Adding upstream version 1:10.11.6.upstream/1%10.11.6

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 522 insertions, 0 deletions

diff --git a/mysql-test/main/subselect_mat_cost_bugs.result b/mysql-test/main/subselect_mat_cost_bugs.result
new file mode 100644
index 00000000..d8ee3f9e
--- /dev/null
+++ b/mysql-test/main/subselect_mat_cost_bugs.result
@@ -0,0 +1,522 @@
+#
+# LP BUG#643424 valgrind warning in choose_subquery_plan()
+#
+CREATE TABLE t1 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+c1 int(11) DEFAULT NULL,
+c2 int(11) DEFAULT NULL,
+PRIMARY KEY (pk),
+KEY c2 (c2));
+INSERT INTO t1 VALUES (1,NULL,2);
+INSERT INTO t1 VALUES (2,7,9);
+INSERT INTO t1 VALUES (9,NULL,8);
+CREATE TABLE t2 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+c1 int(11) DEFAULT NULL,
+c2 int(11) DEFAULT NULL,
+PRIMARY KEY (pk),
+KEY c2 (c2));
+INSERT INTO t2 VALUES (1,1,7);
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='materialization=on,in_to_exists=on,semijoin=off';
+SELECT pk FROM t1 WHERE (c2, c1) IN (SELECT c2, c2 FROM t2);
+pk
+set session optimizer_switch=@save_optimizer_switch;
+drop table t1, t2;
+#
+# LP BUG#652727 Crash in create_ref_for_key()
+#
+CREATE TABLE t2 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+c1 int(11) DEFAULT NULL,
+PRIMARY KEY (pk));
+INSERT INTO t2 VALUES (10,7);
+INSERT INTO t2 VALUES (11,1);
+INSERT INTO t2 VALUES (17,NULL);
+CREATE TABLE t1 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+c1 int(11) DEFAULT NULL,
+PRIMARY KEY (pk));
+INSERT INTO t1 VALUES (15,1);
+INSERT INTO t1 VALUES (19,NULL);
+CREATE TABLE t3 (c2 int(11) DEFAULT NULL, KEY c2 (c2));
+INSERT INTO t3 VALUES (1);
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='materialization=on,in_to_exists=on,semijoin=off';
+SELECT c2
+FROM t3
+WHERE (2, 6) IN (SELECT t1.c1, t1.c1 FROM t1 STRAIGHT_JOIN t2 ON t2.pk = t1.pk);
+c2
+set session optimizer_switch=@save_optimizer_switch;
+drop table t1, t2, t3;
+#
+# LP BUG#641245 Crash in Item_equal::contains
+#
+CREATE TABLE t1 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+c1 int(11) DEFAULT NULL,
+c2 int(11) DEFAULT NULL,
+c3 varchar(1) DEFAULT NULL,
+c4 varchar(1) DEFAULT NULL,
+PRIMARY KEY (pk),
+KEY c2 (c2),
+KEY c3 (c3,c2));
+INSERT INTO t1 VALUES (10,7,8,'v','v');
+INSERT INTO t1 VALUES (11,1,9,'r','r');
+INSERT INTO t1 VALUES (12,5,9,'a','a');
+INSERT INTO t1 VALUES (13,7,18,'v','v');
+INSERT INTO t1 VALUES (14,1,19,'r','r');
+INSERT INTO t1 VALUES (15,5,29,'a','a');
+INSERT INTO t1 VALUES (17,7,38,'v','v');
+INSERT INTO t1 VALUES (18,1,39,'r','r');
+INSERT INTO t1 VALUES (19,5,49,'a','a');
+create table t1a like t1;
+insert into t1a select * from t1;
+create table t1b like t1;
+insert into t1b select * from t1;
+CREATE TABLE t2 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+c1 int(11) DEFAULT NULL,
+c2 int(11) DEFAULT NULL,
+c3 varchar(1) DEFAULT NULL,
+c4 varchar(1) DEFAULT NULL,
+PRIMARY KEY (pk),
+KEY c2 (c2),
+KEY c3 (c3,c2));
+INSERT INTO t2 VALUES (1,NULL,2,'w','w');
+INSERT INTO t2 VALUES (2,7,9,'m','m');
+set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
+EXPLAIN EXTENDED SELECT pk
+FROM t1
+WHERE c1 IN
+(SELECT t1a.c1
+FROM (t1b JOIN t2 ON t2.c3 = t1b.c4) LEFT JOIN
+t1a ON (t1a.c2 = t1b.pk AND 2)
