Merge 5.3->main -> 5.3-mwl90

19 files changed, 2815 insertions, 1025 deletions

diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result
index 492eb92e9c0..42b38136109 100644
--- a/mysql-test/r/subselect.result
+++ b/mysql-test/r/subselect.result
@@ -1364,7 +1364,7 @@ explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t2	index	a	a	5	NULL	4	100.00	Using where; Using index
 1	PRIMARY	t3	index	a	a	5	NULL	3	100.00	Using where; Using index
-1	PRIMARY	t1	ref	a	a	10	test.t2.a,test.t3.a	116	100.61	Using index; FirstMatch(t2)
+1	PRIMARY	t1	ref	a	a	10	test.t2.a,test.t3.a	116	100.00	Using index; FirstMatch(t2)
 Warnings:
 Note	1003	select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1` join `test`.`t3`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` = `test`.`t3`.`a`))
 insert into t1 values (3,31);
diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result
index a8102486f6b..0cf935418d4 100644
--- a/mysql-test/r/subselect4.result
+++ b/mysql-test/r/subselect4.result
@@ -1,3 +1,4 @@
+drop table if exists t1,t2,t3,t4,t5,t6;
 #
 # Bug #46791: Assertion failed:(table->key_read==0),function unknown
 #    function,file sql_base.cc
@@ -356,7 +357,7 @@ 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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
@@ -371,13 +372,13 @@ WHERE EMPNUM IN
 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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;
@@ -394,7 +395,7 @@ 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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
@@ -409,13 +410,13 @@ WHERE EMPNUM IN
 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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;
@@ -431,7 +432,7 @@ 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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
@@ -446,13 +447,13 @@ WHERE EMPNUM IN
 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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;
@@ -579,7 +580,7 @@ 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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
@@ -594,13 +595,13 @@ WHERE EMPNUM IN
 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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;
@@ -617,7 +618,7 @@ 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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
@@ -632,13 +633,13 @@ WHERE EMPNUM IN
 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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;
@@ -654,7 +655,7 @@ 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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
@@ -669,13 +670,13 @@ WHERE EMPNUM IN
 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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+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;
@@ -735,6 +736,7 @@ 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	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
 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 = (
@@ -749,6 +751,7 @@ 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	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
 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 = (
diff --git a/mysql-test/r/subselect_mat.result b/mysql-test/r/subselect_mat.result
index 144519878c1..95b4eeb5d04 100644
--- a/mysql-test/r/subselect_mat.result
+++ b/mysql-test/r/subselect_mat.result
@@ -1,4 +1,7 @@
+set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
 drop table if exists t1, t2, t3, t1i, t2i, t3i;
+drop table if exists columns;
+drop table if exists t1_16, t2_16, t3_16;
 drop view if exists v1, v2, v1m, v2m;
 create table t1 (a1 char(8), a2 char(8));
 create table t2 (b1 char(8), b2 char(8));
@@ -30,7 +33,7 @@ create index it3i3 on t3i (c1, c2);
 insert into t1i select * from t1;
 insert into t2i select * from t2;
 insert into t3i select * from t3;
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
+set @@optimizer_switch='materialization=on,in_to_exists=off,firstmatch=off';
 /******************************************************************************
 * Simple tests.
 ******************************************************************************/
@@ -41,7 +44,7 @@ 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
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`))))))
 select * from t1 where a1 in (select b1 from t2 where b1 > '0');
 a1	a2
 1 - 01	2 - 01
@@ -52,7 +55,7 @@ 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
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using temporary
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`))))))
 select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
 a1	a2
 1 - 01	2 - 01
@@ -63,7 +66,7 @@ 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
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using temporary
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`))))))
 select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
 a1	a2
 1 - 01	2 - 01
@@ -74,7 +77,7 @@ 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
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using temporary
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,min(`test`.`t2`.`b2`) from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`min(b2)`))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,min(`test`.`t2`.`b2`) from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`min(b2)`))))))
 select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
 a1	a2
 1 - 01	2 - 01
@@ -82,10 +85,10 @@ a1	a2
 explain extended
 select * from t1i where a1 in (select b1 from t2i where b1 > '0');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	PRIMARY	t1i	index	NULL	it1i3	18	NULL	3	100.00	Using where; Using index
-2	SUBQUERY	t2i	index	it2i1,it2i3	it2i1	9	NULL	5	100.00	Using where; Using index
+1	PRIMARY	t1i	index	NULL	_it1_idx	#	NULL	3	100.00	Using where; 
+2	SUBQUERY	t2i	index	it2i1,it2i3	it2i1	#	NULL	5	100.00	Using where; 
 Warnings:
-Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`))))))
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`))))))
 select * from t1i where a1 in (select b1 from t2i where b1 > '0');
 a1	a2
 1 - 01	2 - 01
@@ -93,10 +96,10 @@ a1	a2
 explain extended
 select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	PRIMARY	t1i	index	NULL	it1i3	18	NULL	3	100.00	Using where; Using index
-2	SUBQUERY	t2i	range	it2i1,it2i3	it2i1	9	NULL	3	100.00	Using where; Using index for group-by
+1	PRIMARY	t1i	index	NULL	#	18	#	3	100.00	#
+2	SUBQUERY	t2i	range	it2i1,it2i3	#	9	#	3	100.00	#
 Warnings:
-Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`))))))
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`))))))
 select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
 a1	a2
 1 - 01	2 - 01
@@ -104,10 +107,10 @@ a1	a2
 explain extended
 select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	PRIMARY	t1i	index	NULL	it1i3	18	NULL	3	100.00	Using where; Using index
-2	SUBQUERY	t2i	index	it2i1,it2i3	it2i3	18	NULL	5	100.00	Using where; Using index
+1	PRIMARY	t1i	index	NULL	_it1_idx	#	NULL	3	100.00	Using where; 
+2	SUBQUERY	t2i	index	it2i1,it2i3	it2i3	#	NULL	5	100.00	Using where; 
 Warnings:
-Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`))))))
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`b2`))))))
 select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
 a1	a2
 1 - 01	2 - 01
@@ -115,10 +118,10 @@ a1	a2
 explain extended
 select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	PRIMARY	t1i	index	NULL	it1i3	18	NULL	3	100.00	Using where; Using index
-2	SUBQUERY	t2i	range	it2i1,it2i3	it2i3	18	NULL	3	100.00	Using where; Using index for group-by
+1	PRIMARY	t1i	index	NULL	#	#	#	3	100.00	#
+2	SUBQUERY	t2i	range	it2i1,it2i3	#	#	#	3	100.00	#
 Warnings:
-Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`))))))
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`b2`))))))
 select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
 a1	a2
 1 - 01	2 - 01
@@ -126,10 +129,10 @@ a1	a2
 explain extended
 select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	PRIMARY	t1i	index	NULL	it1i3	18	NULL	3	100.00	Using where; Using index
-2	SUBQUERY	t2i	range	it2i1,it2i3	it2i3	18	NULL	3	100.00	Using where; Using index for group-by
+1	PRIMARY	t1i	index	NULL	#	#	#	3	100.00	#
+2	SUBQUERY	t2i	range	it2i1,it2i3	#	#	#	3	100.00	#
 Warnings:
-Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`min(b2)`))))))
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`min(b2)`))))))
 select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
 a1	a2
 1 - 01	2 - 01
@@ -140,7 +143,7 @@ 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
 2	SUBQUERY	t2i	range	NULL	it2i3	9	NULL	3	100.00	Using index for group-by
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`max(b2)`))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`max(b2)`))))))
 select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
 a1	a2
 1 - 01	2 - 01
@@ -169,47 +172,48 @@ 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
 2	SUBQUERY	t2i	range	it2i1,it2i3	it2i3	18	NULL	3	100.00	Using where; Using index for group-by
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`min(b2)`))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`min(b2)`))))))
 select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
 a1	a2
 1 - 01	2 - 01
 1 - 02	2 - 02
 select * from t1 where (a1, a2) in (select b1, min(b2) from t2i limit 1,1);
 ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=on';
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='default,semijoin=off';
 prepare st1 from
 "select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=on';
+set @@optimizer_switch='default,materialization=off';
 execute st1;
 a1	a2
 1 - 01	2 - 01
 1 - 02	2 - 02
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=on';
+set @@optimizer_switch='default,semijoin=off';
 execute st1;
 a1	a2
 1 - 01	2 - 01
 1 - 02	2 - 02
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=on';
+set @@optimizer_switch='default,materialization=off';
 prepare st1 from
 "select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
+set @@optimizer_switch='default,semijoin=off';
 execute st1;
 a1	a2
 1 - 01	2 - 01
 1 - 02	2 - 02
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=on';
+set @@optimizer_switch='default,materialization=off';
 execute st1;
 a1	a2
 1 - 01	2 - 01
 1 - 02	2 - 02
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
+set @@optimizer_switch=@save_optimizer_switch;
 explain extended
 select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
 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
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` order by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` order by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`))))))
 select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
 a1	a2
 1 - 01	2 - 01
@@ -220,7 +224,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1i	index	NULL	it1i3	18	NULL	3	100.00	Using where; Using index
 2	SUBQUERY	t2i	index	NULL	it2i3	18	NULL	5	100.00	Using index
 Warnings:
-Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` order by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`))))))
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` order by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`b2`))))))
 select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
 a1	a2
 1 - 01	2 - 01
@@ -275,7 +279,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 4	SUBQUERY	t2i	index	it2i2	it2i3	18	NULL	5	100.00	Using where; Using index
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`)))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery4>`.`b1`) and (`test`.`t3`.`c2` = `<subquery4>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery3>`.`c1`) and (`test`.`t1`.`a2` = `<subquery3>`.`c2`)))))))
 select * from t1
 where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
 (a1, a2) in (select c1, c2 from t3
@@ -289,12 +293,12 @@ where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
 (a1, a2) in (select c1, c2 from t3i
 where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	PRIMARY	t1i	index	NULL	it1i3	18	NULL	3	100.00	Using where; Using index
-3	SUBQUERY	t3i	index	NULL	it3i3	18	NULL	4	100.00	Using where; Using index
-4	SUBQUERY	t2i	index	it2i2	it2i3	18	NULL	5	100.00	Using where; Using index
-2	SUBQUERY	t2i	index	it2i1,it2i3	it2i3	18	NULL	5	100.00	Using where; Using index
+1	PRIMARY	t1i	index	NULL	#	#	#	3	100.00	#
+3	SUBQUERY	t3i	index	NULL	#	#	#	4	100.00	#
+4	SUBQUERY	t2i	index	it2i2	#	#	#	5	100.00	#
+2	SUBQUERY	t2i	index	it2i1,it2i3	#	#	#	5	100.00	#
 Warnings:
-Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c2`,`test`.`t3i`.`c1`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where ((`test`.`t3i`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3i`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`c2`)))))))
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`b2`)))))) and <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c2`,`test`.`t3i`.`c1`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where ((`test`.`t3i`.`c1` = `<subquery4>`.`b1`) and (`test`.`t3i`.`c2` = `<subquery4>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery3>`.`c1`) and (`test`.`t1i`.`a2` = `<subquery3>`.`c2`)))))))
 select * from t1i
 where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
 (a1, a2) in (select c1, c2 from t3i
@@ -317,7 +321,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 4	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
 3	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`))))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`)))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery3>`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery6>`.`b1`) and (`test`.`t3`.`c2` = `<subquery6>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery5>`.`c1`) and (`test`.`t1`.`a2` = `<subquery5>`.`c2`)))))))
 select * from t1
 where (a1, a2) in (select b1, b2 from t2
 where b2 in (select c2 from t3 where c2 LIKE '%02') or
@@ -342,7 +346,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 3	DEPENDENT SUBQUERY	t3a	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
 Warnings:
 Note	1276	Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`))))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where <expr_cache><`test`.`t3c`.`c2`,`test`.`t3c`.`c1`>(<in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),(`test`.`t3c`.`c1`,`test`.`t3c`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3c`.`c1` in <temporary table> on distinct_key where ((`test`.`t3c`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3c`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`)))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where <expr_cache><`test`.`t3c`.`c2`,`test`.`t3c`.`c1`>(<in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),(`test`.`t3c`.`c1`,`test`.`t3c`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3c`.`c1` in <temporary table> on distinct_key where ((`test`.`t3c`.`c1` = `<subquery6>`.`b1`) and (`test`.`t3c`.`c2` = `<subquery6>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery5>`.`c1`) and (`test`.`t1`.`a2` = `<subquery5>`.`c2`)))))))
 select * from t1
 where (a1, a2) in (select b1, b2 from t2
 where b2 in (select c2 from t3 t3a where c1 = a1) or
@@ -366,19 +370,19 @@ where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
 (a1, a2) in (select c1, c2 from t3i
 where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
 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
-5	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
-6	SUBQUERY	t2i	index	it2i2	it2i3	18	NULL	5	100.00	Using where; Using index
-2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using temporary
-4	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
-3	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
-7	UNION	t1i	index	NULL	it1i3	18	NULL	3	100.00	Using where; Using index
-9	SUBQUERY	t3i	index	NULL	it3i3	18	NULL	4	100.00	Using where; Using index
-10	SUBQUERY	t2i	index	it2i2	it2i3	18	NULL	5	100.00	Using where; Using index
-8	SUBQUERY	t2i	index	it2i1,it2i3	it2i3	18	NULL	5	100.00	Using where; Using index
-NULL	UNION RESULT	<union1,7>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
+1	PRIMARY	t1	ALL	NULL	#	#	#	3	100.00	#
+5	SUBQUERY	t3	ALL	NULL	#	#	#	4	100.00	#
+6	SUBQUERY	t2i	index	it2i2	#	#	#	5	100.00	#
+2	SUBQUERY	t2	ALL	NULL	#	#	#	5	100.00	#
+4	SUBQUERY	t3	ALL	NULL	#	#	#	4	100.00	#
+3	SUBQUERY	t3	ALL	NULL	#	#	#	4	100.00	#
+7	UNION	t1i	index	NULL	#	#	#	3	100.00	#
+9	SUBQUERY	t3i	index	NULL	#	#	#	4	100.00	#
+10	SUBQUERY	t2i	index	it2i2	#	#	#	5	100.00	#
+8	SUBQUERY	t2i	index	it2i1,it2i3	#	#	#	5	100.00	#
+NULL	UNION RESULT	<union1,7>	ALL	NULL	#	#	#	NULL	NULL	#
 Warnings:
-Note	1003	(select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`))))))) group by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`)))))))) union (select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c2`,`test`.`t3i`.`c1`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where ((`test`.`t3i`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3i`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`c2`))))))))
+Note	1003	(select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery3>`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) group by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery6>`.`b1`) and (`test`.`t3`.`c2` = `<subquery6>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery5>`.`c1`) and (`test`.`t1`.`a2` = `<subquery5>`.`c2`)))))))) union (select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery8>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery8>`.`b2`)))))) and <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c2`,`test`.`t3i`.`c1`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where ((`test`.`t3i`.`c1` = `<subquery10>`.`b1`) and (`test`.`t3i`.`c2` = `<subquery10>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery9>`.`c1`) and (`test`.`t1i`.`a2` = `<subquery9>`.`c2`))))))))
 (select * from t1
 where (a1, a2) in (select b1, b2 from t2
 where b2 in (select c2 from t3 where c2 LIKE '%02') or
@@ -407,7 +411,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 3	DEPENDENT UNION	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
 NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`)))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery5>`.`b1`) and (`test`.`t3`.`c2` = `<subquery5>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery4>`.`c1`) and (`test`.`t1`.`a2` = `<subquery4>`.`c2`)))))))
 select * from t1
 where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
 (a1, a2) in (select c1, c2 from t3
@@ -430,7 +434,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 3	DEPENDENT UNION	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
 NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2`,`test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`c1` = `test`.`t1`.`a1`) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`c1`) and (`test`.`t3`.`c2` = `materialized subselect`.`c2`)))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2`,`test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`c1` = `test`.`t1`.`a1`) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery5>`.`b1`) and (`test`.`t3`.`c2` = `<subquery5>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery4>`.`c1`) and (`test`.`t3`.`c2` = `<subquery4>`.`c2`)))))))
 select * from t1, t3
 where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
 (c1, c2) in (select c1, c2 from t3
@@ -476,7 +480,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 Warnings:
 Note	1276	Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
 Note	1276	Field or reference 'test.t1.a2' of SELECT #6 was resolved in SELECT #1
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`))))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where (<expr_cache><`test`.`t3c`.`c2`,`test`.`t3c`.`c1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),<exists>(<index_lookup>(<cache>(`test`.`t3c`.`c1`) in t2i on it2i3 where (((`test`.`t2i`.`b2` > '0') or (`test`.`t2i`.`b2` = `test`.`t1`.`a2`)) and (<cache>(`test`.`t3c`.`c1`) = `test`.`t2i`.`b1`) and (<cache>(`test`.`t3c`.`c2`) = `test`.`t2i`.`b2`)))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t3c`.`c1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t3c`.`c2`))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where (<expr_cache><`test`.`t3c`.`c2`,`test`.`t3c`.`c1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),<exists>(<index_lookup>(<cache>(`test`.`t3c`.`c1`) in t2i on it2i3 where (((`test`.`t2i`.`b2` > '0') or (`test`.`t2i`.`b2` = `test`.`t1`.`a2`)) and (<cache>(`test`.`t3c`.`c1`) = `test`.`t2i`.`b1`) and (<cache>(`test`.`t3c`.`c2`) = `test`.`t2i`.`b2`)))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t3c`.`c1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t3c`.`c2`))))))
 explain extended
 select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
@@ -549,7 +553,6 @@ a1	a2
 Test that BLOBs are not materialized (except when arguments of some functions).
