM t1 WHERE

3995

(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1));

3996

id_1

3997

3998

3999

SELECT DISTINCT t1.id_1 FROM t1 WHERE

4000

(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)));

4001

id_1

4002

4003

4004

SELECT DISTINCT t1.id_1 FROM t1 WHERE

4005

(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))));

4006

id_1

4007

4008

4009

SELECT DISTINCT t1.id_1 FROM t1 WHERE

4010

(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1));

4011

id_1

4012

4013

4014

SELECT DISTINCT t1.id_1 FROM t1 WHERE

4015

(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)));

4016

id_1

4017

4018

4019

SELECT DISTINCT t1.id_1 FROM t1 WHERE

4020

(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))));

4021

id_1

4022

4023

4024

DROP TABLE t1;

4025

DROP TABLE t2;

4026

DROP TABLE t1xt2;

4027

CREATE TABLE t1 (a int);

4028

INSERT INTO t1 VALUES (3), (1), (2);

4029

SELECT 'this is ' 'a test.' AS col1, a AS col2 FROM t1;

4030

col1 col2

4031

this is a test. 3

4032

this is a test. 1

4033

this is a test. 2

4034

SELECT * FROM (SELECT 'this is ' 'a test.' AS col1, a AS t2 FROM t1) t;

4035

col1 t2

4036

this is a test. 3

4037

this is a test. 1

4038

this is a test. 2

4039

DROP table t1;

4040

CREATE TABLE t1 (a int, b int);

4041

CREATE TABLE t2 (m int, n int);

4042

INSERT INTO t1 VALUES (2,2), (2,2), (3,3), (3,3), (3,3), (4,4);

4043

INSERT INTO t2 VALUES (1,11), (2,22), (3,32), (4,44), (4,44);

4044

SELECT COUNT(*), a,

4045

(SELECT m FROM t2 WHERE m = count(*) LIMIT 1)

4046

FROM t1 GROUP BY a;

4047

COUNT(*) a (SELECT m FROM t2 WHERE m = count(*) LIMIT 1)

4048

2 2 2

4049

3 3 3

4050

1 4 1

4051

SELECT COUNT(*), a,

4052

(SELECT MIN(m) FROM t2 WHERE m = count(*))

4053

FROM t1 GROUP BY a;

4054

COUNT(*) a (SELECT MIN(m) FROM t2 WHERE m = count(*))

4055

2 2 2

4056

3 3 3

4057

1 4 1

4058

SELECT COUNT(*), a

4059

FROM t1 GROUP BY a

4060

HAVING (SELECT MIN(m) FROM t2 WHERE m = count(*)) > 1;

4061

COUNT(*) a

4062

2 2

4063

3 3

4064

DROP TABLE t1,t2;

4065

CREATE TABLE t1 (a int, b int);

4066

CREATE TABLE t2 (m int, n int);

4067

INSERT INTO t1 VALUES (2,2), (2,2), (3,3), (3,3), (3,3), (4,4);

4068

INSERT INTO t2 VALUES (1,11), (2,22), (3,32), (4,44), (4,44);

4069

SELECT COUNT(*) c, a,

4070

(SELECT GROUP_CONCAT(COUNT(a)) FROM t2 WHERE m = a)

4071

FROM t1 GROUP BY a;

4072

c a (SELECT GROUP_CONCAT(COUNT(a)) FROM t2 WHERE m = a)

4073

2 2 2

4074

3 3 3

4075

1 4 1,1

4076

SELECT COUNT(*) c, a,

4077

(SELECT GROUP_CONCAT(COUNT(a)+1) FROM t2 WHERE m = a)

4078

FROM t1 GROUP BY a;

4079

c a (SELECT GROUP_CONCAT(COUNT(a)+1) FROM t2 WHERE m = a)

4080

2 2 3

4081

3 3 4

4082

1 4 2,2

4083

DROP table t1,t2;

4084

CREATE TABLE t1 (a int, b INT, d INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));

4085

INSERT INTO t1 VALUES (1,1,0,'a'), (1,2,0,'b'), (1,3,0,'c'), (1,4,0,'d'),

4086

(1,5,0,'e'), (2,1,0,'f'), (2,2,0,'g'), (2,3,0,'h'), (3,4,0,'i'), (3,3,0,'j'),

4087

(3,2,0,'k'), (3,1,0,'l'), (1,9,0,'m'), (1,0,10,'n'), (2,0,5,'o'), (3,0,7,'p');

4088

SELECT a, MAX(b),

4089

(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b + 0)) as test

4090

FROM t1 GROUP BY a;

4091

a MAX(b) test

4092

1 9 m

4093

2 3 h

4094

3 4 i

4095

SELECT a x, MAX(b),

4096

(SELECT t.c FROM t1 AS t WHERE x=t.a AND t.b=MAX(t1.b + 0)) as test

4097

FROM t1 GROUP BY a;

4098

x MAX(b) test

4099

1 9 m

4100

2 3 h

4101

3 4 i

4102

SELECT a, AVG(b),

4103

(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=AVG(t1.b)) AS test

4104

FROM t1 WHERE t1.d=0 GROUP BY a;

4105

a AVG(b) test

4106

1 4.0000 d

4107

2 2.0000 g

4108

3 2.5000 NULL

4109

SELECT tt.a,

4110

(SELECT (SELECT c FROM t1 as t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a)

4111

LIMIT 1) FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1) as test

4112

FROM t1 as tt;

4113

a test

4114

1 n

4115

1 n

4116

1 n

4117

1 n

4118

1 n

4119

1 n

4120

1 n

4121

2 o

4122

2 o

4123

2 o

4124

2 o

4125

3 p

4126

3 p

4127

3 p

4128

3 p

4129

3 p

4130

SELECT tt.a,

4131

(SELECT (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a)

4132

LIMIT 1)

4133

FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1) as test

4134

FROM t1 as tt GROUP BY tt.a;

4135

a test

4136

1 n

4137

2 o

4138

3 p

4139

SELECT tt.a, MAX(

4140

(SELECT (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a)

4141

LIMIT 1)

4142

FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1)) as test

4143

FROM t1 as tt GROUP BY tt.a;

4144

a test

4145

1 n

4146

2 o

4147

3 p

4148

DROP TABLE t1;

4149

CREATE TABLE t1 (a int, b int);

4150

INSERT INTO t1 VALUES (2,22),(1,11),(2,22);

4151

SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a;

4152

4153

4154

4155

SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a;

4156

4157

SELECT a FROM t1 t0

4158

WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a;

4159

4160

4161

4162

SET @@sql_mode='ansi';

4163

SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a;

4164

ERROR HY000: Invalid use of group function

4165

SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a;

4166

ERROR HY000: Invalid use of group function

4167

SELECT a FROM t1 t0

4168

WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a;

4169

ERROR HY000: Invalid use of group function

4170

SET @@sql_mode=default;

4171

DROP TABLE t1;

4172

CREATE TABLE t1 (a INT);

4173

INSERT INTO t1 values (1),(1),(1),(1);

4174

CREATE TABLE t2 (x INT);

4175

INSERT INTO t1 values (1000),(1001),(1002);

4176

SELECT SUM( (SELECT COUNT(a) FROM t2) ) FROM t1;

4177

ERROR HY000: Invalid use of group function

4178

SELECT SUM( (SELECT SUM(COUNT(a)) FROM t2) ) FROM t1;

4179

ERROR HY000: Invalid use of group function

4180

SELECT COUNT(1) FROM DUAL;

4181

COUNT(1)

4182

4183

SELECT SUM( (SELECT AVG( (SELECT t1.a FROM t2) ) FROM DUAL) ) FROM t1;

4184

ERROR HY000: Invalid use of group function

4185

SELECT

4186

SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING t1.a < 12) ) FROM t2) )

4187

FROM t1;

4188

ERROR HY000: Invalid use of group function

4189

SELECT t1.a as XXA,

4190

SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING XXA < 12) ) FROM t2) )

4191

FROM t1;

4192

ERROR HY000: Invalid use of group function

4193

DROP TABLE t1,t2;

4194

CREATE TABLE t1 (a int, b int, KEY (a));

4195

INSERT INTO t1 VALUES (1,1),(2,1);

4196

EXPLAIN SELECT 1 FROM t1 WHERE a = (SELECT COUNT(*) FROM t1 GROUP BY b);

4197

id select_type table type possible_keys key key_len ref rows Extra

4198

1 PRIMARY t1 ref a a 5 const 1 Using where; Using index

4199

2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort

4200

DROP TABLE t1;

4201

CREATE TABLE t1 (id int NOT NULL, st CHAR(2), INDEX idx(id));

4202

INSERT INTO t1 VALUES

4203

(3,'FL'), (2,'GA'), (4,'FL'), (1,'GA'), (5,'NY'), (7,'FL'), (6,'NY');

4204

CREATE TABLE t2 (id int NOT NULL, INDEX idx(id));

4205

INSERT INTO t2 VALUES (7), (5), (1), (3);

4206

SELECT id, st FROM t1

4207

WHERE st IN ('GA','FL') AND EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id);

4208

id st

4209

3 FL

4210

1 GA

4211

7 FL

4212

SELECT id, st FROM t1

4213

WHERE st IN ('GA','FL') AND EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id)

4214

GROUP BY id;

4215

id st

4216

1 GA

4217

3 FL

4218

7 FL

4219

SELECT id, st FROM t1

4220

WHERE st IN ('GA','FL') AND NOT EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id);

4221

id st

4222

2 GA

4223

4 FL

4224

SELECT id, st FROM t1

4225

WHERE st IN ('GA','FL') AND NOT EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id)

4226

GROUP BY id;

4227

id st

4228

2 GA

4229

4 FL

4230

DROP TABLE t1,t2;

4231

CREATE TABLE t1 (a int);

4232

INSERT INTO t1 VALUES (1), (2);

4233

EXPLAIN EXTENDED

4234

SELECT * FROM (SELECT count(*) FROM t1 GROUP BY a) as res;

4235

id select_type table type possible_keys key key_len ref rows filtered Extra

4236

1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00

4237

2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort

4238

Warnings:

4239

Note 1003 select `res`.`count(*)` AS `count(*)` from (select count(0) AS `count(*)` from `test`.`t1` group by `test`.`t1`.`a`) `res`

4240

DROP TABLE t1;

4241

CREATE TABLE t1 (

4242

a varchar(255) default NULL,

4243

b timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,

4244

INDEX idx(a,b)

4245

);

4246

CREATE TABLE t2 (

4247

a varchar(255) default NULL

4248

);

4249

INSERT INTO t1 VALUES ('abcdefghijk','2007-05-07 06:00:24');

4250

INSERT INTO t1 SELECT * FROM t1;

4251

INSERT INTO t1 SELECT * FROM t1;

4252

INSERT INTO t1 SELECT * FROM t1;

4253

INSERT INTO t1 SELECT * FROM t1;

4254

INSERT INTO t1 SELECT * FROM t1;

4255

INSERT INTO t1 SELECT * FROM t1;

4256

INSERT INTO t1 SELECT * FROM t1;

4257

INSERT INTO t1 SELECT * FROM t1;

4258

INSERT INTO `t1` VALUES ('asdf','2007-02-08 01:11:26');

4259

INSERT INTO `t2` VALUES ('abcdefghijk');

4260

INSERT INTO `t2` VALUES ('asdf');

4261

SET session sort_buffer_size=8192;

4262

SELECT (SELECT 1 FROM t1 WHERE t1.a=t2.a ORDER BY t1.b LIMIT 1) AS d1 FROM t2;

4263

4264

4265

4266

DROP TABLE t1,t2;

4267

CREATE TABLE t1 (a INTEGER, b INTEGER);

4268

CREATE TABLE t2 (x INTEGER);

4269

INSERT INTO t1 VALUES (1,11), (2,22), (2,22);

4270

INSERT INTO t2 VALUES (1), (2);

4271

SELECT a, COUNT(b), (SELECT COUNT(b) FROM t2) FROM t1 GROUP BY a;

4272

ERROR 21000: Subquery returns more than 1 row

4273

SELECT a, COUNT(b), (SELECT COUNT(b)+0 FROM t2) FROM t1 GROUP BY a;

4274

ERROR 21000: Subquery returns more than 1 row

4275

SELECT (SELECT SUM(t1.a)/AVG(t2.x) FROM t2) FROM t1;

4276

(SELECT SUM(t1.a)/AVG(t2.x) FROM t2)

4277

3.3333

4278

DROP TABLE t1,t2;

4279

CREATE TABLE t1 (a INT, b INT);

4280

INSERT INTO t1 VALUES (1, 2), (1,3), (1,4), (2,1), (2,2);

4281

SELECT a1.a, COUNT(*) FROM t1 a1 WHERE a1.a = 1

4282

AND EXISTS( SELECT a2.a FROM t1 a2 WHERE a2.a = a1.a)

4283

GROUP BY a1.a;

4284

a COUNT(*)

4285

1 3

4286

DROP TABLE t1;

4287

CREATE TABLE t1 (a INT);

4288

CREATE TABLE t2 (a INT);

4289

INSERT INTO t1 VALUES (1),(2);

4290

INSERT INTO t2 VALUES (1),(2);

4291

SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=0) FROM t1;

4292

(SELECT SUM(t1.a) FROM t2 WHERE a=0)

4293

NULL

4294

SELECT (SELECT SUM(t1.a) FROM t2 WHERE a!=0) FROM t1;

4295

ERROR 21000: Subquery returns more than 1 row

4296

SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1;

4297

(SELECT SUM(t1.a) FROM t2 WHERE a=1)

4298

4299

DROP TABLE t1,t2;

4300

CREATE TABLE t1 (a1 INT, a2 INT);

4301

CREATE TABLE t2 (b1 INT, b2 INT);

4302

INSERT INTO t1 VALUES (100, 200);

4303

INSERT INTO t1 VALUES (101, 201);

4304

INSERT INTO t2 VALUES (101, 201);

4305

INSERT INTO t2 VALUES (103, 203);

4306

SELECT ((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL FROM t1;

4307

((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL

4308

4309

4310

DROP TABLE t1, t2;

4311

CREATE TABLE t1 (s1 BINARY(5), s2 VARBINARY(5));

4312

INSERT INTO t1 VALUES (0x41,0x41), (0x42,0x42), (0x43,0x43);

4313

SELECT s1, s2 FROM t1 WHERE s2 IN (SELECT s1 FROM t1);

4314

s1 s2

4315

SELECT s1, s2 FROM t1 WHERE (s2, 10) IN (SELECT s1, 10 FROM t1);

4316

s1 s2

4317

CREATE INDEX I1 ON t1 (s1);

4318

CREATE INDEX I2 ON t1 (s2);

4319

SELECT s1, s2 FROM t1 WHERE s2 IN (SELECT s1 FROM t1);

4320

s1 s2

4321

SELECT s1, s2 FROM t1 WHERE (s2, 10) IN (SELECT s1, 10 FROM t1);

4322

s1 s2

4323

TRUNCATE t1;

4324

INSERT INTO t1 VALUES (0x41,0x41);

4325

SELECT * FROM t1 WHERE s1 = (SELECT s2 FROM t1);

4326

s1 s2

4327

DROP TABLE t1;

4328

CREATE TABLE t1 (a1 VARBINARY(2) NOT NULL DEFAULT '0', PRIMARY KEY (a1));

4329

CREATE TABLE t2 (a2 BINARY(2) default '0', INDEX (a2));

4330

CREATE TABLE t3 (a3 BINARY(2) default '0');

4331

INSERT INTO t1 VALUES (1),(2),(3),(4);

4332

INSERT INTO t2 VALUES (1),(2),(3);

4333

INSERT INTO t3 VALUES (1),(2),(3);

4334

SELECT LEFT(t2.a2, 1) FROM t2,t3 WHERE t3.a3=t2.a2;

4335

LEFT(t2.a2, 1)

4336

4337

4338

4339

SELECT t1.a1, t1.a1 in (SELECT t2.a2 FROM t2,t3 WHERE t3.a3=t2.a2) FROM t1;

4340

a1 t1.a1 in (SELECT t2.a2 FROM t2,t3 WHERE t3.a3=t2.a2)

4341

1 0

4342

2 0

4343

3 0

4344

4 0

4345

DROP TABLE t1,t2,t3;

4346

CREATE TABLE t1 (a1 BINARY(3) PRIMARY KEY, b1 VARBINARY(3));

4347

CREATE TABLE t2 (a2 VARBINARY(3) PRIMARY KEY);

4348

CREATE TABLE t3 (a3 VARBINARY(3) PRIMARY KEY);

4349

INSERT INTO t1 VALUES (1,10), (2,20), (3,30), (4,40);

4350

INSERT INTO t2 VALUES (2), (3), (4), (5);

4351

INSERT INTO t3 VALUES (10), (20), (30);

4352

SELECT LEFT(t1.a1,1) FROM t1,t3 WHERE t1.b1=t3.a3;