+WHERE t1.pk) ;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	9	100.00	Using where
+2	DEPENDENT SUBQUERY	t1b	ALL	NULL	NULL	NULL	NULL	9	100.00	
+2	DEPENDENT SUBQUERY	t1a	ref	c2	c2	5	test.t1b.pk	1	100.00	Using where
+2	DEPENDENT SUBQUERY	t2	index	c3	c3	9	NULL	2	100.00	Using where; Using index; Using join buffer (flat, BNL join)
+Warnings:
+Note	1276	Field or reference 'test.t1.pk' of SELECT #2 was resolved in SELECT #1
+Note	1003	/* select#1 */ select `test`.`t1`.`pk` AS `pk` from `test`.`t1` where <expr_cache><`test`.`t1`.`c1`,`test`.`t1`.`pk`>(<in_optimizer>(`test`.`t1`.`c1`,<exists>(/* select#2 */ select `test`.`t1a`.`c1` from `test`.`t1b` join `test`.`t2` left join `test`.`t1a` on(`test`.`t1a`.`c2` = `test`.`t1b`.`pk` and 2) where `test`.`t2`.`c3` = `test`.`t1b`.`c4` and `test`.`t1`.`pk` <> 0 and <cache>(`test`.`t1`.`c1`) = `test`.`t1a`.`c1`)))
+SELECT pk
+FROM t1
+WHERE c1 IN
+(SELECT t1a.c1
+FROM (t1b JOIN t2 ON t2.c3 = t1b.c4) LEFT JOIN
+t1a ON (t1a.c2 = t1b.pk AND 2)
+WHERE t1.pk) ;
+pk
+DROP TABLE t1, t1a, t1b, t2;
+#
+# LP BUG#714808 Assertion `outer_lookup_keys <= outer_record_count'
+# failed with materialization
+CREATE TABLE t1 ( pk int(11), PRIMARY KEY (pk)) ;
+CREATE TABLE t2 ( f2 int(11)) ;
+CREATE TABLE t3 ( f1 int(11), f3 varchar(1), KEY (f1)) ;
+INSERT INTO t3 VALUES (7,'f');
+set @@optimizer_switch='materialization=on,in_to_exists=on,semijoin=off';
+EXPLAIN
+SELECT t1.*
+FROM t3 RIGHT JOIN t1 ON t1.pk = t3.f1
+WHERE t3.f3 OR ( 3 ) IN ( SELECT f2 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	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
+SELECT t1.*
+FROM t3 RIGHT JOIN t1 ON t1.pk = t3.f1
+WHERE t3.f3 OR ( 3 ) IN ( SELECT f2 FROM t2 );
+pk
+drop table t1,t2,t3;
+#
+# LP BUG#714999 Second crash in select_describe() with nested subqueries
+#
+CREATE TABLE t1 ( pk int(11)) ;
+INSERT INTO t1 VALUES (29);
+CREATE TABLE t2 ( f1 varchar(1)) ;
+INSERT INTO t2 VALUES ('f'),('d');
+CREATE TABLE t3 ( f2 varchar(1)) ;
+EXPLAIN SELECT f2 FROM t3 WHERE (
+SELECT MAX( pk ) FROM t1
+WHERE EXISTS (
+SELECT max(f1)
+FROM t2 GROUP BY f1
+)
+) IS NULL ;
+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	t1	system	NULL	NULL	NULL	NULL	1	
+3	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using temporary
+drop table t1, t2, t3;
+#
+# LP BUG#715034 Item_sum_distinct::clear(): Assertion `tree != 0' failed
+#
+CREATE TABLE t2 ( f2 int(11)) ;
+CREATE TABLE t1 ( f3 int(11), KEY (f3)) ;
+INSERT INTO t1 VALUES (6),(4);
+set @tmp_optimizer_switch=@@optimizer_switch;
+set optimizer_switch='derived_merge=off,derived_with_keys=off';
+EXPLAIN
+SELECT * FROM (SELECT * FROM t2) AS a2
+WHERE (SELECT distinct SUM(distinct f3 ) FROM t1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	0	Const row not found
+3	SUBQUERY	t1	index	NULL	f3	5	NULL	2	Using index
+2	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
+insert into t2 values (1),(2);
+EXPLAIN
+SELECT * FROM (SELECT * FROM t2) AS a2
+WHERE (SELECT distinct SUM(distinct f3 ) FROM t1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	
+3	SUBQUERY	t1	index	NULL	f3	5	NULL	2	Using index
+2	DERIVED	t2	ALL	NULL	NULL	NULL	NULL	2	
+set optimizer_switch=@tmp_optimizer_switch;
+drop table t1,t2;
+#
+# LP BUG#715027 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed
+#
+CREATE TABLE t1 ( f1 int(11), PRIMARY KEY (f1)) ;
+INSERT INTO t1 VALUES (28),(29);
+CREATE TABLE t2 ( f2 int(11), f3 int(11), f10 varchar(1)) ;
+INSERT INTO t2 VALUES (NULL,6,'f'),(4,2,'d');
+set @tmp_optimizer_switch=@@optimizer_switch;
+set optimizer_switch='derived_merge=off,derived_with_keys=off';
+EXPLAIN
+SELECT alias2.f2 AS field1
+FROM t1 AS alias1 JOIN ( SELECT * FROM t2 ) AS alias2 ON alias2.f3 = alias1.f1
+WHERE (
+SELECT t2.f2
+FROM t2 JOIN t1 ON (t1.f1>0 or t1.f1<0)
+WHERE (t1.f1>0 or t1.f1<0) AND alias2.f10
+)
+ORDER BY field1 ;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	Using where; Using filesort
+1	PRIMARY	alias1	eq_ref	PRIMARY	PRIMARY	4	alias2.f3	1	Using index
+3	DEPENDENT SUBQUERY	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using where; Using index
+3	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using join buffer (flat, BNL join)
+2	DERIVED	t2	ALL	NULL	NULL	NULL	NULL	2	
+SELECT alias2.f2 AS field1
+FROM t1 AS alias1 JOIN ( SELECT * FROM t2 ) AS alias2 ON alias2.f3 = alias1.f1
+WHERE (
+SELECT t2.f2
+FROM t2 JOIN t1 ON (t1.f1>0 or t1.f1<0)
+WHERE (t1.f1>0 or t1.f1<0) AND alias2.f10
+)
+ORDER BY field1 ;
+field1
+Warnings:
+Warning	1292	Truncated incorrect DECIMAL value: 'f'
+Warning	1292	Truncated incorrect DECIMAL value: 'd'
+set optimizer_switch=@tmp_optimizer_switch;
+drop table t1,t2;
+#
+# LP BUG#718578 Yet another Assertion `!table ||
+# (!table->read_set || bitmap_is_set(table->read_set, field_index))'
+CREATE TABLE t1 ( f1 int(11), f2 int(11), f3 int(11)) ;
+INSERT IGNORE INTO t1 VALUES (28,5,6),(29,NULL,4);
+CREATE TABLE t2 ( f10 varchar(1) );
+INSERT IGNORE INTO t2 VALUES (NULL);
+SELECT f1 AS field1
+FROM ( SELECT * FROM t1 ) AS alias1
+WHERE (SELECT t1.f1
+FROM t2 JOIN t1 ON t1.f2
+WHERE alias1.f3 AND t1.f3) AND f2
+ORDER BY field1;
+field1
+28
+drop table t1,t2;
+#
+# LP BUG#601124 Bug in eliminate_item_equal
+# leads to crash in Item_func::Item_func
+CREATE TABLE t1 ( f1 int(11), f3 varchar(1)) ;
+INSERT INTO t1 VALUES (5,'m'),(NULL,'c');
+CREATE TABLE t2 ( f2 int(11), f3 varchar(1)) ;
+INSERT INTO t2 VALUES (6,'f'),(2,'d');
+CREATE TABLE t3 ( f2 int(11), f3 varchar(1)) ;
+INSERT INTO t3 VALUES (6,'f'),(2,'d');
+SELECT * FROM t3
+WHERE ( f2 ) IN (SELECT t1.f1
+FROM t1 STRAIGHT_JOIN t2 ON t2.f3 = t1.f3
+WHERE t2.f3 = 'c');
+f2	f3
+drop table t1,t2,t3;
+#                                                                                                                                                     
+# LP BUG#718593 Crash in substitute_for_best_equal_field -> eliminate_item_equal -> 
+# Item_field::find_item_equal -> Item_equal::contains
+#
+set @save_optimizer_switch=@@optimizer_switch;
+SET @@optimizer_switch = 'semijoin=off';
+CREATE TABLE t1 ( f3 int(11), f10 varchar(1), f11 varchar(1)) ;
+INSERT IGNORE INTO t1 VALUES (6,'f','f'),(2,'d','d');
+CREATE TABLE t2 ( f12 int(11), f13 int(11)) ;
+insert into t2 values (1,2), (3,4);
+EXPLAIN
+SELECT * FROM t2
+WHERE ( f12 ) IN (
+SELECT alias2.f3
+FROM t1 AS alias1 JOIN t1 AS alias2 ON alias2.f10 = alias1.f11
+WHERE alias1.f11 OR alias1.f3 = 50 AND alias1.f10
+);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
+2	MATERIALIZED	alias1	ALL	NULL	NULL	NULL	NULL	2	Using where