 */
 # force materialization to be always considered
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
 set @prefix_len = 6;
 set @blob_len = 16;
 set @suffix_len = @blob_len - @prefix_len;
@@ -611,7 +614,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 Warnings:
-Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (select substr(`test`.`t2_16`.`b1`,1,16) from `test`.`t2_16` where (`test`.`t2_16`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_16`.`a1` = `materialized subselect`.`substring(b1,1,16)`))))))
+Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (select substr(`test`.`t2_16`.`b1`,1,16) from `test`.`t2_16` where (`test`.`t2_16`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_16`.`a1` = `<subquery2>`.`substring(b1,1,16)`))))))
 select left(a1,7), left(a2,7)
 from t1_16
 where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
@@ -640,7 +643,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
 Warnings:
-Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2` ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_16`.`a1` = `materialized subselect`.`group_concat(b1)`))))))
+Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2` ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_16`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
 select left(a1,7), left(a2,7)
 from t1_16
 where a1 in (select group_concat(b1) from t2_16 group by b2);
@@ -662,7 +665,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 3	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using join buffer (flat, BNL join)
 4	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><concat(`test`.`t1`.`a1`,'x')>(<in_optimizer>(concat(`test`.`t1`.`a1`,'x'),<exists>(select left(`test`.`t1_16`.`a1`,8) from `test`.`t1_16` where (<expr_cache><`test`.`t1_16`.`a2`,`test`.`t1_16`.`a1`>(<in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(select `test`.`t2_16`.`b1`,`test`.`t2_16`.`b2` from `test`.`t2_16` join `test`.`t2` where ((`test`.`t2`.`b2` = substr(`test`.`t2_16`.`b2`,1,6)) and <expr_cache><`test`.`t2`.`b1`>(<in_optimizer>(`test`.`t2`.`b1`,`test`.`t2`.`b1` in ( <materialize> (select `test`.`t3`.`c1` from `test`.`t3` where (`test`.`t3`.`c2` > '0') ), <primary_index_lookup>(`test`.`t2`.`b1` in <temporary table> on distinct_key where ((`test`.`t2`.`b1` = `materialized subselect`.`c1`)))))) and (<cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1`) and (<cache>(`test`.`t1_16`.`a2`) = `test`.`t2_16`.`b2`))))) and (<cache>(concat(`test`.`t1`.`a1`,'x')) = left(`test`.`t1_16`.`a1`,8))))))
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><concat(`test`.`t1`.`a1`,'x')>(<in_optimizer>(concat(`test`.`t1`.`a1`,'x'),<exists>(select left(`test`.`t1_16`.`a1`,8) from `test`.`t1_16` where (<expr_cache><`test`.`t1_16`.`a2`,`test`.`t1_16`.`a1`>(<in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(select `test`.`t2_16`.`b1`,`test`.`t2_16`.`b2` from `test`.`t2_16` join `test`.`t2` where ((`test`.`t2`.`b2` = substr(`test`.`t2_16`.`b2`,1,6)) and <expr_cache><`test`.`t2`.`b1`>(<in_optimizer>(`test`.`t2`.`b1`,`test`.`t2`.`b1` in ( <materialize> (select `test`.`t3`.`c1` from `test`.`t3` where (`test`.`t3`.`c2` > '0') ), <primary_index_lookup>(`test`.`t2`.`b1` in <temporary table> on distinct_key where ((`test`.`t2`.`b1` = `<subquery4>`.`c1`)))))) and (<cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1`) and (<cache>(`test`.`t1_16`.`a2`) = `test`.`t2_16`.`b2`))))) and (<cache>(concat(`test`.`t1`.`a1`,'x')) = left(`test`.`t1_16`.`a1`,8))))))
 drop table t1_16, t2_16, t3_16;
 set @blob_len = 512;
 set @suffix_len = @blob_len - @prefix_len;
@@ -724,7 +727,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 Warnings:
-Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select substr(`test`.`t2_512`.`b1`,1,512) from `test`.`t2_512` where (`test`.`t2_512`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `materialized subselect`.`substring(b1,1,512)`))))))
+Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select substr(`test`.`t2_512`.`b1`,1,512) from `test`.`t2_512` where (`test`.`t2_512`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `<subquery2>`.`substring(b1,1,512)`))))))
 select left(a1,7), left(a2,7)
 from t1_512
 where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
@@ -738,7 +741,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
 Warnings:
-Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `materialized subselect`.`group_concat(b1)`))))))
+Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
 select left(a1,7), left(a2,7)
 from t1_512
 where a1 in (select group_concat(b1) from t2_512 group by b2);
@@ -751,7 +754,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
 Warnings:
-Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `materialized subselect`.`group_concat(b1)`))))))
+Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
 select left(a1,7), left(a2,7)
 from t1_512
 where a1 in (select group_concat(b1) from t2_512 group by b2);
@@ -831,7 +834,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
 Warnings:
-Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1024`.`a1` = `materialized subselect`.`group_concat(b1)`))))))
+Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
 select left(a1,7), left(a2,7)
 from t1_1024
 where a1 in (select group_concat(b1) from t2_1024 group by b2);
@@ -844,7 +847,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
 Warnings:
-Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1024`.`a1` = `materialized subselect`.`group_concat(b1)`))))))
+Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
 select left(a1,7), left(a2,7)
 from t1_1024
 where a1 in (select group_concat(b1) from t2_1024 group by b2);
@@ -924,7 +927,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
 Warnings:
-Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1025`.`a1` = `materialized subselect`.`group_concat(b1)`))))))
+Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
 select left(a1,7), left(a2,7)
 from t1_1025
 where a1 in (select group_concat(b1) from t2_1025 group by b2);
@@ -937,7 +940,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
 Warnings:
-Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1025`.`a1` = `materialized subselect`.`group_concat(b1)`))))))
+Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
 select left(a1,7), left(a2,7)
 from t1_1025
 where a1 in (select group_concat(b1) from t2_1025 group by b2);
@@ -951,7 +954,6 @@ insert into t1bit values (b'010', b'110');
 insert into t2bit values (b'001', b'101');
 insert into t2bit values (b'010', b'110');
 insert into t2bit values (b'110', b'111');
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
 explain extended select bin(a1), bin(a2)
 from t1bit
 where (a1, a2) in (select b1, b2 from t2bit);
@@ -959,7 +961,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1bit	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
 2	SUBQUERY	t2bit	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
-Note	1003	select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` where <expr_cache><`test`.`t1bit`.`a2`,`test`.`t1bit`.`a1`>(<in_optimizer>((`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`),(`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`) in ( <materialize> (select `test`.`t2bit`.`b1`,`test`.`t2bit`.`b2` from `test`.`t2bit` ), <primary_index_lookup>(`test`.`t1bit`.`a1` in <temporary table> on distinct_key where ((`test`.`t1bit`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1bit`.`a2` = `materialized subselect`.`b2`))))))
+Note	1003	select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` where <expr_cache><`test`.`t1bit`.`a2`,`test`.`t1bit`.`a1`>(<in_optimizer>((`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`),(`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`) in ( <materialize> (select `test`.`t2bit`.`b1`,`test`.`t2bit`.`b2` from `test`.`t2bit` ), <primary_index_lookup>(`test`.`t1bit`.`a1` in <temporary table> on distinct_key where ((`test`.`t1bit`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1bit`.`a2` = `<subquery2>`.`b2`))))))
 select bin(a1), bin(a2)
 from t1bit
 where (a1, a2) in (select b1, b2 from t2bit);
@@ -994,7 +996,7 @@ drop table t1, t2, t3, t1i, t2i, t3i, columns;
 /******************************************************************************
 * Test the cache of the left operand of IN.
 ******************************************************************************/
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
+# Test that default values of Cached_item are not used for comparison
 create table t1 (s1 int);
 create table t2 (s2 int);
 insert into t1 values (5),(1),(0);
@@ -1030,7 +1032,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`))))))
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
 select a from t1 where a in (select c from t2 where d >= 20);
 a
 2
@@ -1044,7 +1046,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1	index	NULL	it1a	4	NULL	7	100.00	Using where; Using index
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`))))))
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
 select a from t1 where a in (select c from t2 where d >= 20);
 a
 2
@@ -1058,7 +1060,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1	index	NULL	it1a	4	NULL	7	100.00	Using where; Using index
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`))))))
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
 select a from t1 where a in (select c from t2 where d >= 20);
 a
 2
@@ -1071,7 +1073,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1	index	NULL	it1a	4	NULL	7	100.00	Using index
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`))))))
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
 select a from t1 group by a having a in (select c from t2 where d >= 20);
 a
 2
@@ -1083,7 +1085,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t1	index	NULL	it1a	4	NULL	7	100.00	Using index
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`))))))
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
 select a from t1 group by a having a in (select c from t2 where d >= 20);
 a
 2
@@ -1136,47 +1138,47 @@ drop table t2;
 create table t1 (a1 int key);
 create table t2 (b1 int);
 insert into t1 values (5);
-Only the last query returns correct result. Filed as BUG#40037.
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
 explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
 select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
 min(a1)
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='default,materialization=off';
 explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
 2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
 select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
 min(a1)
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-explain select min(a1) from t1 where 7 in (select b1 from t2);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
-2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
-select min(a1) from t1 where 7 in (select b1 from t2);
-min(a1)
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
+set @@optimizer_switch='default,semijoin=off';
 explain select min(a1) from t1 where 7 in (select b1 from t2);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
 2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
 select min(a1) from t1 where 7 in (select b1 from t2);
 min(a1)
-set @@optimizer_switch='materialization=off,in_to_exists=off,semijoin=on';
+set @@optimizer_switch='default,materialization=off';
+# with MariaDB and MWL#90, this particular case is solved:
 explain select min(a1) from t1 where 7 in (select b1 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
 select min(a1) from t1 where 7 in (select b1 from t2);
 min(a1)
 NULL
+# but when we go around MWL#90 code, the problem still shows up:
+explain select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
+min(a1)
+set @@optimizer_switch= @save_optimizer_switch;
 drop table t1,t2;
 create table t1 (a char(2), b varchar(10));
 insert into t1 values ('a',  'aaa');
 insert into t1 values ('aa', 'aaaa');
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
 explain select a,b from t1 where b in (select a from t1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
@@ -1196,15 +1198,17 @@ INSERT INTO t1 (f1, f2) VALUES (10, 1.668);
 CREATE TABLE t2 LIKE t1;
 INSERT INTO t2 VALUES (1, 1.789);
 INSERT INTO t2 VALUES (13, 1.454);
-SET @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=on';
+set @save_optimizer_switch=@@optimizer_switch;
+SET @@optimizer_switch='default,semijoin=on,materialization=on';
 EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	subselect2	ALL	unique_key	NULL	NULL	NULL	2	
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	2	
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	Using where; Using join buffer (flat, BNL join)
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	
 SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
 COUNT(*)
 2
+set @@optimizer_switch= @save_optimizer_switch;
 DROP TABLE t1, t2;
 CREATE TABLE t1 (
 pk int,
@@ -1217,11 +1221,12 @@ PRIMARY KEY (pk)
 INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff');
 CREATE TABLE t2 LIKE t1;
 INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff');
-SET @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=on';
+set @save_optimizer_switch=@@optimizer_switch;
+SET @@optimizer_switch='default,semijoin=on,materialization=on';
 EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
-1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	5	func	1	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
 2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Rowid-ordered scan
 SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
 pk
@@ -1230,6 +1235,7 @@ SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0);
 pk
 2
 DROP TABLE t1, t2;
+set optimizer_switch=@save_optimizer_switch;
 #
 # BUG#50019: Wrong result for IN-subquery with materialization
 #
@@ -1281,6 +1287,66 @@ a	a in (select a from t1)
 1	0
 2	0
 drop table t0, t1;
+set optimizer_switch='firstmatch=on';
+#
+# MWL#90, review feedback: check what happens when the subquery
+#   looks like candidate for MWL#90 checking at the first glance
+#   but then subselect_hash_sj_engine::init_permanent() discovers
+#   that it's not possible to perform duplicate removal for the 
+#   selected datatypes, and so materialization isn't applicable after
+#   all.
+#
+set @blob_len = 1024;
+set @suffix_len = @blob_len - @prefix_len;
+create table t1_1024 (a1 blob(1024), a2 blob(1024));
+create table t2_1024 (b1 blob(1024), b2 blob(1024));
+insert into t1_1024 values
+(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_1024 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_1024 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+explain select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	Using where
+2	DEPENDENT SUBQUERY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	Using where
+select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+drop table t1_1024, t2_1024;
+set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
+create table t0 (a int);
+insert into t0 values (0),(1),(2);
+create table t1 (a int);
+insert into t1 values (0),(1),(2);
+explain select a, a in (select a from t1) from t0;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t0	ALL	NULL	NULL	NULL	NULL	3	
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	
+select a, a in (select a from t1) from t0;
+a	a in (select a from t1)
+0	1
+1	1
+2	1
+prepare s from 'select a, a in (select a from t1) from t0';
+execute s;
+a	a in (select a from t1)
+0	1
+1	1
+2	1
+update t1 set a=123;
+execute s;
+a	a in (select a from t1)
+0	0
+1	0
+2	0
+drop table t0, t1;
 #
 # LPBUG#609121: RQG: wrong result on aggregate + NOT IN + HAVING and
 # partial_match_table_scan=on
@@ -1371,7 +1437,7 @@ SET @@optimizer_switch='default,semijoin=on,materialization=on';
 EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
-1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	5	func	1	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
 2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Rowid-ordered scan
 SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
 pk
@@ -1381,6 +1447,29 @@ pk
 2
 DROP TABLE t1, t2;
 #
+# BUG#724228: Wrong result with materialization=on and three aggregates in maria-5.3-mwl90
+#
+CREATE TABLE t1 ( f2 int(11)) ;
+INSERT IGNORE INTO t1 VALUES ('7'),('9'),('7'),('4'),('2'),('6'),('8'),('5'),('6'),('188'),('2'),('1'),('1'),('0'),('9'),('4');
+CREATE TABLE t2 ( f1 int(11), f2 int(11)) ENGINE=MyISAM;
+INSERT IGNORE INTO t2 VALUES ('1','1');
+CREATE TABLE t3 ( f1 int(11), f2 int(11), f3 int(11), PRIMARY KEY (f1)) ;
+INSERT IGNORE INTO t3 VALUES ('16','6','1'),('18','3','4'),('19',NULL,'9'),('20','0','6'),('41','2','0'),('42','2','5'),('43','9','6'),('44','7','4'),('45','1','4'),('46','222','238'),('47','3','6'),('48','6','6'),('49',NULL,'1'),('50','5','1');
+SET @_save_join_cache_level = @@join_cache_level;
+SET @_save_optimizer_switch = @@optimizer_switch;
+SET join_cache_level = 1;
+SET optimizer_switch='materialization=on';
+SELECT f1 FROM t3
+WHERE 
+f1 NOT IN (SELECT MAX(f2) FROM t1) AND 
+f3 IN (SELECT MIN(f1) FROM t2) AND 
+f1 IN (SELECT COUNT(f2) FROM t1);
+f1
+16
+SET @@join_cache_level = @_save_join_cache_level;
+SET @@optimizer_switch = @_save_optimizer_switch;
+drop table t1, t2, t3;
+#
 # LPBUG#719198 Ordered_key::cmp_key_with_search_key(rownum_t): Assertion `!compare_pred[i]->null_value'
 # failed with subquery on both sides of NOT IN and materialization
 #
diff --git a/mysql-test/r/subselect_no_mat.result b/mysql-test/r/subselect_no_mat.result
index bab40911084..7acaad7e659 100644
--- a/mysql-test/r/subselect_no_mat.result
+++ b/mysql-test/r/subselect_no_mat.result
@@ -1368,7 +1368,7 @@ explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	PRIMARY	t2	index	a	a	5	NULL	4	100.00	Using where; Using index
 1	PRIMARY	t3	index	a	a	5	NULL	3	100.00	Using where; Using index
-1	PRIMARY	t1	ref	a	a	10	test.t2.a,test.t3.a	116	100.61	Using index; FirstMatch(t2)
+1	PRIMARY	t1	ref	a	a	10	test.t2.a,test.t3.a	116	100.00	Using index; FirstMatch(t2)
 Warnings:
 Note	1003	select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1` join `test`.`t3`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` = `test`.`t3`.`a`))
 insert into t1 values (3,31);
diff --git a/mysql-test/r/subselect_sj.result b/mysql-test/r/subselect_sj.result
index 3d8a1f1d741..2df5089b064 100644
--- a/mysql-test/r/subselect_sj.result
+++ b/mysql-test/r/subselect_sj.result
@@ -961,7 +961,7 @@ 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	t1	ref	varchar_key	varchar_key	3	test.t2.varchar_nokey	2	105.00	Using where; FirstMatch(t2)
+1	PRIMARY	t1	ref	varchar_key	varchar_key	3	test.t2.varchar_nokey	2	100.00	Using where; FirstMatch(t2)
 Warnings:
 Note	1003	select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_key` = `test`.`t2`.`varchar_nokey`) and (`test`.`t1`.`varchar_nokey` = `test`.`t2`.`varchar_nokey`) and ((`test`.`t2`.`varchar_nokey` < 'n') xor `test`.`t1`.`pk`))
 SELECT varchar_nokey
diff --git a/mysql-test/r/subselect_sj2.result b/mysql-test/r/subselect_sj2.result
index 99c8b4bb01a..e4bf6488d5e 100644
--- a/mysql-test/r/subselect_sj2.result
+++ b/mysql-test/r/subselect_sj2.result
@@ -354,6 +354,10 @@ Canada
 China
 Czech Republic
 drop table t1, t2;
+drop procedure if exists p1;
+drop procedure if exists p2;
+drop procedure if exists p3;
+drop procedure if exists p4;
 CREATE TABLE t1(a INT);
 CREATE TABLE t2(c INT);
 CREATE PROCEDURE p1(v1 int)
diff --git a/mysql-test/r/subselect_sj2_jcl6.result b/mysql-test/r/subselect_sj2_jcl6.result
index cbf3fce7a0a..d3101e1dc80 100644
--- a/mysql-test/r/subselect_sj2_jcl6.result
+++ b/mysql-test/r/subselect_sj2_jcl6.result
@@ -361,6 +361,10 @@ Canada
 China
 Czech Republic
 drop table t1, t2;
+drop procedure if exists p1;
+drop procedure if exists p2;
+drop procedure if exists p3;
+drop procedure if exists p4;
 CREATE TABLE t1(a INT);
 CREATE TABLE t2(c INT);
 CREATE PROCEDURE p1(v1 int)
diff --git a/mysql-test/r/subselect_sj2_mat.result b/mysql-test/r/subselect_sj2_mat.result
index b4e5dfa962a..884e186743b 100644
--- a/mysql-test/r/subselect_sj2_mat.result
+++ b/mysql-test/r/subselect_sj2_mat.result
@@ -33,7 +33,7 @@ a	b
 9	5
 explain select * from t2 where b in (select a from t1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	subselect2	ALL	unique_key	NULL	NULL	NULL	3	
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	3	
 1	PRIMARY	t2	ref	b	b	5	test.t1.a	2	
 2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	Using where
 select * from t2 where b in (select a from t1);
@@ -53,7 +53,7 @@ insert into t3 select a,a, a,a,a from t0;
 explain select * from t3 where b in (select a from t1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t3	ALL	b	NULL	NULL	NULL	10	
-1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	5	func	1	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
 2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	
 select * from t3 where b in (select a from t1);
 a	b	pk1	pk2	pk3
@@ -76,7 +76,7 @@ A.a + 10*B.a, A.a + 10*B.a, A.a + 10*B.a, A.a + 10*B.a
 from t0 A, t0 B where B.a <5;
 explain select * from t3 where b in (select a from t0);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	subselect2	ALL	unique_key	NULL	NULL	NULL	10	
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	10	
 1	PRIMARY	t3	ref	b	b	5	test.t0.a	1	
 2	SUBQUERY	t0	ALL	NULL	NULL	NULL	NULL	10	Using where
 set @save_ecp= @@engine_condition_pushdown;
@@ -103,7 +103,7 @@ set max_heap_table_size= @save_max_heap_table_size;
 explain select * from t1 where a in (select b from t2);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	
-1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	5	func	1	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
 2	SUBQUERY	t2	index	b	b	5	NULL	10	Using index
 select * from t1;
 a	b
@@ -131,7 +131,7 @@ explain select
 a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z 
 from t1 ot where a in (select a from t2 it);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	subselect2	ALL	unique_key	NULL	NULL	NULL	22	
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	22	
 1	PRIMARY	ot	ALL	NULL	NULL	NULL	NULL	32	Using where; Using join buffer (flat, BNL join)
 2	SUBQUERY	it	ALL	NULL	NULL	NULL	NULL	22	
 select 
@@ -165,7 +165,7 @@ a, mid(filler1, 1,10), length(filler1)=length(filler2)
