mariadb/mysql-test/r/subselect_sj_jcl6.result

set @save_optimizer_switch_jcl6=@@optimizer_switch;
set @@optimizer_switch='semijoin_with_cache=on';
set @@optimizer_switch='outer_join_with_cache=on';
set join_cache_level=6;
show variables like 'join_cache_level';
Variable_name	Value
join_cache_level	6
drop table if exists t0, t1, t2, t3, t4, t10, t11, t12;
set @save_optimizer_switch=@@optimizer_switch;
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1(a int, b int);
insert into t1 values (0,0),(1,1),(2,2);
create table t2 as select * from t1;
create table t11(a int, b int);
create table t10 (pk int, a int, primary key(pk));
insert into t10 select a,a from t0;
create table t12 like t10;
insert into t12 select * from t10;
Flattened because of dependency, t10=func(t1)
explain select * from t1 where a in (select pk from t10);
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	t10	eq_ref	PRIMARY	PRIMARY	4	test.t1.a	1	Using index
select * from t1 where a in (select pk from t10);
a	b
0	0
1	1
2	2
A confluent case of dependency
explain select * from t1 where a in (select a from t10 where pk=12);
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
select * from t1 where a in (select a from t10 where pk=12);
a	b
explain select * from t1 where a in (select a from t10 where pk=9);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t10	const	PRIMARY	PRIMARY	4	const	1	
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	Using where
select * from t1 where a in (select a from t10 where pk=9);
a	b
An empty table inside
explain select * from t1 where a in (select a from t11);
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
select * from t1 where a in (select a from t11);
a	b
explain select * from t1 where a in (select pk from t10) and b in (select pk from t10);
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	t10	eq_ref	PRIMARY	PRIMARY	4	test.t1.a	1	Using index
1	PRIMARY	t10	eq_ref	PRIMARY	PRIMARY	4	test.t1.b	1	Using index
select * from t1 where a in (select pk from t10) and b in (select pk from t10);
a	b
0	0
1	1
2	2
flattening a nested subquery
explain select * from t1 where a in (select pk from t10 where t10.a in (select pk from t12));
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	t10	eq_ref	PRIMARY	PRIMARY	4	test.t1.a	1	Using where; Using join buffer
1	PRIMARY	t12	eq_ref	PRIMARY	PRIMARY	4	test.t10.a	1	Using index
select * from t1 where a in (select pk from t10 where t10.a in (select pk from t12));
a	b
0	0
1	1
2	2
flattening subquery w/ several tables
explain extended select * from t1 where a in (select t10.pk from t10, t12 where t12.pk=t10.a);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
1	PRIMARY	t10	eq_ref	PRIMARY	PRIMARY	4	test.t1.a	1	100.00	Using where; Using join buffer
1	PRIMARY	t12	eq_ref	PRIMARY	PRIMARY	4	test.t10.a	1	100.00	Using index
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t12` join `test`.`t1` where ((`test`.`t10`.`pk` = `test`.`t1`.`a`) and (`test`.`t12`.`pk` = `test`.`t10`.`a`))
subqueries within outer joins go into ON expr.
explAin extended
select * from t1 left join (t2 A, t2 B) on ( A.A= t1.A And B.A in (select pk from t10));
id	select_type	tABle	type	possiBle_keys	key	key_len	ref	rows	filtered	ExtrA
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
1	PRIMARY	A	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join Buffer
1	PRIMARY	B	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join Buffer
2	DEPENDENT SUBQUERY	t10	unique_suBquery	PRIMARY	PRIMARY	4	func	1	100.00	Using index
Warnings:
Note	1003	select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`A`.`A` AS `A`,`test`.`A`.`B` AS `B`,`test`.`B`.`A` AS `A`,`test`.`B`.`B` AS `B` from `test`.`t1` left join (`test`.`t2` `A` join `test`.`t2` `B`) on(((`test`.`A`.`A` = `test`.`t1`.`A`) And <in_optimizer>(`test`.`B`.`A`,<exists>(<primAry_index_lookup>(<cAche>(`test`.`B`.`A`) in t10 on PRIMARY))))) where 1
t2 should be wrapped into OJ-nest, so we have "t1 LJ (t2 J t10)"
explAin extended
select * from t1 left join t2 on (t2.A= t1.A And t2.A in (select pk from t10));
id	select_type	tABle	type	possiBle_keys	key	key_len	ref	rows	filtered	ExtrA
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join Buffer
2	DEPENDENT SUBQUERY	t10	unique_suBquery	PRIMARY	PRIMARY	4	func	1	100.00	Using index
Warnings:
Note	1003	select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`t2`.`A` AS `A`,`test`.`t2`.`B` AS `B` from `test`.`t1` left join `test`.`t2` on(((`test`.`t2`.`A` = `test`.`t1`.`A`) And <in_optimizer>(`test`.`t2`.`A`,<exists>(<primAry_index_lookup>(<cAche>(`test`.`t2`.`A`) in t10 on PRIMARY))))) where 1
we shouldn't flatten if we're going to get a join of > MAX_TABLES.
