drop table if exists t1, t2, t3, t4; set @subselect2_test_tmp=@@optimizer_switch; set optimizer_switch='semijoin=on,firstmatch=on,mrr=on,mrr_sort_keys=on,index_condition_pushdown=on'; CREATE TABLE t1 ( DOCID VARCHAR(32)BINARY NOT NULL , UUID VARCHAR(32)BINARY NOT NULL , MIMETYPE VARCHAR(80)BINARY , CONTENTDATA LONGBLOB , CONTENTSIZE INTEGER , VERSIONID INTEGER , REPID VARCHAR(32)BINARY , MODIFIED TIMESTAMP , MODIFIER VARCHAR(255)BINARY , ORIGINATOR INTEGER , PRIMARY KEY ( DOCID ) ) ENGINE=InnoDB ; INSERT IGNORE INTO t1 (DOCID) VALUES ("1"), ("2"); Warnings: Warning 1364 Field 'UUID' doesn't have a default value CREATE TABLE t2 ( DOCID VARCHAR(32)BINARY NOT NULL , DOCNAME VARCHAR(255)BINARY NOT NULL , DOCTYPEID VARCHAR(32)BINARY NOT NULL , FOLDERID VARCHAR(32)BINARY NOT NULL , AUTHOR VARCHAR(255)BINARY , CREATED TIMESTAMP NOT NULL , TITLE VARCHAR(255)BINARY , SUBTITLE VARCHAR(255)BINARY , DOCABSTRACT LONGBLOB , PUBLISHDATE TIMESTAMP , EXPIRATIONDATE TIMESTAMP , LOCKEDBY VARCHAR(80)BINARY , STATUS VARCHAR(80)BINARY , PARENTDOCID VARCHAR(32)BINARY , REPID VARCHAR(32)BINARY , MODIFIED TIMESTAMP NOT NULL , MODIFIER VARCHAR(255)BINARY NOT NULL , PUBLISHSTATUS INTEGER , ORIGINATOR INTEGER , PRIMARY KEY ( DOCID ) ) ENGINE=InnoDB ; CREATE INDEX DDOCTYPEID_IDX ON t2 (DOCTYPEID); CREATE INDEX DFOLDERID_IDX ON t2 (FOLDERID); CREATE TABLE t3 ( FOLDERID VARCHAR(32)BINARY NOT NULL , FOLDERNAME VARCHAR(255)BINARY NOT NULL , CREATOR VARCHAR(255)BINARY , CREATED TIMESTAMP NOT NULL , DESCRIPTION VARCHAR(255)BINARY , FOLDERTYPE INTEGER NOT NULL , MODIFIED TIMESTAMP , MODIFIER VARCHAR(255)BINARY , FOLDERSIZE INTEGER NOT NULL , PARENTID VARCHAR(32)BINARY , REPID VARCHAR(32)BINARY , ORIGINATOR INTEGER , PRIMARY KEY ( FOLDERID ) ) ENGINE=InnoDB; CREATE INDEX FFOLDERID_IDX ON t3 (FOLDERID); CREATE INDEX CMFLDRPARNT_IDX ON t3 (PARENTID); CREATE TABLE t4 ( DOCTYPEID VARCHAR(32)BINARY NOT NULL , DOCTYPENAME VARCHAR(80)BINARY NOT NULL , DESCRIPTION VARCHAR(255)BINARY , EXTNDATA LONGBLOB , MODIFIED TIMESTAMP , MODIFIER VARCHAR(255)BINARY , ORIGINATOR INTEGER , PRIMARY KEY ( DOCTYPEID ) ) ENGINE=InnoDB; INSERT INTO t2 VALUES("c373e9f59cf15a6c3e57444553544200", "c373e9f59cf15a6c3e57444553544200", "340d243d45f111d497b00010a4ef934d", "2f6161e879db43c1a5b82c21ddc49089", NULL, "2003-06-06 07:48:42", NULL, NULL, NULL, "2003-06-06 07:48:42", "2003-06-06 07:48:42", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-06 07:48:42", "admin", "0", NULL); INSERT INTO t2 VALUES("c373e9f5a472f43ba45e444553544200", "c373e9f5a472f43ba45e444553544200", "340d243d45f111d497b00010a4ef934d", "2f6161e879db43c1a5b82c21ddc49089", NULL, "2003-06-07 18:50:12", NULL, NULL, NULL, "2003-06-07 18:50:12", "2003-06-07 18:50:12", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-07 18:50:12", "admin", "0", NULL); INSERT INTO t2 VALUES("c373e9f5a4a0f56014eb444553544200", "c373e9f5a4a0f56014eb444553544200", "340d243d45f111d497b00010a4ef934d", "2f6161e879db43c1a5b82c21ddc49089", NULL, "2003-06-07 19:39:26", NULL, NULL, NULL, "2003-06-07 19:39:26", "2003-06-07 19:39:26", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-07 