 from t2 ot where a in (select a from t1 it);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	ot	ALL	NULL	NULL	NULL	NULL	22	
-1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	5	func	1	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
 2	SUBQUERY	it	ALL	NULL	NULL	NULL	NULL	32	
 select 
 a, mid(filler1, 1,10), length(filler1)=length(filler2) 
@@ -199,7 +199,7 @@ explain select
 a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z 
 from t1 ot where a in (select a from t2 it);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	subselect2	ALL	unique_key	NULL	NULL	NULL	22	
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	22	
 1	PRIMARY	ot	ALL	NULL	NULL	NULL	NULL	52	Using where; Using join buffer (flat, BNL join)
 2	SUBQUERY	it	ALL	NULL	NULL	NULL	NULL	22	
 select 
@@ -233,7 +233,7 @@ a, mid(filler1, 1,10), length(filler1)=length(filler2)
 from t2 ot where a in (select a from t1 it);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	ot	ALL	NULL	NULL	NULL	NULL	22	
-1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	5	func	1	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
 2	SUBQUERY	it	ALL	NULL	NULL	NULL	NULL	52	
 select 
 a, mid(filler1, 1,10), length(filler1)=length(filler2) 
@@ -353,7 +353,7 @@ WHERE t1.Code IN (
 SELECT t2.CountryCode FROM t2 WHERE Population > 5000000);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	ALL	PRIMARY	NULL	NULL	NULL	31	
-1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	3	func	1	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	
 2	SUBQUERY	t2	ALL	CountryCode	NULL	NULL	NULL	545	Using where
 SELECT Name FROM t1 
 WHERE t1.Code IN (
@@ -364,6 +364,10 @@ Canada
 China
 Czech Republic
 drop table t1, t2;
+drop procedure if exists p1;
+drop procedure if exists p2;
+drop procedure if exists p3;
+drop procedure if exists p4;
 CREATE TABLE t1(a INT);
 CREATE TABLE t2(c INT);
 CREATE PROCEDURE p1(v1 int)
@@ -697,7 +701,7 @@ The following must use loose index scan over t3, key a:
 explain select count(a) from t2 where a in ( SELECT  a FROM t3);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t2	index	a	a	5	NULL	1000	Using index
-1	PRIMARY	subselect2	eq_ref	unique_key	unique_key	5	func	1	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
 2	SUBQUERY	t3	index	a	a	5	NULL	30000	Using index
 select count(a) from t2 where a in ( SELECT  a FROM t3);
 count(a)
diff --git a/mysql-test/r/subselect_sj_jcl6.result b/mysql-test/r/subselect_sj_jcl6.result
index c804cfb8892..22335c25655 100644
--- a/mysql-test/r/subselect_sj_jcl6.result
+++ b/mysql-test/r/subselect_sj_jcl6.result
@@ -969,7 +969,7 @@ 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	t1	ref	varchar_key	varchar_key	3	test.t2.varchar_nokey	2	105.00	Using where; FirstMatch(t2); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
+1	PRIMARY	t1	ref	varchar_key	varchar_key	3	test.t2.varchar_nokey	2	100.00	Using where; FirstMatch(t2); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
 Warnings:
 Note	1003	select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_key` = `test`.`t2`.`varchar_nokey`) and (`test`.`t1`.`varchar_nokey` = `test`.`t2`.`varchar_nokey`) and ((`test`.`t2`.`varchar_nokey` < 'n') xor `test`.`t1`.`pk`))
 SELECT varchar_nokey
diff --git a/mysql-test/r/subselect_sj_mat.result b/mysql-test/r/subselect_sj_mat.result
new file mode 100644
index 00000000000..f1e26561f4c
--- /dev/null
+++ b/mysql-test/r/subselect_sj_mat.result
@@ -0,0 +1,1360 @@
+drop table if exists t1, t2, t3, t1i, t2i, t3i;
+drop table if exists columns;
+drop table if exists t1_16, t2_16, t3_16;
+drop view if exists v1, v2, v1m, v2m;
+create table t1 (a1 char(8), a2 char(8));
+create table t2 (b1 char(8), b2 char(8));
+create table t3 (c1 char(8), c2 char(8));
+insert into t1 values ('1 - 00', '2 - 00');
+insert into t1 values ('1 - 01', '2 - 01');
+insert into t1 values ('1 - 02', '2 - 02');
+insert into t2 values ('1 - 01', '2 - 01');
+insert into t2 values ('1 - 01', '2 - 01');
+insert into t2 values ('1 - 02', '2 - 02');
+insert into t2 values ('1 - 02', '2 - 02');
+insert into t2 values ('1 - 03', '2 - 03');
+insert into t3 values ('1 - 01', '2 - 01');
+insert into t3 values ('1 - 02', '2 - 02');
+insert into t3 values ('1 - 03', '2 - 03');
+insert into t3 values ('1 - 04', '2 - 04');
+create table t1i (a1 char(8), a2 char(8));
+create table t2i (b1 char(8), b2 char(8));
+create table t3i (c1 char(8), c2 char(8));
+create index it1i1 on t1i (a1);
+create index it1i2 on t1i (a2);
+create index it1i3 on t1i (a1, a2);
+create index it2i1 on t2i (b1);
+create index it2i2 on t2i (b2);
+create index it2i3 on t2i (b1, b2);
+create index it3i1 on t3i (c1);
+create index it3i2 on t3i (c2);
+create index it3i3 on t3i (c1, c2);
+insert into t1i select * from t1;
+insert into t2i select * from t2;
+insert into t3i select * from t3;
+set @@optimizer_switch='materialization=on,in_to_exists=off,firstmatch=off';
+/******************************************************************************
+* Simple tests.
+******************************************************************************/
+# non-indexed nullable fields
+explain extended
+select * from t1 where a1 in (select b1 from t2 where b1 > '0');
+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	<subquery2>	eq_ref	distinct_key	distinct_key	9	func	1	100.00	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`b1` > '0'))
+select * from t1 where a1 in (select b1 from t2 where b1 > '0');
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
+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	<subquery2>	eq_ref	distinct_key	distinct_key	9	test.t1.a1	1	100.00	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using temporary
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from  <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`) join `test`.`t1` where (`<subquery2>`.`b1` = `test`.`t1`.`a1`)
+select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	test.t1.a1,test.t1.a2	1	100.00	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using temporary
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from  <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`,`test`.`t2`.`b2`) join `test`.`t1` where ((`<subquery2>`.`b2` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
+select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	test.t1.a1,test.t1.a2	1	100.00	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using temporary
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from  <materialize> (select `test`.`t2`.`b1`,min(`test`.`t2`.`b2`) from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`) join `test`.`t1` where ((`<subquery2>`.`min(b2)` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1i where a1 in (select b1 from t2i where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2i	index	it2i1,it2i3	it2i1	#	NULL	5	40.00	Using where; Using index; LooseScan
+1	PRIMARY	t1i	ref	_it1_idx	_it1_idx	#	_ref_	1	100.00	
+Warnings:
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0'))
+select * from t1i where a1 in (select b1 from t2i where b1 > '0');
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	#	NULL	#	3	100.00	#
+1	PRIMARY	t1i	ref	it1i1,it1i3	#	9	#	1	100.00	#
+2	SUBQUERY	t2i	range	it2i1,it2i3	#	9	#	3	100.00	#
+Warnings:
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from  <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where (`test`.`t1i`.`a1` = `<subquery2>`.`b1`)
+select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2i	index	it2i1,it2i2,it2i3	it2i3	#	NULL	5	40.00	Using where; Using index; LooseScan
+1	PRIMARY	t1i	ref	_it1_idx	_it1_idx	#	_ref_	1	100.00	
+Warnings:
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a2` = `test`.`t2i`.`b2`) and (`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0'))
+select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1i	index	it1i1,it1i2,it1i3	#	#	#	3	100.00	#
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	#	#	#	1	100.00	#
+2	SUBQUERY	t2i	range	it2i1,it2i3	#	#	#	3	100.00	#
+Warnings:
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from  <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`,`test`.`t2i`.`b2`) join `test`.`t1i` where ((`<subquery2>`.`b2` = `test`.`t1i`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1i`.`a1`))
+select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1i	index	it1i1,it1i2,it1i3	#	#	#	3	100.00	#
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	#	#	#	1	100.00	#
+2	SUBQUERY	t2i	range	it2i1,it2i3	#	#	#	3	100.00	#
+Warnings:
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from  <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where ((`<subquery2>`.`min(b2)` = `test`.`t1i`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1i`.`a1`))
+select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	test.t1.a1,test.t1.a2	1	100.00	
+2	SUBQUERY	t2i	range	NULL	it2i3	9	NULL	3	100.00	Using index for group-by
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from  <materialize> (select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1`) join `test`.`t1` where ((`<subquery2>`.`max(b2)` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
+select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+prepare st1 from "explain select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
+execute st1;
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	test.t1.a1,test.t1.a2	1	
+2	SUBQUERY	t2i	range	NULL	it2i3	9	NULL	3	Using index for group-by
+execute st1;
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	test.t1.a1,test.t1.a2	1	
+2	SUBQUERY	t2i	range	NULL	it2i3	9	NULL	3	Using index for group-by
+prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
+execute st2;
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+execute st2;
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	test.t1.a1,test.t1.a2	1	100.00	
+2	SUBQUERY	t2i	range	it2i1,it2i3	it2i3	18	NULL	3	100.00	Using where; Using index for group-by
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from  <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1` where ((`<subquery2>`.`min(b2)` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2i limit 1,1);
+ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='default,semijoin=off';
+prepare st1 from
+"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
+set @@optimizer_switch='default,materialization=off';
+execute st1;
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+set @@optimizer_switch='default,semijoin=off';
+execute st1;
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+set @@optimizer_switch='default,materialization=off';
+prepare st1 from
+"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
+set @@optimizer_switch='default,semijoin=off';
+execute st1;
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+set @@optimizer_switch='default,materialization=off';
+execute st1;
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+set @@optimizer_switch=@save_optimizer_switch;
+explain extended
+select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	test.t1.a1,test.t1.a2	1	100.00	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from  <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` order by `test`.`t2`.`b1`,`test`.`t2`.`b2`) join `test`.`t1` where ((`<subquery2>`.`b2` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
+select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1i	index	it1i1,it1i2,it1i3	it1i3	18	NULL	3	100.00	Using where; Using index
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	18	test.t1i.a1,test.t1i.a2	1	100.00	
+2	SUBQUERY	t2i	index	NULL	it2i3	18	NULL	5	100.00	Using index
+Warnings:
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from  <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` order by `test`.`t2i`.`b1`,`test`.`t2i`.`b2`) join `test`.`t1i` where ((`<subquery2>`.`b2` = `test`.`t1i`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1i`.`a1`))
+select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+/******************************************************************************
+* Views, UNIONs, several levels of nesting.
+******************************************************************************/
+# materialize the result of subquery over temp-table view
+create algorithm=merge view v1 as
+select b1, c2 from t2, t3 where b2 > c2;
+create algorithm=merge view v2 as
+select b1, c2 from t2, t3 group by b2, c2;
+Warnings:
+Warning	1354	View merge algorithm can't be used here for now (assumed undefined algorithm)
+create algorithm=temptable view v1m as
+select b1, c2 from t2, t3 where b2 > c2;
+create algorithm=temptable view v2m as
+select b1, c2 from t2, t3 group by b2, c2;
+select * from v1 where (c2, b1) in (select c2, b1 from v2 where b1 is not null);
+b1	c2
+1 - 02	2 - 01
+1 - 02	2 - 01
+1 - 03	2 - 01
+1 - 03	2 - 02
+select * from v1 where (c2, b1) in (select distinct c2, b1 from v2 where b1 is not null);
+b1	c2
+1 - 02	2 - 01
+1 - 02	2 - 01
+1 - 03	2 - 01
+1 - 03	2 - 02
+select * from v1m where (c2, b1) in (select c2, b1 from v2m where b1 is not null);
+b1	c2
+1 - 02	2 - 01
+1 - 02	2 - 01
+1 - 03	2 - 01
+1 - 03	2 - 02
+select * from v1m where (c2, b1) in (select distinct c2, b1 from v2m where b1 is not null);
+b1	c2
+1 - 02	2 - 01
+1 - 02	2 - 01
+1 - 03	2 - 01
+1 - 03	2 - 02
+drop view v1, v2, v1m, v2m;
+explain extended
+select * from t1
+where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
+(a1, a2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	func,func	1	100.00	
+1	PRIMARY	<subquery3>	eq_ref	distinct_key	distinct_key	18	func,func	1	100.00	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
+3	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+3	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	it2i3	18	NULL	5	80.00	Using where; Using index; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3`) where ((`test`.`t2i`.`b2` = `test`.`t3`.`c2`) and (`test`.`t2i`.`b1` = `test`.`t3`.`c1`) and (`test`.`t2`.`b1` > '0') and (`test`.`t3`.`c2` > '0'))
+select * from t1
+where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
+(a1, a2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1i
+where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
+(a1, a2) in (select c1, c2 from t3i
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1i	index	it1i1,it1i2,it1i3	#	#	#	3	100.00	#
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	#	#	#	1	100.00	#
+1	PRIMARY	<subquery3>	eq_ref	distinct_key	#	#	#	1	100.00	#
+2	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	#	#	#	5	100.00	#
+3	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	#	#	#	5	100.00	#
+3	SUBQUERY	t3i	index	it3i1,it3i2,it3i3	#	#	#	4	75.00	#
+Warnings:
+Note	1003	select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) semi join (`test`.`t2i` join `test`.`t3i`) where ((`test`.`t3i`.`c2` = `test`.`t2i`.`b2`) and (`test`.`t3i`.`c1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0') and (`test`.`t2i`.`b2` > '0'))
+select * from t1i
+where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
+(a1, a2) in (select c1, c2 from t3i
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+where b2 in (select c2 from t3 where c2 LIKE '%02') or
+b2 in (select c2 from t3 where c2 LIKE '%03')) and
+(a1, a2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+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	<subquery2>	eq_ref	distinct_key	distinct_key	18	func,func	1	100.00	
+1	PRIMARY	<subquery5>	eq_ref	distinct_key	distinct_key	18	func,func	1	100.00	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
+5	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+5	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	it2i3	18	NULL	5	80.00	Using where; Using index; Using join buffer (flat, BNL join)
+4	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+3	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3`) where ((`test`.`t2i`.`b2` = `test`.`t3`.`c2`) and (`test`.`t2i`.`b1` = `test`.`t3`.`c1`) and (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery3>`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) and (`test`.`t3`.`c2` > '0'))
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+where b2 in (select c2 from t3 where c2 LIKE '%02') or
+b2 in (select c2 from t3 where c2 LIKE '%03')) and
+(a1, a2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+a1	a2
+1 - 02	2 - 02
+explain extended
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+where b2 in (select c2 from t3 t3a where c1 = a1) or
+b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
+(a1, a2) in (select c1, c2 from t3 t3c
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+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	Start temporary
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+1	PRIMARY	<subquery5>	eq_ref	distinct_key	distinct_key	18	func,func	1	100.00	
+5	SUBQUERY	t3c	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+5	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	it2i3	18	NULL	5	80.00	Using where; Using index; Using join buffer (flat, BNL join)
+4	SUBQUERY	t3b	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+3	DEPENDENT SUBQUERY	t3a	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+Warnings:
+Note	1276	Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3` `t3c`) where ((`test`.`t2`.`b2` = `test`.`t1`.`a2`) and (`test`.`t2i`.`b2` = `test`.`t3c`.`c2`) and (`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t2i`.`b1` = `test`.`t3c`.`c1`) and (<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) and (`test`.`t3c`.`c2` > '0'))
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+where b2 in (select c2 from t3 t3a where c1 = a1) or
+b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
+(a1, a2) in (select c1, c2 from t3 t3c
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+(select * from t1
+where (a1, a2) in (select b1, b2 from t2
+where b2 in (select c2 from t3 where c2 LIKE '%02') or
+b2 in (select c2 from t3 where c2 LIKE '%03')
+group by b1, b2) and
+(a1, a2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
+UNION
+(select * from t1i
+where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
+(a1, a2) in (select c1, c2 from t3i
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	#	#	#	5	0.00	#
+1	PRIMARY	t3	ALL	NULL	#	#	#	4	100.00	#
+1	PRIMARY	t1	ALL	NULL	#	#	#	3	100.00	#
+1	PRIMARY	t2i	ref	it2i1,it2i2,it2i3	#	#	#	2	100.00	#
+2	SUBQUERY	t2	ALL	NULL	#	#	#	5	100.00	#
+4	SUBQUERY	t3	ALL	NULL	#	#	#	4	100.00	#
+3	SUBQUERY	t3	ALL	NULL	#	#	#	4	100.00	#
+7	UNION	t1i	index	it1i1,it1i2,it1i3	#	#	#	3	100.00	#
+7	UNION	<subquery8>	eq_ref	distinct_key	#	#	#	1	100.00	#
+7	UNION	<subquery9>	eq_ref	distinct_key	#	#	#	1	100.00	#
+8	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	#	#	#	5	100.00	#
+9	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	#	#	#	5	100.00	#
+9	SUBQUERY	t3i	index	it3i1,it3i2,it3i3	#	#	#	4	75.00	#
+NULL	UNION RESULT	<union1,7>	ALL	NULL	#	#	#	NULL	NULL	#
+Warnings:
+Note	1003	(select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from  <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery3>`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) group by `test`.`t2`.`b1`,`test`.`t2`.`b2`) semi join (`test`.`t2i` join `test`.`t3`) join `test`.`t1` where ((`test`.`t3`.`c2` = `<subquery2>`.`b2`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`) and (`test`.`t2i`.`b2` = `<subquery2>`.`b2`) and (`test`.`t3`.`c1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t2i`.`b1` = `<subquery2>`.`b1`) and (`<subquery2>`.`b2` > '0'))) union (select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) semi join (`test`.`t2i` join `test`.`t3i`) where ((`test`.`t3i`.`c2` = `test`.`t2i`.`b2`) and (`test`.`t3i`.`c1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0') and (`test`.`t2i`.`b2` > '0')))
+(select * from t1
+where (a1, a2) in (select b1, b2 from t2
+where b2 in (select c2 from t3 where c2 LIKE '%02') or
+b2 in (select c2 from t3 where c2 LIKE '%03')
+group by b1, b2) and
+(a1, a2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
+UNION
+(select * from t1i
+where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
+(a1, a2) in (select c1, c2 from t3i
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
+a1	a2
+1 - 02	2 - 02
+1 - 01	2 - 01
+explain extended
+select * from t1
+where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
+(a1, a2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+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	<subquery4>	eq_ref	distinct_key	distinct_key	18	func,func	1	100.00	
+4	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+4	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	it2i3	18	NULL	5	80.00	Using where; Using index; Using join buffer (flat, BNL join)
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+3	DEPENDENT UNION	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2i` join `test`.`t3`) where ((`test`.`t2i`.`b2` = `test`.`t3`.`c2`) and (`test`.`t2i`.`b1` = `test`.`t3`.`c1`) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and (`test`.`t3`.`c2` > '0'))
+select * from t1
+where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
+(a1, a2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+a1	a2
+1 - 01	2 - 01
+1 - 02	2 - 02
+explain extended
+select * from t1, t3
+where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
+(c1, c2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
+a1 = c1;
+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	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<subquery4>	eq_ref	distinct_key	distinct_key	18	func,func	1	100.00	
+4	SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+4	SUBQUERY	t2i	index	it2i1,it2i2,it2i3	it2i3	18	NULL	5	80.00	Using where; Using index; Using join buffer (flat, BNL join)
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+3	DEPENDENT UNION	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2`,`test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t1` semi join (`test`.`t2i` join `test`.`t3`) join `test`.`t3` where ((`test`.`t2i`.`b2` = `test`.`t3`.`c2`) and (`test`.`t3`.`c1` = `test`.`t1`.`a1`) and (`test`.`t2i`.`b1` = `test`.`t3`.`c1`) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and (`test`.`t3`.`c2` > '0'))
+select * from t1, t3
+where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
+(c1, c2) in (select c1, c2 from t3
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
+a1 = c1;
+a1	a2	c1	c2
+1 - 01	2 - 01	1 - 01	2 - 01
+1 - 02	2 - 02	1 - 02	2 - 02
+/******************************************************************************
+* Negative tests, where materialization should not be applied.