+2	MATERIALIZED	alias2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
+SELECT * FROM t2
+WHERE ( f12 ) IN (
+SELECT alias2.f3
+FROM t1 AS alias1 JOIN t1 AS alias2 ON alias2.f10 = alias1.f11
+WHERE alias1.f11 OR alias1.f3 = 50 AND alias1.f10
+);
+f12	f13
+Warnings:
+Warning	1292	Truncated incorrect DECIMAL value: 'f'
+Warning	1292	Truncated incorrect DECIMAL value: 'd'
+EXPLAIN
+SELECT * FROM t2
+WHERE ( f12 ) IN (
+SELECT alias2.f3
+FROM t1 AS alias1, t1 AS alias2
+WHERE (alias2.f10 = alias1.f11) AND (alias1.f11 OR alias1.f3 = 50 AND alias1.f10));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
+2	MATERIALIZED	alias1	ALL	NULL	NULL	NULL	NULL	2	Using where
+2	MATERIALIZED	alias2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
+SELECT * FROM t2
+WHERE ( f12 ) IN (
+SELECT alias2.f3
+FROM t1 AS alias1, t1 AS alias2
+WHERE (alias2.f10 = alias1.f11) AND (alias1.f11 OR alias1.f3 = 50 AND alias1.f10));
+f12	f13
+Warnings:
+Warning	1292	Truncated incorrect DECIMAL value: 'f'
+Warning	1292	Truncated incorrect DECIMAL value: 'd'
+set @@optimizer_switch=@save_optimizer_switch;
+drop table t1, t2;
+#
+# MWL#89: test introduced after Sergey Petrunia's review - test that
+# keyparts wihtout index prefix are used with the IN-EXISTS strategy.
+# 
+create table t1 (c1 int);
+insert into t1 values (1), (2), (3);
+create table t2 (kp1 int, kp2 int, c2 int, filler char(100));
+insert into t2 values (0,0,0,'filler'),(0,1,1,'filler'),(0,2,2,'filler'),(0,3,3,'filler');
+create index key1 on t2 (kp1, kp2);
+create index key2 on t2 (kp1);
+create index key3 on t2 (kp2);
+SET @@optimizer_switch='materialization=off,semijoin=off,in_to_exists=on';
+analyze table t2;
+Table	Op	Msg_type	Msg_text
+test.t2	analyze	status	Engine-independent statistics collected
+test.t2	analyze	status	OK
+explain
+select c1 from t1 where c1 in (select kp1 from t2 where kp2 = 10 and c2 = 4) or c1 > 7;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	Using where
+2	DEPENDENT SUBQUERY	t2	ref	key1,key2,key3	key3	5	const	1	Using where
+select c1 from t1 where c1 in (select kp1 from t2 where kp2 = 10 and c2 = 4) or c1 > 7;
+c1
+set @@optimizer_switch='default';
+drop table t1, t2;
+#
+# LP BUG#800679: Assertion `outer_join->table_count > 0' failed in
+# JOIN::choose_subquery_plan() with materialization=on,semijoin=off
+#
+CREATE TABLE t1 ( f1 int);
+insert into t1 values (1),(2);
+CREATE TABLE t2 ( f1 int);
+insert into t2 values (1),(2);
+SET @@optimizer_switch='materialization=on,semijoin=off';
+EXPLAIN
+SELECT * FROM t1
+WHERE (f1) IN (SELECT f1 FROM t2)
+LIMIT 0;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Zero limit
+2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT * FROM t1
+WHERE (f1) IN (SELECT f1 FROM t2)
+LIMIT 0;
+f1
+set @@optimizer_switch='default';
+drop table t1, t2;
+#
+# LP BUG#834492: Crash in fix_semijoin_strategies_for_picked_join_order
+# with nested subqueries and LooseScan=ON
+#
+CREATE TABLE t3 (b int) ;
+INSERT INTO t3 VALUES (0),(0);
+CREATE TABLE t4 (a int, b int, c int, d int, PRIMARY KEY (a)) ;
+INSERT INTO t4 VALUES (28,0,0,0),(29,3,0,0);
+CREATE TABLE t5 (a int, b int, c int, d int, KEY (c,b)) ;
+INSERT INTO t5 VALUES (28,0,0,0),(29,3,0,0);
+SET @@optimizer_switch='semijoin=ON,loosescan=ON,firstmatch=OFF,materialization=OFF';