19:39:26", "admin", "0", NULL); INSERT INTO t2 VALUES("c373e9f5a4a0f8fa4a86444553544200", "c373e9f5a4a0f8fa4a86444553544200", "340d243d45f111d497b00010a4ef934d", "2f6161e879db43c1a5b82c21ddc49089", NULL, "2003-06-07 19:43:05", NULL, NULL, NULL, "2003-06-07 19:43:05", "2003-06-07 19:43:05", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-07 19:43:05", "admin", "0", NULL); INSERT INTO t2 VALUES("c373e9f5ac7b537205ce444553544200", "c373e9f5ac7b537205ce444553544200", "340d243d45f111d497b00010a4ef934d", "2f6161e879db43c1a5b82c21ddc49089", NULL, "2003-06-09 08:15:24", NULL, NULL, NULL, "2003-06-09 08:15:24", "2003-06-09 08:15:24", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-09 08:15:24", "admin", "0", NULL); INSERT INTO t2 VALUES("c373e9f5ad0792012454444553544200", "c373e9f5ad0792012454444553544200", "340d243d45f111d497b00010a4ef934d", "2f6161e879db43c1a5b82c21ddc49089", NULL, "2003-06-09 10:51:44", NULL, NULL, NULL, "2003-06-09 10:51:44", "2003-06-09 10:51:44", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-09 10:51:44", "admin", "0", NULL); INSERT INTO t2 VALUES("c373e9f5ad079821ef34444553544200", "First Discussion", "c373e9f5ad079174ff17444553544200", "c373e9f5ad0796c0eca4444553544200", "Goldilocks", "2003-06-09 11:16:50", "Title: First Discussion", NULL, NULL, "2003-06-09 10:51:26", "2003-06-09 10:51:26", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-09 11:16:50", "admin", "0", NULL); INSERT INTO t2 VALUES("c373e9f5ad07993f3859444553544200", "Last Discussion", "c373e9f5ad079174ff17444553544200", "c373e9f5ad0796c0eca4444553544200", "Goldilocks", "2003-06-09 11:21:06", "Title: Last Discussion", NULL, "Setting new abstract and keeping doc checked out", "2003-06-09 10:51:26", "2003-06-09 10:51:26", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-09 11:21:06", "admin", "0", NULL); INSERT INTO t2 VALUES("c373e9f5ad079a3219c4444553544200", "testdoclayout", "340d243c45f111d497b00010a4ef934d", "c373e9f5ad0796c0eca4444553544200", "Goldilocks", "2003-06-09 11:25:31", "Title: Test doc layout", "Subtitle: test doc layout", NULL, "2003-06-09 10:51:27", "2003-06-09 10:51:27", NULL, NULL, NULL, "03eea05112b845949f3fd03278b5fe43", "2003-06-09 11:25:31", "admin", "0", NULL); INSERT INTO t3 VALUES("0c9aab05b15048c59bc35c8461507deb", "System", "System", "2003-06-05 16:30:00", "The system content repository folder.", "3", "2003-06-05 16:30:00", "System", "0", NULL, "9c9aab05b15048c59bc35c8461507deb", "1"); INSERT INTO t3 VALUES("2f6161e879db43c1a5b82c21ddc49089", "Default", "System", "2003-06-09 10:52:02", "The default content repository folder.", "3", "2003-06-05 16:30:00", "System", "0", NULL, "03eea05112b845949f3fd03278b5fe43", "1"); INSERT INTO t3 VALUES("c373e9f5ad0791724315444553544200", "AddDocumentTest", "admin", "2003-06-09 10:51:25", "Movie Reviews", "0", "2003-06-09 10:51:25", "admin", "0", "2f6161e879db43c1a5b82c21ddc49089", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad07919e1963444553544200", "NewDestDirectory", "admin", "2003-06-09 10:51:28", "Adding new directory", "128", "2003-06-09 