subselect3.result

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oref	a
bb	2
dd	NULL
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
grp having min(ie) > 1) Z from t2;
oref	a	Z
ee	NULL	0
bb	2	0
ff	2	1
cc	3	0
aa	1	0
dd	NULL	0
bb	NULL	NULL
select oref, a from t2 where a in (select min(ie) from t1 where
oref=t2.oref group by grp having min(ie) > 1);
oref	a
ff	2
select oref, a from t2 where a not in (select min(ie) from t1 where
oref=t2.oref group by grp having min(ie) > 1);
oref	a
ee	NULL
bb	2
cc	3
aa	1
dd	NULL
alter table t1 add index idx(ie);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	7	
2	DEPENDENT SUBQUERY	t1	index_subquery	idx	idx	5	func	4	Using where; Full scan on NULL key
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
oref	a	Z
ee	NULL	NULL
bb	2	0
ff	2	1
cc	3	NULL
aa	1	1
dd	NULL	0
bb	NULL	NULL
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
oref	a
ff	2
aa	1
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
oref	a
bb	2
dd	NULL
alter table t1 drop index idx;
alter table t1 add index idx(oref,ie);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	7	
2	DEPENDENT SUBQUERY	t1	ref_or_null	idx	idx	10	test.t2.oref,func	4	Using where; Using index; Full scan on NULL key
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
oref	a	Z
ee	NULL	NULL
bb	2	0
ff	2	1
cc	3	NULL
aa	1	1
dd	NULL	0
bb	NULL	NULL
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
oref	a
ff	2
aa	1
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
oref	a
bb	2
dd	NULL
explain 
select oref, a, 
a in (select min(ie) from t1 where oref=t2.oref 
group by grp having min(ie) > 1) Z 
from t2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	7	
2	DEPENDENT SUBQUERY	t1	ref	idx	idx	5	test.t2.oref	2	Using where; Using temporary; Using filesort
select oref, a, 
a in (select min(ie) from t1 where oref=t2.oref 
group by grp having min(ie) > 1) Z 
from t2;
oref	a	Z
ee	NULL	0
bb	2	0
ff	2	1
cc	3	0
aa	1	0
dd	NULL	0
bb	NULL	NULL
select oref, a from t2 where a in (select min(ie) from t1 where oref=t2.oref 
group by grp having min(ie) > 1);
oref	a
ff	2
select oref, a from t2 where a not in (select min(ie) from t1 where oref=t2.oref 
group by grp having min(ie) > 1);
oref	a
ee	NULL
bb	2
cc	3
aa	1
dd	NULL
drop table t1,t2;
create table t1 (oref char(4), grp int, ie1 int, ie2 int);
insert into t1 (oref, grp, ie1, ie2) values
('aa', 10, 2, 1),
('aa', 10, 1, 1),
('aa', 20, 2, 1),
('bb', 10, 3, 1),
('cc', 10, 4, 2),
('cc', 20, 3, 2),
('ee', 10, 2, 1),
('ee', 10, 1, 2),
('ff', 20, 2, 2),
('ff', 20, 1, 2);
create table t2 (oref char(4), a int, b int);
insert into t2 values 
('ee', NULL, 1),
('bb', 2, 1),
('ff', 2, 2),
('cc', 3, NULL),
('bb', NULL, NULL),
('aa', 1, 1),
('dd', 1, NULL);
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
oref	a	b	Z
ee	NULL	1	NULL
bb	2	1	0
ff	2	2	1
cc	3	NULL	NULL
bb	NULL	NULL	NULL
aa	1	1	1
dd	1	NULL	0
select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
oref	a	b
ff	2	2
aa	1	1
select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
oref	a	b
bb	2	1
dd	1	NULL
select oref, a, b, 
(a,b) in (select min(ie1),max(ie2) from t1 
where oref=t2.oref group by grp) Z 
from t2;
oref	a	b	Z
ee	NULL	1	0
bb	2	1	0
ff	2	2	0
cc	3	NULL	NULL
bb	NULL	NULL	NULL
aa	1	1	1
dd	1	NULL	0
select oref, a, b from t2 where 
(a,b) in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
oref	a	b
aa	1	1
select oref, a, b from t2 where
(a,b) not in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
oref	a	b
ee	NULL	1
bb	2	1
ff	2	2
dd	1	NULL
alter table t1 add index idx(ie1,ie2);
explain select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	7	
2	DEPENDENT SUBQUERY	t1	index_subquery	idx	idx	5	func	4	Using where; Full scan on NULL key
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
oref	a	b	Z
ee	NULL	1	NULL
bb	2	1	0
ff	2	2	1
cc	3	NULL	NULL
bb	NULL	NULL	NULL
aa	1	1	1
dd	1	NULL	0
select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
oref	a	b
ff	2	2
aa	1	1
select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
oref	a	b
bb	2	1
dd	1	NULL
explain extended 
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	7	
2	DEPENDENT SUBQUERY	t1	index_subquery	idx	idx	5	func	4	Using where; Full scan on NULL key
Warnings:
Note	1276	Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1
Note	1003	select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`)))))) AS `Z` from `test`.`t2`
drop table t1,t2;
create table t1 (oref char(4), grp int, ie int primary key);
insert into t1 (oref, grp, ie) values
('aa', 10, 2),
('aa', 10, 1),
('bb', 10, 3),
('cc', 10, 4),
('cc', 20, 5),
('cc', 10, 6);
create table t2 (oref char(4), a int);
insert into t2 values 
('ee', NULL),
