path: root/mysql-test/r/subselect4.result

drop table if exists t0,t1,t2,t3,t4,t5,t6;
drop view if exists v1, v2;
set @subselect4_tmp= @@optimizer_switch;
set optimizer_switch='semijoin=on,firstmatch=on,loosescan=on';
set optimizer_switch='semijoin_with_cache=on';
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
#
# Bug #46791: Assertion failed:(table->key_read==0),function unknown
#    function,file sql_base.cc
#
CREATE TABLE t1 (a INT, b INT, KEY(a));
INSERT INTO t1 VALUES (1,1),(2,2);
CREATE TABLE t2 LIKE t1;
INSERT INTO t2 VALUES (1,1),(2,2);
CREATE TABLE t3 LIKE t1;
# should have 1 impossible where and 2 dependent subqueries
EXPLAIN
SELECT 1 FROM t1
WHERE NOT EXISTS (SELECT 1 FROM t2 WHERE 1 = (SELECT MIN(t2.b) FROM t3))
ORDER BY count(*);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	index	NULL	a	5	NULL	2	Using where; Using index; Using temporary
2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DEPENDENT SUBQUERY	t3	system	NULL	NULL	NULL	NULL	0	const row not found
# should not crash the next statement
SELECT 1 FROM t1
WHERE NOT EXISTS (SELECT 1 FROM t2 WHERE 1 = (SELECT MIN(t2.b) FROM t3))
ORDER BY count(*);
1
1
# should not crash: the crash is caused by the previous statement
SELECT 1;
1
1
DROP TABLE t1,t2,t3;
#
# Bug #47106: Crash / segfault on adding EXPLAIN to a non-crashing 
# query
#
CREATE TABLE t1 (
a INT,
b INT,
PRIMARY KEY (a),
KEY b (b)
);
INSERT INTO t1 VALUES (1, 1), (2, 1);
CREATE TABLE t2 LIKE t1;
INSERT INTO t2 SELECT * FROM t1;
CREATE TABLE t3 LIKE t1;
INSERT INTO t3 SELECT * FROM t1;
# Should not crash.
# Should have 1 impossible where and 2 dependent subqs.
EXPLAIN
SELECT
(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
FROM t3 WHERE 1 = 0 GROUP BY 1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
2	DEPENDENT SUBQUERY	t1	index	NULL	PRIMARY	4	NULL	2	Using index
2	DEPENDENT SUBQUERY	t2	ALL	b	NULL	NULL	NULL	2	Range checked for each record (index map: 0x2)
# should return 0 rows
SELECT
(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
FROM t3 WHERE 1 = 0 GROUP BY 1;
(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
DROP TABLE t1,t2,t3;
End of 5.0 tests.
CREATE TABLE t1 (col_int_nokey int(11) NOT NULL, col_varchar_nokey varchar(1) NOT NULL) engine=myisam;
INSERT INTO t1 VALUES (2,'s'),(0,'v'),(2,'s');
CREATE TABLE t2 (
pk int(11) NOT NULL AUTO_INCREMENT,
`col_int_key` int(11) NOT NULL,
col_varchar_key varchar(1) NOT NULL,
PRIMARY KEY (pk),
KEY `col_int_key` (`col_int_key`),
KEY `col_varchar_key` (`col_varchar_key`)
) ENGINE=MyISAM;
INSERT INTO t2 VALUES (4,10,'g'), (5,20,'v');
SELECT t1.col_int_nokey,(SELECT MIN( t2_a.col_int_key ) FROM t2 t2_a, t2 t2_b, t1 t1_a WHERE t1_a.col_varchar_nokey = t2_b.col_varchar_key and t1.col_int_nokey ) as sub FROM t1;
col_int_nokey	sub
2	10
0	NULL
2	10
SELECT t1.col_int_nokey,(SELECT MIN( t2_a.col_int_key ) +1 FROM t2 t2_a, t2 t2_b, t1 t1_a WHERE t1_a.col_varchar_nokey = t2_b.col_varchar_key and t1.col_int_nokey ) as sub FROM t1;
col_int_nokey	sub
2	11
0	NULL
2	11
DROP TABLE t1,t2;
#
# Bug#54568: create view cause Assertion failed: 0, 
# file .\item_subselect.cc, line 836
#
EXPLAIN SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Note	1249	Select 2 was reduced during optimization
DESCRIBE SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Note	1249	Select 2 was reduced during optimization
# None of the below should crash
CREATE VIEW v1 AS SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
CREATE VIEW v2 AS SELECT 1 LIKE '%' ESCAPE ( 1 IN ( SELECT 1 ) );
DROP VIEW v1, v2;
# 
# Bug#51070: Query with a NOT IN subquery predicate returns a wrong
# result set
# 
CREATE TABLE t1 ( a INT, b INT );
INSERT INTO t1 VALUES ( 1, NULL ), ( 2, NULL );
CREATE TABLE t2 ( c INT, d INT );
INSERT INTO t2 VALUES ( NULL, 3 ), ( NULL, 4 );
CREATE TABLE t3 ( e INT, f INT );
INSERT INTO t3 VALUES ( NULL, NULL ), ( NULL, NULL );
CREATE TABLE t4 ( a INT );
INSERT INTO t4 VALUES (1), (2), (3);
CREATE TABLE t5 ( a INT );
INSERT INTO t5 VALUES (NULL), (2);
SET @old_optimizer_switch = @@session.optimizer_switch;
SET SESSION optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';
EXPLAIN
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
x	PRIMARY	x	x	x	x	x	x	x	x
x	DEPENDENT SUBQUERY	x	x	x	x	x	x	x	x
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 );
a	b
EXPLAIN
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS NULL;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS NULL;
a	b
1	NULL
2	NULL
SELECT * FROM t1 WHERE ( a, b ) IN ( SELECT c, d FROM t2 ) IS NULL;
a	b
1	NULL
2	NULL
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS UNKNOWN;
a	b
1	NULL
2	NULL
SELECT * FROM t1 WHERE (( a, b ) NOT IN ( SELECT c, d FROM t2 )) IS UNKNOWN;
a	b
1	NULL
2	NULL
SELECT * FROM t1 WHERE 1 = 1 AND ( a, b ) NOT IN ( SELECT c, d FROM t2 );
a	b
EXPLAIN
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT e, f FROM t3 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
x	PRIMARY	x	x	x	x	x	x	x	x
x	DEPENDENT SUBQUERY	x	x	x	x	x	x	x	x
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT e, f FROM t3 );
a	b
EXPLAIN
SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT a, b FROM t1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
x	PRIMARY	x	x	x	x	x	x	x	x
x	DEPENDENT SUBQUERY	x	x	x	x	x	x	x	x
SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT a, b FROM t1 );
c	d
EXPLAIN
SELECT * FROM t3 WHERE ( e, f ) NOT IN ( SELECT c, d FROM t2 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
x	PRIMARY	x	x	x	x	x	x	x	x
x	DEPENDENT SUBQUERY	x	x	x	x	x	x	x	x
SELECT * FROM t3 WHERE ( e, f ) NOT IN ( SELECT c, d FROM t2 );
e	f
EXPLAIN
SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT e, f FROM t3 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
x	PRIMARY	x	x	x	x	x	x	x	x
x	DEPENDENT SUBQUERY	x	x	x	x	x	x	x	x
SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT e, f FROM t3 );
c	d
SELECT * FROM t1 WHERE ( a, b ) NOT IN 
( SELECT c, d FROM t2 WHERE c = 1 AND c <> 1 );
a	b
1	NULL
2	NULL
SELECT * FROM t1 WHERE b NOT IN ( SELECT c FROM t2 WHERE c = 1 );
a	b
1	NULL
2	NULL
SELECT * FROM t1 WHERE NULL NOT IN ( SELECT c FROM t2 WHERE c = 1 AND c <> 1 );
a	b
1	NULL
2	NULL
SET SESSION optimizer_switch = @old_optimizer_switch;
DROP TABLE t1, t2, t3, t4, t5;
#
# Bug#58207: invalid memory reads when using default column value and 
# tmptable needed
#
CREATE TABLE t(a VARCHAR(245) DEFAULT
'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa');
INSERT INTO t VALUES (''),(''),(''),(''),(''),(''),(''),(''),(''),(''),('');
SELECT * FROM (SELECT default(a) FROM t GROUP BY a) d;
default(a)
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
DROP TABLE t;