explain select * from 
t1 s00, t1 s01,  t1 s02, t1 s03, t1 s04,t1 s05,t1 s06,t1 s07,t1 s08,t1 s09,
t1 s10, t1 s11,  t1 s12, t1 s13, t1 s14,t1 s15,t1 s16,t1 s17,t1 s18,t1 s19,
t1 s20, t1 s21,  t1 s22, t1 s23, t1 s24,t1 s25,t1 s26,t1 s27,t1 s28,t1 s29,
t1 s30, t1 s31,  t1 s32, t1 s33, t1 s34,t1 s35,t1 s36,t1 s37,t1 s38,t1 s39,
t1 s40, t1 s41,  t1 s42, t1 s43, t1 s44,t1 s45,t1 s46,t1 s47,t1 s48,t1 s49
where
s00.a in (
select m00.a from
t1 m00, t1 m01,  t1 m02, t1 m03, t1 m04,t1 m05,t1 m06,t1 m07,t1 m08,t1 m09,
t1 m10, t1 m11,  t1 m12, t1 m13, t1 m14,t1 m15,t1 m16,t1 m17,t1 m18,t1 m19
);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	s00	ALL	NULL	NULL	NULL	NULL	3	Using where
1	PRIMARY	s01	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s02	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s03	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s04	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s05	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s06	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s07	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s08	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s09	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s10	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s11	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s12	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s13	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s14	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s15	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s16	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s17	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s18	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s19	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s20	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s21	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s22	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s23	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s24	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s25	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s26	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s27	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s28	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s29	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s30	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s31	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s32	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s33	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s34	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s35	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s36	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s37	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s38	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s39	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s40	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s41	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s42	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s43	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s44	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s45	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s46	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s47	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s48	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
1	PRIMARY	s49	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m00	ALL	NULL	NULL	NULL	NULL	3	Using where