4353

LEFT(t1.a1,1)

4354

4355

4356

4357

SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3);

4358

4359

DROP TABLE t1, t2, t3;

4360

SET @save_optimizer_switch=@@optimizer_switch;

4361

SET optimizer_switch='semijoin_with_cache=off';

4362

SET optimizer_switch='materialization=off';

4363

CREATE TABLE t1 (a CHAR(1), b VARCHAR(10));

4364

INSERT INTO t1 VALUES ('a', 'aa');

4365

INSERT INTO t1 VALUES ('a', 'aaa');

4366

SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1);

4367

a b

4368

CREATE INDEX I1 ON t1 (a);

4369

CREATE INDEX I2 ON t1 (b);

4370

EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1);

4371

id select_type table type possible_keys key key_len ref rows Extra

4372

1 PRIMARY t1 ALL I2 NULL NULL NULL 2 Using where

4373

1 PRIMARY t1 ref I1 I1 2 test.t1.b 2 Using where; Using index; FirstMatch(t1)

4374

SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1);

4375

a b

4376

CREATE TABLE t2 (a VARCHAR(1), b VARCHAR(10));

4377

INSERT INTO t2 SELECT * FROM t1;

4378

CREATE INDEX I1 ON t2 (a);

4379

CREATE INDEX I2 ON t2 (b);

4380

EXPLAIN SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2);

4381

id select_type table type possible_keys key key_len ref rows Extra

4382

1 PRIMARY t2 ALL I2 NULL NULL NULL 2 Using where

4383

1 PRIMARY t2 ref I1 I1 4 test.t2.b 2 Using where; Using index; FirstMatch(t2)

4384

SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2);

4385

a b

4386

EXPLAIN

4387

SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500);

4388

id select_type table type possible_keys key key_len ref rows Extra

4389

1 PRIMARY t1 ALL I2 NULL NULL NULL 2 Using where

4390

1 PRIMARY t1 ref I1 I1 2 test.t1.b 2 Using where; Using index; FirstMatch(t1)

4391

SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500);

4392

a b

4393

DROP TABLE t1,t2;

4394

SET optimizer_switch= @save_optimizer_switch;

4395

CREATE TABLE t1(a INT, b INT);

4396

INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4);

4397

EXPLAIN

4398

SELECT a AS out_a, MIN(b) FROM t1

4399

WHERE b > (SELECT MIN(b) FROM t1 WHERE a = out_a)

4400

GROUP BY a;

4401

ERROR 42S22: Unknown column 'out_a' in 'where clause'

4402

SELECT a AS out_a, MIN(b) FROM t1

4403

WHERE b > (SELECT MIN(b) FROM t1 WHERE a = out_a)

4404

GROUP BY a;

4405

ERROR 42S22: Unknown column 'out_a' in 'where clause'

4406

EXPLAIN

4407

SELECT a AS out_a, MIN(b) FROM t1 t1_outer

4408

WHERE b > (SELECT MIN(b) FROM t1 WHERE a = t1_outer.a)

4409

GROUP BY a;

4410

id select_type table type possible_keys key key_len ref rows Extra

4411

1 PRIMARY t1_outer ALL NULL NULL NULL NULL 4 Using where; Using temporary; Using filesort

4412

2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 4 Using where

4413

SELECT a AS out_a, MIN(b) FROM t1 t1_outer

4414

WHERE b > (SELECT MIN(b) FROM t1 WHERE a = t1_outer.a)

4415

GROUP BY a;

4416

out_a MIN(b)

4417

1 2

4418

2 4

4419

DROP TABLE t1;

4420

CREATE TABLE t1 (a INT);

4421

CREATE TABLE t2 (a INT);

4422

INSERT INTO t1 VALUES (1),(2);

4423

INSERT INTO t2 VALUES (1),(2);

4424

SELECT 2 FROM t1 WHERE EXISTS ((SELECT 1 FROM t2 WHERE t1.a=t2.a));

4425

4426

4427

4428

EXPLAIN EXTENDED

4429

SELECT 2 FROM t1 WHERE EXISTS ((SELECT 1 FROM t2 WHERE t1.a=t2.a));

4430

id select_type table type possible_keys key key_len ref rows filtered Extra

4431

1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where

4432

2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where

4433

Warnings:

4434

Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1

4435

Note 1003 select 2 AS `2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(exists(select 1 from `test`.`t2` where (`test`.`t1`.`a` = `test`.`t2`.`a`)))

4436

EXPLAIN EXTENDED

4437

SELECT 2 FROM t1 WHERE EXISTS ((SELECT 1 FROM t2 WHERE t1.a=t2.a) UNION

4438

(SELECT 1 FROM t2 WHERE t1.a = t2.a));

4439

id select_type table type possible_keys key key_len ref rows filtered Extra

4440

1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where

4441

2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where

4442

3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 2 100.00 Using where

4443

NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL

4444

Warnings:

4445

Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1

4446

Note 1276 Field or reference 'test.t1.a' of SELECT #3 was resolved in SELECT #1

4447

Note 1003 select 2 AS `2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(exists((select 1 from `test`.`t2` where (`test`.`t1`.`a` = `test`.`t2`.`a`)) union (select 1 from `test`.`t2` where (`test`.`t1`.`a` = `test`.`t2`.`a`))))

4448

DROP TABLE t1,t2;

4449

create table t0(a int);

4450

insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

4451

create table t1(f11 int, f12 int);

4452

create table t2(f21 int unsigned not null, f22 int, f23 varchar(10));

4453

insert into t1 values(1,1),(2,2), (3, 3);

4454

insert into t2

4455

select -1 , (@a:=(A.a + 10 * (B.a + 10 * (C.a+10*D.a))))/5000 + 1, @a

4456

from t0 A, t0 B, t0 C, t0 D;

4457

set session sort_buffer_size= 33*1024;

4458

select count(*) from t1 where f12 =

4459

(select f22 from t2 where f22 = f12 order by f21 desc, f22, f23 limit 1);

4460

count(*)

4461

4462

drop table t0,t1,t2;

4463

CREATE TABLE t4 (

4464

f7 varchar(32) collate utf8_bin NOT NULL default '',

4465

f10 varchar(32) collate utf8_bin default NULL,

4466

PRIMARY KEY (f7)

4467

);

4468

INSERT INTO t4 VALUES(1,1), (2,null);

4469

CREATE TABLE t2 (

4470

f4 varchar(32) collate utf8_bin NOT NULL default '',

4471

f2 varchar(50) collate utf8_bin default NULL,

4472

f3 varchar(10) collate utf8_bin default NULL,

4473

PRIMARY KEY (f4),

4474

UNIQUE KEY uk1 (f2)

4475

);

4476

INSERT INTO t2 VALUES(1,1,null), (2,2,null);

4477

CREATE TABLE t1 (

4478

f8 varchar(32) collate utf8_bin NOT NULL default '',

4479

f1 varchar(10) collate utf8_bin default NULL,

4480

f9 varchar(32) collate utf8_bin default NULL,

4481

PRIMARY KEY (f8)

4482

);

4483

INSERT INTO t1 VALUES (1,'P',1), (2,'P',1), (3,'R',2);

4484

CREATE TABLE t3 (

4485

f6 varchar(32) collate utf8_bin NOT NULL default '',

4486

f5 varchar(50) collate utf8_bin default NULL,

4487

PRIMARY KEY (f6)

4488

);

4489

INSERT INTO t3 VALUES (1,null), (2,null);

4490

SELECT

4491

IF(t1.f1 = 'R', a1.f2, t2.f2) AS a4,

4492

IF(t1.f1 = 'R', a1.f3, t2.f3) AS f3,

4493

SUM(

4494

IF(

4495

(SELECT VPC.f2

4496

FROM t2 VPC, t4 a2, t2 a3

4497

WHERE

4498

VPC.f4 = a2.f10 AND a3.f2 = a4

4499

LIMIT 1) IS NULL,

4500

4501

t3.f5

4502

)

4503

) AS a6

4504

FROM

4505

t2, t3, t1 JOIN t2 a1 ON t1.f9 = a1.f4

4506

GROUP BY a4;

4507

a4 f3 a6

4508

1 NULL NULL

4509

2 NULL NULL

4510

DROP TABLE t1, t2, t3, t4;

4511

create table t1 (a float(5,4) zerofill);

4512

create table t2 (a float(5,4),b float(2,0));

4513

select t1.a from t1 where

4514

t1.a= (select b from t2 limit 1) and not

4515

t1.a= (select a from t2 limit 1) ;

4516

4517

drop table t1, t2;

4518

CREATE TABLE t1 (a INT);

4519

INSERT INTO t1 VALUES (1),(2);

4520

SET @save_join_cache_level=@@join_cache_level;

4521

SET join_cache_level=0;

4522

EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 GROUP BY a);

4523

id select_type table type possible_keys key key_len ref rows filtered Extra

4524

1 PRIMARY <subquery2> const distinct_key distinct_key 4 const 1 100.00

4525

1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00

4526

2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary

4527

Warnings:

4528

Note 1003 select 1 AS `1` from <materialize> (select min(`test`.`t1`.`a`) from `test`.`t1` group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`min(a)` = 1)

4529

EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 WHERE a > 3 GROUP BY a);

4530

id select_type table type possible_keys key key_len ref rows filtered Extra

4531

1 PRIMARY <subquery2> const distinct_key distinct_key 4 const 1 100.00

4532

1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00

4533

2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary

4534

Warnings:

4535

Note 1003 select 1 AS `1` from <materialize> (select min(`test`.`t1`.`a`) from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`min(a)` = 1)

4536

SET join_cache_level=@save_join_cache_level;

4537

DROP TABLE t1;

4538

4539

# Bug#45061: Incorrectly market field caused wrong result.

4540

4541

CREATE TABLE `C` (

4542

`int_nokey` int(11) NOT NULL,

4543

`int_key` int(11) NOT NULL,

4544

KEY `int_key` (`int_key`)

4545

);

4546

INSERT INTO `C` VALUES (9,9), (0,0), (8,6), (3,6), (7,6), (0,4),

4547

(1,7), (9,4), (0,8), (9,4), (0,7), (5,5), (0,0), (8,5), (8,7),

4548

(5,2), (1,8), (7,0), (0,9), (9,5);

4549

SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);

4550

int_nokey int_key

4551

9 9

4552

0 0

4553

5 5

4554

0 0

4555

EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);

4556

id select_type table type possible_keys key key_len ref rows filtered Extra

4557

1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where

4558

DROP TABLE C;

4559

# End of test for bug#45061.

4560

4561

# Bug #46749: Segfault in add_key_fields() with outer subquery level

4562

# field references

4563

4564

CREATE TABLE t1 (

4565

a int,

4566

b int,

4567

UNIQUE (a), KEY (b)

4568

);

4569

INSERT INTO t1 VALUES (1,1), (2,1);

4570

CREATE TABLE st1 like t1;

4571

INSERT INTO st1 VALUES (1,1), (2,1);

4572

CREATE TABLE st2 like t1;

4573

INSERT INTO st2 VALUES (1,1), (2,1);

4574

EXPLAIN

4575

SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)

4576

FROM t1

4577

WHERE a = 230;

4578

id select_type table type possible_keys key key_len ref rows Extra

4579

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

4580

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

4581

SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)

4582

FROM t1

4583

WHERE a = 230;

4584

MAX(b) (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)

4585

NULL NULL

4586

DROP TABLE t1, st1, st2;

4587

4588

# Bug #48709: Assertion failed in sql_select.cc:11782:

4589

# int join_read_key(JOIN_TAB*)

4590

4591

CREATE TABLE t1 (pk int PRIMARY KEY, int_key int);

4592

INSERT INTO t1 VALUES (10,1), (14,1);

4593

CREATE TABLE t2 (pk int PRIMARY KEY, int_key int);

4594

INSERT INTO t2 VALUES (3,3), (5,NULL), (7,3);

4595

# should have eq_ref for t1

4596

EXPLAIN

4597

SELECT * FROM t2 outr

4598

WHERE outr.int_key NOT IN (SELECT t1.pk FROM t1, t2)

4599

ORDER BY outr.pk;

4600

id select_type table type possible_keys key key_len ref rows Extra

4601

x x outr ALL x x x x x x

4602

x x t1 eq_ref x x x x x x

4603

x x t2 index x x x x x x

4604

# should not crash on debug binaries

4605

SELECT * FROM t2 outr

4606

WHERE outr.int_key NOT IN (SELECT t1.pk FROM t1, t2)

4607

ORDER BY outr.pk;

4608

pk int_key

4609

3 3

4610

7 3

4611

DROP TABLE t1,t2;

4612

4613

# Bug#12329653

4614

# EXPLAIN, UNION, PREPARED STATEMENT, CRASH, SQL_FULL_GROUP_BY

4615

4616

CREATE TABLE t1(a1 int);

4617

INSERT INTO t1 VALUES (1),(2);

4618

SELECT @@session.sql_mode INTO @old_sql_mode;

4619

SET SESSION sql_mode='ONLY_FULL_GROUP_BY';

4620

EXPLAIN EXTENDED

4621

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT a1 FROM t1);

4622

id select_type table type possible_keys key key_len ref rows filtered Extra

4623

1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00

4624

2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00

4625

Warnings:

4626

Note 1003 select 1 AS `1` from `test`.`t1` where 1

4627

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT a1 FROM t1);

4628

4629

4630

4631

PREPARE stmt FROM

4632

'SELECT 1 UNION ALL

4633

SELECT 1 FROM t1

4634

ORDER BY

4635

(SELECT 1 FROM t1 AS t1_0

4636

WHERE 1 < SOME (SELECT a1 FROM t1)

4637

)' ;

4638

EXECUTE stmt ;

4639

ERROR 21000: Subquery returns more than 1 row

4640

EXECUTE stmt ;

4641

ERROR 21000: Subquery returns more than 1 row

4642

SET SESSION sql_mode=@old_sql_mode;

4643

DEALLOCATE PREPARE stmt;

4644

DROP TABLE t1;

4645

4646

# Bug#12763207 - ASSERT IN SUBSELECT::SINGLE_VALUE_TRANSFORMER

4647

4648

CREATE TABLE t1(a1 int);

4649

INSERT INTO t1 VALUES (1),(2);

4650

CREATE TABLE t2(a1 int);

4651

INSERT INTO t2 VALUES (3);

4652

SELECT @@session.sql_mode INTO @old_sql_mode;

4653

SET SESSION sql_mode='ONLY_FULL_GROUP_BY';

4654

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT 2 FROM t2);

4655

4656

4657

4658

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT 2.0 FROM t2);

4659

4660

4661

4662

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT 'a' FROM t2);

4663

4664

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT a1 FROM t2);

4665

4666

4667

4668

SET SESSION sql_mode=@old_sql_mode;

4669

DROP TABLE t1, t2;

4670

4671

# Bug#12763207 - ASSERT IN SUBSELECT::SINGLE_VALUE_TRANSFORMER

4672

4673

create table t2(i int);

4674

insert into t2 values(0);

4675

SELECT @@session.sql_mode INTO @old_sql_mode;

4676

SET SESSION sql_mode='ONLY_FULL_GROUP_BY';

4677

CREATE VIEW v1 AS

4678

SELECT 'f' FROM t2 UNION SELECT 'x' FROM t2

4679

;

4680

CREATE TABLE t1 (

4681

pk int NOT NULL,

4682

col_varchar_key varchar(1) DEFAULT NULL,

4683

PRIMARY KEY (pk),

4684

KEY col_varchar_key (col_varchar_key)

4685

);

4686

SELECT t1.pk

4687

FROM t1

4688

WHERE t1.col_varchar_key < ALL ( SELECT * FROM v1 )

4689

;

4690

4691

SET SESSION sql_mode=@old_sql_mode;

4692

drop table t2, t1;

4693

drop view v1;

4694

End of 5.0 tests.