#
# End of 5.1 tests.
#
#
# BUG#46743 "Azalea processing correlated, aggregate SELECT
# subqueries incorrectly"
#
CREATE TABLE t1 (c int);
INSERT INTO t1 VALUES (NULL);
CREATE TABLE t2 (d int , KEY (d));
INSERT INTO t2 VALUES (NULL),(NULL);
0 rows in subquery
SELECT 1 AS RESULT FROM t2,t1 WHERE d = c;
RESULT
base query
SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 ;
RESULT
NULL
EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 ;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	100.00	
2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
Warnings:
Note	1276	Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
Note	1003	select <expr_cache><>((select 1 from `test`.`t2` where 0)) AS `RESULT` from dual
first equivalent variant
SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c ;
RESULT
NULL
EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	100.00	
2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
Warnings:
Note	1276	Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
Note	1003	select <expr_cache><>((select 1 from `test`.`t2` where 0)) AS `RESULT` from dual group by NULL
second equivalent variant
SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ;
RESULT
NULL
EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	100.00	
2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
Warnings:
Note	1276	Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
Note	1003	select <expr_cache><>((select 1 from `test`.`t2` where 0)) AS `RESULT` from dual group by NULL
DROP TABLE t1,t2;
#
# BUG#45928 "Differing query results depending on MRR and
# engine_condition_pushdown settings"
#
CREATE TABLE `t1` (
`pk` int(11) NOT NULL AUTO_INCREMENT,
`time_nokey` time NOT NULL,
`varchar_key` varchar(1) NOT NULL,
`varchar_nokey` varchar(1) NOT NULL,
PRIMARY KEY (`pk`),
KEY `varchar_key` (`varchar_key`)
) AUTO_INCREMENT=12 DEFAULT CHARSET=latin1;
INSERT INTO `t1` VALUES (10,'00:00:00','i','i'),(11,'00:00:00','','');
set @old_optimizer_switch          = @@session.optimizer_switch,
@old_engine_condition_pushdown = @@session.engine_condition_pushdown;
SET SESSION OPTIMIZER_SWITCH = 'materialization=off,semijoin=off,loosescan=off,firstmatch=off,mrr=on';
SET SESSION engine_condition_pushdown = 1;
Warnings:
Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MariaDB 7.0. Please use '@@optimizer_switch' instead
SELECT `time_nokey` G1  FROM t1  WHERE ( `varchar_nokey`  , `varchar_key`  )  IN ( 
SELECT `varchar_nokey`  , `varchar_nokey`  )  AND `varchar_key`  >= 'c' HAVING G1  ORDER 
BY `pk`   ;
G1
set @@session.optimizer_switch          = @old_optimizer_switch,
@@session.engine_condition_pushdown = @old_engine_condition_pushdown;
Warnings:
Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MariaDB 7.0. Please use '@@optimizer_switch' instead
DROP TABLE t1;
#
# During work with BUG#45863 I had problems with a query that was
# optimized differently in regular and prepared mode.
# Because there was a bug in one of the selected strategies, I became
# aware of the problem. Adding an EXPLAIN query to catch this.
DROP TABLE IF EXISTS t1, t2, t3;
CREATE TABLE t1
(EMPNUM   CHAR(3) NOT NULL,
EMPNAME  CHAR(20),
GRADE    DECIMAL(4),
CITY     CHAR(15));
CREATE TABLE t2
(PNUM     CHAR(3) NOT NULL,
PNAME    CHAR(20),
PTYPE    CHAR(6),
BUDGET   DECIMAL(9),
CITY     CHAR(15));
CREATE TABLE t3
(EMPNUM   CHAR(3) NOT NULL,
PNUM     CHAR(3) NOT NULL,
HOURS    DECIMAL(5));
INSERT INTO t1 VALUES ('E1','Alice',12,'Deale');
INSERT INTO t1 VALUES ('E2','Betty',10,'Vienna');
INSERT INTO t1 VALUES ('E3','Carmen',13,'Vienna');
INSERT INTO t1 VALUES ('E4','Don',12,'Deale');
INSERT INTO t1 VALUES ('E5','Ed',13,'Akron');
INSERT INTO t2 VALUES ('P1','MXSS','Design',10000,'Deale');
INSERT INTO t2 VALUES ('P2','CALM','Code',30000,'Vienna');
INSERT INTO t2 VALUES ('P3','SDP','Test',30000,'Tampa');
INSERT INTO t2 VALUES ('P4','SDP','Design',20000,'Deale');
INSERT INTO t2 VALUES ('P5','IRM','Test',10000,'Vienna');
INSERT INTO t2 VALUES ('P6','PAYR','Design',50000,'Deale');
INSERT INTO t3 VALUES  ('E1','P1',40);
INSERT INTO t3 VALUES  ('E1','P2',20);
INSERT INTO t3 VALUES  ('E1','P3',80);
INSERT INTO t3 VALUES  ('E1','P4',20);
INSERT INTO t3 VALUES  ('E1','P5',12);
INSERT INTO t3 VALUES  ('E1','P6',12);
INSERT INTO t3 VALUES  ('E2','P1',40);
INSERT INTO t3 VALUES  ('E2','P2',80);
INSERT INTO t3 VALUES  ('E3','P2',20);
INSERT INTO t3 VALUES  ('E4','P2',20);
INSERT INTO t3 VALUES  ('E4','P4',40);
INSERT INTO t3 VALUES  ('E4','P5',80);
SET @old_optimizer_switch = @@session.optimizer_switch;
SET @old_join_cache_level = @@session.join_cache_level;
SET SESSION optimizer_switch = 'firstmatch=on,loosescan=on,materialization=on,in_to_exists=off,semijoin=on';
SET SESSION join_cache_level = 1;
CREATE UNIQUE INDEX t1_IDX ON t1(EMPNUM);
EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
(SELECT EMPNUM
FROM t3
WHERE PNUM IN
(SELECT PNUM
FROM t2
WHERE PTYPE = 'Design'));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	t1_IDX	NULL	NULL	NULL	5	
1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
   (SELECT EMPNUM
    FROM t3
    WHERE PNUM IN
       (SELECT PNUM
        FROM t2
        WHERE PTYPE = 'Design'))";
EXECUTE stmt;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	t1_IDX	NULL	NULL	NULL	5	
1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	t1_IDX	NULL	NULL	NULL	5	
1	SIMPLE	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
DROP INDEX t1_IDX ON t1;
CREATE INDEX t1_IDX ON t1(EMPNUM);
EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
(SELECT EMPNUM
FROM t3
WHERE PNUM IN
(SELECT PNUM
FROM t2
WHERE PTYPE = 'Design'));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	t1_IDX	NULL	NULL	NULL	5	
1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
   (SELECT EMPNUM
    FROM t3
    WHERE PNUM IN
       (SELECT PNUM
        FROM t2
        WHERE PTYPE = 'Design'))";
EXECUTE stmt;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	t1_IDX	NULL	NULL	NULL	5	
1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	t1_IDX	NULL	NULL	NULL	5	
1	SIMPLE	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
DROP INDEX t1_IDX ON t1;
EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
(SELECT EMPNUM
FROM t3
WHERE PNUM IN
(SELECT PNUM
FROM t2
WHERE PTYPE = 'Design'));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	
