Merge.

1 files changed, 102 insertions, 0 deletions

diff --git a/mysql-test/r/subselect_sj2_mat.result b/mysql-test/r/subselect_sj2_mat.result
index 4bce431a771..f4cf874934d 100644
--- a/mysql-test/r/subselect_sj2_mat.result
+++ b/mysql-test/r/subselect_sj2_mat.result
@@ -1127,3 +1127,105 @@ AND ( 6 ) IN
 ERROR 42000: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay
 DROP TABLE t1, t2;
 set max_join_size= @tmp_906385;
+# 
+# mdev-3995: Wrong result for semijoin with materialization  
+# 
+set @save_optimizer_switch=@@optimizer_switch;
+CREATE TABLE t1 (
+cat_id int(10) unsigned NOT NULL,
+PRIMARY KEY (cat_id)
+) ENGINE=MyISAM;
+INSERT INTO t1 VALUES
+(709411),(709412),(709413),(709414),(709416),(709417),(709418),(709419),(709421),(709422),
+(709424),(709425),(709427),(709428),(709429),(709431),(709432),(709433),(709434),(709435),
+(709438),(709439),(709441),(709442),(709443),(709444),(709445),(709446),(709447),(709450),
+(709451),(709454),(709455),(709456),(709457),(709459),(709460),(709461),(709462),(709463),
+(709464),(709465),(709467),(709469),(709470),(709471),(709472),(709473),(709474),(709475),
+(709476),(709477),(709478),(709479),(709480),(709481),(709483),(709484),(709485),(709487),
+(709490),(709491),(709492),(709493),(709494),(709495),(709496),(709497),(709498),(709499),
+(709500),(709501),(709502),(709503),(709504),(709505),(709506),(709507),(709509),(709510),
+(709511),(709512),(709513),(709514),(709515),(709516),(709517),(709518),(709519),(709520),
+(709521),(709522),(709523),(709524),(709525),(709526),(709527),(709528),(709529),(709530),
+(709531),(709532),(709533),(709534),(709535),(709536),(709537),(709538),(709539),(709540),
+(709541),(709542),(709543),(709544),(709545),(709546),(709548),(709549),(709551),(709552),
+(709553),(709555),(709556),(709557),(709558),(709559),(709560),(709561),(709562),(709563),
+(709564),(709565),(709566),(709567),(709568),(709569),(709570),(709571),(709572),(709573),
+(709574),(709575),(709576),(709577),(709578),(709579),(709580),(709581),(709582),(709583),
+(709584),(709585),(709586),(709587),(709588),(709590),(709591),(709592),(709593),(709594),
+(709595),(709596),(709597),(709598),(709600),(709601),(709602),(709603),(709604),(709605),
+(709606),(709608),(709609),(709610),(709611),(709612),(709613),(709614),(709615),(709616),
+(709617),(709618),(709619),(709620),(709621),(709622),(709623),(709624),(709625),(709626),
+(709627),(709628),(709629),(709630),(709631),(709632),(709633),(709634),(709635),(709637),
+(709638),(709639),(709640),(709641),(709642),(709643),(709644),(709645),(709646),(709649),
+(709650),(709651),(709652),(709653),(709654),(709655),(709656),(709657),(709658),(709659);
+CREATE TABLE t2 (
+cat_id int(10) NOT NULL,
+KEY cat_id (cat_id)
+) ENGINE=MyISAM;
+INSERT INTO t2 VALUES
+(708742),(708755),(708759),(708761),(708766),(708769),(708796),(708798),(708824),(708825),
+(708838),(708844),(708861),(708882),(708887),(708889),(708890),(709586),(709626);
+CREATE TABLE t3 (
+sack_id int(10) unsigned NOT NULL,
+kit_id tinyint(3) unsigned NOT NULL DEFAULT '0',
+cat_id int(10) unsigned NOT NULL,
+PRIMARY KEY (sack_id,kit_id,cat_id)
+) ENGINE=MyISAM;
+INSERT INTO t3 VALUES
+(33479,6,708523),(33479,6,708632),(33479,6,709085),(33479,6,709586),(33479,6,709626);
+CREATE TABLE t4 (
+cat_id int(10) unsigned NOT NULL,
+KEY cat_id (cat_id)
+) ENGINE=MyISAM;
+INSERT INTO t4 (cat_id) SELECT cat_id from t2;
+set optimizer_switch='materialization=off';
+EXPLAIN
+SELECT count(*) FROM t1, t3 
+WHERE  t1.cat_id = t3.cat_id AND 
+t3.cat_id IN (SELECT cat_id FROM t2) AND 
+t3.sack_id = 33479 AND t3.kit_id = 6;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t3	ref	PRIMARY	PRIMARY	5	const,const	4	Using index
+1	PRIMARY	t2	ref	cat_id	cat_id	4	test.t3.cat_id	2	Using where; Using index; FirstMatch(t3)
+1	PRIMARY	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.cat_id	1	Using where; Using index
+SELECT count(*) FROM t1, t3 
+WHERE  t1.cat_id = t3.cat_id AND 
+t3.cat_id IN (SELECT cat_id FROM t2) AND 
+t3.sack_id = 33479 AND t3.kit_id = 6;
+count(*)
+2
+set optimizer_switch='materialization=on';
+EXPLAIN
+SELECT count(*) FROM t1, t3 
+WHERE  t1.cat_id = t3.cat_id AND 
+t3.cat_id IN (SELECT cat_id FROM t4) AND 
+t3.sack_id = 33479 AND t3.kit_id = 6;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t3	ref	PRIMARY	PRIMARY	5	const,const	4	Using index
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	4	func	1	
+1	PRIMARY	t1	eq_ref	PRIMARY	PRIMARY	4	test.t3.cat_id	1	Using index
+2	MATERIALIZED	t4	index	cat_id	cat_id	4	NULL	19	Using index
+SELECT count(*) FROM t1, t3 
+WHERE  t1.cat_id = t3.cat_id AND 
+t3.cat_id IN (SELECT cat_id FROM t4) AND 
+t3.sack_id = 33479 AND t3.kit_id = 6;
+count(*)
+2
+EXPLAIN
+SELECT count(*) FROM t1, t3 
+WHERE  t1.cat_id = t3.cat_id AND 
+t3.cat_id IN (SELECT cat_id FROM t2) AND 
+t3.sack_id = 33479 AND t3.kit_id = 6;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t3	ref	PRIMARY	PRIMARY	5	const,const	4	Using index
+1	PRIMARY	<subquery2>	eq_ref	distinct_key	distinct_key	4	func	1	Using where
+1	PRIMARY	t1	eq_ref	PRIMARY	PRIMARY	4	test.t3.cat_id	1	Using index
+2	MATERIALIZED	t2	index	cat_id	cat_id	4	NULL	19	Using index
+SELECT count(*) FROM t1, t3 
+WHERE  t1.cat_id = t3.cat_id AND 
+t3.cat_id IN (SELECT cat_id FROM t2) AND 
+t3.sack_id = 33479 AND t3.kit_id = 6;
+count(*)
+2
+DROP TABLE t1,t2,t3,t4;
+set optimizer_switch=@save_optimizer_switch;