10:51:28", "admin", "0", "2f6161e879db43c1a5b82c21ddc49089", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad07919fe525444553544200", "SubDestDirectory", "admin", "2003-06-09 10:51:28", "Adding new directory", "128", "2003-06-09 10:51:28", "admin", "0", "c373e9f5ad07919e1963444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791a0dab5444553544200", "Level1", "admin", "2003-06-09 10:51:29", NULL, "0", "2003-06-09 10:51:29", "admin", "0", "2f6161e879db43c1a5b82c21ddc49089", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791a14669444553544200", "Level2", "admin", "2003-06-09 10:51:29", NULL, "0", "2003-06-09 10:51:29", "admin", "0", "c373e9f5ad0791a0dab5444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791a23c0e444553544200", "Level3", "admin", "2003-06-09 10:51:29", NULL, "0", "2003-06-09 10:51:29", "admin", "0", "c373e9f5ad0791a14669444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791a6b11f444553544200", "Dir1", "admin", "2003-06-09 10:51:30", NULL, "0", "2003-06-09 10:51:30", "admin", "0", "2f6161e879db43c1a5b82c21ddc49089", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791a897d6444553544200", "Dir2", "admin", "2003-06-09 10:51:30", NULL, "0", "2003-06-09 10:51:30", "admin", "0", "c373e9f5ad0791a6b11f444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791a9a063444553544200", "NewDestDirectory", "admin", "2003-06-09 10:51:31", NULL, "0", "2003-06-09 10:51:31", "admin", "0", "c373e9f5ad0791a897d6444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791aa73e3444553544200", "LevelA", "admin", "2003-06-09 10:51:31", NULL, "0", "2003-06-09 10:51:31", "admin", "0", "c373e9f5ad0791a0dab5444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791ab034b444553544200", "LevelB", "admin", "2003-06-09 10:51:31", NULL, "0", "2003-06-09 10:51:31", "admin", "0", "c373e9f5ad0791aa73e3444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791ac7311444553544200", "LevelC", "admin", "2003-06-09 10:51:32", NULL, "0", "2003-06-09 10:51:32", "admin", "0", "c373e9f5ad0791ab034b444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791ad66cf444553544200", "test2", "admin", "2003-06-09 10:51:32", NULL, "0", "2003-06-09 10:51:32", "admin", "0", "c373e9f5ad0791724315444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791aebd87444553544200", "test3", "admin", "2003-06-09 10:51:33", NULL, "0", "2003-06-09 10:51:33", "admin", "0", "c373e9f5ad0791ad66cf444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0791dbaac4444553544200", "Special Café Folder", "admin", "2003-06-09 10:51:43", "test folder names with special chars", "0", "2003-06-09 10:51:43", "admin", "0", "2f6161e879db43c1a5b82c21ddc49089", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0796bf913f444553544200", "CopiedFolder", "admin", "2003-06-09 11:09:05", "Movie Reviews", "0", "2003-06-09 11:09:05", "admin", "0", "c373e9f5ad0791a23c0e444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0796c0eca4444553544200", "Movie Reviews", "admin", "2003-06-09 11:09:13", "Movie Reviews", "0", "2003-06-09 11:09:13", "admin", "33", "c373e9f5ad0796bf913f444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad0796d9b895444553544200", "NewBookFolder", "admin", "2003-06-09 