1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
   (SELECT EMPNUM
    FROM t3
    WHERE PNUM IN
       (SELECT PNUM
        FROM t2
        WHERE PTYPE = 'Design'))";
EXECUTE stmt;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	
1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	
1	SIMPLE	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
SET SESSION optimizer_switch = @old_optimizer_switch;
SET SESSION join_cache_level = @old_join_cache_level;
DROP TABLE t1, t2, t3;
#
# BUG#45221 Query SELECT pk FROM C WHERE pk IN (SELECT int_key) failing
#
CREATE TABLE t1 (
i1_key INT,
i2 INT,
i3 INT,
KEY i1_index (i1_key)
);
INSERT INTO t1 VALUES (9,1,2), (9,2,1);
CREATE TABLE t2 (
pk INT NOT NULL,
i1 INT,
PRIMARY KEY (pk)
);
INSERT INTO t2 VALUES (9,1);
# Enable Index condition pushdown
SELECT @old_icp:=@@engine_condition_pushdown;
@old_icp:=@@engine_condition_pushdown
#
SET SESSION engine_condition_pushdown = 'ON';
Warnings:
Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MariaDB 7.0. Please use '@@optimizer_switch' instead

SELECT pk
FROM t2
WHERE 
pk IN ( 
SELECT i1_key
FROM t1
WHERE t1.i2 < t1.i3 XOR t2.i1 > 1
ORDER BY t1.i2 desc);
pk
9
# Restore old value for Index condition pushdown
SET SESSION engine_condition_pushdown=@old_icp;
Warnings:
Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MariaDB 7.0. Please use '@@optimizer_switch' instead
DROP TABLE t1,t2;
#
# End of 5.3 tests.
#
#
# Bug#53236 Segfault in DTCollation::set(DTCollation&)
#
CREATE TABLE t1 (
pk INTEGER AUTO_INCREMENT,
col_varchar VARCHAR(1),
PRIMARY KEY (pk)
)
;
INSERT INTO t1 (col_varchar) 
VALUES
('w'),
('m')
;
SELECT  table1.pk
FROM ( t1 AS table1 JOIN t1 AS table2 ON (table1.col_varchar =
table2.col_varchar) ) 
WHERE ( 1, 2 ) IN ( SELECT SUBQUERY1_t1.pk AS SUBQUERY1_field1,
SUBQUERY1_t1.pk AS SUBQUERY1_field2
FROM ( t1 AS SUBQUERY1_t1 JOIN t1 AS SUBQUERY1_t2
ON (SUBQUERY1_t2.col_varchar =
SUBQUERY1_t1.col_varchar) ) ) 
;
pk
drop table t1;
#
# BUG#716293: "Range checked for each record" is not used if condition refers to outside of subquery
#
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (a int, b int, `filler` char(200), key(a), key (b));
insert into t2 
select A.a + 10*B.a + 100 * C.a, A.a + 10*B.a + 100 * C.a, 'filler' from t1 A, t1 B, t1 C;
# The following must use "Range checked for each record" for table B
explain 
select a, 
(select sum(X.a+B.b) from t1 X, t2 B where B.a=A.a or B.b=A.a)
from t1 A;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	A	ALL	NULL	NULL	NULL	NULL	10	
2	DEPENDENT SUBQUERY	X	ALL	NULL	NULL	NULL	NULL	10	
2	DEPENDENT SUBQUERY	B	ALL	a,b	NULL	NULL	NULL	1000	Range checked for each record (index map: 0x3)
drop table t1, t2;
#
# BUG#723822: Crash in get_constant_key_infix with EXISTS ( SELECT .. DISTINCT )
#
CREATE TABLE t1 ( f1 int(11), f3 varchar(1)) ;
INSERT INTO t1 VALUES ('8','c'),('5','f');
ALTER TABLE t1 ADD KEY (f3,f1);
CREATE TABLE t2 ( f4 varchar(1)) ;
INSERT INTO t2 VALUES ('f'),('d');
SELECT * FROM t2
WHERE EXISTS (
SELECT DISTINCT f3
FROM t1
WHERE f3 <= t2.f4
);
f4
f
d
drop table t1,t2;
#
# LP BUG#718763 Second crash in select_describe() and materialization
#
CREATE TABLE t1 ( f1 int(11), f3 int(11), f10 varchar(1), KEY (f3)) ;
INSERT INTO t1 VALUES ('28','6','m'),('29','4','c');
CREATE TABLE t2 (f11 varchar(1)) ;
INSERT INTO t2 VALUES ('f'),('d');
SET @old_optimizer_switch = @@session.optimizer_switch;
SET SESSION optimizer_switch = 'materialization=on,in_to_exists=off';
EXPLAIN
SELECT * FROM t1
WHERE f3 = (
SELECT t1.f3 FROM t1
WHERE ( t1.f10 ) IN ( SELECT f11 FROM t2 GROUP BY f11 ));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ref	f3	f3	5	const	0	Using index condition
2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
2	SUBQUERY	<subquery3>	eq_ref	distinct_key	distinct_key	5	test.t1.f10	1	
3	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using temporary
SELECT * FROM t1
WHERE f3 = (
SELECT t1.f3 FROM t1
WHERE ( t1.f10 ) IN ( SELECT f11 FROM t2 GROUP BY f11 ));
f1	f3	f10
EXPLAIN
SELECT * FROM t1
WHERE f3 = (
SELECT f3 FROM t1
WHERE ( f10, f10 ) IN ( SELECT f11, f11 FROM t2 GROUP BY f11 ));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ref	f3	f3	5	const	0	Using index condition
2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
2	SUBQUERY	<subquery3>	eq_ref	distinct_key	distinct_key	10	test.t1.f10,test.t1.f10	1	
3	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using temporary
SELECT * FROM t1
WHERE f3 = (
SELECT f3 FROM t1
WHERE ( f10, f10 ) IN ( SELECT f11, f11 FROM t2 GROUP BY f11 ));
f1	f3	f10
SET SESSION optimizer_switch = @old_optimizer_switch;
drop table t1,t2;
#
# LP BUG#715738: Wrong result with implicit grouping and empty result set
#
CREATE TABLE t1 (f1 int, f2 int);
CREATE TABLE t2 (f3 int, f4 int not null, PRIMARY KEY (f3));
set @save_optimizer_switch=@@optimizer_switch;
SET @@optimizer_switch = 'materialization=on,in_to_exists=off,semijoin=off';
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
f1	f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
not_in
NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
f1	f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
not_in
1
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
not_in
NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No matching min/max row
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
f1	f2
SET @@optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
f1	f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
not_in
NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
f1	f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
not_in
1
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
not_in
NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No matching min/max row
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
f1	f2
INSERT INTO t1 VALUES (1, 2);
INSERT INTO t1 VALUES (3, 4);
INSERT INTO t2 VALUES (5, 6);
INSERT INTO t2 VALUES (7, 8);
SET @@optimizer_switch = 'materialization=on,in_to_exists=off,semijoin=off';
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
not_in
1
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No matching min/max row
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
f1	f2
SET @@optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