4695

create table t_out (subcase char(3),

4696

a1 char(2), b1 char(2), c1 char(2));

4697

create table t_in (a2 char(2), b2 char(2), c2 char(2));

4698

insert into t_out values ('A.1','2a', NULL, '2a');

4699

insert into t_out values ('A.3', '2a', NULL, '2a');

4700

insert into t_out values ('A.4', '2a', NULL, 'xx');

4701

insert into t_out values ('B.1', '2a', '2a', '2a');

4702

insert into t_out values ('B.2', '2a', '2a', '2a');

4703

insert into t_out values ('B.3', '3a', 'xx', '3a');

4704

insert into t_out values ('B.4', 'xx', '3a', '3a');

4705

insert into t_in values ('1a', '1a', '1a');

4706

insert into t_in values ('2a', '2a', '2a');

4707

insert into t_in values (NULL, '2a', '2a');

4708

insert into t_in values ('3a', NULL, '3a');

4709

4710

Test general IN semantics (not top-level)

4711

4712

case A.1

4713

select subcase,

4714

(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in,

4715

(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in

4716

from t_out where subcase = 'A.1';

4717

subcase pred_in pred_not_in

4718

A.1 0 1

4719

case A.2 - impossible

4720

case A.3

4721

select subcase,

4722

(a1, b1, c1) IN (select * from t_in) pred_in,

4723

(a1, b1, c1) NOT IN (select * from t_in) pred_not_in

4724

from t_out where subcase = 'A.3';

4725

subcase pred_in pred_not_in

4726

A.3 NULL NULL

4727

case A.4

4728

select subcase,

4729

(a1, b1, c1) IN (select * from t_in) pred_in,

4730

(a1, b1, c1) NOT IN (select * from t_in) pred_not_in

4731

from t_out where subcase = 'A.4';

4732

subcase pred_in pred_not_in

4733

A.4 0 1

4734

case B.1

4735

select subcase,

4736

(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in,

4737

(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in

4738

from t_out where subcase = 'B.1';

4739

subcase pred_in pred_not_in

4740

B.1 0 1

4741

case B.2

4742

select subcase,

4743

(a1, b1, c1) IN (select * from t_in) pred_in,

4744

(a1, b1, c1) NOT IN (select * from t_in) pred_not_in

4745

from t_out where subcase = 'B.2';

4746

subcase pred_in pred_not_in

4747

B.2 1 0

4748

case B.3

4749

select subcase,

4750

(a1, b1, c1) IN (select * from t_in) pred_in,

4751

(a1, b1, c1) NOT IN (select * from t_in) pred_not_in

4752

from t_out where subcase = 'B.3';

4753

subcase pred_in pred_not_in

4754

B.3 NULL NULL

4755

case B.4

4756

select subcase,

4757

(a1, b1, c1) IN (select * from t_in) pred_in,

4758

(a1, b1, c1) NOT IN (select * from t_in) pred_not_in

4759

from t_out where subcase = 'B.4';

4760

subcase pred_in pred_not_in

4761

B.4 0 1

4762

4763

Test IN as top-level predicate, and

4764

as non-top level for cases A.3, B.3 (the only cases with NULL result).

4765

4766

case A.1

4767

select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out

4768

where subcase = 'A.1' and

4769

(a1, b1, c1) IN (select * from t_in where a1 = 'no_match');

4770

pred_in

4771

4772

select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out

4773

where subcase = 'A.1' and

4774

(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match');

4775

pred_not_in

4776

4777

select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out

4778

where subcase = 'A.1' and

4779

NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match'));

4780

not_pred_in

4781

4782

case A.3

4783

select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out

4784

where subcase = 'A.3' and

4785

(a1, b1, c1) IN (select * from t_in);

4786

pred_in

4787

4788

select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out

4789

where subcase = 'A.3' and

4790

(a1, b1, c1) NOT IN (select * from t_in);

4791

pred_not_in

4792

4793

select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out

4794

where subcase = 'A.3' and

4795

NOT((a1, b1, c1) IN (select * from t_in));

4796

not_pred_in

4797

4798

select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out

4799

where subcase = 'A.3' and

4800

((a1, b1, c1) IN (select * from t_in)) is NULL and

4801

((a1, b1, c1) NOT IN (select * from t_in)) is NULL;

4802

pred_in

4803

4804

case A.4

4805

select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out

4806

where subcase = 'A.4' and

4807

(a1, b1, c1) IN (select * from t_in);

4808

pred_in

4809

4810

select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out

4811

where subcase = 'A.4' and

4812

(a1, b1, c1) NOT IN (select * from t_in);

4813

pred_not_in

4814

4815

select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out

4816

where subcase = 'A.4' and

4817

NOT((a1, b1, c1) IN (select * from t_in));

4818

not_pred_in

4819

4820

case B.1

4821

select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out

4822

where subcase = 'B.1' and

4823

(a1, b1, c1) IN (select * from t_in where a1 = 'no_match');

4824

pred_in

4825

4826

select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out

4827

where subcase = 'B.1' and

4828

(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match');

4829

pred_not_in

4830

4831

select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out

4832

where subcase = 'B.1' and

4833

NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match'));

4834

not_pred_in

4835

4836

case B.2

4837

select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out

4838

where subcase = 'B.2' and

4839

(a1, b1, c1) IN (select * from t_in);

4840

pred_in

4841

4842

select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out

4843

where subcase = 'B.2' and

4844

(a1, b1, c1) NOT IN (select * from t_in);

4845

pred_not_in

4846

4847

select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out

4848

where subcase = 'B.2' and

4849

NOT((a1, b1, c1) IN (select * from t_in));

4850

not_pred_in

4851

4852

case B.3

4853

select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out

4854

where subcase = 'B.3' and

4855

(a1, b1, c1) IN (select * from t_in);

4856

pred_in

4857

4858

select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out

4859

where subcase = 'B.3' and

4860

(a1, b1, c1) NOT IN (select * from t_in);

4861

pred_not_in

4862

4863

select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out

4864

where subcase = 'B.3' and

4865

NOT((a1, b1, c1) IN (select * from t_in));

4866

not_pred_in

4867

4868

select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out

4869

where subcase = 'B.3' and

4870

((a1, b1, c1) IN (select * from t_in)) is NULL and

4871

((a1, b1, c1) NOT IN (select * from t_in)) is NULL;

4872

pred_in

4873

4874

case B.4

4875

select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out

4876

where subcase = 'B.4' and

4877

(a1, b1, c1) IN (select * from t_in);

4878

pred_in

4879

4880

select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out

4881

where subcase = 'B.4' and

4882

(a1, b1, c1) NOT IN (select * from t_in);

4883

pred_not_in

4884

4885

select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out

4886

where subcase = 'B.4' and

4887

NOT((a1, b1, c1) IN (select * from t_in));

4888

not_pred_in

4889

4890

drop table t_out;

4891

drop table t_in;

4892

CREATE TABLE t1 (a INT, b INT);

4893

INSERT INTO t1 VALUES (2,22),(1,11),(2,22);

4894

SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a;

4895

4896

4897

4898

SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a;

4899

4900

SELECT a FROM t1 t0

4901

WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a;

4902

4903

4904

4905

SET @@sql_mode='ansi';

4906

SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a;

4907

ERROR HY000: Invalid use of group function

4908

SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a;

4909

ERROR HY000: Invalid use of group function

4910

SELECT a FROM t1 t0

4911

WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a;

4912

ERROR HY000: Invalid use of group function

4913

SET @@sql_mode=default;

4914

DROP TABLE t1;

4915

CREATE TABLE t1 (s1 CHAR(1));

4916

INSERT INTO t1 VALUES ('a');

4917

SELECT * FROM t1 WHERE _utf8'a' = ANY (SELECT s1 FROM t1);

4918

4919

4920

DROP TABLE t1;

4921

CREATE TABLE t1(c INT, KEY(c));

4922

CREATE TABLE t2(a INT, b INT);

4923

INSERT INTO t2 VALUES (1, 10), (2, NULL);

4924

INSERT INTO t1 VALUES (1), (3);

4925

SELECT * FROM t2 WHERE b NOT IN (SELECT max(t.c) FROM t1, t1 t WHERE t.c>10);

4926

a b

4927

DROP TABLE t1,t2;

4928

CREATE TABLE t1(pk INT PRIMARY KEY, a INT, INDEX idx(a));

4929

INSERT INTO t1 VALUES (1, 10), (3, 30), (2, 20);

4930

CREATE TABLE t2(pk INT PRIMARY KEY, a INT, b INT, INDEX idxa(a));

4931

INSERT INTO t2 VALUES (2, 20, 700), (1, 10, 200), (4, 10, 100);

4932

SELECT * FROM t1

4933

WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b);

4934

pk a

4935

1 10

4936

DROP TABLE t1,t2;

4937

CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a), KEY b (b));

4938

INSERT INTO t1 VALUES (1,NULL), (9,NULL);

4939

CREATE TABLE t2 (

4940

a INT,

4941

b INT,

4942

c INT,

4943

d INT,

4944

PRIMARY KEY (a),

4945

UNIQUE KEY b (b,c,d),

4946

KEY b_2 (b),

4947

KEY c (c),

4948

KEY d (d)

4949

);

4950

INSERT INTO t2 VALUES

4951

(43, 2, 11 ,30),

4952

(44, 2, 12 ,30),

4953

(45, 1, 1 ,10000),

4954

(46, 1, 2 ,10000),

4955

(556,1, 32 ,10000);

4956

CREATE TABLE t3 (

4957

a INT,

4958

b INT,

4959

c INT,

4960

PRIMARY KEY (a),

4961

UNIQUE KEY b (b,c),

4962

KEY c (c),

4963

KEY b_2 (b)

4964

);

4965

INSERT INTO t3 VALUES (1,1,1), (2,32,1);

4966

explain

4967

SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a;

4968

id select_type table type possible_keys key key_len ref rows Extra

4969

1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index

4970

1 PRIMARY t3 ref b,b_2 b 5 test.t1.a 1 Using index

4971

2 DEPENDENT SUBQUERY t2 ref b,b_2,c b 10 test.t3.c,test.t1.a 1 Using where; Using index; Using filesort

4972

SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a;

4973

a incorrect

4974

1 1

4975

DROP TABLE t1,t2,t3;

4976

CREATE TABLE t1 (id int);

4977

CREATE TABLE t2 (id int, c int);

4978

INSERT INTO t1 (id) VALUES (1);

4979

INSERT INTO t2 (id) VALUES (1);

4980

INSERT INTO t1 (id) VALUES (1);

4981

INSERT INTO t2 (id) VALUES (1);

4982

CREATE VIEW v1 AS

4983

SELECT t2.c AS c FROM t1, t2

4984

WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION;

4985

UPDATE v1 SET c=1;

4986

CREATE VIEW v2 (a,b) AS

4987

SELECT t2.id, t2.c AS c FROM t1, t2

4988

WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION;

4989

INSERT INTO v2(a,b) VALUES (2,2);

4990

ERROR HY000: CHECK OPTION failed 'test.v2'

4991

SELECT * FROM v1;

4992

4993

4994

4995

4996

4997

CREATE VIEW v3 AS

4998

SELECT t2.c AS c FROM t2

4999

WHERE 1 IN (SELECT id FROM t1) WITH CHECK OPTION;

5000

DELETE FROM v3;

5001

DROP VIEW v1,v2,v3;

5002

DROP TABLE t1,t2;

5003

5004

# BUG#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result

5005

5006

create table t1(id integer primary key, g integer, v integer, s char(1));

5007

create table t2(id integer primary key, g integer, v integer, s char(1));

5008

insert into t1 values

5009

(10, 10, 10, 'l'),

5010

(20, 20, 20, 'l'),

5011

(40, 40, 40, 'l'),

5012

(41, 40, null, 'l'),

5013

(50, 50, 50, 'l'),

5014

(51, 50, null, 'l'),

5015

(60, 60, 60, 'l'),

5016

(61, 60, null, 'l'),

5017

(70, 70, 70, 'l'),

5018

(90, 90, null, 'l');

5019

insert into t2 values

5020

(10, 10, 10, 'r'),

5021

(30, 30, 30, 'r'),

5022

(50, 50, 50, 'r'),

5023

(60, 60, 60, 'r'),

5024

(61, 60, null, 'r'),

5025

(70, 70, 70, 'r'),

5026

(71, 70, null, 'r'),

5027

(80, 80, 80, 'r'),

5028

(81, 80, null, 'r'),

5029

(100,100,null, 'r');

5030

select *

5031

from t1

5032

where v in(select v

5033

from t2

5034

where t1.g=t2.g) is unknown;

5035

id g v s

5036

51 50 NULL l

5037

61 60 NULL l

5038

drop table t1, t2;

5039

5040

# Bug#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result

5041

5042

create table t1(id integer primary key, g integer, v integer, s char(1));

5043

create table t2(id integer primary key, g integer, v integer, s char(1));

5044

insert into t1 values

5045

(10, 10, 10, 'l'),

5046

(20, 20, 20, 'l'),

5047

(40, 40, 40, 'l'),

5048

(41, 40, null, 'l'),

5049

(50, 50, 50, 'l'),

5050

(51, 50, null, 'l'),

5051

(60, 60, 60, 'l'),

5052

(61, 60, null, 'l'),

5053

(70, 70, 70, 'l'),

5054

(90, 90, null, 'l');

5055

insert into t2 values

5056

(10, 10, 10, 'r'),

5057

(30, 30, 30, 'r'),

5058

(50, 50, 50, 'r'),

5059

(60, 60, 60, 'r'),

5060

(61, 60, null, 'r'),

5061

(70, 70, 70, 'r'),

5062

(71, 70, null, 'r'),

5063

(80, 80, 80, 'r'),

5064

(81, 80, null, 'r'),

5065

(100,100,null, 'r');

5066

select *

5067

from t1

5068

where v in(select v

5069

from t2

5070

where t1.g=t2.g) is unknown;

5071

id g v s

5072

51 50 NULL l

5073

61 60 NULL l

5074

drop table t1, t2;

5075

5076

# Bug#33204: INTO is allowed in subselect, causing inconsistent results

5077

5078

CREATE TABLE t1( a INT );

5079

INSERT INTO t1 VALUES (1),(2);

5080

CREATE TABLE t2( a INT, b INT );

5081

SELECT *

5082

FROM (SELECT a INTO @var FROM t1 WHERE a = 2) t1a;

5083

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @var FROM t1 WHERE a = 2) t1a' at line 2

5084

SELECT *

5085

FROM (SELECT a INTO OUTFILE 'file' FROM t1 WHERE a = 2) t1a;

5086

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' FROM t1 WHERE a = 2) t1a' at line 2

5087

SELECT *

5088

FROM (SELECT a INTO DUMPFILE 'file' FROM t1 WHERE a = 2) t1a;

5089

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' FROM t1 WHERE a = 2) t1a' at line 2

5090

SELECT * FROM (

5091

SELECT 1 a

5092

UNION

5093

SELECT a INTO @var FROM t1 WHERE a = 2

5094

) t1a;

5095

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @var FROM t1 WHERE a = 2

5096

) t1a' at line 4

5097

SELECT * FROM (

5098

SELECT 1 a

5099

UNION

5100

SELECT a INTO OUTFILE 'file' FROM t1 WHERE a = 2

5101

) t1a;

5102

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' FROM t1 WHERE a = 2

5103

) t1a' at line 4

5104

SELECT * FROM (

5105

SELECT 1 a

5106

UNION

5107

SELECT a INTO DUMPFILE 'file' FROM t1 WHERE a = 2

5108

) t1a;

5109

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' FROM t1 WHERE a = 2

5110

) t1a' at line 4

5111

SELECT * FROM (SELECT a FROM t1 WHERE a = 2) t1a;

5112

5113

5114

SELECT * FROM (

5115

SELECT a FROM t1 WHERE a = 2

5116

UNION

5117

SELECT a FROM t1 WHERE a = 2

5118

) t1a;

5119

5120

5121

SELECT * FROM (

5122

SELECT 1 a

5123

UNION

5124

SELECT a FROM t1 WHERE a = 2

5125

UNION

5126

SELECT a FROM t1 WHERE a = 2

5127

) t1a;

5128

5129

5130

5131

SELECT * FROM ((SELECT 1 a) UNION SELECT 1 a);

5132

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ')' at line 1

5133

SELECT * FROM (SELECT 1 a UNION (SELECT 1 a)) alias;

5134

5135

5136

SELECT * FROM (SELECT 1 UNION SELECT 1) t1a;

5137

5138

5139

SELECT * FROM ((SELECT 1 a INTO @a)) t1a;

5140

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @a)) t1a' at line 1

5141

SELECT * FROM ((SELECT 1 a INTO OUTFILE 'file' )) t1a;

5142

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' )) t1a' at line 1

5143

SELECT * FROM ((SELECT 1 a INTO DUMPFILE 'file' )) t1a;

5144

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' )) t1a' at line 1

5145

SELECT * FROM (SELECT 1 a UNION (SELECT 1 a INTO @a)) t1a;

5146

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @a)) t1a' at line 1

5147

SELECT * FROM (SELECT 1 a UNION (SELECT 1 a INTO DUMPFILE 'file' )) t1a;

5148

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' )) t1a' at line 1

5149

SELECT * FROM (SELECT 1 a UNION (SELECT 1 a INTO OUTFILE 'file' )) t1a;

5150

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' )) t1a' at line 1

5151

SELECT * FROM (SELECT 1 a UNION ((SELECT 1 a INTO @a))) t1a;

5152

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @a))) t1a' at line 1

5153

SELECT * FROM (SELECT 1 a UNION ((SELECT 1 a INTO DUMPFILE 'file' ))) t1a;

5154

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' ))) t1a' at line 1

5155

SELECT * FROM (SELECT 1 a UNION ((SELECT 1 a INTO OUTFILE 'file' ))) t1a;

