5.3 merge

1 files changed, 275 insertions, 21 deletions

diff --git a/mysql-test/r/subselect_no_opts.result b/mysql-test/r/subselect_no_opts.result
index 91878c5dec5..518f9366b80 100644
--- a/mysql-test/r/subselect_no_opts.result
+++ b/mysql-test/r/subselect_no_opts.result
@@ -1,9 +1,12 @@
 set @optimizer_switch_for_subselect_test='materialization=off,semijoin=off,subquery_cache=off,mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
+set join_cache_level=1;
+set @join_cache_level_for_subselect_test=@@join_cache_level;
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t11,t12;
 drop view if exists v2;
 set @subselect_tmp=@@optimizer_switch;
 set @@optimizer_switch=ifnull(@optimizer_switch_for_subselect_test,
 "semijoin=on,firstmatch=on,loosescan=on,semijoin_with_cache=on,partial_match_rowid_merge=off,partial_match_table_scan=off");
+set join_cache_level=@join_cache_level_for_subselect_test;
 set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
 select (select 2);
 (select 2)
@@ -202,6 +205,8 @@ select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
 (select * from t2 where a>1) as tt;
 (select t3.a from t3 where a<8 order by 1 desc limit 1)	a
 7	2
+set @tmp_optimizer_switch=@@optimizer_switch;
+set optimizer_switch='derived_merge=off,derived_with_keys=off';
 explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
 (select * from t2 where a>1) as tt;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
@@ -210,6 +215,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 2	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using filesort
 Warnings:
 Note	1003	select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
+set optimizer_switch=@tmp_optimizer_switch;
 select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
 a
 2
@@ -1371,7 +1377,7 @@ create table t1 (id int not null auto_increment primary key, salary int, key(sal
 insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000);
 explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	PRIMARY	t1	ref	salary	salary	5	const	0	0.00	Using index condition
+1	PRIMARY	t1	ref	salary	salary	5	const	0	0.00	Using where
 2	SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
 Warnings:
 Note	1003	select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`))
@@ -1396,7 +1402,7 @@ insert into t1 values (1,0), (2,0), (3,0);
 insert into t2 values (1,1), (2,1), (3,1), (2,2);
 update ignore t1 set b=(select b from t2 where t1.a=t2.a);
 Warnings:
-Error	1242	Subquery returns more than 1 row
+Warning	1242	Subquery returns more than 1 row
 select * from t1;
 a	b
 1	1
@@ -1497,10 +1503,10 @@ a
 explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t2	index	NULL	a	5	NULL	4	100.00	Using where; Using index
-2	DEPENDENT SUBQUERY	t1	ref	a	a	5	func	1001	100.00	Using index
-2	DEPENDENT SUBQUERY	t3	index	a	a	5	NULL	3	100.00	Using where; Using index; Using join buffer (flat, BNL join)
+2	DEPENDENT SUBQUERY	t3	index	a	a	5	NULL	3	100.00	Using where; Using index
+2	DEPENDENT SUBQUERY	t1	ref	a	a	10	func,test.t3.a	1167	100.00	Using index
 Warnings:
-Note	1003	select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t1`.`b`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))
+Note	1003	select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`a`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))
 insert into t1 values (3,31);
 select * from t2 where t2.a in (select a from t1 where t1.b <> 30);
 a
@@ -1659,7 +1665,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	0.00	const row not found
 Warnings:
-Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,(<max>(select NULL from `test`.`t2` group by 1) > <cache>(`test`.`t3`.`a`))))
+Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>(<in_optimizer>(`test`.`t3`.`a`,((select max(NULL) from `test`.`t2`) > <cache>(`test`.`t3`.`a`))))
 select * from t3 where a >= some (select b from t2 group by 1);
 a
 explain extended select * from t3 where a >= some (select b from t2 group by 1);
@@ -1667,7 +1673,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	0.00	const row not found
 Warnings:
-Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,(<min>(select NULL from `test`.`t2` group by 1) <= <cache>(`test`.`t3`.`a`))))
+Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(`test`.`t3`.`a`,((select min(NULL) from `test`.`t2`) <= <cache>(`test`.`t3`.`a`))))
 select * from t3 where NULL >= any (select b from t2);
 a
 explain extended select * from t3 where NULL >= any (select b from t2);
@@ -1683,7 +1689,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	100.00	
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	0.00	const row not found
 Warnings:
-Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(<min>(select NULL from `test`.`t2` group by 1) <= NULL)))
+Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,((select min(NULL) from `test`.`t2`) <= NULL)))
 select * from t3 where NULL >= some (select b from t2);
 a
 explain extended select * from t3 where NULL >= some (select b from t2);
@@ -1699,7 +1705,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	100.00	
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	0.00	const row not found
 Warnings:
-Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,(<min>(select NULL from `test`.`t2` group by 1) <= NULL)))
+Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>(<in_optimizer>(NULL,((select min(NULL) from `test`.`t2`) <= NULL)))
 insert into t2 values (2,2), (2,1), (3,3), (3,1);
 select * from t3 where a > all (select max(b) from t2 group by a);
 a
@@ -2976,9 +2982,9 @@ Note	1003	select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `tes
 explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	8	100.00	
-2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	9	100.00	Using where; Using temporary
+2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	9	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = '0') group by `test`.`t2`.`one`,`test`.`t2`.`two` having (trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`))) and trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`))))) AS `test` from `test`.`t1`
+Note	1003	select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = '0') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)))) having (trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`))))) AS `test` from `test`.`t1`
 DROP TABLE t1,t2;
 set optimizer_switch=@tmp11867_optimizer_switch;
 CREATE TABLE t1 (a char(5), b char(5));
@@ -4354,6 +4360,9 @@ LEFT(t1.a1,1)
 SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3);
 a2
 DROP TABLE t1, t2, t3;
+SET @save_optimizer_switch=@@optimizer_switch;
+SET optimizer_switch='semijoin_with_cache=off';
+SET optimizer_switch='materialization=off';
 CREATE TABLE t1 (a CHAR(1), b VARCHAR(10));
 INSERT INTO t1 VALUES ('a', 'aa');
 INSERT INTO t1 VALUES ('a', 'aaa');
@@ -4385,6 +4394,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500);
 a	b
 DROP TABLE t1,t2;
+SET optimizer_switch= @save_optimizer_switch;
 CREATE TABLE t1(a INT, b INT);
 INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4);
 EXPLAIN
@@ -4510,18 +4520,21 @@ a
 drop table t1, t2;
 CREATE TABLE t1 (a INT);
 INSERT INTO t1 VALUES (1),(2);
-EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a);
+SET @save_join_cache_level=@@join_cache_level;
+SET join_cache_level=0;
+EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 GROUP BY a);
 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	
 2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	Using temporary
 Warnings:
-Note	1003	select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 from `test`.`t1` group by `test`.`t1`.`a` having (1 = <ref_null_helper>(1))))
-EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a);
+Note	1003	select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select min(`test`.`t1`.`a`) from `test`.`t1` group by `test`.`t1`.`a` having (1 = <ref_null_helper>(min(`test`.`t1`.`a`)))))
+EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 WHERE a > 3 GROUP BY a);
 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	
 2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	Using where; Using temporary
 Warnings:
-Note	1003	select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having (1 = <ref_null_helper>(1))))
+Note	1003	select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select min(`test`.`t1`.`a`) from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having (1 = <ref_null_helper>(min(`test`.`t1`.`a`)))))
+SET join_cache_level=@save_join_cache_level;
 DROP TABLE t1;
 #
 # Bug#45061: Incorrectly market field caused wrong result.
@@ -4597,6 +4610,32 @@ pk	int_key
 3	3
 7	3
 DROP TABLE t1,t2;
+#
+# Bug#12329653 
+# EXPLAIN, UNION, PREPARED STATEMENT, CRASH, SQL_FULL_GROUP_BY
+#
+CREATE TABLE t1(a1 int);
+INSERT INTO t1 VALUES (1),(2);
+SELECT @@session.sql_mode INTO @old_sql_mode;
+SET SESSION sql_mode='ONLY_FULL_GROUP_BY';
+SELECT 1 FROM t1 WHERE 1 < SOME (SELECT a1 FROM t1);
+1
+1
+1
+PREPARE stmt FROM 
+'SELECT 1 UNION ALL 
+SELECT 1 FROM t1
+ORDER BY
+(SELECT 1 FROM t1 AS t1_0  
+  WHERE 1 < SOME (SELECT a1 FROM t1)
+)' ;
+EXECUTE stmt ;
+ERROR 21000: Subquery returns more than 1 row
+EXECUTE stmt ;
+ERROR 21000: Subquery returns more than 1 row
+SET SESSION sql_mode=@old_sql_mode;
+DEALLOCATE PREPARE stmt;
+DROP TABLE t1;
 End of 5.0 tests.