f1	f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
not_in
1
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No matching min/max row
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
f1	f2
set @@optimizer_switch=@save_optimizer_switch;
drop table t1,t2;
#
# LP BUG#613029 Wrong result with materialization and semijoin, and
# valgrind warnings in Protocol::net_store_data with materialization
# for implicit grouping
#
CREATE TABLE t1 (
pk int(11) NOT NULL AUTO_INCREMENT,
f2 int(11) NOT NULL,
f3 varchar(1) NOT NULL,
PRIMARY KEY (pk),
KEY f2 (f2));
INSERT INTO t1 VALUES (1,9,'x');
INSERT INTO t1 VALUES (2,5,'g');
CREATE TABLE t2 (
pk int(11) NOT NULL AUTO_INCREMENT,
f2 int(11) NOT NULL,
f3 varchar(1) NOT NULL,
PRIMARY KEY (pk),
KEY f2 (f2));
INSERT INTO t2 VALUES (1,7,'p');
set @save_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
EXPLAIN
SELECT t1.f3, MAX(t1.f2)
FROM t1, t2
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	PRIMARY	NULL	NULL	NULL	1	
1	PRIMARY	t1	const	PRIMARY	PRIMARY	4	const	1	
2	DEPENDENT SUBQUERY	t1	index_subquery	f2	f2	4	func	2	Using index
SELECT t1.f3, MAX(t1.f2)
FROM t1, t2
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
f3	MAX(t1.f2)
NULL	NULL
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
EXPLAIN
SELECT t1.f3, MAX(t1.f2)
FROM t1, t2
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	PRIMARY	NULL	NULL	NULL	1	
1	PRIMARY	t1	const	PRIMARY	PRIMARY	4	const	1	
2	SUBQUERY	t1	index	NULL	f2	4	NULL	2	Using index
SELECT t1.f3, MAX(t1.f2)
FROM t1, t2
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
f3	MAX(t1.f2)
NULL	NULL
TODO: add a test case for semijoin when the wrong result is fixed
set @@optimizer_switch='materialization=off,semijoin=on';
set @@optimizer_switch=@save_optimizer_switch;
drop table t1, t2;
#
# LP BUG#777691 Wrong result with subqery in select list and subquery cache=off in maria-5.3
#
CREATE TABLE t1 ( f1 varchar(32)) ;
INSERT INTO t1 VALUES ('b'),('x'),('c'),('x');
CREATE TABLE t2 ( f2 int, f3 varchar(32)) ;
INSERT INTO t2 VALUES (1,'x');
set @save_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch='materialization=off,in_to_exists=on,subquery_cache=off';
EXPLAIN
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	4	
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	1	
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
f1	max_f2
b	NULL
x	1
c	NULL
x	1
set @@optimizer_switch='materialization=on,in_to_exists=off,subquery_cache=off';
EXPLAIN
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	4	
2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	1	
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
f1	max_f2
b	NULL
x	1
c	NULL
x	1
set @@optimizer_switch='materialization=off,in_to_exists=on,subquery_cache=off';
Even when t2 is not constant table, the result must be the same.
INSERT INTO t2 VALUES (2,'y');
EXPLAIN
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	4	
2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
f1	max_f2
b	NULL
x	1
c	NULL
x	1
set @@optimizer_switch=@save_optimizer_switch;
drop table t1, t2;
#
# LP BUG#641203 Query returns rows where no result is expected (impossible WHERE)
#
CREATE TABLE t1 (c1 varchar(1) DEFAULT NULL);
CREATE TABLE t2 (c1 varchar(1) DEFAULT NULL);
INSERT INTO t2 VALUES ('k'), ('d');
CREATE TABLE t3 (c1 varchar(1) DEFAULT NULL);
INSERT INTO t3 VALUES ('a'), ('b'), ('c');
CREATE TABLE t4 (c1 varchar(1) primary key);
INSERT INTO t4 VALUES ('k'), ('d');
EXPLAIN
SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	0	const row not found
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; FirstMatch(t1)
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using join buffer (flat, BNL join)
SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
c1	c1
EXPLAIN
SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	0	const row not found
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; FirstMatch(t1)
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using join buffer (flat, BNL join)
SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
c1	c1
EXPLAIN
SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	0	const row not found
1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using join buffer (flat, BNL join)
1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	Using where
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2);
c1	c1	c1
EXPLAIN
SELECT * FROM t4 LEFT JOIN t2 ON t4.c1 WHERE 's' IN (SELECT c1 FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
1	PRIMARY	t4	index	NULL	PRIMARY	3	NULL	2	Using index; Using join buffer (flat, BNL join)
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
SELECT * FROM t4 LEFT JOIN t2 ON t4.c1 WHERE 's' IN (SELECT c1 FROM t2);
c1	c1
drop table t1, t2, t3, t4;
#
# LP BUG#675981 Assertion `cache != __null' failed in sub_select_cache()
#               on EXPLAIN
#
CREATE TABLE t1 (f1 int,f2 int) ;
INSERT IGNORE INTO t1 VALUES ('2','5'),('2',NULL);
CREATE TABLE t2 (f1 int, f5 int) ;
INSERT IGNORE INTO t2 VALUES (1,0);
CREATE TABLE t3 (f4 int) ;
INSERT IGNORE INTO t3 VALUES (0),(0);
set @@optimizer_switch='in_to_exists=on,materialization=off,semijoin=off';
EXPLAIN
SELECT * FROM t2
WHERE f1 IN (SELECT t1.f2 FROM t1 JOIN t3 ON t3.f4);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
2	DEPENDENT SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
drop table t1, t2, t3;
#
# LP BUG#680005 Second assertion `cache != __null' failed in
#                sub_select_cache() on EXPLAIN
#
CREATE TABLE t1 (f1 int,f2 int,f4 int,f6 int,KEY (f4)) ;
INSERT IGNORE INTO t1 VALUES
('1','5','1','0'),('2','1','1','0'),('2','2','2','0'),('0',NULL,'0','0'),
('2','1','2','0'),('2','0','0','0'),('2','2','2','0'),('2','8','2','0'),
('2','7','2','0'),('2','5','2','0'),('2',NULL,'1','0');
CREATE TABLE t2 (f3 int) ;
INSERT IGNORE INTO t2 VALUES ('7');
CREATE TABLE t3 (f3 int) ;
INSERT IGNORE INTO t3 VALUES ('2');
EXPLAIN
SELECT t1.f4
FROM t2 JOIN t1 ON t1.f6
WHERE
( t1.f2 ) IN (SELECT SUBQUERY2_t1.f3
FROM t3 AS SUBQUERY2_t1
JOIN
(t1 AS SUBQUERY2_t2
JOIN
t1 AS SUBQUERY2_t3 ON SUBQUERY2_t3.f1)
ON SUBQUERY2_t3.f2)
GROUP BY t1.f4 ORDER BY t1.f1 LIMIT 10;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	Using temporary; Using filesort
1	PRIMARY	t1	index	NULL	f4	5	NULL	11	Using where