11:12:41", "NewBooks - folder", "0", "2003-06-09 11:12:41", "admin", "0", "c373e9f5ad0796c0eca4444553544200", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t3 VALUES("c373e9f5ad079b4c9355444553544200", "CopiedFolder", "admin", "2003-06-09 11:26:34", "Movie Reviews", "0", "2003-06-09 11:26:34", "admin", "0", "2f6161e879db43c1a5b82c21ddc49089", "03eea05112b845949f3fd03278b5fe43", NULL); INSERT INTO t4 VALUES("340d243c45f111d497b00010a4ef934d", "Document Layout", "The system Document Layouts Document Type", NULL, "2003-06-05 16:30:00", "System", "1"); INSERT INTO t4 VALUES("340d243d45f111d497b00010a4ef934d", "Default", "The default system Document Type", NULL, "2003-06-05 16:30:00", "System", "1"); INSERT INTO t4 VALUES("4d09dd60850711d4998a204c4f4f5020", "__SystemResourceType", "The type for all the uploaded resources", NULL, "2003-06-05 16:30:00", "System", "1"); INSERT INTO t4 VALUES("91d4d595478211d497b40010a4ef934d", "__PmcSystemDefaultType", "The type for all the default available fields", NULL, "2003-06-05 16:30:00", "System", "1"); INSERT INTO t4 VALUES("c373e9f59cf15a59b08a444553544200", "NoFieldDocType", "plain doc type", NULL, "2003-06-06 07:48:40", "admin", NULL); INSERT INTO t4 VALUES("c373e9f59cf15a5c6a99444553544200", "Movie Review", "This doc type is for movie reviews", "\r\n\r\n", "2003-06-06 07:48:40", "admin", NULL); INSERT INTO t4 VALUES("c373e9f59cf15a6116a5444553544200", "Special DocÃu20A4u20A4u0113ééøÉu016BType", "test special chars xxxé in doc type", NULL, "2003-06-06 07:48:41", "admin", NULL); INSERT INTO t4 VALUES("c373e9f59cf15a695d47444553544200", "Movie", NULL, NULL, "2003-06-06 07:48:41", "admin", NULL); INSERT INTO t4 VALUES("c373e9f5ad079174ff17444553544200", "Discussion", NULL, NULL, "2003-06-09 10:51:25", "admin", NULL); INSERT INTO t4 VALUES("c373e9f5ad0791da7e2b444553544200", "Books", "list of recommended books", "\r\n\r\n", "2003-06-09 10:51:40", "admin", NULL); ALTER TABLE t2 ADD FOREIGN KEY FK_DCMNTS_DCTYPES ( DOCTYPEID) REFERENCES t4 (DOCTYPEID ); ALTER TABLE t2 ADD FOREIGN KEY FK_DCMNTS_FLDRS ( FOLDERID) REFERENCES t3 (FOLDERID ); ALTER TABLE t3 ADD FOREIGN KEY FK_FLDRS_PRNTID ( PARENTID) REFERENCES t3 (FOLDERID ); SELECT t2.*, t4.DOCTYPENAME, t1.CONTENTSIZE,t1.MIMETYPE FROM t2 INNER JOIN t4 ON t2.DOCTYPEID = t4.DOCTYPEID LEFT OUTER JOIN t1 ON t2.DOCID = t1.DOCID WHERE t2.FOLDERID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID='2f6161e879db43c1a5b82c21ddc49089' AND t3.FOLDERNAME = 'Level1') AND t3.FOLDERNAME = 'Level2') AND t3.FOLDERNAME = 'Level3') AND t3.FOLDERNAME = 'CopiedFolder') AND t3.FOLDERNAME = 'Movie Reviews') AND t2.DOCNAME = 'Last Discussion'; DOCID DOCNAME DOCTYPEID FOLDERID AUTHOR CREATED TITLE SUBTITLE DOCABSTRACT PUBLISHDATE EXPIRATIONDATE LOCKEDBY STATUS PARENTDOCID REPID MODIFIED MODIFIER PUBLISHSTATUS ORIGINATOR DOCTYPENAME CONTENTSIZE MIMETYPE c373e9f5ad07993f3859444553544200 Last Discussion c373e9f5ad079174ff17444553544200 c373e9f5ad0796c0eca4444553544200 Goldilocks 2003-06-09 11:21:06 Title: Last Discussion NULL Setting new abstract and keeping doc checked out 2003-06-09 10:51:26 2003-06-09 10:51:26 NULL NULL NULL 03eea05112b845949f3fd03278b5fe43 2003-06-09 11:21:06 admin 0 NULL Discussion NULL NULL EXPLAIN SELECT t2.