# # Run subselect_sj2.test with subquery materialization. # set optimizer_switch='materialization=on'; set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on'; --source t/subselect_sj2.test set optimizer_switch=default; select @@optimizer_switch like '%materialization=on%'; --echo # --echo # BUG#906385: EXPLAIN EXTENDED crashes in TABLE_LIST::print with limited max_join_size --echo # CREATE TABLE t1 ( a INT ); CREATE TABLE t2 ( b INT ); INSERT INTO t1 VALUES (1),(2); INSERT INTO t2 VALUES (1),(2),(3),(4),(5), (6),(7),(8),(9),(10), (11),(12),(13),(14),(15), (16),(17),(18),(19),(20); set @tmp_906385=@@max_join_size; SET max_join_size = 80; --error ER_TOO_BIG_SELECT EXPLAIN EXTENDED SELECT COUNT(*) FROM t1 WHERE a IN ( SELECT b FROM t2 GROUP BY b ) AND ( 6 ) IN ( SELECT MIN( t2.b ) FROM t2 alias1, t2 ); DROP TABLE t1, t2; set max_join_size= @tmp_906385; --echo # --echo # mdev-3995: Wrong result for semijoin with materialization --echo # 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; 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; 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; 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; 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; 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; DROP TABLE t1,t2,t3,t4; set optimizer_switch=@save_optimizer_switch; --echo # --echo # mdev-3913: LEFT JOIN with materialized multi-table IN subquery in WHERE --echo # set @save_optimizer_switch=@@optimizer_switch; CREATE TABLE t1 (a1 char(1), b1 char(1), index idx(b1,a1)); INSERT INTO t1 VALUES ('f','c'),('d','m'),('g','y'); INSERT INTO t1 VALUES ('f','c'),('d','m'),('g','y'); CREATE TABLE t2 (a2 char(1), b2 char(1)); INSERT INTO t2 VALUES ('y','y'),('y','y'),('w','w'); CREATE TABLE t3 (a3 int); INSERT INTO t3 VALUES (8),(6); CREATE TABLE t4 (a4 char(1), b4 char(1)); INSERT INTO t4 VALUES ('y','y'),('y','y'),('w','w'); set optimizer_switch='materialization=off'; EXPLAIN EXTENDED SELECT * FROM t1 LEFT JOIN t2 ON ( b1 = a2 ) WHERE ( b1, b1 ) IN ( SELECT a4, b4 FROM t3, t4); SELECT * FROM t1 LEFT JOIN t2 ON ( b1 = a2 ) WHERE ( b1, b1 ) IN ( SELECT a4, b4 FROM t3, t4); set optimizer_switch='materialization=on'; EXPLAIN EXTENDED SELECT * FROM t1 LEFT JOIN t2 ON ( b1 = a2 ) WHERE ( b1, b1 ) IN ( SELECT a4, b4 FROM t3, t4); SELECT * FROM t1 LEFT JOIN t2 ON ( b1 = a2 ) WHERE ( b1, b1 ) IN ( SELECT a4, b4 FROM t3, t4); DROP TABLE t1,t2,t3,t4; set optimizer_switch=@save_optimizer_switch; --echo # --echo # mdev-4172: LEFT JOIN with materialized multi-table IN subquery in WHERE --echo # and OR in ON condition --echo # set @save_optimizer_switch=@@optimizer_switch; CREATE TABLE t1 (a1 int, c1 varchar(1)); INSERT t1 VALUES (7,'v'), (3,'y'); CREATE TABLE t2 (c2 varchar(1)); INSERT INTO t2 VALUES ('y'), ('y'); CREATE TABLE t3 (c3 varchar(1)); INSERT INTO t3 VALUES ('j'), ('v'), ('c'), ('m'), ('d'), ('d'), ('y'), ('t'), ('d'), ('s'); CREATE TABLE t4 (a4 int, c4 varchar(1)); INSERT INTO t4 SELECT * FROM t1; set optimizer_switch='materialization=off'; EXPLAIN EXTENDED SELECT * FROM t1 LEFT JOIN t2 ON (c2 = c1 OR c1 > 'z') WHERE c1 IN ( SELECT c4 FROM t3,t4 WHERE c3 = c4); SELECT * FROM t1 LEFT JOIN t2 ON (c2 = c1 OR c1 > 'z') WHERE c1 IN ( SELECT c4 FROM t3,t4 WHERE c3 = c4); set optimizer_switch='materialization=on'; EXPLAIN EXTENDED SELECT * FROM t1 LEFT JOIN t2 ON (c2 = c1 OR c1 > 'z') WHERE c1 IN ( SELECT c4 FROM t3,t4 WHERE c3 = c4); SELECT * FROM t1 LEFT JOIN t2 ON (c2 = c1 OR c1 > 'z') WHERE c1 IN ( SELECT c4 FROM t3,t4 WHERE c3 = c4); DROP TABLE t1,t2,t3,t4; set optimizer_switch=@save_optimizer_switch; --echo # --echo # mdev-4177: materialization of a subquery whose WHERE condition is OR --echo # formula with two disjucts such that the second one is always false --echo # set @save_optimizer_switch=@@optimizer_switch; set @save_join_cache_level=@@join_cache_level; CREATE TABLE t1 (i1 int) ENGINE=MyISAM; INSERT INTO t1 VALUES (1), (7), (4), (8), (4); CREATE TABLE t2 (i2 int) ENGINE=MyISAM; INSERT INTO t2 VALUES (7), (5); CREATE TABLE t3 (i3 int) ENGINE=MyISAM; INSERT INTO t3 VALUES (7), (2), (9); set join_cache_level=3; set optimizer_switch='materialization=off,semijoin=off'; EXPLAIN EXTENDED SELECT * FROM t1 WHERE i1 IN (SELECT i3 FROM t2, t3 WHERE i3 = i2 OR 1=2); SELECT * FROM t1 WHERE i1 IN (SELECT i3 FROM t2, t3 WHERE i3 = i2 OR 1=2); set optimizer_switch='materialization=on,semijoin=on'; EXPLAIN EXTENDED SELECT * FROM t1 WHERE i1 IN (SELECT i3 FROM t2, t3 WHERE i3 = i2 OR 1=2); SELECT * FROM t1 WHERE i1 IN (SELECT i3 FROM t2, t3 WHERE i3 = i2 OR 1=2); EXPLAIN EXTENDED SELECT * FROM t1 WHERE i1 IN (SELECT i3 FROM t2, t3 WHERE i3 > 0 AND i3 = i2 OR 1=2); SELECT * FROM t1 WHERE i1 IN (SELECT i3 FROM t2, t3 WHERE i3 > 0 AND i3 = i2 OR 1=2); SELECT * FROM t1 WHERE i1 IN (SELECT i3 FROM t2, t3 WHERE i3 > 7 AND i3 = i2 OR 1=2); DROP TABLE t1,t2,t3; set join_cache_level= @save_join_cache_level; set optimizer_switch=@save_optimizer_switch;