2	DEPENDENT SUBQUERY	SUBQUERY2_t1	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	SUBQUERY2_t2	index	NULL	f4	5	NULL	11	Using index
2	DEPENDENT SUBQUERY	SUBQUERY2_t3	ALL	NULL	NULL	NULL	NULL	11	Using where; Using join buffer (flat, BNL join)
drop table t1, t2, t3;
#
# LP BUG#680038 bool close_thread_table(THD*, TABLE**):
#               Assertion `table->key_read == 0' failed in EXPLAIN
#
CREATE TABLE t1 (f1 int,f3 int,f4 int) ;
INSERT IGNORE INTO t1 VALUES (NULL,1,0);
CREATE TABLE t2 (f2 int,f4 int,f5 int) ;
INSERT IGNORE INTO t2 VALUES (8,0,0),(5,0,0);
CREATE TABLE t3 (f4 int,KEY (f4)) ;
INSERT IGNORE INTO t3 VALUES (0),(0);
set @@optimizer_switch='semijoin=off';
EXPLAIN
SELECT * FROM t1 WHERE
(SELECT f2 FROM t2
WHERE f4 <= ALL
(SELECT SQ1_t1.f4
FROM t3 AS SQ1_t1 JOIN t3 AS SQ1_t3 ON SQ1_t3.f4
GROUP BY SQ1_t1.f4));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
3	SUBQUERY	SQ1_t1	index	NULL	f4	5	NULL	2	Using index; Using temporary
3	SUBQUERY	SQ1_t3	index	f4	f4	5	NULL	2	Using where; Using index; Using join buffer (flat, BNL join)
drop table t1, t2, t3;
#
# BUG#52317: Assertion failing in Field_varstring::store() 
# 	    at field.cc:6833
#
CREATE TABLE t1 (i INTEGER);
INSERT INTO t1 VALUES (1);
CREATE TABLE t2 (i INTEGER, KEY k(i));
INSERT INTO t2 VALUES (1), (2);
EXPLAIN  
SELECT i FROM t1 WHERE (1) NOT IN (SELECT i FROM t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	t2	index_subquery	k	k	5	const	2	Using index
DROP TABLE t2;
DROP TABLE t1;
#
# LP BUG#680846: Crash in clear_tables() with subqueries
#
CREATE TABLE t1 (f3 int) ;
INSERT IGNORE INTO t1 VALUES (0),(0);
CREATE TABLE t2 (f1 int,f3 int,f4 varchar(32)) ;
INSERT IGNORE INTO t2 VALUES (1,0,'f');
EXPLAIN
SELECT COUNT(t2.f3),
(SELECT COUNT(f3) FROM t1 WHERE t2.f1) AS f9
FROM t2 JOIN t1 ON t1.f3
WHERE ('v') IN (SELECT f4 FROM t2)
GROUP BY f9;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT COUNT(t2.f3),
(SELECT COUNT(f3) FROM t1 WHERE t2.f1) AS f9
FROM t2 JOIN t1 ON t1.f3
WHERE ('v') IN (SELECT f4 FROM t2)
GROUP BY f9;
COUNT(t2.f3)	f9
EXPLAIN
SELECT COUNT(t2.f3),
(SELECT COUNT(f3) FROM t1 WHERE t2.f1) AS f9
FROM t2 JOIN t1 ON t1.f3
WHERE ('v') IN (SELECT f4 FROM t2)
ORDER BY f9;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT COUNT(t2.f3),
(SELECT COUNT(f3) FROM t1 WHERE t2.f1) AS f9
FROM t2 JOIN t1 ON t1.f3
WHERE ('v') IN (SELECT f4 FROM t2)
ORDER BY f9;
COUNT(t2.f3)	f9
0	2
EXPLAIN
SELECT COUNT(t2.f3),
(SELECT t2.f1 FROM t1 limit 1) AS f9
FROM t2 JOIN t1
WHERE ('v') IN (SELECT f4 FROM t2)
GROUP BY f9;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
3	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT COUNT(t2.f3),
(SELECT t2.f1 FROM t1 limit 1) AS f9
FROM t2 JOIN t1
WHERE ('v') IN (SELECT f4 FROM t2)
GROUP BY f9;
COUNT(t2.f3)	f9
EXPLAIN
SELECT COUNT(t2.f3),
(SELECT t2.f1 FROM t1 limit 1) AS f9
FROM t2 JOIN t1
WHERE ('v') IN (SELECT f4 FROM t2)
ORDER BY f9;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
3	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT COUNT(t2.f3),
(SELECT t2.f1 FROM t1 limit 1) AS f9
FROM t2 JOIN t1
WHERE ('v') IN (SELECT f4 FROM t2)
ORDER BY f9;
COUNT(t2.f3)	f9
0	NULL
drop table t1,t2;
#
# LP BUG#682683 Crash in create_tmp_table called from
#               JOIN::init_execution
#
CREATE TABLE t2 (f1 int) ;
INSERT INTO t2 VALUES (1),(2);
CREATE TABLE t1 (f1 int) ;
EXPLAIN
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t1	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
field1
NULL
EXPLAIN
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t1	system	NULL	NULL	NULL	NULL	0	const row not found
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
field1
NULL
NULL
INSERT INTO t1 VALUES (1),(2);
EXPLAIN
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
ERROR 21000: Subquery returns more than 1 row
EXPLAIN
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	
2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
ERROR 21000: Subquery returns more than 1 row
drop table t1,t2;
#
# LP BUG#680943 Assertion `!table || (!table->read_set ||
# bitmap_is_set(table->read_set, field_index))' failed with subquery
#
CREATE TABLE t1 (f1 int,f3 int) ;
INSERT IGNORE INTO t1 VALUES ('6','0'),('4','0');
CREATE TABLE t2 (f1 int,f2 int,f3 int) ;
INSERT IGNORE INTO t2 VALUES ('6','0','0'),('2','0','0');
SELECT f2
FROM (SELECT * FROM t2) AS alias1
WHERE (SELECT SQ2_t2.f1
FROM t1 JOIN t1 AS SQ2_t2 ON SQ2_t2.f3
WHERE SQ2_t2.f3 AND alias1.f1)
ORDER BY f3 ;
f2
drop table t1,t2;
#
# LP BUG#715062: Wrong result with VIEW + UNION + subquery in maria-5.3-mwl89
#
create table t1 (f1 int);
create table t2 (f2 int);
create table t3 (f3 int);
insert into t1 values (2);
insert into t2 values (2);
insert into t3 values (7);
CREATE VIEW v1 AS SELECT 2 UNION SELECT 2 ;
CREATE VIEW v2 AS SELECT * from t1 UNION SELECT * from t2 ;
set @save_optimizer_switch=@@optimizer_switch;
SET @@optimizer_switch = 'in_to_exists=off,semijoin=off,materialization=on';
EXPLAIN
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
4	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
bug
EXPLAIN
SELECT ( 5 ) IN ( SELECT * FROM v1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
4	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT ( 5 ) IN ( SELECT * FROM v1 );
( 5 ) IN ( SELECT * FROM v1 )
0
EXPLAIN
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	t1	system	NULL	NULL	NULL	NULL	1	
4	UNION	t2	system	NULL	NULL	NULL	NULL	1	
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
bug
EXPLAIN
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t3	system	NULL	NULL	NULL	NULL	1	
2	SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	
3	DERIVED	t1	system	NULL	NULL	NULL	NULL	1	
4	UNION	t2	system	NULL	NULL	NULL	NULL	1	
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
bug
EXPLAIN
SELECT ( 5 ) IN ( SELECT * FROM v2 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	t1	system	NULL	NULL	NULL	NULL	1	
4	UNION	t2	system	NULL	NULL	NULL	NULL	1	
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT ( 5 ) IN ( SELECT * FROM v2 );
( 5 ) IN ( SELECT * FROM v2 )
0
SET @@optimizer_switch = 'in_to_exists=on,semijoin=off,materialization=off';
EXPLAIN
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
4	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
bug
EXPLAIN