*, t4.DOCTYPENAME, t1.CONTENTSIZE,t1.MIMETYPE FROM t2 INNER JOIN t4 ON t2.DOCTYPEID = t4.DOCTYPEID LEFT OUTER JOIN t1 ON t2.DOCID = t1.DOCID WHERE t2.FOLDERID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID='2f6161e879db43c1a5b82c21ddc49089' AND t3.FOLDERNAME = 'Level1') AND t3.FOLDERNAME = 'Level2') AND t3.FOLDERNAME = 'Level3') AND t3.FOLDERNAME = 'CopiedFolder') AND t3.FOLDERNAME = 'Movie Reviews') AND t2.DOCNAME = 'Last Discussion'; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t2 ALL DDOCTYPEID_IDX,DFOLDERID_IDX NULL NULL NULL 9 Using where 1 PRIMARY t1 eq_ref PRIMARY PRIMARY 34 test.t2.DOCID 1 1 PRIMARY t4 eq_ref PRIMARY PRIMARY 34 test.t2.DOCTYPEID 1 1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t2.FOLDERID 1 Using where 1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where 1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where 1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where 1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where drop table t1, t2, t3, t4; CREATE TABLE t1 (a int(10) , PRIMARY KEY (a)) Engine=InnoDB; INSERT INTO t1 VALUES (1),(2); CREATE TABLE t2 (a int(10), PRIMARY KEY (a)) Engine=InnoDB; INSERT INTO t2 VALUES (1); CREATE TABLE t3 (a int(10), b int(10), c int(10), PRIMARY KEY (a)) Engine=InnoDB; INSERT INTO t3 VALUES (1,2,1); SELECT t1.* FROM t1 WHERE (SELECT COUNT(*) FROM t3,t2 WHERE t3.c=t2.a and t2.a='1' AND t1.a=t3.b) > 0; a 2 DROP TABLE t1,t2,t3; # # Bug #902356: DISTINCT in materialized subquery # CREATE TABLE t1 (pk int PRIMARY KEY, a int, KEY(a)) ENGINE=InnoDB; INSERT INTO t1 VALUES (0, 4), (8, 6); CREATE TABLE t2 (pk int PRIMARY KEY, a int, KEY(a)) ENGINE=InnoDB; INSERT INTO t2 VALUES (0, 4), (8, 6); CREATE TABLE t3 (b INT, KEY(b)); INSERT INTO t3 VALUES (7), (0), (4), (2); CREATE VIEW v1 AS SELECT * FROM t1; SET @tmp_optimizer_switch=@@optimizer_switch; SET optimizer_switch='materialization=on,in_to_exists=on'; EXPLAIN SELECT * FROM t2,t3 WHERE (2,9) IN (SELECT DISTINCT a,pk FROM t1) OR a = b; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t2 index a a 5 NULL 2 Using where; Using index 1 PRIMARY t3 ref b b 5 test.t2.a 2 Using index 2 SUBQUERY t1 const PRIMARY,a PRIMARY 4 const 1 Using where SELECT * FROM t2,t3 WHERE (2,9) IN (SELECT DISTINCT a,pk FROM t1) OR a = b; pk a b 0 4 4 EXPLAIN SELECT * FROM t2,t3 WHERE (2,9) IN (SELECT DISTINCT a,pk FROM v1) OR a = b; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t2 index a a 5 NULL 2 Using where; Using index 1 PRIMARY t3 ref b b 5 test.t2.a 2 Using index 2 SUBQUERY t1 const PRIMARY,a PRIMARY 4 const 1 Using where SELECT * FROM t2,t3 WHERE (2,9) IN (SELECT DISTINCT a,pk FROM v1) OR a = b; pk a b 0 4 4 SET optimizer_switch=@tmp_optimizer_switch; DROP VIEW v1; DROP TABLE t1,t2,t3; # # MDEV-536: LP:1050806 - different result for a query using subquery # DROP TABLE IF EXISTS `t1`; Warnings: Note 1051 Unknown table 'test.t1' CREATE TABLE `t1` ( `node_uid` bigint(20) unsigned DEFAULT NULL, `date` datetime DEFAULT