+******************************************************************************/
+# UNION in a subquery
+explain extended
+select * from t3
+where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+3	DEPENDENT UNION	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
+Warnings:
+Note	1003	select `test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`>(<in_optimizer>(`test`.`t3`.`c1`,<exists>(select `test`.`t1`.`a1` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t3`.`c1`) = `test`.`t1`.`a1`)) union select `test`.`t2`.`b1` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t3`.`c1`) = `test`.`t2`.`b1`)))))
+select * from t3
+where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
+c1	c2
+1 - 01	2 - 01
+1 - 02	2 - 02
+1 - 03	2 - 03
+explain extended
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+where b2 in (select c2 from t3 t3a where c1 = a1) or
+b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
+(a1, a2) in (select c1, c2 from t3 t3c
+where (c1, c2) in (select b1, b2 from t2i where b2 > '0' or b2 = a2));
+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; Start temporary
+1	PRIMARY	t2i	ref	it2i1,it2i2,it2i3	it2i3	18	test.t1.a1,test.t1.a2	2	100.00	Using index
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	t3c	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+4	SUBQUERY	t3b	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+3	DEPENDENT SUBQUERY	t3a	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
+Warnings:
+Note	1276	Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
+Note	1276	Field or reference 'test.t1.a2' of SELECT #6 was resolved in SELECT #1
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3` `t3c`) where ((`test`.`t2i`.`b2` = `test`.`t1`.`a2`) and (`test`.`t2`.`b2` = `test`.`t1`.`a2`) and (`test`.`t3c`.`c2` = `test`.`t1`.`a2`) and (`test`.`t2i`.`b1` = `test`.`t1`.`a1`) and (`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t3c`.`c1` = `test`.`t1`.`a1`) and (<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))))
+explain extended
+select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
+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
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull('1 - 01')) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull('2 - 01')) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01')))))
+select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
+a1	a2
+1 - 01	2 - 01
+explain extended
+select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
+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
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull('1 - 01')) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull('2 - 01')) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01')))))
+select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
+a1	a2
+1 - 01	2 - 01
+/******************************************************************************
+* Subqueries in other uncovered clauses.
+******************************************************************************/
+/* SELECT clause */
+select ((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL from t1;
+((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL
+0
+0
+0
+/* GROUP BY clause */
+create table columns (col int key);
+insert into columns values (1), (2);
+explain extended
+select * from t1 group by (select col from columns limit 1);
+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	
+2	SUBQUERY	columns	index	NULL	PRIMARY	4	NULL	2	100.00	Using index
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by (select `test`.`columns`.`col` from `test`.`columns` limit 1)
+select * from t1 group by (select col from columns limit 1);
+a1	a2
+1 - 00	2 - 00
+explain extended
+select * from t1 group by (a1 in (select col from columns));
+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 temporary; Using filesort
+2	DEPENDENT SUBQUERY	columns	unique_subquery	PRIMARY	PRIMARY	4	func	1	100.00	Using index; Using where; Full scan on NULL key
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`a1`) in columns on PRIMARY where trigcond((<cache>(`test`.`t1`.`a1`) = `test`.`columns`.`col`))))))
+select * from t1 group by (a1 in (select col from columns));
+a1	a2
+1 - 00	2 - 00
+/* ORDER BY clause */
+explain extended
+select * from t1 order by (select col from columns limit 1);
+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	
+2	SUBQUERY	columns	index	NULL	PRIMARY	4	NULL	2	100.00	Using index
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` order by (select `test`.`columns`.`col` from `test`.`columns` limit 1)
+select * from t1 order by (select col from columns limit 1);
+a1	a2
+1 - 00	2 - 00
+1 - 01	2 - 01
+1 - 02	2 - 02
+/******************************************************************************
+* Column types/sizes that affect materialization.
+******************************************************************************/
+/*
+Test that BLOBs are not materialized (except when arguments of some functions).
+*/
+# force materialization to be always considered
+set @prefix_len = 6;
+set @blob_len = 16;
+set @suffix_len = @blob_len - @prefix_len;
+create table t1_16 (a1 blob(16), a2 blob(16));
+create table t2_16 (b1 blob(16), b2 blob(16));
+create table t3_16 (c1 blob(16), c2 blob(16));
+insert into t1_16 values
+(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_16 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_16 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_16 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_16 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_16 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_16 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t3_16 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t3_16 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_16 values
+(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select b1 from t2_16 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Start temporary
+1	PRIMARY	t2_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` semi join (`test`.`t2_16`) where ((`test`.`t2_16`.`b1` = `test`.`t1_16`.`a1`) and (`test`.`t1_16`.`a1` > '0'))
+select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select b1 from t2_16 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Start temporary
+1	PRIMARY	t2_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` semi join (`test`.`t2_16`) where ((`test`.`t2_16`.`b2` = `test`.`t1_16`.`a2`) and (`test`.`t2_16`.`b1` = `test`.`t1_16`.`a1`) and (`test`.`t1_16`.`a1` > '0'))
+select left(a1,7), left(a2,7)
+from t1_16
+where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_16	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	20	func	1	100.00	Using where
+2	SUBQUERY	t2_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+Warnings:
+Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` semi join (`test`.`t2_16`) where ((`test`.`t2_16`.`b1` > '0') and (`test`.`t1_16`.`a1` = substr(`test`.`t2_16`.`b1`,1,16)))
+select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select group_concat(b1) from t2_16 group by b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+2	DEPENDENT SUBQUERY	t2_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
+Warnings:
+Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,<exists>(select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2` having (<cache>(`test`.`t1_16`.`a1`) = <ref_null_helper>(group_concat(`test`.`t2_16`.`b1` separator ','))))))
+select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select group_concat(b1) from t2_16 group by b2);
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+set @@group_concat_max_len = 256;
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select group_concat(b1) from t2_16 group by b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	261	test.t1_16.a1	1	100.00	Using where
+2	SUBQUERY	t2_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
+Warnings:
+Note	1003	select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from  <materialize> (select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2`) join `test`.`t1_16` where (`test`.`t1_16`.`a1` = `<subquery2>`.`group_concat(b1)`)
+select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select group_concat(b1) from t2_16 group by b2);
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended
+select * from t1
+where concat(a1,'x') IN
+(select left(a1,8) from t1_16
+where (a1, a2) IN
+(select t2_16.b1, t2_16.b2 from t2_16, t2
+where t2.b2 = substring(t2_16.b2,1,6) and
+t2.b1 IN (select c1 from t3 where c2 > '0')));
+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	Start temporary
+1	PRIMARY	t1_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	t2_16	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t3` join `test`.`t2_16` join `test`.`t2` join `test`.`t1_16`) where ((`test`.`t2_16`.`b2` = `test`.`t1_16`.`a2`) and (`test`.`t2_16`.`b1` = `test`.`t1_16`.`a1`) and (`test`.`t2`.`b1` = `test`.`t3`.`c1`) and (`test`.`t2`.`b2` = substr(`test`.`t1_16`.`a2`,1,6)) and (`test`.`t3`.`c2` > '0') and (concat(`test`.`t1`.`a1`,'x') = left(`test`.`t1_16`.`a1`,8)))
+drop table t1_16, t2_16, t3_16;
+set @blob_len = 512;
+set @suffix_len = @blob_len - @prefix_len;
+create table t1_512 (a1 blob(512), a2 blob(512));
+create table t2_512 (b1 blob(512), b2 blob(512));
+create table t3_512 (c1 blob(512), c2 blob(512));
+insert into t1_512 values
+(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_512 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_512 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_512 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_512 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_512 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_512 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t3_512 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t3_512 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_512 values
+(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select b1 from t2_512 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Start temporary
+1	PRIMARY	t2_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` semi join (`test`.`t2_512`) where ((`test`.`t2_512`.`b1` = `test`.`t1_512`.`a1`) and (`test`.`t1_512`.`a1` > '0'))
+select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select b1 from t2_512 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Start temporary
+1	PRIMARY	t2_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` semi join (`test`.`t2_512`) where ((`test`.`t2_512`.`b2` = `test`.`t1_512`.`a2`) and (`test`.`t2_512`.`b1` = `test`.`t1_512`.`a1`) and (`test`.`t1_512`.`a1` > '0'))
+select left(a1,7), left(a2,7)
+from t1_512
+where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_512	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	517	func	1	100.00	Using where
+2	SUBQUERY	t2_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+Warnings:
+Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` semi join (`test`.`t2_512`) where ((`test`.`t2_512`.`b1` > '0') and (`test`.`t1_512`.`a1` = substr(`test`.`t2_512`.`b1`,1,512)))
+select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select group_concat(b1) from t2_512 group by b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	261	test.t1_512.a1	1	100.00	Using where
+2	SUBQUERY	t2_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
+Warnings:
+Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from  <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2`) join `test`.`t1_512` where (`test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`)
+select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select group_concat(b1) from t2_512 group by b2);
+left(a1,7)	left(a2,7)
+set @@group_concat_max_len = 256;
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select group_concat(b1) from t2_512 group by b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	261	test.t1_512.a1	1	100.00	Using where
+2	SUBQUERY	t2_512	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
+Warnings:
+Note	1003	select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from  <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2`) join `test`.`t1_512` where (`test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`)
+select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select group_concat(b1) from t2_512 group by b2);
+left(a1,7)	left(a2,7)
+drop table t1_512, t2_512, t3_512;
+set @blob_len = 1024;
+set @suffix_len = @blob_len - @prefix_len;
+create table t1_1024 (a1 blob(1024), a2 blob(1024));
+create table t2_1024 (b1 blob(1024), b2 blob(1024));
+create table t3_1024 (c1 blob(1024), c2 blob(1024));
+insert into t1_1024 values
+(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_1024 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_1024 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_1024 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t3_1024 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t3_1024 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_1024 values
+(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select b1 from t2_1024 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Start temporary
+1	PRIMARY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` semi join (`test`.`t2_1024`) where ((`test`.`t2_1024`.`b1` = `test`.`t1_1024`.`a1`) and (`test`.`t1_1024`.`a1` > '0'))
+select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select b1 from t2_1024 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Start temporary
+1	PRIMARY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` semi join (`test`.`t2_1024`) where ((`test`.`t2_1024`.`b2` = `test`.`t1_1024`.`a2`) and (`test`.`t2_1024`.`b1` = `test`.`t1_1024`.`a1`) and (`test`.`t1_1024`.`a1` > '0'))
+select left(a1,7), left(a2,7)
+from t1_1024
+where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	<subquery2>	eq_ref	NULL	distinct_key	15	func,func	1	100.00	Using where
+2	SUBQUERY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+Warnings:
+Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` semi join (`test`.`t2_1024`) where ((`test`.`t2_1024`.`b1` > '0') and (`test`.`t1_1024`.`a1` = substr(`test`.`t2_1024`.`b1`,1,1024)))
+select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');
+left(a1,7)	left(a2,7)
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select group_concat(b1) from t2_1024 group by b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	261	test.t1_1024.a1	1	100.00	Using where
+2	SUBQUERY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
+Warnings:
+Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from  <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2`) join `test`.`t1_1024` where (`test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`)
+select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select group_concat(b1) from t2_1024 group by b2);
+left(a1,7)	left(a2,7)
+set @@group_concat_max_len = 256;
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select group_concat(b1) from t2_1024 group by b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	261	test.t1_1024.a1	1	100.00	Using where
+2	SUBQUERY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
+Warnings:
+Note	1003	select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from  <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2`) join `test`.`t1_1024` where (`test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`)
+select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select group_concat(b1) from t2_1024 group by b2);
+left(a1,7)	left(a2,7)
+drop table t1_1024, t2_1024, t3_1024;
+set @blob_len = 1025;
+set @suffix_len = @blob_len - @prefix_len;
+create table t1_1025 (a1 blob(1025), a2 blob(1025));
+create table t2_1025 (b1 blob(1025), b2 blob(1025));
+create table t3_1025 (c1 blob(1025), c2 blob(1025));
+insert into t1_1025 values
+(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_1025 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_1025 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1025 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_1025 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1025 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_1025 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t3_1025 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t3_1025 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_1025 values
+(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select b1 from t2_1025 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Start temporary
+1	PRIMARY	t2_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` semi join (`test`.`t2_1025`) where ((`test`.`t2_1025`.`b1` = `test`.`t1_1025`.`a1`) and (`test`.`t1_1025`.`a1` > '0'))
+select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select b1 from t2_1025 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Start temporary
+1	PRIMARY	t2_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` semi join (`test`.`t2_1025`) where ((`test`.`t2_1025`.`b2` = `test`.`t1_1025`.`a2`) and (`test`.`t2_1025`.`b1` = `test`.`t1_1025`.`a1`) and (`test`.`t1_1025`.`a1` > '0'))
+select left(a1,7), left(a2,7)
+from t1_1025
+where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+1 - 02x	2 - 02x
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	<subquery2>	eq_ref	NULL	distinct_key	15	func,func	1	100.00	Using where
+2	SUBQUERY	t2_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+Warnings:
+Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` semi join (`test`.`t2_1025`) where ((`test`.`t2_1025`.`b1` > '0') and (`test`.`t1_1025`.`a1` = substr(`test`.`t2_1025`.`b1`,1,1025)))
+select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');
+left(a1,7)	left(a2,7)
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select group_concat(b1) from t2_1025 group by b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	261	test.t1_1025.a1	1	100.00	Using where
+2	SUBQUERY	t2_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
+Warnings:
+Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from  <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2`) join `test`.`t1_1025` where (`test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`)
+select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select group_concat(b1) from t2_1025 group by b2);
+left(a1,7)	left(a2,7)
+set @@group_concat_max_len = 256;
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select group_concat(b1) from t2_1025 group by b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	261	test.t1_1025.a1	1	100.00	Using where
+2	SUBQUERY	t2_1025	ALL	NULL	NULL	NULL	NULL	3	100.00	Using filesort
+Warnings:
+Note	1003	select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from  <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2`) join `test`.`t1_1025` where (`test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`)
+select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select group_concat(b1) from t2_1025 group by b2);
+left(a1,7)	left(a2,7)
+drop table t1_1025, t2_1025, t3_1025;
+create table t1bit (a1 bit(3), a2 bit(3));
+create table t2bit (b1 bit(3), b2 bit(3));
+insert into t1bit values (b'000', b'100');
+insert into t1bit values (b'001', b'101');
+insert into t1bit values (b'010', b'110');
+insert into t2bit values (b'001', b'101');
+insert into t2bit values (b'010', b'110');
+insert into t2bit values (b'110', b'111');
+explain extended select bin(a1), bin(a2)
+from t1bit
+where (a1, a2) in (select b1, b2 from t2bit);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1bit	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	10	func,func	1	100.00	
+2	SUBQUERY	t2bit	ALL	NULL	NULL	NULL	NULL	3	100.00	
+Warnings:
+Note	1003	select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` semi join (`test`.`t2bit`) where 1
+select bin(a1), bin(a2)
+from t1bit
+where (a1, a2) in (select b1, b2 from t2bit);
+bin(a1)	bin(a2)
+1	101
+10	110
+drop table t1bit, t2bit;
+create table t1bb (a1 bit(3), a2 blob(3));
+create table t2bb (b1 bit(3), b2 blob(3));
+insert into t1bb values (b'000', '100');
+insert into t1bb values (b'001', '101');
+insert into t1bb values (b'010', '110');
+insert into t2bb values (b'001', '101');
+insert into t2bb values (b'010', '110');
+insert into t2bb values (b'110', '111');
+explain extended select bin(a1), a2
+from t1bb
+where (a1, a2) in (select b1, b2 from t2bb);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1bb	ALL	NULL	NULL	NULL	NULL	3	100.00	Start temporary
+1	PRIMARY	t2bb	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; End temporary; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	select conv(`test`.`t1bb`.`a1`,10,2) AS `bin(a1)`,`test`.`t1bb`.`a2` AS `a2` from `test`.`t1bb` semi join (`test`.`t2bb`) where ((`test`.`t2bb`.`b2` = `test`.`t1bb`.`a2`) and (`test`.`t2bb`.`b1` = `test`.`t1bb`.`a1`))
+select bin(a1), a2
+from t1bb
+where (a1, a2) in (select b1, b2 from t2bb);
+bin(a1)	a2
+1	101
+10	110
+drop table t1bb, t2bb;
+drop table t1, t2, t3, t1i, t2i, t3i, columns;
+/******************************************************************************
+* Test the cache of the left operand of IN.