SELECT ( 5 ) IN ( SELECT * FROM v1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
4	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT ( 5 ) IN ( SELECT * FROM v1 );
( 5 ) IN ( SELECT * FROM v1 )
0
EXPLAIN
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	t1	system	NULL	NULL	NULL	NULL	1	
4	UNION	t2	system	NULL	NULL	NULL	NULL	1	
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
bug
EXPLAIN
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t3	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	t1	system	NULL	NULL	NULL	NULL	1	
4	UNION	t2	system	NULL	NULL	NULL	NULL	1	
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
bug
EXPLAIN
SELECT ( 5 ) IN ( SELECT * FROM v2 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	DEPENDENT SUBQUERY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DERIVED	t1	system	NULL	NULL	NULL	NULL	1	
4	UNION	t2	system	NULL	NULL	NULL	NULL	1	
NULL	UNION RESULT	<union3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
SELECT ( 5 ) IN ( SELECT * FROM v2 );
( 5 ) IN ( SELECT * FROM v2 )
0
set @@optimizer_switch=@save_optimizer_switch;
drop table t1,t2,t3;
drop view v1,v2;
#
# LP BUG#715069 Wrong result with GROUP BY inside subquery and materialization=off
#
CREATE TABLE t0 ( f1 int(11), f2 int(11), f10 varchar(1), PRIMARY KEY (f1)) ;
INSERT INTO t0 VALUES (8,8,'u'),(10,5,'o');
CREATE TABLE t1 (f1a int, f2a int not null, f3a varchar(3) not null, PRIMARY KEY (f1a)) ;
INSERT INTO t1 VALUES
(8,8,'a1a'),
(10,5,'b1b');
CREATE TABLE t2 (f1b int, f2b int not null, f3b varchar(3) not null, PRIMARY KEY (f1b)) ;
INSERT INTO t2 VALUES
(10,5,'d1d');
set @save_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch = 'materialization=off';
EXPLAIN
SELECT alias2.f1 , alias2.f2
FROM t0 AS alias1
RIGHT JOIN t0 AS alias2 ON alias2.f10
WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT f2 , f1 FROM t0 GROUP BY f2 , f1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	alias2	ALL	NULL	NULL	NULL	NULL	2	Using where
1	PRIMARY	alias1	index	NULL	PRIMARY	4	NULL	2	Using where; Using index
2	DEPENDENT SUBQUERY	t0	ALL	NULL	NULL	NULL	NULL	2	
SELECT alias2.f1 , alias2.f2
FROM t0 AS alias1
RIGHT JOIN t0 AS alias2 ON alias2.f10
WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT f2 , f1 FROM t0 GROUP BY f2 , f1 );
f1	f2
8	8
Warnings:
Warning	1292	Truncated incorrect DOUBLE value: 'u'
EXPLAIN
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT f1a, f2a FROM t1 GROUP BY f1a, f2a);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT f1a, f2a FROM t1 GROUP BY f1a, f2a);
f1b	f2b	f3b
10	5	d1d
EXPLAIN
SELECT * FROM t2 WHERE (f1b) IN (SELECT f1a FROM t1 GROUP BY f1a, f2a);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT * FROM t2 WHERE (f1b) IN (SELECT f1a FROM t1 GROUP BY f1a, f2a);
f1b	f2b	f3b
10	5	d1d
SET @@optimizer_switch = 'materialization=on';
EXPLAIN
SELECT alias2.f1 , alias2.f2
FROM t0 AS alias1
RIGHT JOIN t0 AS alias2 ON alias2.f10
WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT f2 , f1 FROM t0 GROUP BY f2 , f1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	alias2	ALL	NULL	NULL	NULL	NULL	2	Using where
1	PRIMARY	alias1	index	NULL	PRIMARY	4	NULL	2	Using where; Using index
2	SUBQUERY	t0	ALL	NULL	NULL	NULL	NULL	2	
SELECT alias2.f1 , alias2.f2
FROM t0 AS alias1
RIGHT JOIN t0 AS alias2 ON alias2.f10
WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT f2 , f1 FROM t0 GROUP BY f2 , f1 );
f1	f2
8	8
Warnings:
Warning	1292	Truncated incorrect DOUBLE value: 'u'
EXPLAIN
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT f1a, f2a FROM t1 GROUP BY f1a, f2a);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT f1a, f2a FROM t1 GROUP BY f1a, f2a);
f1b	f2b	f3b
10	5	d1d
EXPLAIN
SELECT * FROM t2 WHERE (f1b) IN (SELECT f1a FROM t1 GROUP BY f1a, f2a);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
SELECT * FROM t2 WHERE (f1b) IN (SELECT f1a FROM t1 GROUP BY f1a, f2a);
f1b	f2b	f3b
10	5	d1d
set @@optimizer_switch=@save_optimizer_switch;
drop table t0,t1,t2;
#                                                                                                                                                     
# LP BUG#715759 Wrong result with in_to_exists=on in maria-5.3-mwl89
#                                                                                                                                                     
set @save_optimizer_switch=@@optimizer_switch;
CREATE TABLE t1 (a1 int, a2 int) ;
INSERT INTO t1 VALUES (1, 2);
INSERT INTO t1 VALUES (3, 4);
CREATE TABLE t2 (b1 int, b2 int) ;
INSERT INTO t2 VALUES (1, 2);
SET @@optimizer_switch = 'in_to_exists=on,materialization=off,semijoin=off';
EXPLAIN SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);
a1	a2
set @@optimizer_switch=@save_optimizer_switch;
drop table t1, t2;
#                                                                                                                                                     
# LP BUG#772309 join_tab_cmp_straight(): Assertion `!jt2->emb_sj_nest' failed in maria-5.3-mwl89 with semijoin
#                                                                                                                                                     
CREATE TABLE t1 ( f2 int) ;
INSERT INTO t1 VALUES (0),(0);
CREATE TABLE t2 ( f1 int NOT NULL ) ;
INSERT INTO t2 VALUES (0),(0);
CREATE TABLE t3 ( f1 int NOT NULL , f2 int) ;
INSERT INTO t3 VALUES (0,0), (0,0);
EXPLAIN SELECT STRAIGHT_JOIN (
SELECT f2 FROM t1 WHERE ( f2 ) IN ( SELECT t3.f2 FROM t3 JOIN t2 ON t2.f1 = 1 )
);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DEPENDENT SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	2	Using where
3	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
SELECT STRAIGHT_JOIN (
SELECT f2 FROM t1 WHERE ( f2 ) IN ( SELECT t3.f2 FROM t3 JOIN t2 ON t2.f1 = 1 )
);
(
SELECT f2 FROM t1 WHERE ( f2 ) IN ( SELECT t3.f2 FROM t3 JOIN t2 ON t2.f1 = 1 )
)
NULL
drop table t1, t2, t3;
#                                                                                                                                                     
# LP BUG#777597 Wrong result with multipart keys, in_to_exists=on, NOT IN in MWL#89
#                                                                                                                                                     
CREATE TABLE t1 ( f4 int);