('bb', 2),
('cc', 5),
('cc', 2),
('cc', NULL),
('aa', 1),
('bb', NULL);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	7	
2	DEPENDENT SUBQUERY	t1	unique_subquery	PRIMARY	PRIMARY	4	func	1	Using where; Full scan on NULL key
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
oref	a	Z
ee	NULL	0
bb	2	0
cc	5	1
cc	2	0
cc	NULL	NULL
aa	1	1
bb	NULL	NULL
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
oref	a
cc	5
aa	1
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
oref	a
ee	NULL
bb	2
cc	2
explain 
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	7	
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	6	Using where; Using temporary; Using filesort
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
oref	a	Z
ee	NULL	0
bb	2	0
cc	5	1
cc	2	0
cc	NULL	NULL
aa	1	1
bb	NULL	NULL
drop table t1,t2;
create table t1 (a int, b int);
insert into t1 values (0,0), (2,2), (3,3);
create table t2 (a int, b int);
insert into t2 values (1,1), (3,3);
select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1;
a	b	Z
0	0	0
2	2	0
3	3	1
insert into t2 values (NULL,4);
select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1;
a	b	Z
0	0	0
2	2	0
3	3	1
drop table t1,t2;
CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
INSERT INTO t1 VALUES (1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'),
(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'),(3,3,'j'), (3,2,'k'), (3,1,'l'),
(1,9,'m');
CREATE TABLE t2 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
INSERT INTO t2 SELECT * FROM t1;
SELECT a, MAX(b), (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b))
as test FROM t1 GROUP BY a;
a	MAX(b)	test
1	9	m
2	3	h
3	4	i
SELECT * FROM t1 GROUP by t1.a
HAVING (MAX(t1.b) > (SELECT MAX(t2.b) FROM t2 WHERE t2.c < t1.c
HAVING MAX(t2.b+t1.a) < 10));
a	b	c
SELECT a,b,c FROM t1 WHERE b in (9,3,4) ORDER BY b,c;
a	b	c
1	3	c
2	3	h
3	3	j
1	4	d
3	4	i
1	9	m
SELECT a, MAX(b),
(SELECT COUNT(DISTINCT t.c) FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) 
LIMIT 1) 
as cnt, 
(SELECT t.b FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) 
as t_b,
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) 
as t_b,
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) ORDER BY t.c LIMIT 1)
as t_b
FROM t1 GROUP BY a;
a	MAX(b)	cnt	t_b	t_b	t_b
1	9	1	9	m	m
2	3	1	3	h	h
3	4	1	4	i	i
SELECT a, MAX(b),
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) as test 
FROM t1 GROUP BY a;
a	MAX(b)	test
1	9	m
2	3	h
3	4	i
DROP TABLE t1, t2;
CREATE TABLE t1 (a int);
CREATE TABLE t2 (b int, PRIMARY KEY(b));
INSERT INTO t1 VALUES (1), (NULL), (4);
INSERT INTO t2 VALUES (3), (1),(2), (5), (4), (7), (6);
EXPLAIN EXTENDED 
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	Using where
1	PRIMARY	t2	eq_ref	PRIMARY	PRIMARY	4	test.t1.a	1	Using index
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	Using where
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`b` = `test`.`t1`.`a`) and (not(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 AS `Not_used` from `test`.`t1` where ((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)) having <is_not_null_test>(`test`.`t1`.`a`))))))
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1));
a
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1 WHERE a > 4));
a
1
4
DROP TABLE t1,t2;
CREATE TABLE t1 (id int);
CREATE TABLE t2 (id int PRIMARY KEY);
CREATE TABLE t3 (id int PRIMARY KEY, name varchar(10));
INSERT INTO t1 VALUES (2), (NULL), (3), (1);
INSERT INTO t2 VALUES (234), (345), (457);
INSERT INTO t3 VALUES (222,'bbb'), (333,'ccc'), (111,'aaa');
EXPLAIN
SELECT * FROM t1
WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 
WHERE t3.name='xxx' AND t2.id=t3.id);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	4	Using where
2	DEPENDENT SUBQUERY	t2	eq_ref	PRIMARY	PRIMARY	4	func	1	Using where; Using index; Full scan on NULL key
2	DEPENDENT SUBQUERY	t3	eq_ref	PRIMARY	PRIMARY	4	func	1	Using where; Full scan on NULL key
SELECT * FROM t1
WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 
WHERE t3.name='xxx' AND t2.id=t3.id);
id
2
NULL
3
1
SELECT (t1.id IN (SELECT t2.id FROM t2,t3 
WHERE t3.name='xxx' AND t2.id=t3.id)) AS x
FROM t1;
x
0
0
0
0
DROP TABLE t1,t2,t3;
CREATE TABLE t1 (a INT NOT NULL);
INSERT INTO t1 VALUES (1),(-1), (65),(66);
CREATE TABLE t2 (a INT UNSIGNED NOT NULL PRIMARY KEY);
INSERT INTO t2 VALUES (65),(66);
SELECT a FROM t1 WHERE a NOT IN (65,66);
a
1
-1
SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2);
a
1
-1
EXPLAIN SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	4	Using where
2	DEPENDENT SUBQUERY	t2	unique_subquery	PRIMARY	PRIMARY	4	func	1	Using index
DROP TABLE t1;
End of 5.0 tests