5156

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' ))) t1a' at line 1

5157

SELECT * FROM (SELECT 1 a ORDER BY a) t1a;

5158

5159

5160

SELECT * FROM (SELECT 1 a UNION SELECT 1 a ORDER BY a) t1a;

5161

5162

5163

SELECT * FROM (SELECT 1 a UNION SELECT 1 a LIMIT 1) t1a;

5164

5165

5166

SELECT * FROM (SELECT 1 a UNION SELECT 1 a ORDER BY a LIMIT 1) t1a;

5167

5168

5169

SELECT * FROM t1 JOIN (SELECT 1 UNION SELECT 1) alias ON 1;

5170

a 1

5171

1 1

5172

2 1

5173

SELECT * FROM t1 JOIN ((SELECT 1 UNION SELECT 1)) ON 1;

5174

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ')) ON 1' at line 1

5175

SELECT * FROM t1 JOIN (t1 t1a UNION SELECT 1) ON 1;

5176

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ') ON 1' at line 1

5177

SELECT * FROM t1 JOIN ((t1 t1a UNION SELECT 1)) ON 1;

5178

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ')) ON 1' at line 1

5179

SELECT * FROM t1 JOIN (t1 t1a) t1a ON 1;

5180

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 't1a ON 1' at line 1

5181

SELECT * FROM t1 JOIN ((t1 t1a)) t1a ON 1;

5182

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 't1a ON 1' at line 1

5183

SELECT * FROM t1 JOIN (t1 t1a) ON 1;

5184

a a

5185

1 1

5186

2 1

5187

1 2

5188

2 2

5189

SELECT * FROM t1 JOIN ((t1 t1a)) ON 1;

5190

a a

5191

1 1

5192

2 1

5193

1 2

5194

2 2

5195

SELECT * FROM (t1 t1a);

5196

5197

5198

5199

SELECT * FROM ((t1 t1a));

5200

5201

5202

5203

SELECT * FROM t1 JOIN (SELECT 1 t1a) alias ON 1;

5204

a t1a

5205

1 1

5206

2 1

5207

SELECT * FROM t1 JOIN ((SELECT 1 t1a)) alias ON 1;

5208

a t1a

5209

1 1

5210

2 1

5211

SELECT * FROM t1 JOIN (SELECT 1 a) a ON 1;

5212

a a

5213

1 1

5214

2 1

5215

SELECT * FROM t1 JOIN ((SELECT 1 a)) a ON 1;

5216

a a

5217

1 1

5218

2 1

5219

SELECT * FROM (t1 JOIN (SELECT 1) t1a1 ON 1) t1a2;

5220

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 't1a2' at line 1

5221

SELECT * FROM t1 WHERE a = ALL ( SELECT 1 );

5222

5223

5224

SELECT * FROM t1 WHERE a = ALL ( SELECT 1 UNION SELECT 1 );

5225

5226

5227

SELECT * FROM t1 WHERE a = ANY ( SELECT 3 UNION SELECT 1 );

5228

5229

5230

SELECT * FROM t1 WHERE a = ANY ( SELECT 1 UNION SELECT 1 INTO @a);

5231

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @a)' at line 1

5232

SELECT * FROM t1 WHERE a = ANY ( SELECT 1 UNION SELECT 1 INTO OUTFILE 'file' );

5233

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' )' at line 1

5234

SELECT * FROM t1 WHERE a = ANY ( SELECT 1 UNION SELECT 1 INTO DUMPFILE 'file' );

5235

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' )' at line 1

5236

SELECT * FROM t1 WHERE a = ( SELECT 1 );

5237

5238

5239

SELECT * FROM t1 WHERE a = ( SELECT 1 UNION SELECT 1 );

5240

5241

5242

SELECT * FROM t1 WHERE a = ( SELECT 1 INTO @a);

5243

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @a)' at line 1

5244

SELECT * FROM t1 WHERE a = ( SELECT 1 INTO OUTFILE 'file' );

5245

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' )' at line 1

5246

SELECT * FROM t1 WHERE a = ( SELECT 1 INTO DUMPFILE 'file' );

5247

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' )' at line 1

5248

SELECT * FROM t1 WHERE a = ( SELECT 1 UNION SELECT 1 INTO @a);

5249

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @a)' at line 1

5250

SELECT * FROM t1 WHERE a = ( SELECT 1 UNION SELECT 1 INTO OUTFILE 'file' );

5251

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' )' at line 1

5252

SELECT * FROM t1 WHERE a = ( SELECT 1 UNION SELECT 1 INTO DUMPFILE 'file' );

5253

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' )' at line 1

5254

SELECT ( SELECT 1 INTO @v );

5255

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @v )' at line 1

5256

SELECT ( SELECT 1 INTO OUTFILE 'file' );

5257

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' )' at line 1

5258

SELECT ( SELECT 1 INTO DUMPFILE 'file' );

5259

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' )' at line 1

5260

SELECT ( SELECT 1 UNION SELECT 1 INTO @v );

5261

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @v )' at line 1

5262

SELECT ( SELECT 1 UNION SELECT 1 INTO OUTFILE 'file' );

5263

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO OUTFILE 'file' )' at line 1

5264

SELECT ( SELECT 1 UNION SELECT 1 INTO DUMPFILE 'file' );

5265

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO DUMPFILE 'file' )' at line 1

5266

SELECT ( SELECT a FROM t1 WHERE a = 1 ), a FROM t1;

5267

( SELECT a FROM t1 WHERE a = 1 ) a

5268

1 1

5269

1 2

5270

SELECT ( SELECT a FROM t1 WHERE a = 1 UNION SELECT 1 ), a FROM t1;

5271

( SELECT a FROM t1 WHERE a = 1 UNION SELECT 1 ) a

5272

1 1

5273

1 2

5274

SELECT * FROM t2 WHERE (a, b) IN (SELECT a, b FROM t2);

5275

a b

5276

SELECT 1 UNION ( SELECT 1 UNION SELECT 1 );

5277

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 )' at line 1

5278

( SELECT 1 UNION SELECT 1 ) UNION SELECT 1;

5279

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) UNION SELECT 1' at line 1

5280

SELECT ( SELECT 1 UNION ( SELECT 1 UNION SELECT 1 ) );

5281

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) )' at line 1

5282

SELECT ( ( SELECT 1 UNION SELECT 1 ) UNION SELECT 1;

5283

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1' at line 1

5284

SELECT ( SELECT 1 UNION SELECT 1 UNION SELECT 1 );

5285

( SELECT 1 UNION SELECT 1 UNION SELECT 1 )

5286

5287

SELECT ((SELECT 1 UNION SELECT 1 UNION SELECT 1));

5288

((SELECT 1 UNION SELECT 1 UNION SELECT 1))

5289

5290

SELECT * FROM ( SELECT 1 UNION ( SELECT 1 UNION SELECT 1 ) );

5291

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) )' at line 1

5292

SELECT * FROM ( ( SELECT 1 UNION SELECT 1 ) UNION SELECT 1 );

5293

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ') UNION SELECT 1 )' at line 1

5294

SELECT * FROM ( SELECT 1 UNION SELECT 1 UNION SELECT 1 ) a;

5295

5296

5297

SELECT * FROM t1 WHERE a = ( SELECT 1 UNION ( SELECT 1 UNION SELECT 1 ) );

5298

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) )' at line 1

5299

SELECT * FROM t1 WHERE a = ALL ( SELECT 1 UNION ( SELECT 1 UNION SELECT 1 ) );

5300

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) )' at line 1

5301

SELECT * FROM t1 WHERE a = ANY ( SELECT 1 UNION ( SELECT 1 UNION SELECT 1 ) );

5302

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) )' at line 1

5303

SELECT * FROM t1 WHERE a IN ( SELECT 1 UNION ( SELECT 1 UNION SELECT 1 ) );

5304

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) )' at line 1

5305

SELECT * FROM t1 WHERE a = ( ( SELECT 1 UNION SELECT 1 ) UNION SELECT 1 );

5306

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 )' at line 1

5307

SELECT * FROM t1 WHERE a = ALL ( ( SELECT 1 UNION SELECT 1 ) UNION SELECT 1 );

5308

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) UNION SELECT 1 )' at line 1

5309

SELECT * FROM t1 WHERE a = ANY ( ( SELECT 1 UNION SELECT 1 ) UNION SELECT 1 );

5310

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 ) UNION SELECT 1 )' at line 1

5311

SELECT * FROM t1 WHERE a IN ( ( SELECT 1 UNION SELECT 1 ) UNION SELECT 1 );

5312

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 1 )' at line 1

5313

SELECT * FROM t1 WHERE a = ( SELECT 1 UNION SELECT 1 UNION SELECT 1 );

5314

5315

5316

SELECT * FROM t1 WHERE a = ALL ( SELECT 1 UNION SELECT 1 UNION SELECT 1 );

5317

5318

5319

SELECT * FROM t1 WHERE a = ANY ( SELECT 1 UNION SELECT 1 UNION SELECT 1 );

5320

5321

5322

SELECT * FROM t1 WHERE a IN ( SELECT 1 UNION SELECT 1 UNION SELECT 1 );

5323

5324

5325

SELECT * FROM t1 WHERE EXISTS ( SELECT 1 UNION SELECT 1 INTO @v );

5326

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @v )' at line 1

5327

SELECT EXISTS(SELECT 1+1);

5328

EXISTS(SELECT 1+1)

5329

5330

SELECT EXISTS(SELECT 1+1 INTO @test);

5331

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @test)' at line 1

5332

SELECT * FROM t1 WHERE a IN ( SELECT 1 UNION SELECT 1 INTO @v );

5333

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @v )' at line 1

5334

SELECT * FROM t1 WHERE EXISTS ( SELECT 1 INTO @v );

5335

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @v )' at line 1

5336

SELECT * FROM t1 WHERE a IN ( SELECT 1 INTO @v );

5337

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @v )' at line 1

5338

DROP TABLE t1, t2;

5339

CREATE TABLE t1 (a ENUM('rainbow'));

5340

INSERT INTO t1 VALUES (),(),(),(),();

5341

SELECT 1 FROM t1 GROUP BY (SELECT 1 FROM t1 ORDER BY AVG(LAST_INSERT_ID()));

5342

5343

5344

DROP TABLE t1;

5345

CREATE TABLE t1 (a LONGBLOB);

5346

INSERT INTO t1 SET a = 'aaaa';

5347

INSERT INTO t1 SET a = 'aaaa';

5348

SELECT 1 FROM t1 GROUP BY

5349

(SELECT LAST_INSERT_ID() FROM t1 ORDER BY MIN(a) ASC LIMIT 1);

5350

5351

5352

DROP TABLE t1;

5353

5354

# Bug #49512 : subquery with aggregate function crash

5355

# subselect_single_select_engine::exec()

5356

CREATE TABLE t1(a INT);

5357

INSERT INTO t1 VALUES();

5358

# should not crash

5359

SELECT 1 FROM t1 WHERE a <> SOME

5360

(

5361

SELECT MAX((SELECT a FROM t1 LIMIT 1)) AS d

5362

FROM t1,t1 a

5363

);

5364

5365

DROP TABLE t1;

5366

5367

# Bug #45989 take 2 : memory leak after explain encounters an

5368

# error in the query

5369

5370

CREATE TABLE t1(a LONGTEXT);

5371

INSERT INTO t1 VALUES (repeat('a',@@global.max_allowed_packet));

5372

INSERT INTO t1 VALUES (repeat('b',@@global.max_allowed_packet));

5373

EXPLAIN EXTENDED SELECT DISTINCT 1 FROM t1,

5374

(SELECT DISTINCTROW a AS away FROM t1 GROUP BY a WITH ROLLUP) AS d1

5375

WHERE t1.a = d1.a;

5376

ERROR 42S22: Unknown column 'd1.a' in 'where clause'

5377

DROP TABLE t1;

5378

Set up test tables.

5379

CREATE TABLE t1 (

5380

t1_id INT UNSIGNED,

5381

PRIMARY KEY(t1_id)

5382

) Engine=MyISAM;

5383

INSERT INTO t1 (t1_id) VALUES (1), (2), (3), (4), (5);

5384

CREATE TABLE t2 SELECT * FROM t1;

5385

CREATE TABLE t3 (

5386

t3_id INT UNSIGNED AUTO_INCREMENT,

5387

t1_id INT UNSIGNED,

5388

amount DECIMAL(16,2),

5389

PRIMARY KEY(t3_id),

5390

KEY(t1_id)

5391

) Engine=MyISAM;

5392

INSERT INTO t3 (t1_id, t3_id, amount)

5393

VALUES (1, 1, 100.00), (2, 2, 200.00), (4, 4, 400.00);

5394

This is the 'inner query' running by itself.

5395

Produces correct results.

5396

SELECT

5397

t1.t1_id,

5398

IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount

5399

FROM

5400

5401

LEFT JOIN t2 ON t2.t1_id=t1.t1_id

5402

GROUP BY

5403

t1.t1_id

5404

;

5405

t1_id total_amount

5406

1 100.00

5407

2 200.00

5408

3 0.00

5409

4 400.00

5410

5 0.00

5411

SELECT * FROM (the same inner query)

5412

Produces correct results.

5413

SELECT * FROM (

5414

SELECT

5415

t1.t1_id,

5416

IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount

5417

FROM

5418

5419

LEFT JOIN t2 ON t2.t1_id=t1.t1_id

5420

GROUP BY

5421

t1.t1_id

5422

) AS t;

5423

t1_id total_amount

5424

1 100.00

5425

2 200.00

5426

3 0.00

5427

4 400.00

5428

5 0.00

5429

Now make t2.t1_id part of a key.

5430

ALTER TABLE t2 ADD PRIMARY KEY(t1_id);

5431

Same inner query by itself.

5432

Still correct results.

5433

SELECT

5434

t1.t1_id,

5435

IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount

5436

FROM

5437

5438

LEFT JOIN t2 ON t2.t1_id=t1.t1_id

5439

GROUP BY

5440

t1.t1_id;

5441

t1_id total_amount

5442

1 100.00

5443

2 200.00

5444

3 0.00

5445

4 400.00

5446

5 0.00

5447

SELECT * FROM (the same inner query), now with indexes on the LEFT JOIN

5448

SELECT * FROM (

5449

SELECT

5450

t1.t1_id,

5451

IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount

5452

FROM

5453

5454

LEFT JOIN t2 ON t2.t1_id=t1.t1_id

5455

GROUP BY

5456

t1.t1_id

5457

) AS t;

5458

t1_id total_amount

5459

1 100.00

5460

2 200.00

5461

3 0.00

5462

4 400.00

5463

5 0.00

5464

DROP TABLE t3;

5465

DROP TABLE t2;

5466

DROP TABLE t1;

5467

5468

# Bug #52711: Segfault when doing EXPLAIN SELECT with

5469

# union...order by (select... where...)

5470

5471

CREATE TABLE t1 (a VARCHAR(10), FULLTEXT KEY a (a));

5472

INSERT INTO t1 VALUES (1),(2);

5473

CREATE TABLE t2 (b INT);

5474

INSERT INTO t2 VALUES (1),(2);

5475

# Should not crash

5476

EXPLAIN

5477

SELECT * FROM t2 UNION SELECT * FROM t2

5478

ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE));

5479

# Should not crash

5480

SELECT * FROM t2 UNION SELECT * FROM t2

5481

ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE));

5482

DROP TABLE t1,t2;

5483

5484

# Bug #58818: Incorrect result for IN/ANY subquery

5485

# with HAVING condition

5486

5487

CREATE TABLE t1(i INT);

5488

INSERT INTO t1 VALUES (1), (2), (3);

5489

CREATE TABLE t1s(i INT);

5490

INSERT INTO t1s VALUES (10), (20), (30);

5491

CREATE TABLE t2s(i INT);

5492

INSERT INTO t2s VALUES (100), (200), (300);

5493

SELECT * FROM t1

5494

WHERE t1.i NOT IN

5495

(

5496

SELECT STRAIGHT_JOIN t2s.i

5497

FROM

5498

t1s LEFT OUTER JOIN t2s ON t2s.i = t1s.i

5499

HAVING t2s.i = 999

5500

);

5501

5502

5503

5504

5505

SELECT * FROM t1

5506

WHERE t1.I IN

5507

(

5508

SELECT STRAIGHT_JOIN t2s.i

5509

FROM

5510

t1s LEFT OUTER JOIN t2s ON t2s.i = t1s.i

5511

HAVING t2s.i = 999

5512

) IS UNKNOWN;

5513

5514

SELECT * FROM t1

5515

WHERE NOT t1.I = ANY

5516

(

5517

SELECT STRAIGHT_JOIN t2s.i

5518

FROM

5519

t1s LEFT OUTER JOIN t2s ON t2s.i = t1s.i

5520

HAVING t2s.i = 999

5521

);