INSERT IGNORE INTO t1 VALUES (2),(2);
CREATE TABLE t2 ( f3 int, f10 int, KEY (f10,f3) );
INSERT IGNORE INTO t2 VALUES (6, 1), (6, 1);
CREATE TABLE t3 ( f10 int );
INSERT IGNORE INTO t3 VALUES (1);
SET SESSION optimizer_switch='in_to_exists=on,materialization=off';
EXPLAIN
SELECT * FROM t1 WHERE ( 6 ) NOT IN ( SELECT t2.f3 FROM t2 JOIN t3 ON t3.f10 = t2.f10);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
2	DEPENDENT SUBQUERY	t3	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	t2	ref_or_null	f10	f10	10	const,const	2	Using where; Using index
SELECT * FROM t1 WHERE ( 6 ) NOT IN ( SELECT t2.f3 FROM t2 JOIN t3 ON t3.f10 = t2.f10);
f4
drop table t1,t2,t3;
#                                                                                                                                                     
# LP BUG#778413 Third crash in select_describe() in maria-5.3-mwl89
#                                                                                                                                                     
CREATE TABLE t1 ( f11 int) ;
INSERT INTO t1 VALUES (1),(1);
CREATE TABLE t2 ( f1 int NOT NULL) ;
INSERT INTO t2 VALUES (20);
CREATE TABLE t3 (f3 int) ;
INSERT INTO t3 VALUES (2),(2);
EXPLAIN SELECT * FROM t2
WHERE t2.f1 = (
SELECT MAX( f3 ) FROM t3
WHERE EXISTS (
SELECT DISTINCT f11
FROM t1));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	2	
3	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using temporary
drop table t1, t2, t3;
#
# LP BUG#802979 Assertion `table->key_read == 0' in close_thread_table
#
CREATE TABLE t1 ( f1 int, f2 int , KEY (f1)) ;
INSERT IGNORE INTO t1 VALUES (1,0),(5,0);
CREATE TABLE t2 ( f1 int, f2 int , KEY (f1)) ;
INSERT IGNORE INTO t2 VALUES (1,0),(5,0);
CREATE TABLE t3 ( f1 int, f2 int , KEY (f1)) ;
INSERT IGNORE INTO t3 VALUES (1,0),(5,0);
CREATE TABLE t4 ( f1 int, f2 int , KEY (f1)) ;
INSERT IGNORE INTO t4 VALUES (1,0),(5,0);
EXPLAIN
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
WHERE EXISTS (SELECT DISTINCT f1 FROM t4))
AND t2.f2 = t1.f1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ref	f1	f1	5	const	0	Using index condition
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	2	
3	SUBQUERY	t4	index	NULL	f1	5	NULL	2	Using index; Using temporary
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
WHERE EXISTS (SELECT DISTINCT f1 FROM t4))
AND t2.f2 = t1.f1;
ERROR 21000: Subquery returns more than 1 row
EXPLAIN
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
WHERE EXISTS (SELECT DISTINCT f1 FROM t4) LIMIT 1)
AND t2.f2 = t1.f1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ref	f1	f1	5	const	0	Using index condition
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	2	
3	SUBQUERY	t4	index	NULL	f1	5	NULL	2	Using index; Using temporary
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
WHERE EXISTS (SELECT DISTINCT f1 FROM t4) LIMIT 1)
AND t2.f2 = t1.f1;
f1	f2	f1	f2
drop table t1,t2,t3,t4;
#
# LP BUG#806943 Second crash with select_describe with nested subqueries in maria-5.3
#
CREATE TABLE t1 ( f4 int) ;
INSERT INTO t1 VALUES (0),(0);
CREATE TABLE t2 ( f2 int) ;
CREATE TABLE t3 ( f1 int NOT NULL );
CREATE TABLE t4 ( f2 int, f3 int) ;
INSERT INTO t4 VALUES (8,0),(3,0);
EXPLAIN SELECT *
FROM t2, t3
WHERE t3.f1 = (
SELECT SUM( f2 )
FROM t4
WHERE EXISTS (
SELECT DISTINCT f4
FROM t1));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	SUBQUERY	t4	ALL	NULL	NULL	NULL	NULL	2	
3	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using temporary
SELECT *
FROM t2, t3
WHERE t3.f1 = (
SELECT SUM( f2 )
FROM t4
WHERE EXISTS (
SELECT DISTINCT f4
FROM t1));
f2	f1
drop table t1, t2, t3, t4;
#
# LP BUG#611690 Crash in select_describe() with nested subqueries
#
CREATE TABLE t1 (
col_int_key int(11) DEFAULT NULL,
col_varchar_key varchar(1) DEFAULT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
KEY col_int_key (col_int_key),
KEY col_varchar_key (col_varchar_key,col_int_key)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES (8,'v','v');
INSERT INTO t1 VALUES (9,'r','r');
CREATE TABLE t2 (
col_int_key int(11) DEFAULT NULL,
col_varchar_key varchar(1) DEFAULT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
KEY col_int_key (col_int_key),
KEY col_varchar_key (col_varchar_key,col_int_key)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
INSERT INTO t2 VALUES (2,'w','w');
INSERT INTO t2 VALUES (9,'m','m');
set @old_optimizer_switch = @@optimizer_switch;
set @@optimizer_switch='subquery_cache=off,materialization=on,in_to_exists=off,semijoin=off';
EXPLAIN
SELECT col_int_key
FROM t2
WHERE (SELECT SUBQUERY2_t1.col_int_key
FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
ON SUBQUERY2_t2.col_varchar_key
WHERE SUBQUERY2_t2.col_varchar_nokey IN
(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	index	NULL	col_int_key	5	NULL	2	Using index
2	SUBQUERY	SUBQUERY2_t1	index	NULL	col_int_key	5	NULL	2	Using index
2	SUBQUERY	SUBQUERY2_t2	ALL	col_varchar_key	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
3	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using temporary
SELECT col_int_key
FROM t2
WHERE (SELECT SUBQUERY2_t1.col_int_key
FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
ON SUBQUERY2_t2.col_varchar_key
WHERE SUBQUERY2_t2.col_varchar_nokey IN
(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
col_int_key
Warnings:
Warning	1292	Truncated incorrect DOUBLE value: 'v'
Warning	1292	Truncated incorrect DOUBLE value: 'r'
set @@optimizer_switch='subquery_cache=off,materialization=off,in_to_exists=on,semijoin=off';
EXPLAIN
SELECT col_int_key
FROM t2
WHERE (SELECT SUBQUERY2_t1.col_int_key
FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
ON SUBQUERY2_t2.col_varchar_key
WHERE SUBQUERY2_t2.col_varchar_nokey IN
(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	index	NULL	col_int_key	5	NULL	2	Using index
2	SUBQUERY	SUBQUERY2_t1	index	NULL	col_int_key	5	NULL	2	Using index
2	SUBQUERY	SUBQUERY2_t2	ALL	col_varchar_key	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
3	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using temporary
SELECT col_int_key
FROM t2
WHERE (SELECT SUBQUERY2_t1.col_int_key
FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
ON SUBQUERY2_t2.col_varchar_key
WHERE SUBQUERY2_t2.col_varchar_nokey IN
(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