2	DEPENDENT SUBQUERY	m01	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m02	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m03	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m04	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m05	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m06	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m07	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m08	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m09	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m10	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m11	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m12	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m13	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m14	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m15	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m16	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m17	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m18	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
2	DEPENDENT SUBQUERY	m19	ALL	NULL	NULL	NULL	NULL	3	Using where; Using join buffer
select * from
t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t10)) 
where t1.a < 5;
a	b	a	b
0	0	0	0
1	1	1	1
2	2	2	2
prepare s1 from
' select * from
    t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t10))
  where t1.a < 5';
execute s1;
a	b	a	b
0	0	0	0
1	1	1	1
2	2	2	2
execute s1;
a	b	a	b
0	0	0	0
1	1	1	1
2	2	2	2
insert into t1 select (A.a + 10 * B.a),1 from t0 A, t0 B;
explain extended select * from t1 where a in (select pk from t10 where pk<3);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t10	range	PRIMARY	PRIMARY	4	NULL	4	100.00	Using where; Using index
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	103	100.00	Using where; Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t1` where ((`test`.`t1`.`a` = `test`.`t10`.`pk`) and (`test`.`t10`.`pk` < 3))
drop table t0, t1, t2;
drop table t10, t11, t12;

Bug#37899: Wrongly checked optimization prerequisite caused failed
assertion.

CREATE TABLE t1 (
`pk` int(11),
`varchar_nokey` varchar(5)
);
INSERT INTO t1 VALUES
(1,'qk'),(2,'j'),(3,'aew');
SELECT *
FROM t1
WHERE varchar_nokey IN (
SELECT
varchar_nokey
FROM
t1
) XOR pk = 30;
pk	varchar_nokey
1	qk
2	j
3	aew
drop table t1;
#
# BUG#41842: Semi-join materialization strategy crashes when the upper query has HAVING
#
CREATE TABLE t1 (
pk int(11) NOT NULL AUTO_INCREMENT,
int_nokey int(11) NOT NULL,
time_key time NOT NULL,
datetime_key datetime NOT NULL,
datetime_nokey datetime NOT NULL,
varchar_key varchar(1) NOT NULL,
varchar_nokey varchar(1) NOT NULL,
PRIMARY KEY (pk),
KEY time_key (time_key),
KEY datetime_key (datetime_key),
KEY varchar_key (varchar_key)
);
INSERT INTO t1 VALUES 
(1,0, '00:16:10','2008-09-03 14:25:40','2008-09-03 14:25:40','h','h'),
(2,7, '00:00:00','2001-01-13 00:00:00','2001-01-13 00:00:00','',''),
(3,0, '00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','x','x'),
(4,2, '16:29:24','2000-10-16 01:39:08','2000-10-16 01:39:08','w','w'),
(5,1, '09:23:32','0000-00-00 00:00:00','0000-00-00 00:00:00','p','p'),
(6,3, '00:00:00','2007-12-02 00:00:00','2007-12-02 00:00:00','o','o'),
(7,3, '00:00:00','2008-09-11 00:00:00','2008-09-11 00:00:00','',''),
(8,0, '13:59:04','0000-00-00 00:00:00','0000-00-00 00:00:00','s','s'),
(9,7, '09:01:06','0000-00-00 00:00:00','0000-00-00 00:00:00','d','d'),
(10,5,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','n','n'),
(11,0,'21:06:46','0000-00-00 00:00:00','0000-00-00 00:00:00','o','o'),
(12,2,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','',''),
(13,6,'14:45:34','2003-07-28 02:34:08','2003-07-28 02:34:08','w','w'),
(14,1,'15:04:12','0000-00-00 00:00:00','0000-00-00 00:00:00','o','o'),
(15,0,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','x','x'),
(16,0,'15:55:23','2004-03-17 00:32:27','2004-03-17 00:32:27','p','p'),
(17,1,'16:30:00','2004-12-27 19:20:00','2004-12-27 19:20:00','d','d'),
(18,0,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','h','h'),
(19,0,'14:13:26','2008-11-09 05:53:48','2008-11-09 05:53:48','o','o'),
(20,0,'00:00:00','2009-10-11 06:58:04','2009-10-11 06:58:04','k','k');
CREATE TABLE t2 (
pk int(11) NOT NULL AUTO_INCREMENT,
int_nokey int(11) NOT NULL,
time_key time NOT NULL,
datetime_key datetime NOT NULL,
datetime_nokey datetime NOT NULL,
varchar_key varchar(1) NOT NULL,
varchar_nokey varchar(1) NOT NULL,
PRIMARY KEY (pk),
KEY time_key (time_key),
KEY datetime_key (datetime_key),
KEY varchar_key (varchar_key)
);
INSERT INTO t2 VALUES 