+******************************************************************************/
+# Test that default values of Cached_item are not used for comparison
+create table t1 (s1 int);
+create table t2 (s2 int);
+insert into t1 values (5),(1),(0);
+insert into t2 values (0), (1);
+select s2 from t2 where s2 in (select s1 from t1);
+s2
+0
+1
+drop table t1, t2;
+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 (1,20);
+insert into t1 values (2,10);
+insert into t1 values (2,20);
+insert into t1 values (2,30);
+insert into t1 values (3,20);
+insert into t1 values (4,40);
+insert into t2 values (2,10);
+insert into t2 values (2,20);
+insert into t2 values (2,40);
+insert into t2 values (3,20);
+insert into t2 values (4,10);
+insert into t2 values (5,10);
+insert into t3 values (10);
+insert into t3 values (10);
+insert into t3 values (20);
+insert into t3 values (30);
+explain extended
+select a from t1 where a in (select c from t2 where d >= 20);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	6	100.00	
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where; Using join buffer (flat, BNL join)
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and (`test`.`t2`.`d` >= 20))
+select a from t1 where a in (select c from t2 where d >= 20);
+a
+2
+2
+2
+3
+create index it1a on t1(a);
+explain extended
+select a from t1 where a in (select c from t2 where d >= 20);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	6	100.00	
+1	PRIMARY	t1	ref	it1a	it1a	4	test.t2.c	2	100.00	Using index
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	6	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and (`test`.`t2`.`d` >= 20))
+select a from t1 where a in (select c from t2 where d >= 20);
+a
+2
+2
+2
+3
+insert into t2 values (1,10);
+explain extended
+select a from t1 where a in (select c from t2 where d >= 20);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	index	it1a	it1a	4	NULL	7	100.00	Using index
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	4	func	1	100.00	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`d` >= 20))
+select a from t1 where a in (select c from t2 where d >= 20);
+a
+2
+2
+2
+3
+explain extended
+select a from t1 group by a having a in (select c from t2 where d >= 20);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	index	NULL	it1a	4	NULL	7	100.00	Using index
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
+select a from t1 group by a having a in (select c from t2 where d >= 20);
+a
+2
+3
+create index iab on t1(a, b);
+explain extended
+select a from t1 group by a having a in (select c from t2 where d >= 20);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	index	NULL	it1a	4	NULL	7	100.00	Using index
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
+select a from t1 group by a having a in (select c from t2 where d >= 20);
+a
+2
+3
+explain extended
+select a from t1 group by a
+having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	index	NULL	iab	8	NULL	7	100.00	Using index
+2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
+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` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`,max(`test`.`t1`.`b`)>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select `test`.`t2`.`c` from `test`.`t2` where (<nop>(<expr_cache><`test`.`t2`.`d`,max(`test`.`t1`.`b`)>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where (max(`test`.`t1`.`b`) = `test`.`t3`.`e`) having (<cache>(`test`.`t2`.`d`) >= <ref_null_helper>(`test`.`t3`.`e`)))))) and (<cache>(`test`.`t1`.`a`) = `test`.`t2`.`c`)))))
+select a from t1 group by a
+having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
+a
+2
+3
+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	7	100.00	Start temporary
+1	PRIMARY	t1	ref	it1a,iab	iab	4	test.t2.c	1	100.00	Using where; Using index; End temporary
+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>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` 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
+2
+3
+1
+drop table t1, t2, t3;
+create table t2 (a int, b int, key(a), key(b));
+insert into t2 values (3,3),(3,3),(3,3);
+select 1 from t2 where  
+t2.a > 1 
+or 
+t2.a = 3 and not t2.a not in (select t2.b from t2);
+1
+1
+1
+1
+drop table t2;
+create table t1 (a1 int key);
+create table t2 (b1 int);
+insert into t1 values (5);
+explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	
+1	PRIMARY	<subquery2>	const	distinct_key	distinct_key	5	const	1	
+2	SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
+select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
+min(a1)
+NULL
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='default,materialization=off';
+explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+2	DEPENDENT SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
+select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
+min(a1)
+set @@optimizer_switch='default,semijoin=off';
+explain select min(a1) from t1 where 7 in (select b1 from t2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+select min(a1) from t1 where 7 in (select b1 from t2);
+min(a1)
+set @@optimizer_switch='default,materialization=off';
+# with MariaDB and MWL#90, this particular case is solved:
+explain select min(a1) from t1 where 7 in (select b1 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
+select min(a1) from t1 where 7 in (select b1 from t2);
+min(a1)
+NULL
+# but when we go around MWL#90 code, the problem still shows up:
+explain select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
+min(a1)
+set @@optimizer_switch= @save_optimizer_switch;
+drop table t1,t2;
+create table t1 (a char(2), b varchar(10));
+insert into t1 values ('a',  'aaa');
+insert into t1 values ('aa', 'aaaa');
+explain select a,b from t1 where b in (select a from t1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	3	func	1	Using where
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+select a,b from t1 where b in (select a from t1);
+a	b
+prepare st1 from "select a,b from t1 where b in (select a from t1)";
+execute st1;
+a	b
+execute st1;
+a	b
+drop table t1;
+CREATE TABLE t1 (f1 INT, f2 DECIMAL(5,3)) ENGINE=MyISAM;
+INSERT INTO t1 (f1, f2) VALUES (1, 1.789);
+INSERT INTO t1 (f1, f2) VALUES (13, 1.454);
+INSERT INTO t1 (f1, f2) VALUES (10, 1.668);
+CREATE TABLE t2 LIKE t1;
+INSERT INTO t2 VALUES (1, 1.789);
+INSERT INTO t2 VALUES (13, 1.454);
+set @save_optimizer_switch=@@optimizer_switch;
+SET @@optimizer_switch='default,semijoin=on,materialization=on';
+EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	2	
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	Using where; Using join buffer (flat, BNL join)
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
+COUNT(*)
+2
+set @@optimizer_switch= @save_optimizer_switch;
+DROP TABLE t1, t2;
+CREATE TABLE t1 (
+pk int,
+a varchar(1),
+b varchar(4),
+c varchar(4),
+d varchar(4),
+PRIMARY KEY (pk)
+);
+INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff');
+CREATE TABLE t2 LIKE t1;
+INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff');
+set @save_optimizer_switch=@@optimizer_switch;
+SET @@optimizer_switch='default,semijoin=on,materialization=on';
+EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	func	1	
+2	SUBQUERY	t2	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Rowid-ordered scan
+SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
+pk
+2
+SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0);
+pk
+2
+DROP TABLE t1, t2;
+set optimizer_switch=@save_optimizer_switch;
+#
+# BUG#50019: Wrong result for IN-subquery with materialization
+#
+create table t1(i int);
+insert into t1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+create table t2(i int);
+insert into t2 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+create table t3(i int);
+insert into t3 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
+i
+1
+2
+3
+4
+set @save_optimizer_switch=@@optimizer_switch;
+set session optimizer_switch='materialization=off,in_to_exists=on';
+select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
+i
+4
+3
+2
+1
+set session optimizer_switch=@save_optimizer_switch;
+drop table t1, t2, t3;
+create table t0 (a int);
+insert into t0 values (0),(1),(2);
+create table t1 (a int);
+insert into t1 values (0),(1),(2);
+explain select a, a in (select a from t1) from t0;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t0	ALL	NULL	NULL	NULL	NULL	3	
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	
+select a, a in (select a from t1) from t0;
+a	a in (select a from t1)
+0	1
+1	1
+2	1
+prepare s from 'select a, a in (select a from t1) from t0';
+execute s;
+a	a in (select a from t1)
+0	1
+1	1
+2	1
+update t1 set a=123;
+execute s;
+a	a in (select a from t1)
+0	0
+1	0
+2	0
+drop table t0, t1;
+set optimizer_switch='firstmatch=on';
+#
+# MWL#90, review feedback: check what happens when the subquery
+#   looks like candidate for MWL#90 checking at the first glance
+#   but then subselect_hash_sj_engine::init_permanent() discovers
+#   that it's not possible to perform duplicate removal for the 
+#   selected datatypes, and so materialization isn't applicable after
+#   all.
+#
+set @blob_len = 1024;
+set @suffix_len = @blob_len - @prefix_len;
+create table t1_1024 (a1 blob(1024), a2 blob(1024));
+create table t2_1024 (b1 blob(1024), b2 blob(1024));
+insert into t1_1024 values
+(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_1024 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_1024 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1024 values
+(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+explain select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1_1024	ALL	NULL	NULL	NULL	NULL	3	Using where
+2	DEPENDENT SUBQUERY	t2_1024	ALL	NULL	NULL	NULL	NULL	3	Using where
+select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
+left(a1,7)	left(a2,7)
+1 - 01x	2 - 01x
+drop table t1_1024, t2_1024;
diff --git a/mysql-test/r/subselect_sj_nonmerged.result b/mysql-test/r/subselect_sj_nonmerged.result
new file mode 100644
index 00000000000..9919ebfd939
--- /dev/null
+++ b/mysql-test/r/subselect_sj_nonmerged.result
@@ -0,0 +1,103 @@
+drop table if exists t0, t1, t2, t3, t4;
+set @save_optimizer_switch=@@optimizer_switch;
+set optimizer_switch='materialization=on';
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1 as select * from t0;
+# The following should use full scan on <subquery2> and it must scan 1 row:
+explain select * from t0 where a in (select max(a) from t1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	1	
+1	PRIMARY	t0	ALL	NULL	NULL	NULL	NULL	10	Using where; Using join buffer (flat, BNL join)
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	10	
+select * from t0 where a in (select max(a) from t1);
+a
+9
+insert into t1 values (11);
+select * from t0 where a in (select max(a) from t1);
+a
+delete from t1 where a=11;
+insert into t0 values (NULL);
+select * from t0 where a in (select max(a) from t1);
+a
+9
+delete from t0 where a is NULL;
+delete from t1;
+select * from t0 where a in (select max(a) from t1);
+a
+insert into t0 values (NULL);
+select * from t0 where a in (select max(a) from t1);
+a
+delete from t0 where a is NULL;
+drop table t1;
+create table t1 (a int, b int);
+insert into t1 select a,a from t0;
+create table t2 as select * from t1 where a<5;
+create table t3 as select (A.a + 10*B.a) as a from t0 A, t0 B;
+alter table t3 add primary key(a);
+# The following should have do a full scan on <subquery2> and scan 5 rows 
+#   (despite that subquery's join output estimate is 50 rows)
+explain select * from t3 where a in (select max(t2.a) from t1, t2 group by t2.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	5	Using where
+1	PRIMARY	t3	eq_ref	PRIMARY	PRIMARY	8	<subquery2>.max(t2.a)	1	Using where; Using index
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	Using temporary
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	10	Using join buffer (flat, BNL join)
+# Compare to this which really will have 50 record combinations:
+explain select * from t3 where a in (select max(t2.a) from t1, t2 group by t2.b, t1.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	50	Using where
+1	PRIMARY	t3	eq_ref	PRIMARY	PRIMARY	8	<subquery2>.max(t2.a)	1	Using where; Using index
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	Using temporary
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	10	Using join buffer (flat, BNL join)
+# Outer joins also work:
+explain select * from t3 
+where a in (select max(t2.a) from t1 left join t2 on t1.a=t2.a group by t2.b, t1.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	50	Using where
+1	PRIMARY	t3	eq_ref	PRIMARY	PRIMARY	8	<subquery2>.max(t2.a)	1	Using where; Using index
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	10	Using temporary
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	Using where
+create table t4 (a int, b int, filler char(20), unique key(a,b));
+insert into t4 select A.a + 10*B.a, A.a + 10*B.a, 'filler' from t0 A, t0 B;
+explain select * from t0, t4 where 
+t4.b=t0.a and t4.a in (select max(t2.a) from t1, t2 group by t2.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t0	ALL	NULL	NULL	NULL	NULL	10	
+1	PRIMARY	t4	ALL	a	NULL	NULL	NULL	100	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	5	test.t4.a	1	
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	Using temporary
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	10	Using join buffer (flat, BNL join)
+insert into t4 select 100 + (B.a *100 + A.a), 100 + (B.a*100 + A.a), 'filler' from t4 A, t0 B;
+explain select * from t4 where 
+t4.a in (select max(t2.a) from t1, t2 group by t2.b) and 
+t4.b in (select max(t2.a) from t1, t2 group by t2.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<subquery2>	ALL	distinct_key	NULL	NULL	NULL	5	Using where
+1	PRIMARY	<subquery3>	ALL	distinct_key	NULL	NULL	NULL	5	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	t4	ref	a	a	10	<subquery2>.max(t2.a),<subquery3>.max(t2.a)	12	
+3	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	Using temporary
+3	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	10	Using join buffer (flat, BNL join)
+2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	5	Using temporary
+2	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	10	Using join buffer (flat, BNL join)
+drop table t1,t2,t3,t4;
+drop table t0;
+#
+# BUG#780359: Crash with get_fanout_with_deps in maria-5.3-mwl90
+#
+CREATE TABLE t1 (f1 int);
+INSERT INTO t1 VALUES (2),(2);
+CREATE TABLE t2 (f3 int);
+INSERT INTO t2 VALUES (2),(2);
+SELECT *
+FROM t1
+WHERE ( f1 ) IN (
+SELECT t2.f3
+FROM t2
+WHERE t2.f3 = 97
+AND t2.f3 = 50
+GROUP BY 1
+);
+f1
+DROP TABLE t1, t2;
+set optimizer_switch=@save_optimizer_switch;
diff --git a/mysql-test/suite/vcol/inc/vcol_view.inc b/mysql-test/suite/vcol/inc/vcol_view.inc
index 2bf413e2471..64149a7bb31 100644
--- a/mysql-test/suite/vcol/inc/vcol_view.inc
+++ b/mysql-test/suite/vcol/inc/vcol_view.inc
@@ -69,10 +69,14 @@ create table t1 (a int not null,
 insert into t1 (a) values (1), (2), (3), (4);
 create view v1 as select b+1 from t1 order by 1 desc limit 2;
 select * from v1;
+--echo MariaDB-5.3: the following EXPLAIN produces incorrect #rows for table t1.
+--echo MariaDB-5.3: this is expected to go away when FROM subquery optimizations are pushed
 explain select * from v1;
 drop view v1;
 create view v1 as select c+1 from t1 order by 1 desc limit 2;
 select * from v1;
+--echo MariaDB-5.3: the following EXPLAIN produces incorrect #rows for table t1.
+--echo MariaDB-5.3: this is expected to go away when FROM subquery optimizations are pushed
 explain select * from v1;
 drop view v1;
 drop table t1;
diff --git a/mysql-test/suite/vcol/r/vcol_view_innodb.result b/mysql-test/suite/vcol/r/vcol_view_innodb.result
index ae834722606..6db6f7414b1 100644
--- a/mysql-test/suite/vcol/r/vcol_view_innodb.result
+++ b/mysql-test/suite/vcol/r/vcol_view_innodb.result
@@ -103,6 +103,8 @@ select * from v1;
 b+1
 0
 -1
+MariaDB-5.3: the following EXPLAIN produces incorrect #rows for table t1.
+MariaDB-5.3: this is expected to go away when FROM subquery optimizations are pushed
 explain select * from v1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	
@@ -113,6 +115,8 @@ select * from v1;
 c+1
 0
 -1
+MariaDB-5.3: the following EXPLAIN produces incorrect #rows for table t1.
+MariaDB-5.3: this is expected to go away when FROM subquery optimizations are pushed
 explain select * from v1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	
diff --git a/mysql-test/suite/vcol/r/vcol_view_myisam.result b/mysql-test/suite/vcol/r/vcol_view_myisam.result
index bd5999792ff..dedb62a00fb 100644
--- a/mysql-test/suite/vcol/r/vcol_view_myisam.result
+++ b/mysql-test/suite/vcol/r/vcol_view_myisam.result
@@ -103,6 +103,8 @@ select * from v1;
 b+1
 0
 -1
+MariaDB-5.3: the following EXPLAIN produces incorrect #rows for table t1.
+MariaDB-5.3: this is expected to go away when FROM subquery optimizations are pushed
 explain select * from v1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	
@@ -113,6 +115,8 @@ select * from v1;
 c+1
 0
 -1
+MariaDB-5.3: the following EXPLAIN produces incorrect #rows for table t1.