col_int_key
Warnings:
Warning	1292	Truncated incorrect DOUBLE value: 'v'
Warning	1292	Truncated incorrect DOUBLE value: 'r'
drop table t1, t2;
set @@optimizer_switch = @old_optimizer_switch;
#
# LP BUG#612543 Crash in Item_field::used_tables() with view + subquery + prepared statements
#
CREATE TABLE t1 ( f1 int(11), f2 varchar(1));
CREATE TABLE t2 ( f3 varchar(1));
insert into t1 values (2,'x'), (5,'y');
insert into t2 values ('x'), ('z');
CREATE VIEW v2 AS SELECT * FROM t2;
set @old_optimizer_switch = @@optimizer_switch;
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off,subquery_cache=off';
EXPLAIN SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
PREPARE st1 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
EXECUTE st1;
f1	f2	f3
2	x	x
5	y	x
EXECUTE st1;
f1	f2	f3
2	x	x
5	y	x
set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off,subquery_cache=off';
EXPLAIN SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
PREPARE st2 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
EXECUTE st2;
f1	f2	f3
2	x	x
5	y	x
EXECUTE st2;
f1	f2	f3
2	x	x
5	y	x
set @@optimizer_switch='materialization=on,in_to_exists=on,semijoin=off,subquery_cache=off';
EXPLAIN SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 );
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
PREPARE st3 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
EXECUTE st3;
f1	f2	f3
2	x	x
5	y	x
EXECUTE st3;
f1	f2	f3
2	x	x
5	y	x
set @@optimizer_switch = @old_optimizer_switch;
drop table t1, t2;
drop view v2;
#
# LP BUG#611396 RQG: crash in Item_field::register_field_in_read_map with semijoin=off
# and prepared statements and materialization
CREATE TABLE t1 ( f1 int(11), f2 int(11)) ;
CREATE TABLE t2 ( f1 int(11), f4 varchar(1), PRIMARY KEY (f1)) ;
INSERT INTO t2 VALUES ('23','j'),('24','e');
CREATE TABLE t3 ( f1 int(11), f4 varchar(1)) ;
INSERT INTO t3 VALUES ('8','j');
set @old_optimizer_switch = @@optimizer_switch;
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
EXPLAIN
SELECT t2.f1, (SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
FROM t2 JOIN t3 ON t3.f4 = t2.f4
WHERE t3.f1 = 8
GROUP BY 1, 2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t3	system	NULL	NULL	NULL	NULL	1	Using temporary; Using filesort
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
2	SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
3	SUBQUERY	t1	system	NULL	NULL	NULL	NULL	0	const row not found
PREPARE st1 FROM "
SELECT t2.f1, (SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
FROM t2 JOIN t3 ON t3.f4 = t2.f4
WHERE t3.f1 = 8
GROUP BY 1, 2";
EXECUTE st1;
f1	(SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
23	NULL
EXECUTE st1;
f1	(SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
23	NULL
set @@optimizer_switch = @old_optimizer_switch;
drop table t1, t2, t3;
#
# LP BUG#611382 RQG: Query returns extra rows when executed with materialization=on
#
CREATE TABLE t1 ( f4 varchar(1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (NULL);
CREATE TABLE t2 ( f2 date, f3 varchar(1), f4 varchar(1)) ;
INSERT INTO t2 VALUES ('2005-05-03','c','c'),('1900-01-01','d','d');
CREATE TABLE t3 ( f3 varchar(1)) ;
INSERT INTO t3 VALUES ('c');
set @old_optimizer_switch = @@optimizer_switch;
set @@optimizer_switch = 'materialization=on,in_to_exists=off,semijoin=off';
EXPLAIN SELECT t1.f4
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	
1	PRIMARY	t3	system	NULL	NULL	NULL	NULL	1	
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	
SELECT t1.f4
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;
f4
set @@optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';
EXPLAIN SELECT t1.f4
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	
1	PRIMARY	t3	system	NULL	NULL	NULL	NULL	1	
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
SELECT t1.f4
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;
f4
set @@optimizer_switch = @old_optimizer_switch;
drop table t1, t2, t3;
#
# LP BUG#782305: Wrong result/valgrind warning in Item_sum_hybrid::any_value()
#
CREATE TABLE t1 ( f1 int) ;
INSERT INTO t1 VALUES (2),(3);
CREATE TABLE t2 (f2 int) ;
INSERT INTO t2 VALUES (2),(3);
PREPARE st1 FROM '
SELECT * FROM t2
WHERE f2 <= SOME ( SELECT f1 FROM t1 );
';
EXECUTE st1;
f2
2
3
EXECUTE st1;
f2
2
3
PREPARE st2 FROM '
SELECT * FROM t2
WHERE f2 <= SOME (SELECT f1-2 FROM t1 UNION SELECT f1-1 FROM t1);
';
EXECUTE st2;
f2
2
EXECUTE st2;
f2
2
drop table t1, t2;
#
# LP BUG#825018: Crash in check_and_do_in_subquery_rewrites() with corrlated subquery in select list
#
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (10,1),(11,7);
CREATE TABLE t2 (a int);
INSERT INTO t2 VALUES (2),(3);
CREATE TABLE t3 (a int, b int);
INSERT INTO t3 VALUES (1,1);
CREATE PROCEDURE sp1 () LANGUAGE SQL
SELECT (SELECT t1.a
FROM t1
WHERE t1.b = t3.b
AND t1.b IN ( SELECT a FROM t2 )) sq
FROM t3
GROUP BY 1;
CALL sp1();
sq
NULL
CALL sp1();
sq
NULL
drop procedure sp1;
prepare st1 from "
SELECT (SELECT t1.a
        FROM t1
        WHERE t1.b = t3.b
        AND t1.b IN ( SELECT a FROM t2 )) sq
FROM t3
GROUP BY 1";
execute st1;
sq
NULL
execute st1;
sq
NULL
deallocate prepare st1;
drop table t1, t2, t3;
set optimizer_switch=@subselect4_tmp;
#
# LP BUG#833702 Wrong result with nested IN and singlerow subqueries and equality propagation
#
CREATE TABLE t2 (c int , a int, b int);
INSERT INTO t2 VALUES (10,7,0);
CREATE TABLE t3 (a int, b int) ;
INSERT INTO t3 VALUES (5,0),(7,0);
CREATE TABLE t4 (a int);
INSERT INTO t4 VALUES (2),(8);
set @@optimizer_switch='semijoin=off,in_to_exists=on,materialization=off,subquery_cache=off';
SELECT * FROM t2
WHERE t2.b IN (SELECT b FROM t3 WHERE t3.a = t2.a AND a < SOME (SELECT * FROM t4))
OR ( t2.c > 242 );
c	a	b
10	7	0
EXPLAIN SELECT * FROM t2
WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.a < ANY (SELECT t4.a FROM t4) and t3.a = 7);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
2	DEPENDENT SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	2	Using where
3	SUBQUERY	t4	ALL	NULL	NULL	NULL	NULL	2	
SELECT * FROM t2
WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.a < ANY (SELECT t4.a FROM t4) and t3.a = 7);
c	a	b
10	7	0
drop table t2, t3, t4;
set optimizer_switch=@subselect4_tmp;
SET optimizer_switch= @@global.optimizer_switch;
set @@tmp_table_size= @@global.tmp_table_size;