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Merge.
This commit is contained in:
commit
3a0b25bb07
5 changed files with 243 additions and 3 deletions
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@ -1127,3 +1127,105 @@ AND ( 6 ) IN
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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
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DROP TABLE t1, t2;
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set max_join_size= @tmp_906385;
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#
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# mdev-3995: Wrong result for semijoin with materialization
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#
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set @save_optimizer_switch=@@optimizer_switch;
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CREATE TABLE t1 (
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cat_id int(10) unsigned NOT NULL,
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PRIMARY KEY (cat_id)
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES
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(709411),(709412),(709413),(709414),(709416),(709417),(709418),(709419),(709421),(709422),
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(709424),(709425),(709427),(709428),(709429),(709431),(709432),(709433),(709434),(709435),
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(709438),(709439),(709441),(709442),(709443),(709444),(709445),(709446),(709447),(709450),
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(709451),(709454),(709455),(709456),(709457),(709459),(709460),(709461),(709462),(709463),
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(709464),(709465),(709467),(709469),(709470),(709471),(709472),(709473),(709474),(709475),
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(709476),(709477),(709478),(709479),(709480),(709481),(709483),(709484),(709485),(709487),
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(709490),(709491),(709492),(709493),(709494),(709495),(709496),(709497),(709498),(709499),
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(709500),(709501),(709502),(709503),(709504),(709505),(709506),(709507),(709509),(709510),
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(709511),(709512),(709513),(709514),(709515),(709516),(709517),(709518),(709519),(709520),
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(709521),(709522),(709523),(709524),(709525),(709526),(709527),(709528),(709529),(709530),
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(709531),(709532),(709533),(709534),(709535),(709536),(709537),(709538),(709539),(709540),
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(709541),(709542),(709543),(709544),(709545),(709546),(709548),(709549),(709551),(709552),
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(709553),(709555),(709556),(709557),(709558),(709559),(709560),(709561),(709562),(709563),
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(709564),(709565),(709566),(709567),(709568),(709569),(709570),(709571),(709572),(709573),
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(709574),(709575),(709576),(709577),(709578),(709579),(709580),(709581),(709582),(709583),
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(709584),(709585),(709586),(709587),(709588),(709590),(709591),(709592),(709593),(709594),
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(709595),(709596),(709597),(709598),(709600),(709601),(709602),(709603),(709604),(709605),
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(709606),(709608),(709609),(709610),(709611),(709612),(709613),(709614),(709615),(709616),
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(709617),(709618),(709619),(709620),(709621),(709622),(709623),(709624),(709625),(709626),
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(709627),(709628),(709629),(709630),(709631),(709632),(709633),(709634),(709635),(709637),
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(709638),(709639),(709640),(709641),(709642),(709643),(709644),(709645),(709646),(709649),
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(709650),(709651),(709652),(709653),(709654),(709655),(709656),(709657),(709658),(709659);
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CREATE TABLE t2 (
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cat_id int(10) NOT NULL,
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KEY cat_id (cat_id)
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) ENGINE=MyISAM;
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INSERT INTO t2 VALUES
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(708742),(708755),(708759),(708761),(708766),(708769),(708796),(708798),(708824),(708825),
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(708838),(708844),(708861),(708882),(708887),(708889),(708890),(709586),(709626);
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CREATE TABLE t3 (
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sack_id int(10) unsigned NOT NULL,
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kit_id tinyint(3) unsigned NOT NULL DEFAULT '0',
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cat_id int(10) unsigned NOT NULL,
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PRIMARY KEY (sack_id,kit_id,cat_id)
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) ENGINE=MyISAM;
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INSERT INTO t3 VALUES
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(33479,6,708523),(33479,6,708632),(33479,6,709085),(33479,6,709586),(33479,6,709626);
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CREATE TABLE t4 (
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cat_id int(10) unsigned NOT NULL,
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KEY cat_id (cat_id)
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) ENGINE=MyISAM;
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INSERT INTO t4 (cat_id) SELECT cat_id from t2;
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set optimizer_switch='materialization=off';
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EXPLAIN
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t2) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t3 ref PRIMARY PRIMARY 5 const,const 4 Using index
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1 PRIMARY t2 ref cat_id cat_id 4 test.t3.cat_id 2 Using where; Using index; FirstMatch(t3)
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1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t2.cat_id 1 Using where; Using index
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t2) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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count(*)
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2
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set optimizer_switch='materialization=on';
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EXPLAIN
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t4) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t3 ref PRIMARY PRIMARY 5 const,const 4 Using index
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
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1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t3.cat_id 1 Using index
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2 MATERIALIZED t4 index cat_id cat_id 4 NULL 19 Using index
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t4) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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count(*)
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2
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EXPLAIN
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t2) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t3 ref PRIMARY PRIMARY 5 const,const 4 Using index
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 Using where
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1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t3.cat_id 1 Using index
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2 MATERIALIZED t2 index cat_id cat_id 4 NULL 19 Using index
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t2) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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count(*)
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2