+MariaDB-5.3: this is expected to go away when FROM subquery optimizations are pushed
 explain select * from v1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	
diff --git a/mysql-test/t/subselect4.test b/mysql-test/t/subselect4.test
index 768f37c1b6c..89a1f75a9dc 100644
--- a/mysql-test/t/subselect4.test
+++ b/mysql-test/t/subselect4.test
@@ -1,5 +1,8 @@
 # General purpose bug fix tests go here : subselect.test too large
 
+--disable_warnings
+drop table if exists t1,t2,t3,t4,t5,t6;
+--enable_warnings
 
 --echo #
 --echo # Bug #46791: Assertion failed:(table->key_read==0),function unknown
diff --git a/mysql-test/t/subselect_mat.test b/mysql-test/t/subselect_mat.test
index 90ece548b58..4a300561d58 100644
--- a/mysql-test/t/subselect_mat.test
+++ b/mysql-test/t/subselect_mat.test
@@ -3,913 +3,12 @@
 # (WL#1110: Subquery optimization: materialization)
 #
 
---disable_warnings
-drop table if exists t1, t2, t3, t1i, t2i, t3i;
-drop view if exists v1, v2, v1m, v2m;
---enable_warnings
-
-create table t1 (a1 char(8), a2 char(8));
-create table t2 (b1 char(8), b2 char(8));
-create table t3 (c1 char(8), c2 char(8));
-
-insert into t1 values ('1 - 00', '2 - 00');
-insert into t1 values ('1 - 01', '2 - 01');
-insert into t1 values ('1 - 02', '2 - 02');
-
-insert into t2 values ('1 - 01', '2 - 01');
-insert into t2 values ('1 - 01', '2 - 01');
-insert into t2 values ('1 - 02', '2 - 02');
-insert into t2 values ('1 - 02', '2 - 02');
-insert into t2 values ('1 - 03', '2 - 03');
-
-insert into t3 values ('1 - 01', '2 - 01');
-insert into t3 values ('1 - 02', '2 - 02');
-insert into t3 values ('1 - 03', '2 - 03');
-insert into t3 values ('1 - 04', '2 - 04');
-
-# Indexed columns
-create table t1i (a1 char(8), a2 char(8));
-create table t2i (b1 char(8), b2 char(8));
-create table t3i (c1 char(8), c2 char(8));
-create index it1i1 on t1i (a1);
-create index it1i2 on t1i (a2);
-create index it1i3 on t1i (a1, a2);
-
-create index it2i1 on t2i (b1);
-create index it2i2 on t2i (b2);
-create index it2i3 on t2i (b1, b2);
-
-create index it3i1 on t3i (c1);
-create index it3i2 on t3i (c2);
-create index it3i3 on t3i (c1, c2);
-
-insert into t1i select * from t1;
-insert into t2i select * from t2;
-insert into t3i select * from t3;
 
 # force the use of materialization
 set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
 
-/******************************************************************************
-* Simple tests.
-******************************************************************************/
-# non-indexed nullable fields
-explain extended
-select * from t1 where a1 in (select b1 from t2 where b1 > '0');
-select * from t1 where a1 in (select b1 from t2 where b1 > '0');
-
-explain extended
-select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
-select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
-
-explain extended
-select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
-select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
-
-explain extended
-select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
-select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
-
-# indexed columns
-explain extended
-select * from t1i where a1 in (select b1 from t2i where b1 > '0');
-select * from t1i where a1 in (select b1 from t2i where b1 > '0');
-
-explain extended
-select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
-select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
-
-explain extended
-select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
-select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
-
-explain extended
-select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
-select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
-
-explain extended
-select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
-select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
-
-# BUG#31639: Wrong plan for uncorrelated subquery when loose scan is applicable.
-explain extended
-select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
-select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
-
-prepare st1 from "explain select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
-execute st1;
-execute st1;
-prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
-execute st2;
-execute st2;
-
-explain extended
-select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
-select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
--- error 1235
-select * from t1 where (a1, a2) in (select b1, min(b2) from t2i limit 1,1);
-
-# test re-optimization/re-execution with different execution methods
-# prepare once, exec with different modes
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=on';
-prepare st1 from
-"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=on';
-execute st1;
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=on';
-execute st1;
-
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=on';
-prepare st1 from
-"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-execute st1;
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=on';
-execute st1;
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-
-# materialize the result of ORDER BY
-# non-indexed fields
-explain extended
-select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
-select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
-# indexed fields
-explain extended
-select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
-select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
-
-/******************************************************************************
-* Views, UNIONs, several levels of nesting.
-******************************************************************************/
-# materialize the result of subquery over temp-table view
-
-create algorithm=merge view v1 as
-select b1, c2 from t2, t3 where b2 > c2;
-
-create algorithm=merge view v2 as
-select b1, c2 from t2, t3 group by b2, c2;
-
-create algorithm=temptable view v1m as
-select b1, c2 from t2, t3 where b2 > c2;
-
-create algorithm=temptable view v2m as
-select b1, c2 from t2, t3 group by b2, c2;
-
-select * from v1 where (c2, b1) in (select c2, b1 from v2 where b1 is not null);
-select * from v1 where (c2, b1) in (select distinct c2, b1 from v2 where b1 is not null);
-
-select * from v1m where (c2, b1) in (select c2, b1 from v2m where b1 is not null);
-select * from v1m where (c2, b1) in (select distinct c2, b1 from v2m where b1 is not null);
-
-drop view v1, v2, v1m, v2m;
-
-# nested subqueries, views
-explain extended
-select * from t1
-where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
-      (a1, a2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-select * from t1
-where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
-      (a1, a2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-
-explain extended
-select * from t1i
-where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
-      (a1, a2) in (select c1, c2 from t3i
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-select * from t1i
-where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
-      (a1, a2) in (select c1, c2 from t3i
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-
-explain extended
-select * from t1
-where (a1, a2) in (select b1, b2 from t2
-                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
-                         b2 in (select c2 from t3 where c2 LIKE '%03')) and
-      (a1, a2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-select * from t1
-where (a1, a2) in (select b1, b2 from t2
-                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
-                         b2 in (select c2 from t3 where c2 LIKE '%03')) and
-      (a1, a2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-
-# as above with correlated innermost subquery
-explain extended
-select * from t1
-where (a1, a2) in (select b1, b2 from t2
-                   where b2 in (select c2 from t3 t3a where c1 = a1) or
-                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
-      (a1, a2) in (select c1, c2 from t3 t3c
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-select * from t1
-where (a1, a2) in (select b1, b2 from t2
-                   where b2 in (select c2 from t3 t3a where c1 = a1) or
-                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
-      (a1, a2) in (select c1, c2 from t3 t3c
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-
-
-# multiple levels of nesting subqueries, unions
-explain extended
-(select * from t1
-where (a1, a2) in (select b1, b2 from t2
-                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
-                         b2 in (select c2 from t3 where c2 LIKE '%03')
-                   group by b1, b2) and
-      (a1, a2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
-UNION
-(select * from t1i
-where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
-      (a1, a2) in (select c1, c2 from t3i
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
-
-(select * from t1
-where (a1, a2) in (select b1, b2 from t2
-                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
-                         b2 in (select c2 from t3 where c2 LIKE '%03')
-                   group by b1, b2) and
-      (a1, a2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
-UNION
-(select * from t1i
-where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
-      (a1, a2) in (select c1, c2 from t3i
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
-
-
-# UNION of subqueries as a subquery (thus it is not computed via materialization)
-explain extended
-select * from t1
-where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
-      (a1, a2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-select * from t1
-where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
-      (a1, a2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
-# as above, with a join conditon between the outer references
-explain extended
-select * from t1, t3
-where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
-      (c1, c2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
-       a1 = c1;
-select * from t1, t3
-where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
-      (c1, c2) in (select c1, c2 from t3
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
-       a1 = c1;
-
-
-/******************************************************************************
-* Negative tests, where materialization should not be applied.
-******************************************************************************/
-# UNION in a subquery
-explain extended
-select * from t3
-where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
-select * from t3
-where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
-
-# correlation
-explain extended
-select * from t1
-where (a1, a2) in (select b1, b2 from t2
-                   where b2 in (select c2 from t3 t3a where c1 = a1) or
-                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
-      (a1, a2) in (select c1, c2 from t3 t3c
-                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0' or b2 = a2));
-
-# subquery has no tables
-explain extended
-select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
-select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
-explain extended
-select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
-select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
-
-
-/******************************************************************************
-* Subqueries in other uncovered clauses.
-******************************************************************************/
-
-/* SELECT clause */
-select ((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL from t1;
-
-/* GROUP BY clause */
-create table columns (col int key);
-insert into columns values (1), (2);
-
-explain extended
-select * from t1 group by (select col from columns limit 1);
-select * from t1 group by (select col from columns limit 1);
-
-explain extended
-select * from t1 group by (a1 in (select col from columns));
-select * from t1 group by (a1 in (select col from columns));
-
-/* ORDER BY clause */
-explain extended
-select * from t1 order by (select col from columns limit 1);
-select * from t1 order by (select col from columns limit 1);
-
-/******************************************************************************
-* Column types/sizes that affect materialization.
-******************************************************************************/
-
-/*
-  Test that BLOBs are not materialized (except when arguments of some functions).
-*/
-# force materialization to be always considered
+--source t/subselect_sj_mat.test
 set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-set @prefix_len = 6;
-
-# BLOB == 16 (small blobs that could be stored in HEAP tables)
-set @blob_len = 16;
-set @suffix_len = @blob_len - @prefix_len;
-
-create table t1_16 (a1 blob(16), a2 blob(16));
-create table t2_16 (b1 blob(16), b2 blob(16));
-create table t3_16 (c1 blob(16), c2 blob(16));
-
-insert into t1_16 values
- (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
-insert into t1_16 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t1_16 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-
-insert into t2_16 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t2_16 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-insert into t2_16 values
- (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
-
-insert into t3_16 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t3_16 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-insert into t3_16 values
- (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
-insert into t3_16 values
- (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
-
-# single value transformer
-explain extended select left(a1,7), left(a2,7)
-from t1_16
-where a1 in (select b1 from t2_16 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_16
-where a1 in (select b1 from t2_16 where b1 > '0');
-
-# row value transformer
-explain extended select left(a1,7), left(a2,7)
-from t1_16
-where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_16
-where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');
-
-# string function with a blob argument, the return type may be != blob
-explain extended select left(a1,7), left(a2,7)
-from t1_16
-where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_16
-where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
-
-# group_concat with a blob argument - depends on
-# the variable group_concat_max_len, and
-# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
-explain extended select left(a1,7), left(a2,7)
-from t1_16
-where a1 in (select group_concat(b1) from t2_16 group by b2);
-
-select left(a1,7), left(a2,7)
-from t1_16
-where a1 in (select group_concat(b1) from t2_16 group by b2);
-
-set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 512)
-
-explain extended select left(a1,7), left(a2,7)
-from t1_16
-where a1 in (select group_concat(b1) from t2_16 group by b2);
-
-select left(a1,7), left(a2,7)
-from t1_16
-where a1 in (select group_concat(b1) from t2_16 group by b2);
-
-# BLOB column at the second (intermediate) level of nesting
-explain extended
-select * from t1
-where concat(a1,'x') IN
-      (select left(a1,8) from t1_16
-       where (a1, a2) IN
-             (select t2_16.b1, t2_16.b2 from t2_16, t2
-              where t2.b2 = substring(t2_16.b2,1,6) and
-                    t2.b1 IN (select c1 from t3 where c2 > '0')));
-
-
-drop table t1_16, t2_16, t3_16;
-
-
-# BLOB == 512 (CONVERT_IF_BIGGER_TO_BLOB == 512)
-set @blob_len = 512;
-set @suffix_len = @blob_len - @prefix_len;
-
-create table t1_512 (a1 blob(512), a2 blob(512));
-create table t2_512 (b1 blob(512), b2 blob(512));
-create table t3_512 (c1 blob(512), c2 blob(512));
-
-insert into t1_512 values
- (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
-insert into t1_512 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t1_512 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-
-insert into t2_512 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t2_512 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-insert into t2_512 values
- (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
-
-insert into t3_512 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t3_512 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-insert into t3_512 values
- (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
-insert into t3_512 values
- (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
-
-# single value transformer
-explain extended select left(a1,7), left(a2,7)
-from t1_512
-where a1 in (select b1 from t2_512 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_512
-where a1 in (select b1 from t2_512 where b1 > '0');
-
-# row value transformer
-explain extended select left(a1,7), left(a2,7)
-from t1_512
-where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_512
-where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');
-
-# string function with a blob argument, the return type may be != blob
-explain extended select left(a1,7), left(a2,7)
-from t1_512
-where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_512
-where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
-
-# group_concat with a blob argument - depends on
-# the variable group_concat_max_len, and
-# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
-explain extended select left(a1,7), left(a2,7)
-from t1_512
-where a1 in (select group_concat(b1) from t2_512 group by b2);
-
-select left(a1,7), left(a2,7)
-from t1_512
-where a1 in (select group_concat(b1) from t2_512 group by b2);
-
-set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 512)
-
-explain extended select left(a1,7), left(a2,7)
-from t1_512
-where a1 in (select group_concat(b1) from t2_512 group by b2);
-
-select left(a1,7), left(a2,7)
-from t1_512
-where a1 in (select group_concat(b1) from t2_512 group by b2);
-
-drop table t1_512, t2_512, t3_512;
-
-
-# BLOB == 1024 (group_concat_max_len == 1024)
-set @blob_len = 1024;
-set @suffix_len = @blob_len - @prefix_len;
-
-create table t1_1024 (a1 blob(1024), a2 blob(1024));
-create table t2_1024 (b1 blob(1024), b2 blob(1024));
-create table t3_1024 (c1 blob(1024), c2 blob(1024));
-
-insert into t1_1024 values
- (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
-insert into t1_1024 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t1_1024 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-
-insert into t2_1024 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t2_1024 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-insert into t2_1024 values
- (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
-
-insert into t3_1024 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t3_1024 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-insert into t3_1024 values
- (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
-insert into t3_1024 values
- (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
-
-# single value transformer
-explain extended select left(a1,7), left(a2,7)
-from t1_1024
-where a1 in (select b1 from t2_1024 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_1024
-where a1 in (select b1 from t2_1024 where b1 > '0');
-
-# row value transformer
-explain extended select left(a1,7), left(a2,7)
-from t1_1024
-where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_1024
-where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');
-
-# string function with a blob argument, the return type may be != blob
-explain extended select left(a1,7), left(a2,7)
-from t1_1024
-where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_1024
-where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');
-
-# group_concat with a blob argument - depends on
-# the variable group_concat_max_len, and
-# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
-explain extended select left(a1,7), left(a2,7)
-from t1_1024
-where a1 in (select group_concat(b1) from t2_1024 group by b2);
-
-select left(a1,7), left(a2,7)
-from t1_1024
-where a1 in (select group_concat(b1) from t2_1024 group by b2);
-
-set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 1024)
-
-explain extended select left(a1,7), left(a2,7)
-from t1_1024
-where a1 in (select group_concat(b1) from t2_1024 group by b2);
-
-select left(a1,7), left(a2,7)
-from t1_1024
-where a1 in (select group_concat(b1) from t2_1024 group by b2);
-
-drop table t1_1024, t2_1024, t3_1024;
-
-
-# BLOB == 1025
-set @blob_len = 1025;
-set @suffix_len = @blob_len - @prefix_len;
-
-create table t1_1025 (a1 blob(1025), a2 blob(1025));
-create table t2_1025 (b1 blob(1025), b2 blob(1025));
-create table t3_1025 (c1 blob(1025), c2 blob(1025));
-
-insert into t1_1025 values
- (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
-insert into t1_1025 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t1_1025 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-
-insert into t2_1025 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t2_1025 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-insert into t2_1025 values
- (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
-
-insert into t3_1025 values
- (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
-insert into t3_1025 values
- (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
-insert into t3_1025 values
- (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
-insert into t3_1025 values
- (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
-
-# single value transformer
-explain extended select left(a1,7), left(a2,7)
-from t1_1025
-where a1 in (select b1 from t2_1025 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_1025
-where a1 in (select b1 from t2_1025 where b1 > '0');
-
-# row value transformer
-explain extended select left(a1,7), left(a2,7)
-from t1_1025
-where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_1025
-where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');
-
-# string function with a blob argument, the return type may be != blob
-explain extended select left(a1,7), left(a2,7)
-from t1_1025
-where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');
-
-select left(a1,7), left(a2,7)
-from t1_1025
-where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');
-
-# group_concat with a blob argument - depends on
-# the variable group_concat_max_len, and
-# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
-explain extended select left(a1,7), left(a2,7)
-from t1_1025
-where a1 in (select group_concat(b1) from t2_1025 group by b2);
-
-select left(a1,7), left(a2,7)
-from t1_1025
-where a1 in (select group_concat(b1) from t2_1025 group by b2);
-
-set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 1025)
-
-explain extended select left(a1,7), left(a2,7)
-from t1_1025
-where a1 in (select group_concat(b1) from t2_1025 group by b2);
-
-select left(a1,7), left(a2,7)
-from t1_1025
-where a1 in (select group_concat(b1) from t2_1025 group by b2);
-
-drop table t1_1025, t2_1025, t3_1025;
-
-# test for BIT fields
-create table t1bit (a1 bit(3), a2 bit(3));
-create table t2bit (b1 bit(3), b2 bit(3));
-
-insert into t1bit values (b'000', b'100');
-insert into t1bit values (b'001', b'101');
-insert into t1bit values (b'010', b'110');
-
-insert into t2bit values (b'001', b'101');
-insert into t2bit values (b'010', b'110');
-insert into t2bit values (b'110', b'111');
-
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-
-explain extended select bin(a1), bin(a2)
-from t1bit
-where (a1, a2) in (select b1, b2 from t2bit);
-
-select bin(a1), bin(a2)
-from t1bit
-where (a1, a2) in (select b1, b2 from t2bit);
-
-drop table t1bit, t2bit;
-
-# test mixture of BIT and BLOB
-create table t1bb (a1 bit(3), a2 blob(3));
-create table t2bb (b1 bit(3), b2 blob(3));
-
-insert into t1bb values (b'000', '100');
-insert into t1bb values (b'001', '101');
-insert into t1bb values (b'010', '110');
-
-insert into t2bb values (b'001', '101');
-insert into t2bb values (b'010', '110');
-insert into t2bb values (b'110', '111');
-
-explain extended select bin(a1), a2
-from t1bb
-where (a1, a2) in (select b1, b2 from t2bb);
-
-select bin(a1), a2
-from t1bb
-where (a1, a2) in (select b1, b2 from t2bb);
-
-drop table t1bb, t2bb;
-drop table t1, t2, t3, t1i, t2i, t3i, columns;
-
-/******************************************************************************
-* Test the cache of the left operand of IN.