+EXPLAIN SELECT *
+FROM t3
+WHERE t3.b > ALL (
+SELECT c
+FROM t4
+WHERE t4.a >= t3.b
+AND a = SOME (SELECT b FROM t5));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	2	Using where
+2	DEPENDENT SUBQUERY	t5	index	c	c	10	NULL	2	Using where; Using index; Start temporary
+2	DEPENDENT SUBQUERY	t4	eq_ref	PRIMARY	PRIMARY	4	test.t5.b	1	Using where; End temporary
+SELECT *
+FROM t3
+WHERE t3.b > ALL (
+SELECT c
+FROM t4
+WHERE t4.a >= t3.b
+AND a = SOME (SELECT b FROM t5));
+b
+0
+0
+set @@optimizer_switch='default';
+drop table t3, t4, t5;
+#
+# LP BUG#858038 The result of a query with NOT IN subquery depends on the state of the optimizer switch
+#
+set @optimizer_switch_save= @@optimizer_switch;
+create table t1 (c1 char(2) not null, c2 char(2));
+create table t2 (c3 char(2),          c4 char(2));
+insert into t1 values ('a1', 'b1');
+insert into t1 values ('a2', 'b2');
+insert into t2 values ('x1', 'y1');
+insert into t2 values ('a2', null);
+set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=off,partial_match_table_scan=on';
+explain select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
+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	MATERIALIZED	t2	ALL	NULL	NULL	NULL	NULL	2	
+select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
+c1	c2
+set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off';
+explain select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
+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	MATERIALIZED	t2	ALL	NULL	NULL	NULL	NULL	2	
+select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
+c1	c2
+drop table t1, t2;
+set optimizer_switch= @optimizer_switch_save;
+#
+# MDEV-12673: cost-based choice between materialization and in-to-exists
+#
+CREATE TABLE t1 (
+pk1 int, a1 varchar(3), b1 varchar(3), PRIMARY KEY (pk1), KEY(a1), KEY(b1)
+) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1,'foo','bar'),(2,'bar','foo');
+CREATE TABLE t2 (pk2 INT PRIMARY KEY, a2 VARCHAR(3), KEY(a2)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (1,'abc'),(2,'xyz'),(3,'foo');
+SELECT 'qux' IN ( SELECT a1 FROM t1 INNER JOIN t2 WHERE a2 = b1 AND pk2 = 3 ) as exp;
+exp
+0
+SELECT 'bar' IN ( SELECT a1 FROM t1 INNER JOIN t2 WHERE a2 = b1 AND pk2 = 3 ) as exp;
+exp
+1
+EXPLAIN 
+SELECT 'bar' IN ( SELECT a1 FROM t1 INNER JOIN t2 WHERE a2 = b1 AND pk2 = 3 ) as exp;
+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	t2	const	PRIMARY,a2	PRIMARY	4	const	1	
+2	SUBQUERY	t1	ref	a1,b1	b1	6	const	1	Using where
+DROP TABLE t1,t2;
+CREATE TABLE t1 (i1 INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1);
+CREATE TABLE t2 (i2 int, c2 varchar(3), KEY(i2,c2)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (1,'abc'),(2,'foo');
+CREATE TABLE t3 (pk3 int PRIMARY KEY, c3 varchar(3)) ENGINE=MyISAM;
+INSERT INTO t3 VALUES (1,'foo'),(2,'bar');
+SELECT * FROM t1 WHERE i1 NOT IN ( 
+SELECT i2 FROM t2 RIGHT JOIN t3 ON (c3 = c2) WHERE pk3 = i1 
+);
+i1
+1
+EXPLAIN
+SELECT * FROM t1 WHERE i1 NOT IN ( 
+SELECT i2 FROM t2 RIGHT JOIN t3 ON (c3 = c2) WHERE pk3 = i1 
+);
+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	t3	const	PRIMARY	PRIMARY	4	const	1	
+2	DEPENDENT SUBQUERY	t2	index	i2	i2	11	NULL	2	Using where; Using index
+DROP TABLE t1,t2,t3;