 create table t_out (subcase char(3),
 a1 char(2), b1 char(2), c1 char(2));
@@ -4839,8 +4878,6 @@ SELECT * FROM t1
 WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b);
 pk	a
 1	10
-3	30
-2	20
 DROP TABLE t1,t2;
 CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a), KEY b (b));
 INSERT INTO t1 VALUES (1,NULL), (9,NULL);
@@ -5593,16 +5630,19 @@ CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL);
 INSERT INTO t2 VALUES (11,1);
 INSERT INTO t2 VALUES (12,2);
 INSERT INTO t2 VALUES (15,4);
+SET @save_join_cache_level=@@join_cache_level;
+SET join_cache_level=0;
 EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1);
 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	index	NULL	PRIMARY	4	NULL	3	Using index
 2	DEPENDENT SUBQUERY	it	eq_ref	PRIMARY	PRIMARY	4	func	1	Using index
+2	DEPENDENT SUBQUERY	t2	index	NULL	PRIMARY	4	NULL	3	Using index
 SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1);
 pk	i
 11	0
 12	5
 15	0
+SET join_cache_level=@save_join_cache_level;
 DROP table t1,t2;
 #
 # Bug#751350: crash with pushed condition for outer references when
@@ -5610,18 +5650,21 @@ DROP table t1,t2;
 #
 CREATE TABLE t1 (a int, b int) ;
 INSERT INTO t1 VALUES (0,0),(0,0);
+set @optimizer_switch_save=@@optimizer_switch;
+set @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=on';
 EXPLAIN
 SELECT b FROM t1
 WHERE ('0') IN ( SELECT a  FROM t1 GROUP BY a )
 GROUP BY b;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using temporary; Using filesort
-2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using temporary
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
 SELECT b FROM t1
 WHERE ('0') IN ( SELECT a  FROM t1 GROUP BY a )
 GROUP BY b;
 b
 0
+set @@optimizer_switch=@optimizer_switch_save;
 DROP TABLE t1;
 #
 # Bug #11765713 58705:
@@ -5833,6 +5876,8 @@ CREATE TABLE t2 (a int, b int) ;
 INSERT INTO t2 VALUES (20,9),(20,9);
 create table t3 (d int, e int);
 insert into t3 values (2, 9), (3,10);
+SET @save_optimizer_switch=@@optimizer_switch;
+SET optimizer_switch='outer_join_with_cache=off';
 EXPLAIN
 SELECT t2.b , t1.c
 FROM t2 LEFT JOIN t1 ON t1.c < 3
@@ -5847,9 +5892,9 @@ WHERE (t2.b, t1.c) NOT IN (SELECT * from t3);
 b	c
 9	NULL
 9	NULL
+SET optimizer_switch=@save_optimizer_switch;
 drop table t1, t2, t3;
 End of 5.3 tests
-End of 5.5 tests.