(10,0,'19:39:13','0000-00-00 00:00:00','0000-00-00 00:00:00','g','g'),
(11,8,'03:43:53','0000-00-00 00:00:00','0000-00-00 00:00:00','b','b');
SELECT OUTR.datetime_nokey AS X FROM t1 AS OUTR 
WHERE 
OUTR.varchar_nokey IN (SELECT 
INNR . varchar_nokey AS Y 
FROM t2 AS INNR 
WHERE
INNR . datetime_key >= INNR . time_key OR 
INNR . pk = INNR . int_nokey  
) 
AND OUTR . varchar_nokey <= 'w' 
HAVING X > '2012-12-12';
X
drop table t1, t2;
#
# Bug#45191: Incorrectly initialized semi-join led to a wrong result.
#
CREATE TABLE STAFF (EMPNUM   CHAR(3) NOT NULL,
EMPNAME  CHAR(20), GRADE DECIMAL(4), CITY CHAR(15));
CREATE TABLE PROJ (PNUM CHAR(3) NOT NULL,
PNAME    CHAR(20), PTYPE CHAR(6),
BUDGET   DECIMAL(9),
CITY     CHAR(15));
CREATE TABLE WORKS (EMPNUM CHAR(3) NOT NULL,
PNUM CHAR(3) NOT NULL, HOURS DECIMAL(5));
INSERT INTO STAFF VALUES ('E1','Alice',12,'Deale');
INSERT INTO STAFF VALUES ('E2','Betty',10,'Vienna');
INSERT INTO STAFF VALUES ('E3','Carmen',13,'Vienna');
INSERT INTO STAFF VALUES ('E4','Don',12,'Deale');
INSERT INTO STAFF VALUES ('E5','Ed',13,'Akron');
INSERT INTO PROJ VALUES  ('P1','MXSS','Design',10000,'Deale');
INSERT INTO PROJ VALUES  ('P2','CALM','Code',30000,'Vienna');
INSERT INTO PROJ VALUES  ('P3','SDP','Test',30000,'Tampa');
INSERT INTO PROJ VALUES  ('P4','SDP','Design',20000,'Deale');
INSERT INTO PROJ VALUES  ('P5','IRM','Test',10000,'Vienna');
INSERT INTO PROJ VALUES  ('P6','PAYR','Design',50000,'Deale');
INSERT INTO WORKS VALUES  ('E1','P1',40);
INSERT INTO WORKS VALUES  ('E1','P2',20);
INSERT INTO WORKS VALUES  ('E1','P3',80);
INSERT INTO WORKS VALUES  ('E1','P4',20);
INSERT INTO WORKS VALUES  ('E1','P5',12);
INSERT INTO WORKS VALUES  ('E1','P6',12);
INSERT INTO WORKS VALUES  ('E2','P1',40);
INSERT INTO WORKS VALUES  ('E2','P2',80);
INSERT INTO WORKS VALUES  ('E3','P2',20);
INSERT INTO WORKS VALUES  ('E4','P2',20);
INSERT INTO WORKS VALUES  ('E4','P4',40);
INSERT INTO WORKS VALUES  ('E4','P5',80);
set optimizer_switch=@save_optimizer_switch;
set optimizer_switch='materialization=off';
explain SELECT EMPNUM, EMPNAME
FROM STAFF
WHERE EMPNUM IN
(SELECT EMPNUM  FROM WORKS
WHERE PNUM IN
(SELECT PNUM  FROM PROJ));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	STAFF	ALL	NULL	NULL	NULL	NULL	5	
1	PRIMARY	PROJ	ALL	NULL	NULL	NULL	NULL	6	Using join buffer
1	PRIMARY	WORKS	ALL	NULL	NULL	NULL	NULL	12	Using where; FirstMatch(STAFF); Using join buffer
SELECT EMPNUM, EMPNAME
FROM STAFF
WHERE EMPNUM IN
(SELECT EMPNUM  FROM WORKS
WHERE PNUM IN
(SELECT PNUM  FROM PROJ));
EMPNUM	EMPNAME
E1	Alice
E2	Betty
E3	Carmen
E4	Don
set optimizer_switch=@save_optimizer_switch;
drop table STAFF,WORKS,PROJ;
# End of bug#45191
#
# Bug#46550 Azalea returning duplicate results for some IN subqueries
# w/ semijoin=on
#
DROP TABLE IF EXISTS t0, t1, t2;
CREATE TABLE t0 (
int_key int(11) DEFAULT NULL,
varchar_key varchar(1) DEFAULT NULL,
varchar_nokey varchar(1) DEFAULT NULL,
KEY int_key (int_key),
KEY varchar_key (varchar_key,int_key)
);
INSERT INTO t0 VALUES
(1,'m','m'),
(40,'h','h'),
(1,'r','r'),
(1,'h','h'),
(9,'x','x'),
(NULL,'q','q'),
(NULL,'k','k'),
(7,'l','l'),
(182,'k','k'),
(202,'a','a'),
(7,'x','x'),
(6,'j','j'),
(119,'z','z'),
(4,'d','d'),
(5,'h','h'),
(1,'u','u'),
(3,'q','q'),
(7,'a','a'),
(3,'e','e'),
(6,'l','l');
CREATE TABLE t1 (
int_key int(11) DEFAULT NULL,
varchar_key varchar(1) DEFAULT NULL,
varchar_nokey varchar(1) DEFAULT NULL,
KEY int_key (int_key),
KEY varchar_key (varchar_key,int_key)
);
INSERT INTO t1 VALUES (7,NULL,NULL),(4,'x','x');
CREATE TABLE t2 (
int_key int(11) DEFAULT NULL,
varchar_key varchar(1) DEFAULT NULL,
varchar_nokey varchar(1) DEFAULT NULL,
KEY int_key (int_key),
KEY varchar_key (varchar_key,int_key)
);
INSERT INTO t2 VALUES (123,NULL,NULL);
SELECT int_key  
FROM t0  
WHERE varchar_nokey  IN (  
SELECT t1 .varchar_key  from t1
);
int_key
9
7
SELECT t0.int_key  
FROM t0
WHERE t0.varchar_nokey  IN (  
SELECT t1_1 .varchar_key  
FROM t1 AS t1_1  JOIN t1 AS t1_2 ON t1_1 .int_key
);
int_key
9
7
SELECT t0.int_key  
FROM t0, t2
WHERE t0.varchar_nokey  IN (  
SELECT t1_1 .varchar_key  