5522

5523

5524

5525

5526

SELECT * FROM t1

5527

WHERE t1.i = ANY (

5528

SELECT STRAIGHT_JOIN t2s.i

5529

FROM

5530

t1s LEFT OUTER JOIN t2s ON t2s.i = t1s.i

5531

HAVING t2s.i = 999

5532

) IS UNKNOWN;

5533

5534

DROP TABLE t1,t1s,t2s;

5535

# LP BUG#675248 - select->prep_where references on freed memory

5536

CREATE TABLE t1 (a int, b int);

5537

insert into t1 values (1,1),(0,0);

5538

CREATE TABLE t2 (c int);

5539

insert into t2 values (1),(2);

5540

prepare stmt1 from "select sum(a),(select sum(c) from t2 where table1.b) as sub

5541

from t1 as table1 group by sub";

5542

execute stmt1;

5543

sum(a) sub

5544

0 NULL

5545

1 3

5546

deallocate prepare stmt1;

5547

prepare stmt1 from "select sum(a),(select sum(c) from t2 having table1.b) as sub

5548

from t1 as table1";

5549

execute stmt1;

5550

sum(a) sub

5551

1 3

5552

deallocate prepare stmt1;

5553

drop table t1,t2;

5554

5555

# Bug LP#693935/#58727: Assertion failure with

5556

# a single row subquery returning more than one row

5557

5558

create table t1 (a char(1) charset utf8);

5559

insert into t1 values ('a'), ('b');

5560

create table t2 (a binary(1));

5561

insert into t2 values ('x'), ('y');

5562

select * from t2 where a=(select a from t1) and a='x';

5563

ERROR 21000: Subquery returns more than 1 row

5564

drop table t1,t2;

5565

End of 5.1 tests

5566

5567

# Bug #11765713 58705:

5568

# OPTIMIZER LET ENGINE DEPEND ON UNINITIALIZED VALUES

5569

# CREATED BY OPT_SUM_QUERY

5570

5571

CREATE TABLE t1(a INT NOT NULL, KEY (a));

5572

INSERT INTO t1 VALUES (0), (1);

5573

SELECT 1 as foo FROM t1 WHERE a < SOME

5574

(SELECT a FROM t1 WHERE a <=>

5575

(SELECT a FROM t1)

5576

);

5577

ERROR 21000: Subquery returns more than 1 row

5578

SELECT 1 as foo FROM t1 WHERE a < SOME

5579

(SELECT a FROM t1 WHERE a <=>

5580

(SELECT a FROM t1 where a is null)

5581

);

5582

foo

5583

DROP TABLE t1;

5584

5585

# Bug #57704: Cleanup code dies with void TABLE::set_keyread(bool):

5586

# Assertion `file' failed.

5587

5588

CREATE TABLE t1 (a INT);

5589

SELECT 1 FROM

5590

(SELECT ROW(

5591

(SELECT 1 FROM t1 RIGHT JOIN

5592

(SELECT 1 FROM t1, t1 t2) AS d ON 1),

5593

1) FROM t1) AS e;

5594

ERROR 21000: Operand should contain 1 column(s)

5595

DROP TABLE t1;

5596

5597

# Bug#13721076 CRASH WITH TIME TYPE/TIMESTAMP() AND WARNINGS IN SUBQUERY

5598

5599

CREATE TABLE t1(a TIME NOT NULL);

5600

INSERT INTO t1 VALUES ('00:00:32');

5601

SELECT 1 FROM t1 WHERE a >

5602

(SELECT timestamp(a) AS a FROM t1);

5603

5604

DROP TABLE t1;

5605

5606

# No BUG#, a case brought from 5.2's innodb_mysql_lock.test

5607

5608

create table t1 (i int not null primary key);

5609

insert into t1 values (1),(2),(3),(4),(5);

5610

create table t2 (j int not null primary key);

5611

insert into t2 values (1),(2),(3),(4),(5);

5612

create table t3 (k int not null primary key);

5613

insert into t3 values (1),(2),(3);

5614

create view v2 as select t2.j as j from t2 where t2.j in (select t1.i from t1);

5615

select * from t3 where k in (select j from v2);

5616

5617

5618

5619

5620

drop table t1,t2,t3;

5621

drop view v2;

5622

5623

# Bug#52068: Optimizer generates invalid semijoin materialization plan

5624

5625

drop table if exists ot1, ot2, it1, it2;

5626

CREATE TABLE ot1(a INTEGER);

5627

INSERT INTO ot1 VALUES(5), (8);

5628

CREATE TABLE it2(a INTEGER);

5629

INSERT INTO it2 VALUES(9), (5), (1), (8);

5630

CREATE TABLE it3(a INTEGER);

5631

INSERT INTO it3 VALUES(7), (1), (0), (5), (1), (4);

5632

CREATE TABLE ot4(a INTEGER);

5633

INSERT INTO ot4 VALUES(1), (3), (5), (7), (9), (7), (3), (1);

5634

SELECT * FROM ot1,ot4

5635

WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a

5636

FROM it2,it3);

5637

a a

5638

5 1

5639

8 1

5640

5 5

5641

8 5

5642

5 7

5643

8 7

5644

5 7

5645

8 7

5646

5 1

5647

8 1

5648

explain SELECT * FROM ot1,ot4

5649

WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a

5650

FROM it2,it3);

5651

id select_type table type possible_keys key key_len ref rows Extra

5652

1 PRIMARY ot1 ALL NULL NULL NULL NULL 2

5653

1 PRIMARY ot4 ALL NULL NULL NULL NULL 8 Using join buffer (flat, BNL join)

5654

1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 8 func,func 1

5655

2 MATERIALIZED it2 ALL NULL NULL NULL NULL 4

5656

2 MATERIALIZED it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join)

5657

DROP TABLE IF EXISTS ot1, ot4, it2, it3;

5658

5659

# Bug#729039: NULL keys used to evaluate subquery

5660

5661

CREATE TABLE t1 (a int) ;

5662

INSERT INTO t1 VALUES (NULL), (1), (NULL), (2);

5663

CREATE TABLE t2 (a int, INDEX idx(a)) ;

5664

INSERT INTO t2 VALUES (NULL), (1), (NULL);

5665

SELECT * FROM t1

5666

WHERE EXISTS (SELECT a FROM t2 USE INDEX () WHERE t2.a = t1.a);

5667

5668

5669

EXPLAIN

5670

SELECT * FROM t1

5671

WHERE EXISTS (SELECT a FROM t2 USE INDEX() WHERE t2.a = t1.a);

5672

id select_type table type possible_keys key key_len ref rows Extra

5673

1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where

5674

2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where

5675

SELECT * FROM t1

5676

WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a);

5677

5678

5679

EXPLAIN

5680

SELECT * FROM t1

5681

WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a);

5682

id select_type table type possible_keys key key_len ref rows Extra

5683

1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where

5684

2 DEPENDENT SUBQUERY t2 ref idx idx 5 test.t1.a 2 Using index

5685

DROP TABLE t1,t2;

5686

5687

# BUG#752992: Wrong results for a subquery with 'semijoin=on'

5688

5689

CREATE TABLE t1 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL);

5690

INSERT INTO t1 VALUES (11,0);

5691

INSERT INTO t1 VALUES (12,5);

5692

INSERT INTO t1 VALUES (15,0);

5693

CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL);

5694

INSERT INTO t2 VALUES (11,1);

5695

INSERT INTO t2 VALUES (12,2);

5696

INSERT INTO t2 VALUES (15,4);

5697

SET @save_join_cache_level=@@join_cache_level;

5698

SET join_cache_level=0;

5699

EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1);

5700

id select_type table type possible_keys key key_len ref rows Extra

5701

1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 3

5702

1 PRIMARY it eq_ref PRIMARY PRIMARY 4 test.t1.pk 1 Using index

5703

1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(it)

5704

SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1);

5705

pk i

5706

11 0

5707

12 5

5708

15 0

5709

SET join_cache_level=@save_join_cache_level;

5710

DROP table t1,t2;

5711

5712

# Bug#751350: crash with pushed condition for outer references when

5713

# there should be none of such conditions

5714

5715

CREATE TABLE t1 (a int, b int) ;

5716

INSERT INTO t1 VALUES (0,0),(0,0);

5717

set @optimizer_switch_save=@@optimizer_switch;

5718

set @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=on';

5719

EXPLAIN

5720

SELECT b FROM t1

5721

WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a )

5722

GROUP BY b;

5723

id select_type table type possible_keys key key_len ref rows Extra

5724

1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort

5725

2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where

5726

SELECT b FROM t1

5727

WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a )

5728

GROUP BY b;

5729

5730

5731

set @@optimizer_switch=@optimizer_switch_save;

5732

DROP TABLE t1;

5733

5734

# Bug #11765713 58705:

5735

# OPTIMIZER LET ENGINE DEPEND ON UNINITIALIZED VALUES

5736

# CREATED BY OPT_SUM_QUERY

5737

5738

CREATE TABLE t1(a INT NOT NULL, KEY (a));

5739

INSERT INTO t1 VALUES (0), (1);

5740

SELECT 1 as foo FROM t1 WHERE a < SOME

5741

(SELECT a FROM t1 WHERE a <=>

5742

(SELECT a FROM t1)

5743

);

5744

ERROR 21000: Subquery returns more than 1 row

5745

SELECT 1 as foo FROM t1 WHERE a < SOME

5746

(SELECT a FROM t1 WHERE a <=>

5747

(SELECT a FROM t1 where a is null)

5748

);

5749

foo

5750

DROP TABLE t1;

5751

CREATE TABLE t1 (a int(11), b varchar(1));

5752

INSERT INTO t1 VALUES (2,NULL),(5,'d'),(7,'g');

5753

SELECT a FROM t1 WHERE b < ANY ( SELECT b FROM t1 GROUP BY b );

5754

5755

5756

SELECT a FROM t1 WHERE b < ANY ( SELECT b FROM t1 );

5757

5758

5759

SELECT a FROM t1 WHERE b > ANY ( SELECT b FROM t1 GROUP BY b );

5760

5761

5762

SELECT a FROM t1 WHERE b > ANY ( SELECT b FROM t1 );

5763

5764

5765

SELECT a FROM t1 WHERE b <= ANY ( SELECT b FROM t1 GROUP BY b );

5766

5767

5768

5769

SELECT a FROM t1 WHERE b <= ANY ( SELECT b FROM t1 );

5770

5771

5772

5773

SELECT a FROM t1 WHERE b >= ANY ( SELECT b FROM t1 GROUP BY b );

5774

5775

5776

5777

SELECT a FROM t1 WHERE b >= ANY ( SELECT b FROM t1 );

5778

5779

5780

5781

SELECT a FROM t1 WHERE b = ANY ( SELECT b FROM t1 );

5782

5783

5784

5785

SELECT a FROM t1 WHERE b = ANY ( SELECT b FROM t1 GROUP BY b );

5786

5787

5788

5789

SELECT a FROM t1 WHERE b <> ANY ( SELECT b FROM t1 );

5790

5791

5792

5793

SELECT a FROM t1 WHERE b <> ANY ( SELECT b FROM t1 GROUP BY b );

5794

5795

5796

5797

SELECT a FROM t1 WHERE b < ALL ( SELECT b FROM t1 GROUP BY b );

5798

5799

SELECT a FROM t1 WHERE b < ALL ( SELECT b FROM t1 );

5800

5801

SELECT a FROM t1 WHERE b > ALL ( SELECT b FROM t1 GROUP BY b );

5802

5803

SELECT a FROM t1 WHERE b > ALL ( SELECT b FROM t1 );

5804

5805

SELECT a FROM t1 WHERE b <= ALL ( SELECT b FROM t1 GROUP BY b );

5806

5807

SELECT a FROM t1 WHERE b <= ALL ( SELECT b FROM t1 );

5808

5809

SELECT a FROM t1 WHERE b >= ALL ( SELECT b FROM t1 GROUP BY b );

5810

5811

SELECT a FROM t1 WHERE b >= ALL ( SELECT b FROM t1 );

5812

5813

SELECT a FROM t1 WHERE b = ALL ( SELECT b FROM t1 );

5814

5815

SELECT a FROM t1 WHERE b = ALL ( SELECT b FROM t1 GROUP BY b );

5816

5817

SELECT a FROM t1 WHERE b <> ALL ( SELECT b FROM t1 );

5818

5819

SELECT a FROM t1 WHERE b <> ALL ( SELECT b FROM t1 GROUP BY b );

5820

5821

delete from t1;

5822

INSERT INTO t1 VALUES (2,NULL),(5,'d'),(7,'g');

5823

SELECT a FROM t1 WHERE b < ANY ( SELECT b FROM t1 GROUP BY b );

5824

5825

5826

SELECT a FROM t1 WHERE b < ANY ( SELECT b FROM t1 );

5827

5828

5829

SELECT a FROM t1 WHERE b > ANY ( SELECT b FROM t1 GROUP BY b );

5830

5831

5832

SELECT a FROM t1 WHERE b > ANY ( SELECT b FROM t1 );

5833

5834

5835

SELECT a FROM t1 WHERE b <= ANY ( SELECT b FROM t1 GROUP BY b );

5836

5837

5838

5839

SELECT a FROM t1 WHERE b <= ANY ( SELECT b FROM t1 );

5840

5841

5842

5843

SELECT a FROM t1 WHERE b >= ANY ( SELECT b FROM t1 GROUP BY b );

5844

5845

5846

5847

SELECT a FROM t1 WHERE b >= ANY ( SELECT b FROM t1 );

5848

5849

5850

5851

SELECT a FROM t1 WHERE b = ANY ( SELECT b FROM t1 );

5852

5853

5854

5855

SELECT a FROM t1 WHERE b = ANY ( SELECT b FROM t1 GROUP BY b );

5856

5857

5858

5859

SELECT a FROM t1 WHERE b <> ANY ( SELECT b FROM t1 );

5860

5861

5862

5863

SELECT a FROM t1 WHERE b <> ANY ( SELECT b FROM t1 GROUP BY b );

5864

5865

5866

5867

SELECT a FROM t1 WHERE b < ALL ( SELECT b FROM t1 GROUP BY b );

5868

5869

SELECT a FROM t1 WHERE b < ALL ( SELECT b FROM t1 );

5870

5871

SELECT a FROM t1 WHERE b > ALL ( SELECT b FROM t1 GROUP BY b );

5872

5873

SELECT a FROM t1 WHERE b > ALL ( SELECT b FROM t1 );

5874

5875

SELECT a FROM t1 WHERE b <= ALL ( SELECT b FROM t1 GROUP BY b );

5876

5877

SELECT a FROM t1 WHERE b <= ALL ( SELECT b FROM t1 );

5878

5879

SELECT a FROM t1 WHERE b >= ALL ( SELECT b FROM t1 GROUP BY b );

5880

5881

SELECT a FROM t1 WHERE b >= ALL ( SELECT b FROM t1 );

5882

5883

SELECT a FROM t1 WHERE b = ALL ( SELECT b FROM t1 );

5884

5885

SELECT a FROM t1 WHERE b = ALL ( SELECT b FROM t1 GROUP BY b );

5886

5887

SELECT a FROM t1 WHERE b <> ALL ( SELECT b FROM t1 );

5888

5889

SELECT a FROM t1 WHERE b <> ALL ( SELECT b FROM t1 GROUP BY b );

5890

5891

drop table t1;

5892

5893

# Fix of lp:780386 (NULL left part with empty ALL subquery).

5894

5895

CREATE TABLE t1 ( f11 int) ;

5896

INSERT IGNORE INTO t1 VALUES (0),(0);

5897

CREATE TABLE t2 ( f3 int, f10 int, KEY (f10,f3)) ;

5898

INSERT IGNORE INTO t2 VALUES (NULL,NULL),(5,0);

5899

DROP TABLE IF EXISTS t3;

5900

Warnings:

5901

Note 1051 Unknown table 't3'

5902

CREATE TABLE t3 ( f3 int) ;

5903

INSERT INTO t3 VALUES (0),(0);

5904

SELECT a1.f3 AS r FROM t2 AS a1 , t1 WHERE a1.f3 < ALL ( SELECT f3 FROM t3 WHERE f3 = 1 ) ;

5905

5906

NULL

5907

5908

NULL

5909

5910

DROP TABLE t1, t2, t3;

5911

5912

# Bug#12763207 - ASSERT IN SUBSELECT::SINGLE_VALUE_TRANSFORMER

5913

5914

CREATE TABLE t1(a1 int);

5915

INSERT INTO t1 VALUES (1),(2);

5916

CREATE TABLE t2(a1 int);

5917

INSERT INTO t2 VALUES (3);

5918

SELECT @@session.sql_mode INTO @old_sql_mode;

5919

SET SESSION sql_mode='ONLY_FULL_GROUP_BY';

5920

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT 2 FROM t2);

5921

5922

5923

5924

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT 2.0 FROM t2);