 #
 # Bug#12763207 - ASSERT IN SUBSELECT::SINGLE_VALUE_TRANSFORMER
 #
@@ -5882,10 +5927,13 @@ DROP TABLE t1, t2;
 CREATE TABLE t1 (a INT, b INT, INDEX (a));
 INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);
 
+set @tmp_optimizer_switch=@@optimizer_switch;
+set optimizer_switch='derived_merge=off,derived_with_keys=off';
 EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	
 2	DERIVED	t1	ref	a	a	5	const	1	
+set optimizer_switch=@tmp_optimizer_switch;
 
 EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -5964,7 +6012,7 @@ WHERE f1_key != table2.f1_key AND f1_key >= table1.f1 );
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	table1	ALL	NULL	NULL	NULL	NULL	2	
 1	PRIMARY	table2	index	NULL	f1_key	4	NULL	10	Using where; Using index; Using join buffer (flat, BNL join)
-2	DEPENDENT SUBQUERY	t2	range	f1_key	f1_key	4	NULL	6	Range checked for each record (index map: 0x1); Using temporary
+2	DEPENDENT SUBQUERY	t2	index	f1_key	f1_key	4	NULL	10	Using where; Using index
 DROP TABLE t1,t2;
 #
 # lp:826279: assertion failure with GROUP BY a result of subquery
@@ -6026,6 +6074,212 @@ set @@optimizer_switch='in_to_exists=on,semijoin=off,materialization=off,subquer
 select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1 where a in (select a from t1)))))))))))))))))))))))))))));
 a
 1
+set @@optimizer_switch=@subselect_tmp;
+drop table t1;
+#
+# LP BUG#894397 Wrong result with in_to_exists, constant table , semijoin=OFF,materialization=OFF
+#
+CREATE TABLE t1 (a varchar(3));
+INSERT INTO t1 VALUES ('AAA'),('BBB');
+CREATE TABLE t2 (a varchar(3));
+INSERT INTO t2 VALUES ('CCC');
+set @@optimizer_switch='semijoin=off,materialization=off,in_to_exists=on,subquery_cache=off';
+SELECT * FROM t1 WHERE t1.a IN (SELECT t2.a FROM t2 WHERE t2.a < 'ZZZ');
+a
+set @@optimizer_switch=@subselect_tmp;
+drop table t1, t2;
+#
+# LP bug #859375: Assertion `0' failed in st_select_lex_unit::optimize
+# with view , UNION and prepared statement (rewriting fake_select
+# condition).
+#
+CREATE TABLE t1 ( f1 int NOT NULL, f4 varchar(1) NOT NULL) ;
+INSERT INTO t1 VALUES (6,'d'),(7,'y');
+CREATE TABLE t2 ( f1 int NOT NULL, f2 int NOT NULL) ;
+INSERT INTO t2 VALUES (10,7);
+CREATE VIEW v2 AS SELECT * FROM t2;
+PREPARE st1 FROM "
+        SELECT *
+        FROM t1
+        LEFT JOIN v2 ON ( v2.f2 = t1.f1 )
+        WHERE v2.f1 NOT IN (
+                SELECT 1 UNION
+                SELECT 247
+        )
+";
+EXECUTE st1;
+f1	f4	f1	f2
+7	y	10	7
+deallocate prepare st1;
+DROP VIEW v2;
+DROP TABLE t1,t2;
+#
+# LP bug #887458 Crash in subselect_union_engine::no_rows with
+# double UNION and join_cache_level=3,8
+# (IN/ALL/ANY optimizations should not be applied to fake_select)
+CREATE TABLE t2 ( a int, b varchar(1)) ;
+INSERT IGNORE INTO t2 VALUES (8,'y'),(8,'y');
+CREATE TABLE t1 ( b varchar(1)) ;
+INSERT IGNORE INTO t1 VALUES (NULL),(NULL);
+set @save_join_cache_level=@@join_cache_level;
+SET SESSION join_cache_level=3;
+SELECT *
+FROM t1, t2
+WHERE t2.b IN (
+SELECT 'm' UNION
+SELECT 'm'
+) OR t1.b <> SOME (
+SELECT 'v' UNION
+SELECT 't'
+);
+b	a	b
+set @@join_cache_level= @save_join_cache_level;
+drop table t1,t2;
+#
+# LP bug #885162 Got error 124 from storage engine with UNION inside
+# subquery and join_cache_level=3..8
+# (IN/ALL/ANY optimizations should not be applied to fake_select)
+#
+CREATE TABLE t1 (
+f1 varchar(1) DEFAULT NULL
+);
+INSERT INTO t1 VALUES ('c');
+set @save_join_cache_level=@@join_cache_level;
+SET SESSION join_cache_level=8;
+SELECT * FROM t1 WHERE t1.f1 IN ( SELECT 'k' UNION SELECT 'e' );
+f1
+set @@join_cache_level= @save_join_cache_level;
 drop table t1;
+#
+# LP BUG#747278 incorrect values of the NULL (no rows) single 
+# row subquery requested via element_index() interface
+#
+CREATE TABLE t1 (f1a int, f1b int) ;
+INSERT IGNORE INTO t1 VALUES (1,1),(2,2);
+CREATE TABLE t2 ( f2 int);
+INSERT IGNORE INTO t2 VALUES (3),(4);
+CREATE TABLE t3 (f3a int default 1, f3b int default 2);
+INSERT INTO t3 VALUES (1,1),(2,2);
+set @old_optimizer_switch = @@session.optimizer_switch;