FROM t1 AS t1_1  JOIN t1 AS t1_2 ON t1_1 .int_key  
);
int_key
9
7
DROP TABLE t0, t1, t2;
# End of bug#46550
#
# Bug #46744 Crash in optimize_semijoin_nests on empty view
# with limit and procedure.
#
DROP TABLE IF EXISTS t1, t2;
DROP VIEW IF EXISTS v1;
DROP PROCEDURE IF EXISTS p1;
CREATE TABLE t1 ( f1 int );
CREATE TABLE t2 ( f1 int );
insert into t2 values (5), (7);
CREATE OR REPLACE VIEW v1 AS SELECT * FROM t1 LIMIT 2;
create procedure p1() 
select COUNT(*) 
FROM v1 WHERE f1 IN 
(SELECT f1 FROM t2 WHERE f1 = ANY (SELECT f1 FROM v1));
SET SESSION optimizer_switch = 'semijoin=on';
CALL p1();
COUNT(*)
0
SET SESSION optimizer_switch = 'semijoin=off';
CALL p1();
COUNT(*)
0
drop table t1, t2;
drop view v1;
drop procedure p1;
set SESSION optimizer_switch=@save_optimizer_switch;
# End of bug#46744

Bug#46797 "Crash in fix_semijoin_strategies_for_picked_join_order 
with semijoin=on"

CREATE TABLE t1 (
varchar_key varchar(1) DEFAULT NULL,
KEY varchar_key (varchar_key)
);
CREATE TABLE t2 (
varchar_key varchar(1) DEFAULT NULL,
KEY varchar_key (varchar_key)
);
INSERT INTO t2 VALUES
(NULL),(NULL),(NULL),(NULL),('a'),('a'),('a'),('b'),('b'),('b'),('b'),('c'),
('c'),('c'),('c'),('c'),('c'),('c'),('d'),('d'),('d'),('d'),('d'),('d'),('e'),
('e'),('e'),('e'),('e'),('e'),('f'),('f'),('f'),('g'),('g'),('h'),('h'),('h'),
('h'),('i'),('j'),('j'),('j'),('k'),('k'),('l'),('l'),('m'),('m'),('m'),('m'),
('n'),('n'),('n'),('o'),('o'),('o'),('p'),('p'),('p'),('q'),('q'),('q'),('r'),
('r'),('r'),('r'),('s'),('s'),('s'),('s'),('t'),('t'),('t'),('t'),('u'),('u'),
('u'),('u'),('v'),('v'),('v'),('v'),('w'),('w'),('w'),('w'),('w'),('w'),('x'),
('x'),('x'),('y'),('y'),('y'),('y'),('z'),('z'),('z'),('z');
CREATE TABLE t3 (
varchar_key varchar(1) DEFAULT NULL,
KEY varchar_key (varchar_key)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
INSERT INTO t3 VALUES
(NULL),('c'),('d'),('e'),('f'),('h'),('j'),('k'),('k'),('m'),('m'),('m'),
('n'),('o'),('r'),('t'),('t'),('u'),('w'),('y');
SELECT varchar_key FROM t3 
WHERE (SELECT varchar_key FROM t3 
WHERE (varchar_key,varchar_key) 
IN (SELECT t1.varchar_key, t2 .varchar_key 
FROM t1 RIGHT JOIN t2 ON t1.varchar_key  
)  
);
varchar_key
DROP TABLE t1, t2, t3;
#
# Bug#46556 Returning incorrect, empty results for some IN subqueries 
#           w/semijoin=on
#
CREATE TABLE t0 (
pk INTEGER,
vkey VARCHAR(1),
vnokey VARCHAR(1),
PRIMARY KEY (pk),
KEY vkey(vkey)
);
INSERT INTO t0 
VALUES (1,'g','g'), (2,'v','v'), (3,'t','t'), (4,'u','u'), (5,'n','n');
EXPLAIN EXTENDED SELECT vkey FROM t0 WHERE pk IN 
(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t0	ALL	PRIMARY	NULL	NULL	NULL	5	100.00	
1	PRIMARY	t1	eq_ref	PRIMARY	PRIMARY	4	test.t0.pk	1	100.00	Using where; Using join buffer
1	PRIMARY	t2	ref	vkey	vkey	4	test.t1.vnokey	2	100.00	Using index; FirstMatch(t1)
Warnings:
Note	1003	select `test`.`t0`.`vkey` AS `vkey` from `test`.`t0` `t1` semi join (`test`.`t0` `t2`) join `test`.`t0` where ((`test`.`t2`.`vkey` = `test`.`t1`.`vnokey`) and (`test`.`t1`.`pk` = `test`.`t0`.`pk`))
SELECT vkey FROM t0 WHERE pk IN 
(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey);
vkey
g
v
t
u
n
DROP TABLE t0;
# End of bug#46556

Bug #48073 Subquery on char columns from view crashes Mysql

DROP TABLE IF EXISTS t1, t2;
DROP VIEW IF EXISTS v1;
CREATE TABLE t1 (
city VARCHAR(50) NOT NULL,
country_id SMALLINT UNSIGNED NOT NULL
);
INSERT INTO t1 VALUES 
('Batna',2),
('Bchar',2),
('Skikda',2),
('Tafuna',3),
('Algeria',2) ;
CREATE TABLE t2 (
country_id SMALLINT UNSIGNED NOT NULL,
country VARCHAR(50) NOT NULL
);
INSERT INTO t2 VALUES
(2,'Algeria'),
(3,'American Samoa') ;
CREATE VIEW v1 AS 
SELECT country_id, country 
FROM t2
WHERE LEFT(country,1) = "A" 
;
SELECT city, country_id
FROM t1
WHERE city IN (
SELECT country 
FROM t2
WHERE LEFT(country, 1) = "A" 
);
city	country_id
Algeria	2
SELECT city, country_id
FROM t1
WHERE city IN (
SELECT country 
FROM v1
);
city	country_id
Algeria	2
drop table t1, t2;
drop view v1;
# End of bug#48073

Bug#48834: Procedure with view + subquery + semijoin=on 
crashes on second call.