+#
+# MDEV-7599: in-to-exists chosen after min/max optimization
+#
+set @optimizer_switch_save= @@optimizer_switch;
+CREATE TABLE t1 (a INT, KEY(a)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+CREATE TABLE t2 (b INT, c INT) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (1,6),(2,4), (8,9);
+SELECT * FROM t2 WHERE b != ALL (SELECT MIN(a) FROM t1, t2 WHERE t2.c = t2.b);
+b	c
+EXPLAIN EXTENDED SELECT * FROM t2 WHERE b != ALL (SELECT MIN(a) FROM t1, t2 WHERE t2.c = t2.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+2	MATERIALIZED	t1	index	NULL	a	5	NULL	2	100.00	Using index
+2	MATERIALIZED	t2	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t2` where !<expr_cache><`test`.`t2`.`b`>(<in_optimizer>(`test`.`t2`.`b`,`test`.`t2`.`b` in ( <materialize> (/* select#2 */ select min(`test`.`t1`.`a`) from `test`.`t1` join `test`.`t2` where `test`.`t2`.`c` = `test`.`t2`.`b` ), <primary_index_lookup>(`test`.`t2`.`b` in <temporary table> on distinct_key where `test`.`t2`.`b` = `<subquery2>`.`MIN(a)`))))
+set optimizer_switch= 'materialization=off';
+SELECT * FROM t2 WHERE b != ALL (SELECT MIN(a) FROM t1, t2 WHERE t2.c = t2.b);
+b	c
+EXPLAIN EXTENDED SELECT * FROM t2 WHERE b != ALL (SELECT MIN(a) FROM t1, t2 WHERE t2.c = t2.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+2	DEPENDENT SUBQUERY	t1	index	NULL	a	5	NULL	2	100.00	Using index
+2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t2` where !<expr_cache><`test`.`t2`.`b`>(<in_optimizer>(`test`.`t2`.`b`,<exists>(/* select#2 */ select min(`test`.`t1`.`a`) from `test`.`t1` join `test`.`t2` where `test`.`t2`.`c` = `test`.`t2`.`b` having trigcond(<cache>(`test`.`t2`.`b`) = <ref_null_helper>(min(`test`.`t1`.`a`))))))
+set optimizer_switch= @optimizer_switch_save;
+DROP TABLE t1,t2;
+CREATE TABLE t1 (f1 varchar(10)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES ('foo'),('bar');
+CREATE TABLE t2 (f2 varchar(10), key(f2)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES ('baz'),('qux');
+CREATE TABLE t3 (f3 varchar(10)) ENGINE=MyISAM;
+INSERT INTO t3 VALUES ('abc'),('def');
+SELECT * FROM t1
+WHERE f1 = ALL( SELECT MAX(t2a.f2)
+FROM t2 AS t2a INNER JOIN t2 t2b INNER JOIN t3
+ON (f3 = t2b.f2) );
+f1
+DROP TABLE t1,t2,t3;
+#
+# MDEV-12963: min/max optimization optimizing away all tables employed
+#             for uncorrelated IN subquery used in a disjunct of WHERE
+#
+create table t1 (a int, index idx(a)) engine=myisam;
+insert into t1 values (4),(7),(1),(3),(9);
+select * from t1 where a in (select max(a) from t1 where a < 4) or a > 5;
+a
+3
+7
+9
+explain
+select * from t1 where a in (select max(a) from t1 where a < 4) or a > 5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	index	idx	idx	5	NULL	5	Using where; Using index
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+drop table t1;
+#
+# MDEV-13135: subquery with ON expression subject to
+#             semi-join optimizations
+#
+CREATE TABLE t1 (a INT);
+CREATE ALGORITHM=MERGE VIEW v1 AS SELECT a AS v_a FROM t1;
+INSERT INTO t1 VALUES (1),(3);
+CREATE TABLE t2 (b INT, KEY(b));
+INSERT INTO t2 VALUES (3),(4);
+SELECT * FROM t1 WHERE a NOT IN (
+SELECT b FROM t2 INNER JOIN v1 ON (b IN ( SELECT a FROM t1 )) 
+WHERE v_a = b
+);
+a
+1
+DROP VIEW v1;
+DROP TABLE t1,t2;