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DROP TABLE t1,t2,t3,t4;
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set optimizer_switch=@save_optimizer_switch;
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@ -37,3 +37,105 @@ DROP TABLE t1, t2;
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set max_join_size= @tmp_906385;
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--echo #
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--echo # mdev-3995: Wrong result for semijoin with materialization
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--echo #
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set @save_optimizer_switch=@@optimizer_switch;
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CREATE TABLE t1 (
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cat_id int(10) unsigned NOT NULL,
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PRIMARY KEY (cat_id)
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES
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(709411),(709412),(709413),(709414),(709416),(709417),(709418),(709419),(709421),(709422),
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(709424),(709425),(709427),(709428),(709429),(709431),(709432),(709433),(709434),(709435),
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(709438),(709439),(709441),(709442),(709443),(709444),(709445),(709446),(709447),(709450),
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(709451),(709454),(709455),(709456),(709457),(709459),(709460),(709461),(709462),(709463),
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(709464),(709465),(709467),(709469),(709470),(709471),(709472),(709473),(709474),(709475),
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(709476),(709477),(709478),(709479),(709480),(709481),(709483),(709484),(709485),(709487),
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(709490),(709491),(709492),(709493),(709494),(709495),(709496),(709497),(709498),(709499),
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(709500),(709501),(709502),(709503),(709504),(709505),(709506),(709507),(709509),(709510),
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(709511),(709512),(709513),(709514),(709515),(709516),(709517),(709518),(709519),(709520),
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(709521),(709522),(709523),(709524),(709525),(709526),(709527),(709528),(709529),(709530),
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(709531),(709532),(709533),(709534),(709535),(709536),(709537),(709538),(709539),(709540),
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(709541),(709542),(709543),(709544),(709545),(709546),(709548),(709549),(709551),(709552),
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(709553),(709555),(709556),(709557),(709558),(709559),(709560),(709561),(709562),(709563),
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(709564),(709565),(709566),(709567),(709568),(709569),(709570),(709571),(709572),(709573),
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(709574),(709575),(709576),(709577),(709578),(709579),(709580),(709581),(709582),(709583),
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(709584),(709585),(709586),(709587),(709588),(709590),(709591),(709592),(709593),(709594),
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(709595),(709596),(709597),(709598),(709600),(709601),(709602),(709603),(709604),(709605),
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(709606),(709608),(709609),(709610),(709611),(709612),(709613),(709614),(709615),(709616),
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(709617),(709618),(709619),(709620),(709621),(709622),(709623),(709624),(709625),(709626),
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(709627),(709628),(709629),(709630),(709631),(709632),(709633),(709634),(709635),(709637),
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(709638),(709639),(709640),(709641),(709642),(709643),(709644),(709645),(709646),(709649),
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(709650),(709651),(709652),(709653),(709654),(709655),(709656),(709657),(709658),(709659);
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CREATE TABLE t2 (
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cat_id int(10) NOT NULL,
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KEY cat_id (cat_id)
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) ENGINE=MyISAM;
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INSERT INTO t2 VALUES
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(708742),(708755),(708759),(708761),(708766),(708769),(708796),(708798),(708824),(708825),
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(708838),(708844),(708861),(708882),(708887),(708889),(708890),(709586),(709626);
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CREATE TABLE t3 (
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sack_id int(10) unsigned NOT NULL,
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kit_id tinyint(3) unsigned NOT NULL DEFAULT '0',
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cat_id int(10) unsigned NOT NULL,
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PRIMARY KEY (sack_id,kit_id,cat_id)
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) ENGINE=MyISAM;
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INSERT INTO t3 VALUES
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(33479,6,708523),(33479,6,708632),(33479,6,709085),(33479,6,709586),(33479,6,709626);
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CREATE TABLE t4 (
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cat_id int(10) unsigned NOT NULL,
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KEY cat_id (cat_id)
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) ENGINE=MyISAM;
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INSERT INTO t4 (cat_id) SELECT cat_id from t2;
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set optimizer_switch='materialization=off';
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EXPLAIN
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t2) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t2) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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set optimizer_switch='materialization=on';
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EXPLAIN
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t4) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t4) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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EXPLAIN
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t2) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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SELECT count(*) FROM t1, t3
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WHERE t1.cat_id = t3.cat_id AND
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t3.cat_id IN (SELECT cat_id FROM t2) AND
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t3.sack_id = 33479 AND t3.kit_id = 6;
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DROP TABLE t1,t2,t3,t4;
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set optimizer_switch=@save_optimizer_switch;
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@ -2526,6 +2526,10 @@ void advance_sj_state(JOIN *join, table_map remaining_tables, uint idx,
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/* Mark strategy as used */
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(*strategy)->mark_used();
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pos->sj_strategy= sj_strategy;
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if (sj_strategy == SJ_OPT_MATERIALIZE)
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join->sjm_lookup_tables |= handled_fanout;
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else
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join->sjm_lookup_tables &= ~handled_fanout;
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*current_read_time= read_time;
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*current_record_count= rec_count;
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join->cur_dups_producing_tables &= ~handled_fanout;
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@ -3050,6 +3054,13 @@ void restore_prev_sj_state(const table_map remaining_tables,
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const JOIN_TAB *tab, uint idx)