SET SESSION optimizer_switch ='semijoin=on';
CREATE TABLE t1 ( t1field integer, primary key (t1field));
CREATE TABLE t2 ( t2field integer, primary key (t2field));
CREATE VIEW v1 AS 
SELECT t1field as v1field
FROM t1 A 
WHERE A.t1field IN (SELECT t1field FROM t2 );
CREATE VIEW v2 AS 
SELECT t2field as v2field
FROM t2 A 
WHERE A.t2field IN (SELECT t2field FROM t2 );
CREATE PROCEDURE p1 () 
BEGIN 
SELECT v1field
FROM v1 
WHERE v1field IN ( SELECT v2field as vf_inner FROM v2 );
END|
INSERT INTO t1 VALUES (1),(2),(3);
INSERT INTO t2 VALUES (2),(3),(4);
CALL p1;
v1field
2
3
CALL p1;
v1field
2
3
DROP TABLE t1,t2;
DROP VIEW v1,v2;
DROP PROCEDURE p1;
set SESSION optimizer_switch=@save_optimizer_switch;
# End of BUG#48834

Bug#49097 subquery with view generates wrong result with
non-prepared statement

DROP TABLE IF EXISTS t1, t2;
DROP VIEW IF EXISTS v1;
CREATE TABLE t1 (
city VARCHAR(50) NOT NULL,
country_id SMALLINT UNSIGNED NOT NULL
);
INSERT INTO t1 VALUES 
('Batna',2),
('Bchar',2),
('Skikda',2),
('Tafuna',3),
('Algeria',2) ;
CREATE TABLE t2 (
country_id SMALLINT UNSIGNED NOT NULL,
country VARCHAR(50) NOT NULL
);
INSERT INTO t2 VALUES
(2,'Algeria'),
(3,'XAmerican Samoa') ;
CREATE VIEW v1 AS 
SELECT country_id, country 
FROM t2
WHERE LEFT(country,1) = "A" 
;
SELECT city, country_id
FROM t1
WHERE country_id IN (
SELECT country_id 
FROM t2
WHERE LEFT(country,1) = "A" 
);
city	country_id
Batna	2
Bchar	2
Skikda	2
Algeria	2
SELECT city, country_id
FROM t1
WHERE country_id IN (
SELECT country_id 
FROM v1
);
city	country_id
Batna	2
Bchar	2
Skikda	2
Algeria	2
PREPARE stmt FROM
"
SELECT city, country_id
FROM t1
WHERE country_id IN (
  SELECT country_id 
  FROM v1
);
";
execute stmt;
city	country_id
Batna	2
Bchar	2
Skikda	2
Algeria	2
deallocate prepare stmt;
drop table t1, t2;
drop view v1;
# End of Bug#49097
# 
# BUG#38075: Wrong result: rows matching a subquery with outer join not returned
# 
DROP TABLE IF EXISTS ot1, it1, it2;
CREATE TABLE it2 (
int_key int(11) NOT NULL,
datetime_key datetime NOT NULL,
KEY int_key (int_key),
KEY datetime_key (datetime_key)
);
INSERT INTO it2 VALUES
(5,'2002-04-10 14:25:30'), (0,'0000-00-00 00:00:00'),
(0,'2006-09-14 04:01:02'), (4,'0000-00-00 00:00:00'),
(8,'0000-00-00 00:00:00'), (5,'0000-00-00 00:00:00'),
(9,'0000-00-00 00:00:00'), (8,'2007-04-01 11:04:17'),
(1,'0000-00-00 00:00:00'), (7,'2009-01-12 00:00:00'),
(0,'2009-06-05 00:00:00'), (3,'2006-02-14 18:06:35'),
(5,'2006-02-21 07:08:16'), (0,'0000-00-00 00:00:00'),
(7,'0000-00-00 00:00:00'), (0,'0000-00-00 00:00:00'),
(0,'2007-02-13 00:00:00'), (1,'0000-00-00 00:00:00'),
(0,'0000-00-00 00:00:00'), (1,'2003-08-11 00:00:00');
CREATE TABLE ot1 (
int_nokey int(11) NOT NULL,
int_key int(11) NOT NULL,
KEY int_key (int_key)
);
INSERT INTO ot1 VALUES
(5,0), (3,0), (0,2), (3,0), (1,3), (0,0), (1,7), (7,0), (1,7), (0,7),
(0,9), (8,2), (4,4), (9,3), (0,9), (2,5), (0,5), (8,0), (5,8), (1,5);
CREATE TABLE it1 (
int_nokey int(11) NOT NULL,
int_key int(11) NOT NULL,
KEY int_key (int_key)
);
INSERT INTO it1 VALUES
(9,5), (0,4);
SELECT int_key FROM ot1
WHERE int_nokey IN (SELECT it2.int_key
FROM it1 LEFT JOIN it2 ON it2.datetime_key);
int_key
0
2
0
7
9
9
5
2
0
0
0
3
7
7
8
0
5
EXPLAIN
SELECT int_key FROM ot1
WHERE int_nokey IN (SELECT it2.int_key
FROM it1 LEFT JOIN it2 ON it2.datetime_key);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	it1	index	NULL	int_key	4	NULL	2	Using index; Start temporary
1	PRIMARY	ot1	ALL	NULL	NULL	NULL	NULL	20	Using join buffer
1	PRIMARY	it2	ALL	NULL	NULL	NULL	NULL	20	Using where; End temporary; Using join buffer
DROP TABLE ot1, it1, it2;
# End of BUG#38075
#
# BUG#31480: Incorrect result for nested subquery when executed via semi join
#
create table t1 (a int not null, b int not null);
create table t2 (c int not null, d int not null);
create table t3 (e int not null);
insert into t1 values (1,10);
insert into t1 values (2,10);
insert into t1 values (1,20);
insert into t1 values (2,20);
insert into t1 values (3,20);
insert into t1 values (2,30);
insert into t1 values (4,40);
insert into t2 values (2,10);
insert into t2 values (2,20);
insert into t2 values (4,10);
insert into t2 values (5,10);
insert into t2 values (3,20);
insert into t2 values (2,40);
insert into t3 values (10);
insert into t3 values (30);
insert into t3 values (10);
insert into t3 values (20);
explain extended
select a from t1
where a in (select c from t2 where d >= some(select e from t3 where b=e));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	6	100.00	Start temporary
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where; End temporary; Using join buffer
3	DEPENDENT SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
Warnings:
Note	1276	Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select 1 from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`))))))
show warnings;
Level	Code	Message
Note	1276	Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select 1 from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`))))))
select a from t1
where a in (select c from t2 where d >= some(select e from t3 where b=e));