5925

5926

5927

5928

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT 'a' FROM t2);

5929

5930

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT a1 FROM t2);

5931

5932

5933

5934

SET SESSION sql_mode=@old_sql_mode;

5935

DROP TABLE t1, t2;

5936

create table t2(i int);

5937

insert into t2 values(0);

5938

SELECT @@session.sql_mode INTO @old_sql_mode;

5939

SET SESSION sql_mode='ONLY_FULL_GROUP_BY';

5940

CREATE VIEW v1 AS

5941

SELECT 'f' FROM t2 UNION SELECT 'x' FROM t2

5942

;

5943

CREATE TABLE t1 (

5944

pk int NOT NULL,

5945

col_varchar_key varchar(1) DEFAULT NULL,

5946

PRIMARY KEY (pk),

5947

KEY col_varchar_key (col_varchar_key)

5948

);

5949

SELECT t1.pk

5950

FROM t1

5951

WHERE t1.col_varchar_key < ALL ( SELECT * FROM v1 )

5952

;

5953

5954

SET SESSION sql_mode=@old_sql_mode;

5955

drop table t2, t1;

5956

drop view v1;

5957

5958

# BUG#50257: Missing info in REF column of the EXPLAIN

5959

# lines for subselects

5960

5961

CREATE TABLE t1 (a INT, b INT, INDEX (a));

5962

INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);

5963

EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;

5964

id select_type table type possible_keys key key_len ref rows Extra

5965

1 SIMPLE t1 ref a a 5 const 1

5966

EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);

5967

id select_type table type possible_keys key key_len ref rows Extra

5968

1 PRIMARY t1 ALL NULL NULL NULL NULL 4

5969

2 SUBQUERY t1 ref a a 5 const 1 Using index

5970

DROP TABLE t1;

5971

5972

# BUG#12616253 - WRONG RESULT WITH EXISTS(SUBQUERY) (MISSING ROWS)

5973

# (duplicate of LP bug #888456)

5974

5975

CREATE TABLE t1 (f1 varchar(1));

5976

INSERT INTO t1 VALUES ('v'),('s');

5977

CREATE TABLE t2 (f1_key varchar(1), KEY (f1_key));

5978

INSERT INTO t2 VALUES ('j'),('v'),('c'),('m'),('d'),

5979

('d'),('y'),('t'),('d'),('s');

5980

EXPLAIN

5981

SELECT table1.f1, table2.f1_key FROM t1 AS table1, t2 AS table2

5982

WHERE EXISTS (SELECT DISTINCT f1_key FROM t2

5983

WHERE f1_key != table2.f1_key AND f1_key >= table1.f1);

5984

id select_type table type possible_keys key key_len ref rows Extra

5985

1 PRIMARY table1 ALL NULL NULL NULL NULL 2

5986

1 PRIMARY table2 index NULL f1_key 4 NULL 10 Using where; Using index; Using join buffer (flat, BNL join)

5987

2 DEPENDENT SUBQUERY t2 index f1_key f1_key 4 NULL 10 Using where; Using index

5988

SELECT table1.f1, table2.f1_key FROM t1 AS table1, t2 AS table2

5989

WHERE EXISTS (SELECT DISTINCT f1_key FROM t2

5990

WHERE f1_key != table2.f1_key AND f1_key >= table1.f1);

5991

f1 f1_key

5992

v j

5993

s j

5994

v v

5995

s v

5996

v c

5997

s c

5998

v m

5999

s m

6000

v d

6001

s d

6002

v d

6003

s d

6004

v y

6005

s y

6006

v t

6007

s t

6008

v d

6009

s d

6010

v s

6011

s s

6012

DROP TABLE t1,t2;

6013

6014

# LP bug 919427: EXPLAIN for a query over a single-row table

6015

# with IN subquery in WHERE condition

6016

6017

CREATE TABLE ot (

6018

col_int_nokey int(11),

6019

col_varchar_nokey varchar(1)

6020

) ;

6021

INSERT INTO ot VALUES (1,'x');

6022

CREATE TABLE it1(

6023

col_int_key int(11),

6024

col_varchar_key varchar(1),

6025

KEY idx_cvk_cik (col_varchar_key,col_int_key)

6026

);

6027

INSERT INTO it1 VALUES (NULL,'x'), (NULL,'f');

6028

CREATE TABLE it2 (

6029

col_int_key int(11),

6030

col_varchar_key varchar(1),

6031

col_varchar_key2 varchar(1),

6032

KEY idx_cvk_cvk2_cik (col_varchar_key, col_varchar_key2, col_int_key),

6033

KEY idx_cvk_cik (col_varchar_key, col_int_key)

6034

);

6035

INSERT INTO it2 VALUES (NULL,'x','x'), (NULL,'f','f');

6036

EXPLAIN

6037

SELECT col_int_nokey FROM ot

6038

WHERE col_varchar_nokey IN

6039

(SELECT col_varchar_key FROM it1 WHERE col_int_key IS NULL);

6040

id select_type table type possible_keys key key_len ref rows Extra

6041

1 PRIMARY ot system NULL NULL NULL NULL 1

6042

1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1

6043

2 MATERIALIZED it1 ref idx_cvk_cik idx_cvk_cik 9 const,const 1 Using where; Using index

6044

SELECT col_int_nokey FROM ot

6045

WHERE col_varchar_nokey IN

6046

(SELECT col_varchar_key FROM it1 WHERE col_int_key IS NULL);

6047

col_int_nokey

6048

6049

EXPLAIN

6050

SELECT col_int_nokey FROM ot

6051

WHERE (col_varchar_nokey, 'x') IN

6052

(SELECT col_varchar_key, col_varchar_key2 FROM it2);

6053

id select_type table type possible_keys key key_len ref rows Extra

6054

1 PRIMARY ot system NULL NULL NULL NULL 1

6055

1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 8 func,func 1

6056

2 MATERIALIZED it2 ref idx_cvk_cvk2_cik,idx_cvk_cik idx_cvk_cvk2_cik 8 const,const 1 Using where; Using index

6057

SELECT col_int_nokey FROM ot

6058

WHERE (col_varchar_nokey, 'x') IN

6059

(SELECT col_varchar_key, col_varchar_key2 FROM it2);

6060

col_int_nokey

6061

6062

DROP TABLE ot,it1,it2;

6063

6064

# MDEV-746

6065

# Bug#13651009 WRONG RESULT FROM DERIVED TABLE IF THE SUBQUERY

6066

# HAS AN EMPTY RESULT

6067

6068

CREATE TABLE t1 (

6069

pk int NOT NULL,

6070

col_int_nokey int NOT NULL,

6071

col_int_key int NOT NULL,

6072

col_time_key time NOT NULL,

6073

col_varchar_key varchar(1) NOT NULL,

6074

col_varchar_nokey varchar(1) NOT NULL,

6075

PRIMARY KEY (pk),

6076

KEY col_int_key (col_int_key),

6077

KEY col_time_key (col_time_key),

6078

KEY col_varchar_key (col_varchar_key,col_int_key)

6079

) ENGINE=MyISAM;

6080

CREATE TABLE t2 (

6081

pk int NOT NULL AUTO_INCREMENT,

6082

col_int_nokey int NOT NULL,

6083

col_int_key int NOT NULL,

6084

col_time_key time NOT NULL,

6085

col_varchar_key varchar(1) NOT NULL,

6086

col_varchar_nokey varchar(1) NOT NULL,

6087

PRIMARY KEY (pk),

6088

KEY col_int_key (col_int_key),

6089

KEY col_time_key (col_time_key),

6090

KEY col_varchar_key (col_varchar_key,col_int_key)

6091

) ENGINE=MyISAM;

6092

INSERT INTO t2 VALUES (1,4,4,'00:00:00','b','b');

6093

SET @var2:=4, @var3:=8;

6094

6095

Testcase without inner subquery

6096

EXPLAIN SELECT @var3:=12, sq4_alias1.*

6097

FROM t1 AS sq4_alias1

6098

WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR

6099

sq4_alias1.col_varchar_key = @var3;

6100

id select_type table type possible_keys key key_len ref rows Extra

6101

1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

6102

SELECT @var3:=12, sq4_alias1.*

6103

FROM t1 AS sq4_alias1

6104

WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR

6105

sq4_alias1.col_varchar_key = @var3;

6106

@var3:=12 pk col_int_nokey col_int_key col_time_key col_varchar_key col_varchar_nokey

6107

SELECT @var3;

6108

@var3

6109

6110

EXPLAIN SELECT * FROM ( SELECT @var3:=12, sq4_alias1.*

6111

FROM t1 AS sq4_alias1

6112

WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR

6113

sq4_alias1.col_varchar_key = @var3 ) AS alias3;

6114

id select_type table type possible_keys key key_len ref rows Extra

6115

1 SIMPLE <derived2> system NULL NULL NULL NULL 0 const row not found

6116

2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table

6117

SELECT * FROM ( SELECT @var3:=12, sq4_alias1.*

6118

FROM t1 AS sq4_alias1

6119

WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR

6120

sq4_alias1.col_varchar_key = @var3 ) AS alias3;

6121

@var3:=12 pk col_int_nokey col_int_key col_time_key col_varchar_key col_varchar_nokey

6122

SELECT @var3;

6123

@var3

6124

6125

6126

Testcase with inner subquery; crashed WL#6095

6127

SET @var3=8;

6128

EXPLAIN SELECT sq4_alias1.*

6129

FROM t1 AS sq4_alias1

6130

WHERE (sq4_alias1.col_varchar_key , sq4_alias1.col_varchar_nokey)

6131

NOT IN

6132

(SELECT c_sq1_alias1.col_varchar_key AS c_sq1_field1,

6133

c_sq1_alias1.col_varchar_nokey AS c_sq1_field2

6134

FROM t2 AS c_sq1_alias1

6135

WHERE (c_sq1_alias1.col_int_nokey != @var2

6136

OR c_sq1_alias1.pk != @var3));

6137

id select_type table type possible_keys key key_len ref rows Extra

6138

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

6139

2 DEPENDENT SUBQUERY c_sq1_alias1 system PRIMARY NULL NULL NULL 1

6140

SELECT sq4_alias1.*

6141

FROM t1 AS sq4_alias1

6142

WHERE (sq4_alias1.col_varchar_key , sq4_alias1.col_varchar_nokey)

6143

NOT IN

6144

(SELECT c_sq1_alias1.col_varchar_key AS c_sq1_field1,

6145

c_sq1_alias1.col_varchar_nokey AS c_sq1_field2

6146

FROM t2 AS c_sq1_alias1

6147

WHERE (c_sq1_alias1.col_int_nokey != @var2

6148

OR c_sq1_alias1.pk != @var3));

6149

pk col_int_nokey col_int_key col_time_key col_varchar_key col_varchar_nokey

6150

EXPLAIN SELECT * FROM ( SELECT sq4_alias1.*

6151

FROM t1 AS sq4_alias1

6152

WHERE (sq4_alias1.col_varchar_key , sq4_alias1.col_varchar_nokey)

6153

NOT IN

6154

(SELECT c_sq1_alias1.col_varchar_key AS c_sq1_field1,

6155

c_sq1_alias1.col_varchar_nokey AS c_sq1_field2

6156

FROM t2 AS c_sq1_alias1

6157

WHERE (c_sq1_alias1.col_int_nokey != @var2

6158

OR c_sq1_alias1.pk != @var3)) ) AS alias3;

6159

id select_type table type possible_keys key key_len ref rows Extra

6160

1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

6161

3 DEPENDENT SUBQUERY c_sq1_alias1 system PRIMARY NULL NULL NULL 1

6162

SELECT * FROM ( SELECT sq4_alias1.*

6163

FROM t1 AS sq4_alias1

6164

WHERE (sq4_alias1.col_varchar_key , sq4_alias1.col_varchar_nokey)

6165

NOT IN

6166

(SELECT c_sq1_alias1.col_varchar_key AS c_sq1_field1,

6167

c_sq1_alias1.col_varchar_nokey AS c_sq1_field2

6168

FROM t2 AS c_sq1_alias1

6169

WHERE (c_sq1_alias1.col_int_nokey != @var2

6170

OR c_sq1_alias1.pk != @var3)) ) AS alias3;

6171

pk col_int_nokey col_int_key col_time_key col_varchar_key col_varchar_nokey

6172

DROP TABLE t1,t2;

6173

End of 5.2 tests

6174

6175

# BUG#779885: Crash in eliminate_item_equal with materialization=on in

6176

6177

CREATE TABLE t1 ( f1 int );

6178

INSERT INTO t1 VALUES (19), (20);

6179

CREATE TABLE t2 ( f10 varchar(32) );

6180

INSERT INTO t2 VALUES ('c'),('d');

6181

CREATE TABLE t3 ( f10 varchar(32) );

6182

INSERT INTO t3 VALUES ('a'),('b');

6183

SELECT *

6184

FROM t1

6185

WHERE

6186

( 't' ) IN (

6187

SELECT t3.f10

6188

FROM t3

6189

JOIN t2

6190

ON t2.f10 = t3.f10

6191

);

6192

6193

DROP TABLE t1,t2,t3;

6194

6195

# BUG lp:813473: Wrong result with outer join + NOT IN subquery

6196

# This bug is a duplicate of Bug#11764086 whose test case is added below

6197

6198

CREATE TABLE t1 (c int) ;

6199

INSERT INTO t1 VALUES (5),(6);

6200

CREATE TABLE t2 (a int, b int) ;

6201

INSERT INTO t2 VALUES (20,9),(20,9);

6202

create table t3 (d int, e int);

6203

insert into t3 values (2, 9), (3,10);

6204

SET @save_optimizer_switch=@@optimizer_switch;

6205

SET optimizer_switch='outer_join_with_cache=off';

6206

EXPLAIN

6207

SELECT t2.b , t1.c

6208

FROM t2 LEFT JOIN t1 ON t1.c < 3

6209

WHERE (t2.b , t1.c) NOT IN (SELECT * from t3);

6210

id select_type table type possible_keys key key_len ref rows Extra

6211

1 PRIMARY t2 ALL NULL NULL NULL NULL 2

6212

1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where

6213

2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where

6214

SELECT t2.b , t1.c

6215

FROM t2 LEFT JOIN t1 ON t1.c < 3

6216

WHERE (t2.b, t1.c) NOT IN (SELECT * from t3);

6217

b c

6218

9 NULL

6219

9 NULL

6220

SET optimizer_switch=@save_optimizer_switch;

6221

drop table t1, t2, t3;

6222

6223

# BUG#50257: Missing info in REF column of the EXPLAIN

6224

# lines for subselects

6225

6226

CREATE TABLE t1 (a INT, b INT, INDEX (a));

6227

INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);

6228

6229

set @tmp_optimizer_switch=@@optimizer_switch;

6230

set optimizer_switch='derived_merge=off,derived_with_keys=off';

6231

EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;

6232

id select_type table type possible_keys key key_len ref rows Extra

6233

1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2

6234

2 DERIVED t1 ref a a 5 const 1

6235

set optimizer_switch=@tmp_optimizer_switch;

6236

6237

EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);

6238

id select_type table type possible_keys key key_len ref rows Extra

6239

1 PRIMARY t1 ALL NULL NULL NULL NULL 4

6240

2 SUBQUERY t1 ref a a 5 const 1 Using index

6241

6242

DROP TABLE t1;

6243

6244

# Bug#11764086: Null left operand to NOT IN in WHERE clause

6245

# behaves differently than real NULL

6246

6247

CREATE TABLE parent (id int);

6248

INSERT INTO parent VALUES (1), (2);

6249

CREATE TABLE child (parent_id int, other int);

6250

INSERT INTO child VALUES (1,NULL);

6251

# Offending query (c.parent_id is NULL for null-complemented rows only)

6252

SELECT p.id, c.parent_id

6253

FROM parent p

6254

LEFT JOIN child c

6255

ON p.id = c.parent_id

6256

WHERE c.parent_id NOT IN (

6257

SELECT parent_id

6258

FROM child

6259

WHERE parent_id = 3

6260

);

6261

id parent_id

6262

1 1

6263

2 NULL

6264

# Some syntactic variations with IS FALSE and IS NOT TRUE

6265

SELECT p.id, c.parent_id

6266

FROM parent p

6267

LEFT JOIN child c

6268

ON p.id = c.parent_id

6269

WHERE c.parent_id IN (

6270

SELECT parent_id

6271

FROM child

6272

WHERE parent_id = 3

6273

) IS NOT TRUE;

6274

id parent_id

6275

1 1

6276

2 NULL

6277

SELECT p.id, c.parent_id

6278

FROM parent p

6279

LEFT JOIN child c

6280

ON p.id = c.parent_id

6281

WHERE c.parent_id IN (

6282

SELECT parent_id

6283

FROM child

6284

WHERE parent_id = 3

6285

) IS FALSE;

6286

id parent_id

6287

1 1

6288

2 NULL

6289

DROP TABLE parent, child;