+set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,subquery_cache=off,semijoin=off';
+SELECT (SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) FROM t2;
+(SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a,f3a  FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) FROM t2;
+(SELECT f3a,f3a  FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) FROM t2;
+(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1);
+(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1)
+NULL
+SELECT (SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) FROM t2;
+(SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a,f3a  FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) FROM t2;
+(SELECT f3a,f3a  FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) FROM t2;
+(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1);
+(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1)
+NULL
+set @@session.optimizer_switch=@old_optimizer_switch;
+SELECT (SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1) FROM t2;
+(SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a,f3a  FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1) FROM t2;
+(SELECT f3a,f3a  FROM t3 where f3a > 3) NOT IN (SELECT f1a,f1a FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1) FROM t2;
+(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1);
+(SELECT f3a, f3b FROM t3 where f3a > 3) NOT IN (SELECT f1a, f1b FROM t1)
+NULL
+SELECT (SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1) FROM t2;
+(SELECT f3a FROM t3 where f3a > 3) IN (SELECT f1a FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a,f3a  FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1) FROM t2;
+(SELECT f3a,f3a  FROM t3 where f3a > 3) IN (SELECT f1a,f1a FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1) FROM t2;
+(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1)
+NULL
+NULL
+SELECT (SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1);
+(SELECT f3a, f3b FROM t3 where f3a > 3) IN (SELECT f1a, f1b FROM t1)
+NULL
+select (null, null) = (null, null);
+(null, null) = (null, null)
+NULL
+SELECT (SELECT f3a, f3a FROM t3  where f3a > 3) = (0, 0);
+(SELECT f3a, f3a FROM t3  where f3a > 3) = (0, 0)
+NULL
+drop tables t1,t2,t3;
+#
+# LP BUG#825051 Wrong result with date/datetime and subquery with GROUP BY and in_to_exists
+#
+CREATE TABLE t1 (a date, KEY (a)) ;
+INSERT INTO t1 VALUES ('2009-01-01'),('2009-02-02');
+set @old_optimizer_switch = @@optimizer_switch;
+SET @@optimizer_switch='semijoin=off,materialization=off,in_to_exists=on,subquery_cache=off';
+EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	index	NULL	a	4	NULL	2	Using where; Using index
+2	DEPENDENT SUBQUERY	t1	index_subquery	a	a	4	func	2	Using index
+SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
+a
+2009-01-01
+2009-02-02
+SET @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=off,subquery_cache=off';
+EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	index	NULL	a	4	NULL	2	Using where; Using index
+2	MATERIALIZED	t1	index	NULL	a	4	NULL	2	Using index
+SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
+a
+2009-01-01
+2009-02-02
+set @@optimizer_switch=@old_optimizer_switch;
+drop table t1;
+#
+# LP BUG#908269 incorrect condition in case of subqueries depending
+# on constant tables
+#
+CREATE TABLE t1 ( a INT );
+INSERT INTO t1 VALUES (1),(5);
+CREATE TABLE t2 ( b INT ) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (1);
+CREATE TABLE t3 ( c INT );
+INSERT INTO t3 VALUES (4),(5);
+SET optimizer_switch='subquery_cache=off';
+SELECT ( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) ) FROM t1;
+( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) )
+1
+NULL
+SELECT ( SELECT b FROM t2 WHERE b = a OR b * 0) FROM t1;
+( SELECT b FROM t2 WHERE b = a OR b * 0)
+1
+NULL
+SELECT ( SELECT b FROM t2 WHERE b = a OR rand() * 0) FROM t1;
+( SELECT b FROM t2 WHERE b = a OR rand() * 0)
+1
+NULL
+drop table t1,t2,t3;
+# return optimizer switch changed in the beginning of this test
 set optimizer_switch=@subselect_tmp;
 set @optimizer_switch_for_subselect_test=null;