a
2
2
3
2
drop table t1, t2, t3;
# 
# Bug#48213 Materialized subselect crashes if using GEOMETRY type
# 
CREATE TABLE t1 (
pk int,
a varchar(1),
b varchar(4),
c tinyblob,
d blob,
e mediumblob,
f longblob,
g tinytext,
h text,
i mediumtext,
j longtext,
k geometry,
PRIMARY KEY (pk)
);
INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo','ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')), (2,'f','ffff','ffff','ffff', 'ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))'));
CREATE TABLE t2 LIKE t1;
INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii','iiii','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')), (2,'f','ffff','ffff','ffff','ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))'));
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	13	func	1	1.00	
2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using MRR
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0);
pk
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`c` = `test`.`t1`.`c`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0);
pk
1
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`d` = `test`.`t1`.`d`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0);
pk
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`e` = `test`.`t1`.`e`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0);
pk
1
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`f` = `test`.`t1`.`f`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0);
pk
1
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`g` = `test`.`t1`.`g`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0);
pk
1
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`h` = `test`.`t1`.`h`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0);
pk
1
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`i` = `test`.`t1`.`i`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0);
pk
1
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`j` = `test`.`t1`.`j`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0);
pk
1
2
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	t2	range	PRIMARY	PRIMARY	4	NULL	2	100.00	Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer
Warnings:
Note	1003	select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`k` = `test`.`t1`.`k`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0);
pk
1
2
DROP TABLE t1, t2;
# End of Bug#48213
# 
# Bug#49198 Wrong result for second call of procedure
#           with view in subselect.
# 
CREATE TABLE t1 (t1field integer, primary key (t1field));
CREATE TABLE t2 (t2field integer, primary key (t2field));
CREATE TABLE t3 (t3field integer, primary key (t3field));
CREATE VIEW v2 AS SELECT * FROM t2;
CREATE VIEW v3 AS SELECT * FROM t3;
INSERT INTO t1 VALUES(1),(2);
INSERT INTO t2 VALUES(1),(2);
INSERT INTO t3 VALUES(1),(2);
PREPARE stmt FROM
"
SELECT t1field
FROM t1
WHERE t1field IN (SELECT * FROM v2);
";
EXECUTE stmt;
t1field
1
2
EXECUTE stmt;
t1field
1
2
PREPARE stmt FROM
"
EXPLAIN
SELECT t1field
FROM t1
WHERE t1field IN (SELECT * FROM v2)
  AND t1field IN (SELECT * FROM v3)
";
EXECUTE stmt;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	index	PRIMARY	PRIMARY	4	NULL	2	Using index
1	PRIMARY	t2	eq_ref	PRIMARY	PRIMARY	4	test.t1.t1field	1	Using index
1	PRIMARY	t3	eq_ref	PRIMARY	PRIMARY	4	test.t1.t1field	1	Using index
EXECUTE stmt;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	index	PRIMARY	PRIMARY	4	NULL	2	Using index
1	SIMPLE	t2	eq_ref	PRIMARY	PRIMARY	4	test.t1.t1field	1	Using index
1	SIMPLE	t3	eq_ref	PRIMARY	PRIMARY	4	test.t1.t1field	1	Using index
DROP TABLE t1, t2, t3;
DROP VIEW v2, v3;
# End of Bug#49198
#
# Bug#45174: Incorrectly applied equality propagation caused wrong
# result on a query with a materialized semi-join.
#
CREATE TABLE `t1` (
`pk` int(11) NOT NULL AUTO_INCREMENT,
`varchar_key` varchar(1) NOT NULL,
`varchar_nokey` varchar(1) NOT NULL,
PRIMARY KEY (`pk`),
KEY `varchar_key` (`varchar_key`)
);
INSERT INTO `t1` VALUES (11,'m','m'),(12,'j','j'),(13,'z','z'),(14,'a','a'),(15,'',''),(16,'e','e'),(17,'t','t'),(19,'b','b'),(20,'w','w'),(21,'m','m'),(23,'',''),(24,'w','w'),(26,'e','e'),(27,'e','e'),(28,'p','p');
CREATE TABLE `t2` (
`varchar_nokey` varchar(1) NOT NULL
);
INSERT INTO `t2` VALUES ('v'),('u'),('n'),('l'),('h'),('u'),('n'),('j'),('k'),('e'),('i'),('u'),('n'),('b'),('x'),(''),('q'),('u');
EXPLAIN EXTENDED SELECT varchar_nokey
FROM t2  
WHERE ( `varchar_nokey`  , `varchar_nokey`  )  IN (  
SELECT `varchar_key`  , `varchar_nokey`  
FROM t1  
WHERE `varchar_nokey`  < 'n' XOR `pk`  )   ;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	18	100.00	
1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	8	func	1	1.00	
2	SUBQUERY	t1	ALL	varchar_key	NULL	NULL	NULL	15	100.00	Using where
Warnings:
Note	1003	select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and ((`test`.`t1`.`varchar_nokey` < 'n') xor `test`.`t1`.`pk`))
SELECT varchar_nokey
FROM t2  
WHERE ( `varchar_nokey`  , `varchar_nokey`  )  IN (  
SELECT `varchar_key`  , `varchar_nokey`  
FROM t1  
WHERE `varchar_nokey`  < 'n' XOR `pk`  )   ;
varchar_nokey
DROP TABLE t1, t2;