6290

# End of test for bug#11764086.

6291

6292

# Bug 11765699 - 58690: !TABLE || (!TABLE->READ_SET ||

6293

# BITMAP_IS_SET(TABLE->READ_SET, FIELD_INDEX

6294

6295

CREATE TABLE t1(a INT);

6296

INSERT INTO t1 VALUES (0), (1);

6297

CREATE TABLE t2(

6298

b TEXT,

6299

c INT,

6300

PRIMARY KEY (b(1))

6301

);

6302

INSERT INTO t2 VALUES ('a', 2), ('b', 3);

6303

SELECT 1 FROM t1 WHERE a =

6304

(SELECT 1 FROM t2 WHERE b =

6305

(SELECT 1 FROM t1 t11 WHERE c = 1 OR t1.a = 1 AND 1 = 2)

6306

ORDER BY b

6307

);

6308

6309

SELECT 1 FROM t1 WHERE a =

6310

(SELECT 1 FROM t2 WHERE b =

6311

(SELECT 1 FROM t1 t11 WHERE c = 1 OR t1.a = 1 AND 1 = 2)

6312

GROUP BY b

6313

);

6314

6315

DROP TABLE t1, t2;

6316

6317

# BUG#12616253 - WRONG RESULT WITH EXISTS(SUBQUERY) (MISSING ROWS)

6318

6319

CREATE TABLE t1 (f1 varchar(1));

6320

INSERT INTO t1 VALUES ('v'),('s');

6321

CREATE TABLE t2 (f1_key varchar(1), KEY (f1_key));

6322

INSERT INTO t2 VALUES ('j'),('v'),('c'),('m'),('d'),

6323

('d'),('y'),('t'),('d'),('s');

6324

SELECT table1.f1, table2.f1_key

6325

FROM t1 AS table1, t2 AS table2

6326

WHERE EXISTS

6327

(

6328

SELECT DISTINCT f1_key

6329

FROM t2

6330

WHERE f1_key != table2.f1_key AND f1_key >= table1.f1 );

6331

f1 f1_key

6332

v j

6333

s j

6334

v v

6335

s v

6336

v c

6337

s c

6338

v m

6339

s m

6340

v d

6341

s d

6342

v d

6343

s d

6344

v y

6345

s y

6346

v t

6347

s t

6348

v d

6349

s d

6350

v s

6351

s s

6352

explain SELECT table1.f1, table2.f1_key

6353

FROM t1 AS table1, t2 AS table2

6354

WHERE EXISTS

6355

(

6356

SELECT DISTINCT f1_key

6357

FROM t2

6358

WHERE f1_key != table2.f1_key AND f1_key >= table1.f1 );

6359

id select_type table type possible_keys key key_len ref rows Extra

6360

1 PRIMARY table1 ALL NULL NULL NULL NULL 2

6361

1 PRIMARY table2 index NULL f1_key 4 NULL 10 Using where; Using index; Using join buffer (flat, BNL join)

6362

2 DEPENDENT SUBQUERY t2 index f1_key f1_key 4 NULL 10 Using where; Using index

6363

DROP TABLE t1,t2;

6364

6365

# lp:826279: assertion failure with GROUP BY a result of subquery

6366

6367

CREATE TABLE t1 (a int);

6368

INSERT INTO t1 VALUES (0), (0);

6369

CREATE TABLE t2 (a int, b int, c int);

6370

INSERT INTO t2 VALUES (10,7,0), (0,7,0);

6371

CREATE TABLE t3 (a int, b int);

6372

INSERT INTO t3 VALUES (10,7), (0,7);

6373

SELECT SUM(DISTINCT b),

6374

(SELECT t2.a FROM t1 JOIN t2 ON t2.c != 0

6375

WHERE t.a != 0 AND t2.a != 0)

6376

FROM (SELECT * FROM t3) AS t

6377

GROUP BY 2;

6378

SUM(DISTINCT b) (SELECT t2.a FROM t1 JOIN t2 ON t2.c != 0

6379

WHERE t.a != 0 AND t2.a != 0)

6380

7 NULL

6381

SELECT SUM(DISTINCT b),

6382

(SELECT t2.a FROM t1,t2 WHERE t.a != 0 or 1=2 LIMIT 1)

6383

FROM (SELECT * FROM t3) AS t

6384

GROUP BY 2;

6385

SUM(DISTINCT b) (SELECT t2.a FROM t1,t2 WHERE t.a != 0 or 1=2 LIMIT 1)

6386

7 NULL

6387

7 10

6388

DROP TABLE t1,t2,t3;

6389

6390

# Bug#12329653

6391

# EXPLAIN, UNION, PREPARED STATEMENT, CRASH, SQL_FULL_GROUP_BY

6392

6393

CREATE TABLE t1(a1 int);

6394

INSERT INTO t1 VALUES (1),(2);

6395

SELECT @@session.sql_mode INTO @old_sql_mode;

6396

SET SESSION sql_mode='ONLY_FULL_GROUP_BY';

6397

SELECT 1 FROM t1 WHERE 1 < SOME (SELECT a1 FROM t1);

6398

6399

6400

6401

PREPARE stmt FROM

6402

'SELECT 1 UNION ALL

6403

SELECT 1 FROM t1

6404

ORDER BY

6405

(SELECT 1 FROM t1 AS t1_0

6406

WHERE 1 < SOME (SELECT a1 FROM t1)

6407

)' ;

6408

EXECUTE stmt ;

6409

ERROR 21000: Subquery returns more than 1 row

6410

EXECUTE stmt ;

6411

ERROR 21000: Subquery returns more than 1 row

6412

SET SESSION sql_mode=@old_sql_mode;

6413

DEALLOCATE PREPARE stmt;

6414

DROP TABLE t1;

6415

6416

# LP BUG#833777 Performance regression with deeply nested subqueries

6417

6418

create table t1 (a int not null, b char(10) not null);

6419

insert into t1 values (1, 'a');

6420

set @@optimizer_switch='in_to_exists=on,semijoin=off,materialization=off,subquery_cache=off';

6421

select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1)))))))))))))))))))))))))))));

6422

6423

6424

set @@optimizer_switch=@subselect_tmp;

6425

drop table t1;

6426

6427

# LP BUG#894397 Wrong result with in_to_exists, constant table , semijoin=OFF,materialization=OFF

6428

6429

CREATE TABLE t1 (a varchar(3));

6430

INSERT INTO t1 VALUES ('AAA'),('BBB');

6431

CREATE TABLE t2 (a varchar(3));

6432

INSERT INTO t2 VALUES ('CCC');

6433

set @@optimizer_switch='semijoin=off,materialization=off,in_to_exists=on,subquery_cache=off';

6434

SELECT * FROM t1 WHERE t1.a IN (SELECT t2.a FROM t2 WHERE t2.a < 'ZZZ');

6435

6436

set @@optimizer_switch=@subselect_tmp;

6437

drop table t1, t2;

6438

6439

# LP bug #859375: Assertion `0' failed in st_select_lex_unit::optimize

6440

# with view , UNION and prepared statement (rewriting fake_select

6441

# condition).

6442

6443

CREATE TABLE t1 ( f1 int NOT NULL, f4 varchar(1) NOT NULL) ;

6444

INSERT INTO t1 VALUES (6,'d'),(7,'y');

6445

CREATE TABLE t2 ( f1 int NOT NULL, f2 int NOT NULL) ;

6446

INSERT INTO t2 VALUES (10,7);

6447

CREATE VIEW v2 AS SELECT * FROM t2;

6448

PREPARE st1 FROM "

6449

SELECT *

6450

FROM t1

6451

LEFT JOIN v2 ON ( v2.f2 = t1.f1 )

6452

WHERE v2.f1 NOT IN (

6453

SELECT 1 UNION

6454

SELECT 247

6455

)

6456

6457

EXECUTE st1;

6458

f1 f4 f1 f2

6459

7 y 10 7

6460

deallocate prepare st1;

6461

DROP VIEW v2;

6462

DROP TABLE t1,t2;

6463

6464

# LP bug #887458 Crash in subselect_union_engine::no_rows with

6465

# double UNION and join_cache_level=3,8

6466

# (IN/ALL/ANY optimizations should not be applied to fake_select)

6467

CREATE TABLE t2 ( a int, b varchar(1)) ;

6468

INSERT IGNORE INTO t2 VALUES (8,'y'),(8,'y');

6469

CREATE TABLE t1 ( b varchar(1)) ;

6470

INSERT IGNORE INTO t1 VALUES (NULL),(NULL);

6471

set @save_join_cache_level=@@join_cache_level;

6472

SET SESSION join_cache_level=3;

6473

SELECT *

6474

FROM t1, t2

6475

WHERE t2.b IN (

6476

SELECT 'm' UNION

6477

SELECT 'm'

6478

) OR t1.b <> SOME (

6479

SELECT 'v' UNION

6480

SELECT 't'

6481

);

6482

b a b

6483

set @@join_cache_level= @save_join_cache_level;

6484

drop table t1,t2;

6485

6486

# LP bug #885162 Got error 124 from storage engine with UNION inside

6487

# subquery and join_cache_level=3..8

6488

# (IN/ALL/ANY optimizations should not be applied to fake_select)

6489

6490

CREATE TABLE t1 (

6491

f1 varchar(1) DEFAULT NULL

6492

);

6493

INSERT INTO t1 VALUES ('c');

6494

set @save_join_cache_level=@@join_cache_level;

6495

SET SESSION join_cache_level=8;

6496

SELECT * FROM t1 WHERE t1.f1 IN ( SELECT 'k' UNION SELECT 'e' );

6497

6498

set @@join_cache_level= @save_join_cache_level;

6499

drop table t1;

6500

6501

# LP BUG#747278 incorrect values of the NULL (no rows) single

6502

# row subquery requested via element_index() interface

6503

6504

CREATE TABLE t1 (f1a int, f1b int) ;

6505

INSERT IGNORE INTO t1 VALUES (1,1),(2,2);

6506

CREATE TABLE t2 ( f2 int);

6507

INSERT IGNORE INTO t2 VALUES (3),(4);

6508

CREATE TABLE t3 (f3a int default 1, f3b int default 2);

6509

INSERT INTO t3 VALUES (1,1),(2,2);

6510

set @old_optimizer_switch = @@session.optimizer_switch;

6511

set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,subquery_cache=off,semijoin=off';

6512

SELECT (SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) FROM t2;

6513

(SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1)

6514

NULL

6515

NULL

6516

SELECT (SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) FROM t2;

6517

(SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1)

6518

NULL

6519

NULL

6520

SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) FROM t2;

6521

(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1)

6522

NULL

6523

NULL

6524

SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1);

6525

(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1)

6526

NULL

6527

SELECT (SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) FROM t2;

6528

(SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1)

6529

NULL

6530

NULL

6531

SELECT (SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) FROM t2;

6532

(SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1)

6533

NULL

6534

NULL

6535

SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) FROM t2;

6536

(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1)

6537

NULL

6538

NULL

6539

SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1);

6540

(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1)

6541

NULL

6542

set @@session.optimizer_switch=@old_optimizer_switch;

6543

SELECT (SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) FROM t2;

6544

(SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1)

6545

NULL

6546

NULL

6547

SELECT (SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) FROM t2;

6548

(SELECT f3a,f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1)

6549

NULL

6550

NULL

6551

SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) FROM t2;

6552

(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1)

6553

NULL

6554

NULL

6555

SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1);

6556

(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1)

6557

NULL

6558

SELECT (SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) FROM t2;

6559

(SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1)

6560

NULL

6561

NULL

6562

SELECT (SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) FROM t2;

6563

(SELECT f3a,f3a FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1)

6564

NULL

6565

NULL

6566

SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) FROM t2;

6567

(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1)

6568

NULL

6569

NULL

6570

SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1);

6571

(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1)

6572

NULL

6573

select (null, null) = (null, null);

6574

(null, null) = (null, null)

6575

NULL

6576

SELECT (SELECT f3a, f3a FROM t3 where f3a > 3) = (0, 0);

6577

(SELECT f3a, f3a FROM t3 where f3a > 3) = (0, 0)

6578

NULL

6579

drop tables t1,t2,t3;

6580

6581

# LP BUG#825051 Wrong result with date/datetime and subquery with GROUP BY and in_to_exists

6582

6583

CREATE TABLE t1 (a date, KEY (a)) ;

6584

INSERT INTO t1 VALUES ('2009-01-01'),('2009-02-02');

6585

set @old_optimizer_switch = @@optimizer_switch;

6586

SET @@optimizer_switch='semijoin=off,materialization=off,in_to_exists=on,subquery_cache=off';

6587

EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);

6588

id select_type table type possible_keys key key_len ref rows Extra

6589

1 PRIMARY t1 index NULL a 4 NULL 2 Using where; Using index

6590

2 DEPENDENT SUBQUERY t1 index_subquery a a 4 func 2 Using index

6591

SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);

6592

6593

2009-01-01

6594

2009-02-02

6595

SET @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=off,subquery_cache=off';

6596

EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);

6597

id select_type table type possible_keys key key_len ref rows Extra

6598

1 PRIMARY t1 index NULL a 4 NULL 2 Using where; Using index

6599

2 MATERIALIZED t1 index NULL a 4 NULL 2 Using index

6600

SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);

6601

6602

2009-01-01

6603

2009-02-02

6604

set @@optimizer_switch=@old_optimizer_switch;

6605

drop table t1;

6606

6607

# LP BUG#908269 incorrect condition in case of subqueries depending

6608

# on constant tables

6609

6610

CREATE TABLE t1 ( a INT );

6611

INSERT INTO t1 VALUES (1),(5);

6612

CREATE TABLE t2 ( b INT ) ENGINE=MyISAM;

6613

INSERT INTO t2 VALUES (1);

6614

CREATE TABLE t3 ( c INT );

6615

INSERT INTO t3 VALUES (4),(5);

6616

SET optimizer_switch='subquery_cache=off';

6617

SELECT ( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) ) FROM t1;

6618

( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) )

6619

6620

NULL

6621

SELECT ( SELECT b FROM t2 WHERE b = a OR b * 0) FROM t1;

6622

( SELECT b FROM t2 WHERE b = a OR b * 0)

6623

6624

NULL

6625

SELECT ( SELECT b FROM t2 WHERE b = a OR rand() * 0) FROM t1;

6626

( SELECT b FROM t2 WHERE b = a OR rand() * 0)

6627

6628

NULL

6629

drop table t1,t2,t3;

6630

set optimizer_switch=@subselect_tmp;

6631

6632

# LP BUG#905353 Wrong non-empty result with a constant table,

6633

# aggregate function in subquery, MyISAM or Aria

6634

6635

CREATE TABLE t1 ( a INT ) ENGINE=MyISAM;

6636

INSERT INTO t1 VALUES (1);

6637

SELECT a FROM t1 WHERE ( SELECT MIN(a) = 100 );

6638

6639

drop table t1;

6640

6641

# LP BUG#985667 Wrong result with subquery in SELECT clause, and constant table in

6642

# main query and implicit grouping

6643

6644

CREATE TABLE t1 (f1 int) engine=MyISAM;

6645

INSERT INTO t1 VALUES (7),(8);

6646

CREATE TABLE t2 (f2 int, f3 varchar(1)) engine=MyISAM;

6647

INSERT INTO t2 VALUES (3,'f');

6648

EXPLAIN

6649

SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;

6650

id select_type table type possible_keys key key_len ref rows Extra

6651

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

6652

2 SUBQUERY t1 ALL NULL NULL NULL NULL 2

6653

SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;

6654

COUNT(f1) f4

6655

0 NULL

6656

EXPLAIN

6657

SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;

6658

id select_type table type possible_keys key key_len ref rows Extra

6659

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

6660

2 SUBQUERY t1 ALL NULL NULL NULL NULL 2

6661

SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;

6662

COUNT(f1) f4

6663

0 0

6664

EXPLAIN

6665

SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;

6666

id select_type table type possible_keys key key_len ref rows Extra

6667

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

6668

2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where

6669

SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;

6670

COUNT(f1) f4

6671

0 1

6672

EXPLAIN

6673

SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;

6674

id select_type table type possible_keys key key_len ref rows Extra

6675

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables

6676

2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where

6677

SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;

6678

COUNT(f1) f4

6679

0 0

6680

drop table t1,t2;

6681

6682

# LP BUG#1002079 Server crashes in Item_singlerow_subselect::val_int with constant table,

6683

# HAVING, UNION in subquery

6684

6685

CREATE TABLE t1 (a INT);

6686

INSERT INTO t1 VALUES (7),(0);

6687

CREATE TABLE t2 (b INT);

6688

EXPLAIN

6689

SELECT SUM(a) AS f1, a AS f2 FROM (t1, t2) HAVING f2 >= ALL (SELECT 4 UNION SELECT 5) AND f1 = 7;