-******************************************************************************/
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-
-# Test that default values of Cached_item are not used for comparison
-create table t1 (s1 int);
-create table t2 (s2 int);
-insert into t1 values (5),(1),(0);
-insert into t2 values (0), (1);
-select s2 from t2 where s2 in (select s1 from t1);
-drop table t1, t2;
-
-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);
-
-# the first outer row has no matching inner row
-insert into t1 values (1,10);
-insert into t1 values (1,20);
-insert into t1 values (2,10);
-insert into t1 values (2,20);
-insert into t1 values (2,30);
-insert into t1 values (3,20);
-insert into t1 values (4,40);
-
-insert into t2 values (2,10);
-insert into t2 values (2,20);
-insert into t2 values (2,40);
-insert into t2 values (3,20);
-insert into t2 values (4,10);
-insert into t2 values (5,10);
-
-insert into t3 values (10);
-insert into t3 values (10);
-insert into t3 values (20);
-insert into t3 values (30);
-
-explain extended
-select a from t1 where a in (select c from t2 where d >= 20);
-select a from t1 where a in (select c from t2 where d >= 20);
-
-create index it1a on t1(a);
-
-explain extended
-select a from t1 where a in (select c from t2 where d >= 20);
-select a from t1 where a in (select c from t2 where d >= 20);
-
-# the first outer row has a matching inner row
-insert into t2 values (1,10);
-
-explain extended
-select a from t1 where a in (select c from t2 where d >= 20);
-select a from t1 where a in (select c from t2 where d >= 20);
-
-# cacheing for IN predicates inside a having clause - here the cached
-# items are changed to point to temporary tables.
-explain extended
-select a from t1 group by a having a in (select c from t2 where d >= 20);
-select a from t1 group by a having a in (select c from t2 where d >= 20);
-
-# create an index that can be used for the outer query GROUP BY 
-create index iab on t1(a, b);
-explain extended
-select a from t1 group by a having a in (select c from t2 where d >= 20);
-select a from t1 group by a having a in (select c from t2 where d >= 20);
-
-explain extended
-select a from t1 group by a
-having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
-select a from t1 group by a
-having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
-explain extended
-select a from t1
-where a in (select c from t2 where d >= some(select e from t3 where b=e));
-select a from t1
-where a in (select c from t2 where d >= some(select e from t3 where b=e));
-
-drop table t1, t2, t3;
-
-#
-# BUG#36133 "Assertion `exec_method != MATERIALIZATION || (exec_method == MATERIALIZATION &&"
-#
-create table t2 (a int, b int, key(a), key(b));
-insert into t2 values (3,3),(3,3),(3,3);
-select 1 from t2 where  
-    t2.a > 1 
-  or 
-    t2.a = 3 and not t2.a not in (select t2.b from t2);
-drop table t2;
-
-#
-# BUG#37896 Assertion on entry of Item_in_subselect::exec on subquery with AND NOT
-#
-create table t1 (a1 int key);
-create table t2 (b1 int);
-insert into t1 values (5);
--- echo Only the last query returns correct result. Filed as BUG#40037.
-# Query with group by, executed via materialization
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
-select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
-# Query with group by, executed via IN=>EXISTS
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
-explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
-select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
-
-# Executed with materialization
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-explain select min(a1) from t1 where 7 in (select b1 from t2);
-select min(a1) from t1 where 7 in (select b1 from t2);
-# Executed via IN=>EXISTS
-set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
-explain select min(a1) from t1 where 7 in (select b1 from t2);
-select min(a1) from t1 where 7 in (select b1 from t2);
-# Executed with semi-join. Notice, this time we get a different result (NULL).
-# This is the only correct result of all five queries. This difference is
-# filed as BUG#40037.
-set @@optimizer_switch='materialization=off,in_to_exists=off,semijoin=on';
-explain select min(a1) from t1 where 7 in (select b1 from t2);
-select min(a1) from t1 where 7 in (select b1 from t2);
-drop table t1,t2;
-
-#
-# BUG#36752 "subquery materialization produces wrong results when comparing different types"
-#
-create table t1 (a char(2), b varchar(10));
-insert into t1 values ('a',  'aaa');
-insert into t1 values ('aa', 'aaaa');
-
-set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
-explain select a,b from t1 where b in (select a from t1);
-select a,b from t1 where b in (select a from t1);
-prepare st1 from "select a,b from t1 where b in (select a from t1)";
-execute st1;
-execute st1;
-drop table t1;
-
-#
-# Bug #44303 Assertion failures in Field_new_decimal::store_decimal
-#            when executing materialized InsideOut semijoin
-# 
-CREATE TABLE t1 (f1 INT, f2 DECIMAL(5,3)) ENGINE=MyISAM;
-INSERT INTO t1 (f1, f2) VALUES (1, 1.789);
-INSERT INTO t1 (f1, f2) VALUES (13, 1.454);
-INSERT INTO t1 (f1, f2) VALUES (10, 1.668);
-
-CREATE TABLE t2 LIKE t1;
-INSERT INTO t2 VALUES (1, 1.789);
-INSERT INTO t2 VALUES (13, 1.454);
-
-SET @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=on';
-EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
-SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
-
-DROP TABLE t1, t2;
-
-#
-# BUG#46548 IN-subqueries return 0 rows with materialization=on
-#
-CREATE TABLE t1 (
-  pk int,
-  a varchar(1),
-  b varchar(4),
-  c varchar(4),
-  d varchar(4),
-  PRIMARY KEY (pk)
-);
-INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff');
-
-CREATE TABLE t2 LIKE t1;
-INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff');
-
-SET @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=on';
-EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
-SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
-SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0);
-DROP TABLE t1, t2;
-
---echo #
---echo # BUG#50019: Wrong result for IN-subquery with materialization
---echo #
-create table t1(i int);
-insert into t1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
-create table t2(i int);
-insert into t2 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
-create table t3(i int);
-insert into t3 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
-select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
-set @save_optimizer_switch=@@optimizer_switch;
-set session optimizer_switch='materialization=off,in_to_exists=on';
-select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
-set session optimizer_switch=@save_optimizer_switch;
-drop table t1, t2, t3;
-
 #
 # Test that the contents of the temp table of a materialized subquery is
 # cleaned up between PS re-executions.
@@ -1016,6 +115,36 @@ SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
 SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0);
 DROP TABLE t1, t2;
 
+
+-- echo #
+-- echo # BUG#724228: Wrong result with materialization=on and three aggregates in maria-5.3-mwl90
+-- echo #
+CREATE TABLE t1 ( f2 int(11)) ;
+INSERT IGNORE INTO t1 VALUES ('7'),('9'),('7'),('4'),('2'),('6'),('8'),('5'),('6'),('188'),('2'),('1'),('1'),('0'),('9'),('4');
+
+CREATE TABLE t2 ( f1 int(11), f2 int(11)) ENGINE=MyISAM;
+INSERT IGNORE INTO t2 VALUES ('1','1');
+
+CREATE TABLE t3 ( f1 int(11), f2 int(11), f3 int(11), PRIMARY KEY (f1)) ;
+INSERT IGNORE INTO t3 VALUES ('16','6','1'),('18','3','4'),('19',NULL,'9'),('20','0','6'),('41','2','0'),('42','2','5'),('43','9','6'),('44','7','4'),('45','1','4'),('46','222','238'),('47','3','6'),('48','6','6'),('49',NULL,'1'),('50','5','1');
+
+SET @_save_join_cache_level = @@join_cache_level;
+SET @_save_optimizer_switch = @@optimizer_switch;
+
+SET join_cache_level = 1;
+SET optimizer_switch='materialization=on';
+
+SELECT f1 FROM t3
+WHERE 
+  f1 NOT IN (SELECT MAX(f2) FROM t1) AND 
+  f3 IN (SELECT MIN(f1) FROM t2) AND 
+  f1 IN (SELECT COUNT(f2) FROM t1);
+
+SET @@join_cache_level = @_save_join_cache_level;
+SET @@optimizer_switch = @_save_optimizer_switch;
+
+drop table t1, t2, t3;
+
 --echo #
 --echo # LPBUG#719198 Ordered_key::cmp_key_with_search_key(rownum_t): Assertion `!compare_pred[i]->null_value'
 --echo # failed with subquery on both sides of NOT IN and materialization
diff --git a/mysql-test/t/subselect_sj2.test b/mysql-test/t/subselect_sj2.test
index 9e71d91b47b..274e7b42c6f 100644
--- a/mysql-test/t/subselect_sj2.test
+++ b/mysql-test/t/subselect_sj2.test
@@ -494,6 +494,12 @@ drop table t1, t2;
 # Bug#33062: subquery in stored routine cause crash
 #
 
+--disable_warnings
+drop procedure if exists p1;
+drop procedure if exists p2;
+drop procedure if exists p3;
+drop procedure if exists p4;
+--enable_warnings
 CREATE TABLE t1(a INT);
 CREATE TABLE t2(c INT);
 
diff --git a/mysql-test/t/subselect_sj_mat.test b/mysql-test/t/subselect_sj_mat.test
new file mode 100644
index 00000000000..728945be880
--- /dev/null
+++ b/mysql-test/t/subselect_sj_mat.test
@@ -0,0 +1,974 @@
+#
+# Hash semi-join regression tests
+# (WL#1110: Subquery optimization: materialization)
+#
+
+--disable_warnings
+drop table if exists t1, t2, t3, t1i, t2i, t3i;
+drop table if exists columns;
+drop table if exists t1_16, t2_16, t3_16;
+drop view if exists v1, v2, v1m, v2m;
+--enable_warnings
+
+create table t1 (a1 char(8), a2 char(8));
+create table t2 (b1 char(8), b2 char(8));
+create table t3 (c1 char(8), c2 char(8));
+
+insert into t1 values ('1 - 00', '2 - 00');
+insert into t1 values ('1 - 01', '2 - 01');
+insert into t1 values ('1 - 02', '2 - 02');
+
+insert into t2 values ('1 - 01', '2 - 01');
+insert into t2 values ('1 - 01', '2 - 01');
+insert into t2 values ('1 - 02', '2 - 02');
+insert into t2 values ('1 - 02', '2 - 02');
+insert into t2 values ('1 - 03', '2 - 03');
+
+insert into t3 values ('1 - 01', '2 - 01');
+insert into t3 values ('1 - 02', '2 - 02');
+insert into t3 values ('1 - 03', '2 - 03');
+insert into t3 values ('1 - 04', '2 - 04');
+
+# Indexed columns
+create table t1i (a1 char(8), a2 char(8));
+create table t2i (b1 char(8), b2 char(8));
+create table t3i (c1 char(8), c2 char(8));
+create index it1i1 on t1i (a1);
+create index it1i2 on t1i (a2);
+create index it1i3 on t1i (a1, a2);
+
+create index it2i1 on t2i (b1);
+create index it2i2 on t2i (b2);
+create index it2i3 on t2i (b1, b2);
+
+create index it3i1 on t3i (c1);
+create index it3i2 on t3i (c2);
+create index it3i3 on t3i (c1, c2);
+
+insert into t1i select * from t1;
+insert into t2i select * from t2;
+insert into t3i select * from t3;
+
+# force the use of materialization
+set @@optimizer_switch='materialization=on,in_to_exists=off,firstmatch=off';
+
+/******************************************************************************
+* Simple tests.
+******************************************************************************/
+# non-indexed nullable fields
+explain extended
+select * from t1 where a1 in (select b1 from t2 where b1 > '0');
+select * from t1 where a1 in (select b1 from t2 where b1 > '0');
+
+explain extended
+select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
+select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
+
+explain extended
+select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
+select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
+
+explain extended
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
+
+# indexed columns
+--replace_column 7 #
+--replace_regex /it1.*/_it1_idx/  /test.t2i.*/_ref_/  /Using index$// /Using where$//
+explain extended
+select * from t1i where a1 in (select b1 from t2i where b1 > '0');
+select * from t1i where a1 in (select b1 from t2i where b1 > '0');
+
+--replace_column 6 # 8 # 11 #
+explain extended
+select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
+select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
+
+--replace_column 7 #
+--replace_regex /it1.*/_it1_idx/  /test.t2i.*/_ref_/  /Using index$// /Using where$//
+explain extended
+select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
+select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
+
+--replace_column 6 # 7 # 8 # 11 #
+explain extended
+select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
+select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
+
+--replace_column 6 # 7 # 8 # 11 #
+explain extended
+select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
+select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
+
+# BUG#31639: Wrong plan for uncorrelated subquery when loose scan is applicable.
+explain extended
+select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
+select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
+
+prepare st1 from "explain select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
+execute st1;
+execute st1;
+prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
+execute st2;
+execute st2;
+
+explain extended
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
+-- error 1235
+select * from t1 where (a1, a2) in (select b1, min(b2) from t2i limit 1,1);
+
+# test re-optimization/re-execution with different execution methods
+# prepare once, exec with different modes
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='default,semijoin=off';
+prepare st1 from
+"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
+set @@optimizer_switch='default,materialization=off';
+execute st1;
+set @@optimizer_switch='default,semijoin=off';
+execute st1;
+
+set @@optimizer_switch='default,materialization=off';
+prepare st1 from
+"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
+set @@optimizer_switch='default,semijoin=off';
+execute st1;
+set @@optimizer_switch='default,materialization=off';
+execute st1;
+set @@optimizer_switch=@save_optimizer_switch;
+
+# materialize the result of ORDER BY
+# non-indexed fields
+explain extended
+select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
+select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
+# indexed fields
+explain extended
+select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
+select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
+
+/******************************************************************************
+* Views, UNIONs, several levels of nesting.
+******************************************************************************/
+# materialize the result of subquery over temp-table view
+
+create algorithm=merge view v1 as
+select b1, c2 from t2, t3 where b2 > c2;
+
+create algorithm=merge view v2 as
+select b1, c2 from t2, t3 group by b2, c2;
+
+create algorithm=temptable view v1m as
+select b1, c2 from t2, t3 where b2 > c2;
+
+create algorithm=temptable view v2m as
+select b1, c2 from t2, t3 group by b2, c2;
+
+select * from v1 where (c2, b1) in (select c2, b1 from v2 where b1 is not null);
+select * from v1 where (c2, b1) in (select distinct c2, b1 from v2 where b1 is not null);
+
+select * from v1m where (c2, b1) in (select c2, b1 from v2m where b1 is not null);
+select * from v1m where (c2, b1) in (select distinct c2, b1 from v2m where b1 is not null);
+
+drop view v1, v2, v1m, v2m;
+
+# nested subqueries, views
+explain extended
+select * from t1
+where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
+      (a1, a2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+select * from t1
+where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
+      (a1, a2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+
+--replace_column 6 # 7 # 8 # 11 #
+explain extended
+select * from t1i
+where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
+      (a1, a2) in (select c1, c2 from t3i
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+select * from t1i
+where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
+      (a1, a2) in (select c1, c2 from t3i
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+
+explain extended
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
+                         b2 in (select c2 from t3 where c2 LIKE '%03')) and
+      (a1, a2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
+                         b2 in (select c2 from t3 where c2 LIKE '%03')) and
+      (a1, a2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+
+# as above with correlated innermost subquery
+explain extended
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+                   where b2 in (select c2 from t3 t3a where c1 = a1) or
+                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
+      (a1, a2) in (select c1, c2 from t3 t3c
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+                   where b2 in (select c2 from t3 t3a where c1 = a1) or
+                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
+      (a1, a2) in (select c1, c2 from t3 t3c
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+
+
+# multiple levels of nesting subqueries, unions
+--replace_column 6 # 7 # 8 # 11 #
+explain extended
+(select * from t1
+where (a1, a2) in (select b1, b2 from t2
+                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
+                         b2 in (select c2 from t3 where c2 LIKE '%03')
+                   group by b1, b2) and
+      (a1, a2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
+UNION
+(select * from t1i
+where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
+      (a1, a2) in (select c1, c2 from t3i
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
+
+(select * from t1
+where (a1, a2) in (select b1, b2 from t2
+                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
+                         b2 in (select c2 from t3 where c2 LIKE '%03')
+                   group by b1, b2) and
+      (a1, a2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
+UNION
+(select * from t1i
+where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
+      (a1, a2) in (select c1, c2 from t3i
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
+
+
+# UNION of subqueries as a subquery (thus it is not computed via materialization)
+explain extended
+select * from t1
+where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
+      (a1, a2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+select * from t1
+where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
+      (a1, a2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
+# as above, with a join conditon between the outer references
+explain extended
+select * from t1, t3
+where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
+      (c1, c2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
+       a1 = c1;
+select * from t1, t3
+where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
+      (c1, c2) in (select c1, c2 from t3
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
+       a1 = c1;
+
+
+/******************************************************************************
+* Negative tests, where materialization should not be applied.
+******************************************************************************/
+# UNION in a subquery
+explain extended
+select * from t3
+where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
+select * from t3
+where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
+
+# correlation
+explain extended
+select * from t1
+where (a1, a2) in (select b1, b2 from t2
+                   where b2 in (select c2 from t3 t3a where c1 = a1) or
+                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
+      (a1, a2) in (select c1, c2 from t3 t3c
+                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0' or b2 = a2));
+
+# subquery has no tables
+explain extended
+select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
+select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
+explain extended
+select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
+select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
+
+
+/******************************************************************************
+* Subqueries in other uncovered clauses.
+******************************************************************************/
+
+/* SELECT clause */
+select ((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL from t1;
+
+/* GROUP BY clause */
+create table columns (col int key);
+insert into columns values (1), (2);
+
+explain extended
+select * from t1 group by (select col from columns limit 1);
+select * from t1 group by (select col from columns limit 1);
+
+explain extended
+select * from t1 group by (a1 in (select col from columns));
+select * from t1 group by (a1 in (select col from columns));
+
+/* ORDER BY clause */
+explain extended
+select * from t1 order by (select col from columns limit 1);
+select * from t1 order by (select col from columns limit 1);
+
+/******************************************************************************
+* Column types/sizes that affect materialization.
+******************************************************************************/
+
+/*
+  Test that BLOBs are not materialized (except when arguments of some functions).