# End of the test for bug#45174.
#
# BUG#43768: Prepared query with nested subqueries core dumps on second execution
#
create table t1 (
id int(11) unsigned not null primary key auto_increment,
partner_id varchar(35) not null,
t1_status_id int(10) unsigned
);
insert into t1 values ("1", "partner1", "10"), ("2", "partner2", "10"),
("3", "partner3", "10"), ("4", "partner4", "10");
create table t2 (
id int(11) unsigned not null default '0',
t1_line_id int(11) unsigned not null default '0',
article_id varchar(20),
sequence int(11) not null default '0',
primary key  (id,t1_line_id)
);
insert into t2 values ("1", "1", "sup", "0"), ("2", "1", "sup", "1"),
("2", "2", "sup", "2"), ("2", "3", "sup", "3"),
("2", "4", "imp", "4"), ("3", "1", "sup", "0"),
("4", "1", "sup", "0");
create table t3 (
id int(11) not null default '0',
preceeding_id int(11) not null default '0',
primary key  (id,preceeding_id)
);
create table t4 (
user_id varchar(50) not null,
article_id varchar(20) not null,
primary key  (user_id,article_id)
);
insert into t4 values("nicke", "imp");
prepare stmt from
'select t1.partner_id
from t1
where
  t1.id in (
    select pl_inner.id
    from t2 as pl_inner
    where  pl_inner.article_id in (
      select t4.article_id from t4
      where t4.user_id = \'nicke\'
    )
  )';
execute stmt;
partner_id
partner2
execute stmt;
partner_id
partner2
drop table t1,t2,t3,t4;
# 
# Bug#48623 Multiple subqueries are optimized incorrectly
# 
CREATE TABLE t1(val VARCHAR(10));
CREATE TABLE t2(val VARCHAR(10));
CREATE TABLE t3(val VARCHAR(10));
INSERT INTO t1  VALUES('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp');
INSERT INTO t2 VALUES('aaa'), ('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp');
INSERT INTO t3 VALUES('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp');
EXPLAIN
SELECT *
FROM t1
WHERE t1.val IN (SELECT t2.val FROM t2
WHERE  t2.val LIKE 'a%' OR t2.val LIKE 'e%')
AND t1.val IN (SELECT t3.val FROM t3
WHERE  t3.val LIKE 'a%' OR t3.val LIKE 'e%');
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	
1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	5	Using where; FirstMatch(t1); Using join buffer
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	6	Using where; FirstMatch(t3); Using join buffer
SELECT *
FROM t1
WHERE t1.val IN (SELECT t2.val FROM t2
WHERE  t2.val LIKE 'a%' OR t2.val LIKE 'e%')
AND t1.val IN (SELECT t3.val FROM t3
WHERE  t3.val LIKE 'a%' OR t3.val LIKE 'e%');
val
aaa
eee
DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;
# End of Bug#48623
set @@optimizer_switch=@save_optimizer_switch;
#
# BUG#49129: Wrong result with IN-subquery with join_cache_level=6 and firstmatch=off
#
CREATE TABLE t0 (a INT);
INSERT INTO t0 VALUES (0),(1),(2),(3),(4);
CREATE TABLE t1 (a INT, b INT, KEY(a));
INSERT INTO t1 SELECT a, a from t0;
CREATE TABLE t2 (a INT, b INT, PRIMARY KEY(a));
INSERT INTO t2 SELECT * FROM t1;
UPDATE t1 SET a=3, b=11 WHERE a=4;
UPDATE t2 SET b=11 WHERE a=3;
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='firstmatch=off';
The following should use a join order of t0,t1,t2, with DuplicateElimination:
explain
SELECT * FROM t0 WHERE t0.a IN 
(SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t0	ALL	NULL	NULL	NULL	NULL	5	Using where; Start temporary
1	PRIMARY	t1	ref	a	a	5	test.t0.a	1	Using join buffer
1	PRIMARY	t2	eq_ref	PRIMARY	PRIMARY	4	test.t0.a	1	Using where; End temporary; Using join buffer
SELECT * FROM t0 WHERE t0.a IN 
(SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);
a
0
1
2
3
set optimizer_switch=@save_optimizer_switch;
drop table t0, t1, t2;
# End
set join_cache_level=default;
show variables like 'join_cache_level';
Variable_name	Value
join_cache_level	1
set @@optimizer_switch=@save_optimizer_switch_jcl6;