6690

id select_type table type possible_keys key key_len ref rows Extra

6691

1 PRIMARY t2 system NULL NULL NULL NULL 0 const row not found

6692

1 PRIMARY t1 ALL NULL NULL NULL NULL 2

6693

2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used

6694

3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used

6695

NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL

6696

SELECT SUM(a) AS f1, a AS f2 FROM (t1, t2) HAVING f2 >= ALL (SELECT 4 UNION SELECT 5) AND f1 = 7;

6697

f1 f2

6698

drop table t1,t2;

6699

6700

# LP BUG#1008686 Server crashes in subselect_union_engine::no_rows on SELECT with impossible

6701

# WHERE and UNION in HAVING

6702

6703

CREATE TABLE t1 (a INT);

6704

INSERT INTO t1 VALUES (1),(7);

6705

EXPLAIN

6706

SELECT MIN(a) AS min_a, a FROM t1 WHERE 0 HAVING a NOT IN ( SELECT 2 UNION SELECT 5 ) OR min_a != 1;

6707

id select_type table type possible_keys key key_len ref rows Extra

6708

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

6709

2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used

6710

3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL No tables used

6711

NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL

6712

SELECT MIN(a) AS min_a, a FROM t1 WHERE 0 HAVING a NOT IN ( SELECT 2 UNION SELECT 5 ) OR min_a != 1;

6713

min_a a

6714

EXPLAIN

6715

SELECT MIN(a) AS min_a, a FROM t1 WHERE 1=2 HAVING a NOT IN ( SELECT a from t1 UNION select a+1 from t1 ) OR min_a != 1;

6716

id select_type table type possible_keys key key_len ref rows Extra

6717

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

6718

2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where

6719

3 DEPENDENT UNION t1 ALL NULL NULL NULL NULL 2 Using where

6720

NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL

6721

SELECT MIN(a) AS min_a, a FROM t1 WHERE 1=2 HAVING a NOT IN ( SELECT a from t1 UNION select a+1 from t1 ) OR min_a != 1;

6722

min_a a

6723

drop table t1;

6724

6725

# MDEV-367: Different results with and without subquery_cache on

6726

# a query with a constant NOT IN condition

6727

6728

CREATE TABLE t1 (a INT) ENGINE=MyISAM;

6729

INSERT INTO t1 VALUES (1),(2),(3);

6730

set @mdev367_optimizer_switch = @@optimizer_switch;

6731

set optimizer_switch = 'subquery_cache=on';

6732

SELECT * FROM t1 WHERE ( 3, 3 ) NOT IN ( SELECT NULL, NULL ) OR a > 100;

6733

6734

SELECT *, ( 3, 3 ) NOT IN ( SELECT NULL, NULL ) FROM t1;

6735

a ( 3, 3 ) NOT IN ( SELECT NULL, NULL )

6736

1 NULL

6737

2 NULL

6738

3 NULL

6739

set optimizer_switch=@mdev367_optimizer_switch;

6740

set optimizer_switch = 'subquery_cache=off';

6741

SELECT * FROM t1 WHERE ( 3, 3 ) NOT IN ( SELECT NULL, NULL ) OR a > 100;

6742

6743

SELECT *, ( 3, 3 ) NOT IN ( SELECT NULL, NULL ) FROM t1;

6744

a ( 3, 3 ) NOT IN ( SELECT NULL, NULL )

6745

1 NULL

6746

2 NULL

6747

3 NULL

6748

set optimizer_switch=@mdev367_optimizer_switch;

6749

DROP TABLE t1;

6750

6751

# MDEV-521 single value subselect transformation problem

6752

6753

CREATE TABLE t1 (f1 char(2), PRIMARY KEY (f1)) ENGINE=MyISAM;

6754

INSERT INTO t1 VALUES ('u1'),('u2');

6755

SELECT a.* FROM t1 a WHERE ( SELECT EXISTS ( SELECT 1 FROM t1 b WHERE b.f1 = a.f1 ) );

6756

6757

6758

6759

FLUSH TABLES;

6760

SELECT a.* FROM t1 a WHERE ( SELECT EXISTS ( SELECT 1 FROM t1 b WHERE b.f1 = a.f1 ) );

6761

6762

6763

6764

DROP TABLE t1;

6765

# return optimizer switch changed in the beginning of this test

6766

set optimizer_switch=@subselect_tmp;

6767

6768

# lp:944706 Query with impossible or constant subquery in WHERE or HAVING is not

6769

# precomputed and thus not part of optimization

6770

6771

CREATE TABLE t1 ( a VARCHAR(16), KEY (a) );

6772

INSERT INTO t1 VALUES ('Abilene'),('Akron'),('Albany'),('Albuquerque'),('Alexandria'),('Allentown'),

6773

('Amarillo'),('Anaheim'),('Anchorage'),('Ann Arbor'),('Arden-Arcade');

6774

EXPLAIN

6775

SELECT MAX( alias2.a ) AS field

6776

FROM t1 AS alias1, t1 AS alias2, t1 AS alias3

6777

WHERE alias1.a = alias2.a OR alias1.a = 'y'

6778

HAVING field>'B' AND ( 'Moscow' ) IN ( SELECT a FROM t1 );

6779

id select_type table type possible_keys key key_len ref rows Extra

6780

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible HAVING

6781

2 SUBQUERY t1 index_subquery a a 19 const 1 Using index; Using where

6782

SELECT MAX( alias2.a ) AS field

6783

FROM t1 AS alias1, t1 AS alias2, t1 AS alias3

6784

WHERE alias1.a = alias2.a OR alias1.a = 'y'

6785

HAVING field>'B' AND ( 'Moscow' ) IN ( SELECT a FROM t1 );

6786

field

6787

EXPLAIN

6788

SELECT MAX( alias2.a )

6789

FROM t1 AS alias1, t1 AS alias2, t1 AS alias3

6790

WHERE alias1.a = alias2.a OR ('Moscow') IN ( SELECT a FROM t1 );

6791

id select_type table type possible_keys key key_len ref rows Extra

6792

1 PRIMARY alias1 index a a 19 NULL 11 Using where; Using index

6793

1 PRIMARY alias2 ref a a 19 test.alias1.a 2 Using index

6794

1 PRIMARY alias3 index NULL a 19 NULL 11 Using index; Using join buffer (flat, BNL join)

6795

2 SUBQUERY t1 index_subquery a a 19 const 1 Using index; Using where

6796

SELECT MAX( alias2.a )

6797

FROM t1 AS alias1, t1 AS alias2, t1 AS alias3

6798

WHERE alias1.a = alias2.a OR ('Moscow') IN ( SELECT a FROM t1 );

6799

MAX( alias2.a )

6800

Arden-Arcade

6801

drop table t1;

6802

6803

# MDEV-277 CHEAP SQ: Server crashes in st_join_table::get_examined_rows

6804

# with semijoin+materialization, IN and = subqueries

6805

6806

CREATE TABLE t1 (a1 INT);

6807

INSERT INTO t1 VALUES (4),(6);

6808

CREATE TABLE t2 (b1 INT);

6809

INSERT INTO t2 VALUES (1),(7);

6810

EXPLAIN

6811

SELECT * FROM t1

6812

WHERE a1 = (SELECT COUNT(*) FROM t1 WHERE a1 IN (SELECT a1 FROM t1, t2));

6813

id select_type table type possible_keys key key_len ref rows Extra

6814

1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where

6815

2 SUBQUERY t1 ALL NULL NULL NULL NULL 2

6816

2 SUBQUERY <subquery3> eq_ref distinct_key distinct_key 4 func 1

6817

3 MATERIALIZED t1 ALL NULL NULL NULL NULL 2

6818

3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)

6819

SELECT * FROM t1

6820

WHERE a1 = (SELECT COUNT(*) FROM t1 WHERE a1 IN (SELECT a1 FROM t1, t2));

6821

6822

drop table t1, t2;

6823

6824

# MDEV-287 CHEAP SQ: A query with subquery in SELECT list, EXISTS,

6825

# inner joins takes hundreds times longer

6826

6827

CREATE TABLE t1 (a INT);

6828

INSERT INTO t1 VALUES (1),(7);

6829

CREATE TABLE t2 (b INT);

6830

INSERT INTO t2 VALUES (4),(5);

6831

CREATE TABLE t3 (c INT);

6832

INSERT INTO t3 VALUES (8),(3);

6833

set @@expensive_subquery_limit= 0;

6834

EXPLAIN

6835

SELECT (SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3)))

6836

FROM t2 alias1, t1 alias2, t1 alias3;

6837

id select_type table type possible_keys key key_len ref rows Extra

6838

1 PRIMARY alias1 ALL NULL NULL NULL NULL 2

6839

1 PRIMARY alias2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)

6840

1 PRIMARY alias3 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)

6841

2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where

6842

2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)

6843

3 SUBQUERY t3 ALL NULL NULL NULL NULL 2

6844

flush status;

6845

SELECT (SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3)))

6846

FROM t2 alias1, t1 alias2, t1 alias3;

6847

(SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3)))

6848

NULL

6849

NULL

6850

NULL

6851

NULL

6852

NULL

6853

NULL

6854

NULL

6855

NULL

6856

show status like "subquery_cache%";

6857

Variable_name Value

6858

Subquery_cache_hit 6

6859

Subquery_cache_miss 2

6860

show status like '%Handler_read%';

6861

Variable_name Value

6862

Handler_read_first 0

6863

Handler_read_key 8

6864

Handler_read_last 0

6865

Handler_read_next 0

6866

Handler_read_prev 0

6867

Handler_read_rnd 0

6868

Handler_read_rnd_deleted 0

6869

Handler_read_rnd_next 22

6870

set @@expensive_subquery_limit= default;

6871

EXPLAIN

6872

SELECT (SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3)))

6873

FROM t2 alias1, t1 alias2, t1 alias3;

6874

id select_type table type possible_keys key key_len ref rows Extra

6875

1 PRIMARY alias1 ALL NULL NULL NULL NULL 2

6876

1 PRIMARY alias2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)

6877

1 PRIMARY alias3 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)

6878

2 SUBQUERY t1 ALL NULL NULL NULL NULL 2

6879

2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)

6880

3 SUBQUERY t3 ALL NULL NULL NULL NULL 2

6881

flush status;

6882

SELECT (SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3)))

6883

FROM t2 alias1, t1 alias2, t1 alias3;

6884

(SELECT MIN(b) FROM t1, t2 WHERE b = a AND (b = alias1.b OR EXISTS (SELECT * FROM t3)))

6885

NULL

6886

NULL

6887

NULL

6888

NULL

6889

NULL

6890

NULL

6891

NULL

6892

NULL

6893

show status like "subquery_cache%";

6894

Variable_name Value

6895

Subquery_cache_hit 0

6896

Subquery_cache_miss 0

6897

show status like '%Handler_read%';

6898

Variable_name Value

6899

Handler_read_first 0

6900

Handler_read_key 0

6901

Handler_read_last 0

6902

Handler_read_next 0

6903

Handler_read_prev 0

6904

Handler_read_rnd 0

6905

Handler_read_rnd_deleted 0

6906

Handler_read_rnd_next 16

6907

drop table t1, t2, t3;

6908

6909

# MDEV-288 CHEAP SQ: Valgrind warnings "Memory lost" with IN and EXISTS nested subquery, materialization+semijoin

6910

6911

CREATE TABLE t1 (a INT);

6912

INSERT INTO t1 VALUES (0),(8);

6913

CREATE TABLE t2 (b INT PRIMARY KEY);

6914

INSERT INTO t2 VALUES (1),(2);

6915

EXPLAIN

6916

SELECT * FROM t1 WHERE 4 IN (SELECT MAX(b) FROM t2 WHERE EXISTS (SELECT * FROM t1));

6917

id select_type table type possible_keys key key_len ref rows Extra

6918

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

6919

2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL Select tables optimized away

6920

3 SUBQUERY t1 ALL NULL NULL NULL NULL 2

6921

SELECT * FROM t1 WHERE 4 IN (SELECT MAX(b) FROM t2 WHERE EXISTS (SELECT * FROM t1));

6922

6923

drop table t1,t2;

6924

6925

# MDEV-410: EXPLAIN shows type=range, while SHOW EXPLAIN and userstat show full table scan is used

6926

6927

CREATE TABLE t1 (a VARCHAR(3) PRIMARY KEY) ENGINE=MyISAM;

6928

INSERT INTO t1 VALUES ('USA');

6929

CREATE TABLE t2 (b INT, c VARCHAR(52), KEY(b)) ENGINE=MyISAM;

6930

INSERT INTO t2 VALUES (3813,'United States'),(3940,'Russia');

6931

CREATE TABLE t3 (d INT, KEY(d)) ENGINE=MyISAM;

6932

INSERT INTO t3 VALUES (12),(22),(9),(45);

6933

create table t4 like t3;

6934

insert into t4 select * from t3;

6935

# This should not show range access for table t2

6936

explain

6937

SELECT MIN(b) FROM ( SELECT * FROM t1, t2, t3 WHERE d = b ) AS alias1

6938

WHERE SLEEP(0.1) OR c < 'p' OR b = ( SELECT MIN(b) FROM t2 );

6939

id select_type table type possible_keys key key_len ref rows Extra

6940

1 PRIMARY t1 system NULL NULL NULL NULL 1

6941

1 PRIMARY t2 ALL b NULL NULL NULL 2 Using where

6942

1 PRIMARY t3 ref d d 5 test.t2.b 2 Using where; Using index

6943

3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away

6944

set @tmp_mdev410=@@global.userstat;

6945

set global userstat=on;

6946

flush table_statistics;

6947

flush index_statistics;

6948

SELECT MIN(b) FROM ( SELECT * FROM t1, t2, t3 WHERE d = b ) AS alias1

6949

WHERE SLEEP(0.1) OR c < 'p' OR b = ( SELECT MIN(b) FROM t2 );

6950

MIN(b)

6951

NULL

6952

# The following shows that t2 was indeed scanned with a full scan.

6953

show table_statistics;

6954

Table_schema Table_name Rows_read Rows_changed Rows_changed_x_#indexes

6955

test t1 2 0 0

6956

test t2 3 0 0

6957

show index_statistics;

6958

Table_schema Table_name Index_name Rows_read

6959

test t2 b 1

6960

set global userstat=@tmp_mdev410;

6961

DROP TABLE t1,t2,t3,t4;

6962

6963

# MDEV-430: Server crashes in select_describe on EXPLAIN with

6964

# materialization+semijoin, 2 nested subqueries, aggregate functions

6965

6966

CREATE TABLE t1 (a INT, KEY(a));

6967

INSERT INTO t1 VALUES (1),(8);

6968

CREATE TABLE t2 (b INT, KEY(b));

6969

INSERT INTO t2 VALUES (45),(17),(20);

6970

EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;

6971

id select_type table type possible_keys key key_len ref rows Extra

6972

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

6973

2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index

6974

2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index

6975

DROP TABLE t1,t2;

6976

6977

# MDEV-435: Expensive subqueries may be evaluated during optimization in merge_key_fields

6978

6979

CREATE TABLE t1 (a INT, KEY(a)) ENGINE=MyISAM;

6980

INSERT INTO t1 VALUES (8),(0);

6981

CREATE TABLE t2 (b INT, c VARCHAR(1)) ENGINE=MyISAM;

6982

INSERT INTO t2 VALUES (4,'j'),(6,'v');

6983

CREATE TABLE t3 (d VARCHAR(1)) ENGINE=MyISAM;

6984

INSERT INTO t3 VALUES ('b'),('c');

6985

EXPLAIN

6986

SELECT * FROM t1

6987

WHERE a = (SELECT MAX(b) FROM t2 WHERE c IN (SELECT MAX(d) FROM t3)) OR a = 10;

6988

id select_type table type possible_keys key key_len ref rows Extra

6989

1 PRIMARY t1 index a a 5 NULL 2 Using where; Using index

6990

2 SUBQUERY <subquery3> ALL distinct_key NULL NULL NULL 1

6991

2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)

6992

3 MATERIALIZED t3 ALL NULL NULL NULL NULL 2

6993

SELECT * FROM t1

6994

WHERE a = (SELECT MAX(b) FROM t2 WHERE c IN (SELECT MAX(d) FROM t3)) OR a = 10;

6995

6996

drop table t1, t2, t3;

6997

6998

# MDEV-405: Server crashes in test_if_skip_sort_order on EXPLAIN with GROUP BY and HAVING in EXISTS subquery

6999

7000

CREATE TABLE t1 (a INT, KEY(a));

7001

INSERT INTO t1 VALUES (1),(8);

7002

CREATE TABLE t2 (b INT, KEY(b));

7003

INSERT INTO t2 VALUES (45),(17),(20);

7004

EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;

7005

id select_type table type possible_keys key key_len ref rows Extra

7006

1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE

7007

2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index

7008

2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index

7009

DROP TABLE t1,t2;

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