+*/
+# force materialization to be always considered
+set @prefix_len = 6;
+
+# BLOB == 16 (small blobs that could be stored in HEAP tables)
+set @blob_len = 16;
+set @suffix_len = @blob_len - @prefix_len;
+
+create table t1_16 (a1 blob(16), a2 blob(16));
+create table t2_16 (b1 blob(16), b2 blob(16));
+create table t3_16 (c1 blob(16), c2 blob(16));
+
+insert into t1_16 values
+ (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_16 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_16 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+
+insert into t2_16 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_16 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_16 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+
+insert into t3_16 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t3_16 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t3_16 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_16 values
+ (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
+
+# single value transformer
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select b1 from t2_16 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select b1 from t2_16 where b1 > '0');
+
+# row value transformer
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_16
+where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');
+
+# string function with a blob argument, the return type may be != blob
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
+
+# group_concat with a blob argument - depends on
+# the variable group_concat_max_len, and
+# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select group_concat(b1) from t2_16 group by b2);
+
+select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select group_concat(b1) from t2_16 group by b2);
+
+set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 512)
+
+explain extended select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select group_concat(b1) from t2_16 group by b2);
+
+select left(a1,7), left(a2,7)
+from t1_16
+where a1 in (select group_concat(b1) from t2_16 group by b2);
+
+# BLOB column at the second (intermediate) level of nesting
+explain extended
+select * from t1
+where concat(a1,'x') IN
+      (select left(a1,8) from t1_16
+       where (a1, a2) IN
+             (select t2_16.b1, t2_16.b2 from t2_16, t2
+              where t2.b2 = substring(t2_16.b2,1,6) and
+                    t2.b1 IN (select c1 from t3 where c2 > '0')));
+
+
+drop table t1_16, t2_16, t3_16;
+
+
+# BLOB == 512 (CONVERT_IF_BIGGER_TO_BLOB == 512)
+set @blob_len = 512;
+set @suffix_len = @blob_len - @prefix_len;
+
+create table t1_512 (a1 blob(512), a2 blob(512));
+create table t2_512 (b1 blob(512), b2 blob(512));
+create table t3_512 (c1 blob(512), c2 blob(512));
+
+insert into t1_512 values
+ (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_512 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_512 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+
+insert into t2_512 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_512 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_512 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+
+insert into t3_512 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t3_512 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t3_512 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_512 values
+ (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
+
+# single value transformer
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select b1 from t2_512 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select b1 from t2_512 where b1 > '0');
+
+# row value transformer
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_512
+where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');
+
+# string function with a blob argument, the return type may be != blob
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
+
+# group_concat with a blob argument - depends on
+# the variable group_concat_max_len, and
+# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select group_concat(b1) from t2_512 group by b2);
+
+select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select group_concat(b1) from t2_512 group by b2);
+
+set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 512)
+
+explain extended select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select group_concat(b1) from t2_512 group by b2);
+
+select left(a1,7), left(a2,7)
+from t1_512
+where a1 in (select group_concat(b1) from t2_512 group by b2);
+
+drop table t1_512, t2_512, t3_512;
+
+
+# BLOB == 1024 (group_concat_max_len == 1024)
+set @blob_len = 1024;
+set @suffix_len = @blob_len - @prefix_len;
+
+create table t1_1024 (a1 blob(1024), a2 blob(1024));
+create table t2_1024 (b1 blob(1024), b2 blob(1024));
+create table t3_1024 (c1 blob(1024), c2 blob(1024));
+
+insert into t1_1024 values
+ (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_1024 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_1024 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+
+insert into t2_1024 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_1024 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1024 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+
+insert into t3_1024 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t3_1024 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t3_1024 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_1024 values
+ (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
+
+# single value transformer
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select b1 from t2_1024 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select b1 from t2_1024 where b1 > '0');
+
+# row value transformer
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_1024
+where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');
+
+# string function with a blob argument, the return type may be != blob
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');
+
+# group_concat with a blob argument - depends on
+# the variable group_concat_max_len, and
+# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select group_concat(b1) from t2_1024 group by b2);
+
+select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select group_concat(b1) from t2_1024 group by b2);
+
+set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 1024)
+
+explain extended select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select group_concat(b1) from t2_1024 group by b2);
+
+select left(a1,7), left(a2,7)
+from t1_1024
+where a1 in (select group_concat(b1) from t2_1024 group by b2);
+
+drop table t1_1024, t2_1024, t3_1024;
+
+
+# BLOB == 1025
+set @blob_len = 1025;
+set @suffix_len = @blob_len - @prefix_len;
+
+create table t1_1025 (a1 blob(1025), a2 blob(1025));
+create table t2_1025 (b1 blob(1025), b2 blob(1025));
+create table t3_1025 (c1 blob(1025), c2 blob(1025));
+
+insert into t1_1025 values
+ (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_1025 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_1025 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+
+insert into t2_1025 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_1025 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1025 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+
+insert into t3_1025 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t3_1025 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t3_1025 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+insert into t3_1025 values
+ (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
+
+# single value transformer
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select b1 from t2_1025 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select b1 from t2_1025 where b1 > '0');
+
+# row value transformer
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_1025
+where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');
+
+# string function with a blob argument, the return type may be != blob
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');
+
+select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');
+
+# group_concat with a blob argument - depends on
+# the variable group_concat_max_len, and
+# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select group_concat(b1) from t2_1025 group by b2);
+
+select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select group_concat(b1) from t2_1025 group by b2);
+
+set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 1025)
+
+explain extended select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select group_concat(b1) from t2_1025 group by b2);
+
+select left(a1,7), left(a2,7)
+from t1_1025
+where a1 in (select group_concat(b1) from t2_1025 group by b2);
+
+drop table t1_1025, t2_1025, t3_1025;
+
+# test for BIT fields
+create table t1bit (a1 bit(3), a2 bit(3));
+create table t2bit (b1 bit(3), b2 bit(3));
+
+insert into t1bit values (b'000', b'100');
+insert into t1bit values (b'001', b'101');
+insert into t1bit values (b'010', b'110');
+
+insert into t2bit values (b'001', b'101');
+insert into t2bit values (b'010', b'110');
+insert into t2bit values (b'110', b'111');
+
+explain extended select bin(a1), bin(a2)
+from t1bit
+where (a1, a2) in (select b1, b2 from t2bit);
+
+select bin(a1), bin(a2)
+from t1bit
+where (a1, a2) in (select b1, b2 from t2bit);
+
+drop table t1bit, t2bit;
+
+# test mixture of BIT and BLOB
+create table t1bb (a1 bit(3), a2 blob(3));
+create table t2bb (b1 bit(3), b2 blob(3));
+
+insert into t1bb values (b'000', '100');
+insert into t1bb values (b'001', '101');
+insert into t1bb values (b'010', '110');
+
+insert into t2bb values (b'001', '101');
+insert into t2bb values (b'010', '110');
+insert into t2bb values (b'110', '111');
+
+explain extended select bin(a1), a2
+from t1bb
+where (a1, a2) in (select b1, b2 from t2bb);
+
+select bin(a1), a2
+from t1bb
+where (a1, a2) in (select b1, b2 from t2bb);
+
+drop table t1bb, t2bb;
+drop table t1, t2, t3, t1i, t2i, t3i, columns;
+
+/******************************************************************************
+* Test the cache of the left operand of IN.
+******************************************************************************/
+
+# Test that default values of Cached_item are not used for comparison
+create table t1 (s1 int);
+create table t2 (s2 int);
+insert into t1 values (5),(1),(0);
+insert into t2 values (0), (1);
+select s2 from t2 where s2 in (select s1 from t1);
+drop table t1, t2;
+
+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);
+
+# the first outer row has no matching inner row
+insert into t1 values (1,10);
+insert into t1 values (1,20);
+insert into t1 values (2,10);
+insert into t1 values (2,20);
+insert into t1 values (2,30);
+insert into t1 values (3,20);
+insert into t1 values (4,40);
+
+insert into t2 values (2,10);
+insert into t2 values (2,20);
+insert into t2 values (2,40);
+insert into t2 values (3,20);
+insert into t2 values (4,10);
+insert into t2 values (5,10);
+
+insert into t3 values (10);
+insert into t3 values (10);
+insert into t3 values (20);
+insert into t3 values (30);
+
+explain extended
+select a from t1 where a in (select c from t2 where d >= 20);
+select a from t1 where a in (select c from t2 where d >= 20);
+
+create index it1a on t1(a);
+
+explain extended
+select a from t1 where a in (select c from t2 where d >= 20);
+select a from t1 where a in (select c from t2 where d >= 20);
+
+# the first outer row has a matching inner row
+insert into t2 values (1,10);
+
+explain extended
+select a from t1 where a in (select c from t2 where d >= 20);
+select a from t1 where a in (select c from t2 where d >= 20);
+
+# cacheing for IN predicates inside a having clause - here the cached
+# items are changed to point to temporary tables.
+explain extended
+select a from t1 group by a having a in (select c from t2 where d >= 20);
+select a from t1 group by a having a in (select c from t2 where d >= 20);
+
+# create an index that can be used for the outer query GROUP BY 
+create index iab on t1(a, b);
+explain extended
+select a from t1 group by a having a in (select c from t2 where d >= 20);
+select a from t1 group by a having a in (select c from t2 where d >= 20);
+
+explain extended
+select a from t1 group by a
+having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
+select a from t1 group by a
+having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
+explain extended
+select a from t1
+where a in (select c from t2 where d >= some(select e from t3 where b=e));
+select a from t1
+where a in (select c from t2 where d >= some(select e from t3 where b=e));
+
+drop table t1, t2, t3;
+
+#
+# BUG#36133 "Assertion `exec_method != MATERIALIZATION || (exec_method == MATERIALIZATION &&"
+#
+create table t2 (a int, b int, key(a), key(b));
+insert into t2 values (3,3),(3,3),(3,3);
+select 1 from t2 where  
+    t2.a > 1 
+  or 
+    t2.a = 3 and not t2.a not in (select t2.b from t2);
+drop table t2;
+
+#
+# BUG#37896 Assertion on entry of Item_in_subselect::exec on subquery with AND NOT
+#
+create table t1 (a1 int key);
+create table t2 (b1 int);
+insert into t1 values (5);
+
+# Query with group by, executed via materialization
+explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
+select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
+# Query with group by, executed via IN=>EXISTS
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='default,materialization=off';
+explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
+select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
+
+# Executed with materialization
+set @@optimizer_switch='default,semijoin=off';
+explain select min(a1) from t1 where 7 in (select b1 from t2);
+select min(a1) from t1 where 7 in (select b1 from t2);
+# Executed with semi-join. Notice, this time we get a different result (NULL).
+# This is the only correct result of all four queries. This difference is
+# filed as BUG#40037.
+set @@optimizer_switch='default,materialization=off';
+-- echo # with MariaDB and MWL#90, this particular case is solved:
+explain select min(a1) from t1 where 7 in (select b1 from t2);
+select min(a1) from t1 where 7 in (select b1 from t2);
+-- echo # but when we go around MWL#90 code, the problem still shows up:
+explain select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
+select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
+set @@optimizer_switch= @save_optimizer_switch;
+drop table t1,t2;
+
+#
+# BUG#36752 "subquery materialization produces wrong results when comparing different types"
+#
+create table t1 (a char(2), b varchar(10));
+insert into t1 values ('a',  'aaa');
+insert into t1 values ('aa', 'aaaa');
+
+explain select a,b from t1 where b in (select a from t1);
+select a,b from t1 where b in (select a from t1);
+prepare st1 from "select a,b from t1 where b in (select a from t1)";
+execute st1;
+execute st1;
+drop table t1;
+
+#
+# Bug #44303 Assertion failures in Field_new_decimal::store_decimal
+#            when executing materialized InsideOut semijoin
+# 
+CREATE TABLE t1 (f1 INT, f2 DECIMAL(5,3)) ENGINE=MyISAM;
+INSERT INTO t1 (f1, f2) VALUES (1, 1.789);
+INSERT INTO t1 (f1, f2) VALUES (13, 1.454);
+INSERT INTO t1 (f1, f2) VALUES (10, 1.668);
+
+CREATE TABLE t2 LIKE t1;
+INSERT INTO t2 VALUES (1, 1.789);
+INSERT INTO t2 VALUES (13, 1.454);
+
+set @save_optimizer_switch=@@optimizer_switch;
+SET @@optimizer_switch='default,semijoin=on,materialization=on';
+EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
+SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
+set @@optimizer_switch= @save_optimizer_switch;
+
+DROP TABLE t1, t2;
+
+#
+# BUG#46548 IN-subqueries return 0 rows with materialization=on
+#
+CREATE TABLE t1 (
+  pk int,
+  a varchar(1),
+  b varchar(4),
+  c varchar(4),
+  d varchar(4),
+  PRIMARY KEY (pk)
+);
+INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff');
+
+CREATE TABLE t2 LIKE t1;
+INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff');
+
+set @save_optimizer_switch=@@optimizer_switch;
+SET @@optimizer_switch='default,semijoin=on,materialization=on';
+EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
+SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
+SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0);
+DROP TABLE t1, t2;
+set optimizer_switch=@save_optimizer_switch;
+
+--echo #
+--echo # BUG#50019: Wrong result for IN-subquery with materialization
+--echo #
+create table t1(i int);
+insert into t1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+create table t2(i int);
+insert into t2 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+create table t3(i int);
+insert into t3 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
+set @save_optimizer_switch=@@optimizer_switch;
+set session optimizer_switch='materialization=off,in_to_exists=on';
+select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
+set session optimizer_switch=@save_optimizer_switch;
+drop table t1, t2, t3;
+
+#
+# Test that the contents of the temp table of a materialized subquery is
+# cleaned up between PS re-executions.
+#
+
+create table t0 (a int);
+insert into t0 values (0),(1),(2);
+create table t1 (a int);
+insert into t1 values (0),(1),(2);
+explain select a, a in (select a from t1) from t0;
+select a, a in (select a from t1) from t0;
+prepare s from 'select a, a in (select a from t1) from t0';
+execute s;
+update t1 set a=123;
+execute s;
+drop table t0, t1;
+set optimizer_switch='firstmatch=on';
+
+--echo #
+--echo # MWL#90, review feedback: check what happens when the subquery
+--echo #   looks like candidate for MWL#90 checking at the first glance
+--echo #   but then subselect_hash_sj_engine::init_permanent() discovers
+--echo #   that it's not possible to perform duplicate removal for the 
+--echo #   selected datatypes, and so materialization isn't applicable after
+--echo #   all.
+--echo #
+set @blob_len = 1024;
+set @suffix_len = @blob_len - @prefix_len;
+
+create table t1_1024 (a1 blob(1024), a2 blob(1024));
+create table t2_1024 (b1 blob(1024), b2 blob(1024));
+
+insert into t1_1024 values
+ (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
+insert into t1_1024 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t1_1024 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+
+insert into t2_1024 values
+ (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
+insert into t2_1024 values
+ (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
+insert into t2_1024 values
+ (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
+
+explain select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
+select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
+
+drop table t1_1024, t2_1024;
diff --git a/mysql-test/t/subselect_sj_nonmerged.test b/mysql-test/t/subselect_sj_nonmerged.test
new file mode 100644
index 00000000000..c73bd79777f
--- /dev/null
+++ b/mysql-test/t/subselect_sj_nonmerged.test
@@ -0,0 +1,99 @@
+#
+# Tests for non-merged semi-joins
+#
+--disable_warnings
+drop table if exists t0, t1, t2, t3, t4;
+--enable_warnings
+
+set @save_optimizer_switch=@@optimizer_switch;
+set optimizer_switch='materialization=on';
+
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+
+# Check the case of subquery having agggregates but not having grouping
+
+create table t1 as select * from t0;
+--echo # The following should use full scan on <subquery2> and it must scan 1 row:
+explain select * from t0 where a in (select max(a) from t1);
+select * from t0 where a in (select max(a) from t1);
+
+# Ok, now check the trivial match/no-match/NULL on the left/NULL on the right cases
+insert into t1 values (11);
+select * from t0 where a in (select max(a) from t1);
+delete from t1 where a=11;
+
+insert into t0 values (NULL);
+select * from t0 where a in (select max(a) from t1);
+delete from t0 where a is NULL;
+
+delete from t1;
+select * from t0 where a in (select max(a) from t1);
+
+insert into t0 values (NULL);
+select * from t0 where a in (select max(a) from t1);
+delete from t0 where a is NULL;
+
+drop table t1;
+
+# 
+# Try with join subqueries
+#
+
+create table t1 (a int, b int);
+insert into t1 select a,a from t0;  # 10 rows 
+create table t2 as select * from t1 where a<5;  # 5 rows
+create table t3 as select (A.a + 10*B.a) as a from t0 A, t0 B; # 100 rows
+alter table t3 add primary key(a);
+
+--echo # The following should have do a full scan on <subquery2> and scan 5 rows 
+--echo #   (despite that subquery's join output estimate is 50 rows)
+explain select * from t3 where a in (select max(t2.a) from t1, t2 group by t2.b);
+
+--echo # Compare to this which really will have 50 record combinations:
+explain select * from t3 where a in (select max(t2.a) from t1, t2 group by t2.b, t1.b);
+
+--echo # Outer joins also work:
+explain select * from t3 
+where a in (select max(t2.a) from t1 left join t2 on t1.a=t2.a group by t2.b, t1.b);
+
+#
+# Check if joins on the outer side also work
+#
+create table t4 (a int, b int, filler char(20), unique key(a,b));
+insert into t4 select A.a + 10*B.a, A.a + 10*B.a, 'filler' from t0 A, t0 B; # 100 rows
+explain select * from t0, t4 where 
+  t4.b=t0.a and t4.a in (select max(t2.a) from t1, t2 group by t2.b);
+
+insert into t4 select 100 + (B.a *100 + A.a), 100 + (B.a*100 + A.a), 'filler' from t4 A, t0 B;
+explain select * from t4 where 
+  t4.a in (select max(t2.a) from t1, t2 group by t2.b) and 
+  t4.b in (select max(t2.a) from t1, t2 group by t2.b);
+
+drop table t1,t2,t3,t4;
+
+drop table t0;
+
+--echo #
+--echo # BUG#780359: Crash with get_fanout_with_deps in maria-5.3-mwl90
+--echo #
+CREATE TABLE t1 (f1 int);
+INSERT INTO t1 VALUES (2),(2);
+
+CREATE TABLE t2 (f3 int);
+INSERT INTO t2 VALUES (2),(2);
+
+SELECT *
+FROM t1
+WHERE ( f1 ) IN (
+        SELECT t2.f3
+        FROM t2
+        WHERE t2.f3 = 97
+        AND t2.f3 = 50
+        GROUP BY 1
+);
+
+DROP TABLE t1, t2;
+set optimizer_switch=@save_optimizer_switch;
+