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{
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TABLE_LIST *emb_sj_nest;
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if (tab->emb_sj_nest)
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{
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table_map subq_tables= tab->emb_sj_nest->sj_inner_tables;
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tab->join->sjm_lookup_tables &= ~subq_tables;
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}
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if ((emb_sj_nest= tab->emb_sj_nest))
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{
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/* If we're removing the last SJ-inner table, remove the sj-nest */
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@ -3227,6 +3238,7 @@ void fix_semijoin_strategies_for_picked_join_order(JOIN *join)
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uint tablenr;
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table_map remaining_tables= 0;
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table_map handled_tabs= 0;
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join->sjm_lookup_tables= 0;
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for (tablenr= table_count - 1 ; tablenr != join->const_tables - 1; tablenr--)
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{
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POSITION *pos= join->best_positions + tablenr;
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@ -3252,6 +3264,7 @@ void fix_semijoin_strategies_for_picked_join_order(JOIN *join)
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first= tablenr - sjm->tables + 1;
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join->best_positions[first].n_sj_tables= sjm->tables;
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join->best_positions[first].sj_strategy= SJ_OPT_MATERIALIZE;
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join->sjm_lookup_tables|= s->table->map;
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}
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else if (pos->sj_strategy == SJ_OPT_MATERIALIZE_SCAN)
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{
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|
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|
@ -4924,6 +4924,7 @@ static void optimize_keyuse(JOIN *join, DYNAMIC_ARRAY *keyuse_array)
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}
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/**
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Discover the indexes that can be used for GROUP BY or DISTINCT queries.
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|
@ -5166,6 +5167,8 @@ best_access_path(JOIN *join,
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2. we won't get two ref-or-null's
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*/
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if (!(remaining_tables & keyuse->used_tables) &&
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s->access_from_tables_is_allowed(keyuse->used_tables,
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join->sjm_lookup_tables) &&
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!(ref_or_null_part && (keyuse->optimize &
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KEY_OPTIMIZE_REF_OR_NULL)))
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{
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|
@ -7655,7 +7658,9 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j,
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*/
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do
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{
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if (!(~used_tables & keyuse->used_tables))
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if (!(~used_tables & keyuse->used_tables) &&
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j->access_from_tables_is_allowed(keyuse->used_tables,
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join->sjm_lookup_tables))
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{
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if (are_tables_local(j, keyuse->val->used_tables()))
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{
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|
@ -7723,7 +7728,9 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j,
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uint i;
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for (i=0 ; i < keyparts ; keyuse++,i++)
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{
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while (((~used_tables) & keyuse->used_tables) ||
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while (((~used_tables) & keyuse->used_tables) ||
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!j->access_from_tables_is_allowed(keyuse->used_tables,
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join->sjm_lookup_tables) ||
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keyuse->keypart == NO_KEYPART ||
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(keyuse->keypart !=
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(is_hash_join_key_no(key) ?
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|
@ -10183,7 +10190,6 @@ bool JOIN_TAB::preread_init()
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}
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/**
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Build a TABLE_REF structure for index lookup in the temporary table
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|
|
|
@ -515,6 +515,16 @@ typedef struct st_join_table {
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bool preread_init();
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bool is_sjm_nest() { return test(bush_children); }
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bool access_from_tables_is_allowed(table_map used_tables,
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table_map sjm_lookup_tables)
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{
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table_map used_sjm_lookup_tables= used_tables & sjm_lookup_tables;
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return !used_sjm_lookup_tables ||
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(emb_sj_nest &&
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!(used_sjm_lookup_tables & ~emb_sj_nest->sj_inner_tables));
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}
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} JOIN_TAB;
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|
@ -947,6 +957,11 @@ public:
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|||
*/
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bool resume_nested_loop;
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table_map const_table_map;
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/**
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Bitmap of semijoin tables that the current partial plan decided
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||||
to materialize and access by lookups
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*/
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table_map sjm_lookup_tables;
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/*
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||||
Constant tables for which we have found a row (as opposed to those for
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which we didn't).
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|
@ -1268,6 +1283,8 @@ public:
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outer_ref_cond= pseudo_bits_cond= NULL;
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in_to_exists_where= NULL;
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||||
in_to_exists_having= NULL;
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emb_sjm_nest= NULL;
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sjm_lookup_tables= 0;
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||||
}
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||||
|
||||
int prepare(Item ***rref_pointer_array, TABLE_LIST *tables, uint wind_num,
|
||||
|
|
Loading…
Add table
Reference in a new issue