NULL, `mirror_date` datetime DEFAULT NULL, KEY `date` (`date`) ) ENGINE=MyISAM; INSERT INTO `t1` VALUES (2085,'2012-01-01 00:00:00','2013-01-01 00:00:00'); INSERT INTO `t1` VALUES (2084,'2012-02-01 00:00:00','2013-01-01 00:00:00'); INSERT INTO `t1` VALUES (2088,'2012-03-01 00:00:00','2013-01-01 00:00:00'); SELECT * FROM ( SELECT node_uid, date, mirror_date, @result := 0 AS result FROM t1 WHERE date < '2012-12-12 12:12:12' AND node_uid in (2085, 2084) ORDER BY mirror_date ASC ) AS calculated_result; node_uid date mirror_date result 2085 2012-01-01 00:00:00 2013-01-01 00:00:00 0 2084 2012-02-01 00:00:00 2013-01-01 00:00:00 0 DROP TABLE t1; # # MDEV-567: Wrong result from a query with correlated subquery if ICP is allowed # CREATE TABLE t1 (a int, b int, INDEX idx(a)); INSERT INTO t1 VALUES (9,0), (7,1), (1,9), (7,3), (2,1); CREATE TABLE t2 (a int, b int, INDEX idx(a)); INSERT INTO t2 VALUES (2,1), (6,4), (7,6), (9,4); CREATE TABLE t3 (a int, b int); INSERT INTO t3 VALUES (1,0), (1,1), (1,3); SELECT * FROM t3 WHERE a = (SELECT COUNT(DISTINCT t2.b) FROM t1, t2 WHERE t1.a = t2.a AND t2.a BETWEEN 7 AND 9 AND t3.b = t1.b GROUP BY t1.b); a b 1 0 1 1 1 3 set @tmp_mdev567=@@optimizer_switch; set optimizer_switch='mrr=off'; SELECT * FROM t3 WHERE a = (SELECT COUNT(DISTINCT t2.b) FROM t1, t2 WHERE t1.a = t2.a AND t2.a BETWEEN 7 AND 9 AND t3.b = t1.b GROUP BY t1.b); a b 1 0 1 1 1 3 DROP TABLE t1,t2,t3; set optimizer_switch=@tmp_mdev567; # # MDEV-4996: degenerate OR formula in WHERE of a subquery # CREATE TABLE t1 (a int, c1 varchar(1)) ENGINE=MyISAM; INSERT INTO t1 VALUES (2,'x'), (8,'d'); CREATE TABLE t2 (m int, n int, c2 varchar(1)) ENGINE=MyISAM; INSERT INTO t2 VALUES (0, 5, 'x'), (1, 4,'p'); SELECT * FROM t1 WHERE c1 NOT IN ( SELECT t2a.c2 FROM t2 AS t2a, t2 AS t2b, t2 AS t2c WHERE t2c.c2 = t2b.c2 AND ( t2a.m = t2b.n OR 0 ) AND ( t2b.m != a OR t2b.m = t2a.m )); a c1 2 x 8 d EXPLAIN EXTENDED SELECT * FROM t1 WHERE c1 NOT IN ( SELECT t2a.c2 FROM t2 AS t2a, t2 AS t2b, t2 AS t2c WHERE t2c.c2 = t2b.c2 AND ( t2a.m = t2b.n OR 0 ) AND ( t2b.m != a OR t2b.m = t2a.m )); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where 2 DEPENDENT SUBQUERY t2a ALL NULL NULL NULL NULL 2 100.00 Using where 2 DEPENDENT SUBQUERY t2b ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) 2 DEPENDENT SUBQUERY t2c ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`c1` AS `c1` from `test`.`t1` where !<`test`.`t1`.`c1`,`test`.`t1`.`a`>((`test`.`t1`.`c1`,(/* select#2 */ select `test`.`t2a`.`c2` from `test`.`t2` `t2a` join `test`.`t2` `t2b` join `test`.`t2` `t2c` where (`test`.`t2b`.`m` <> `test`.`t1`.`a` or `test`.`t2b`.`m` = `test`.`t2a`.`m`) and trigcond((`test`.`t1`.`c1`) = `test`.`t2a`.`c2` or `test`.`t2a`.`c2` is null) and `test`.`t2c`.`c2` = `test`.`t2b`.`c2` and `test`.`t2b`.`n` = `test`.`t2a`.`m` having trigcond(`test`.`t2a`.`c2` is null)))) DROP TABLE t1,t2; # # MDEV-614, also MDEV-536, also LP:1050806: # different result for a query using subquery between 5.5.25 and 5.5.27 # CREATE TABLE `t1` ( `node_uid` bigint(20) unsigned DEFAULT NULL, `date` datetime DEFAULT NULL, `mirror_date` datetime DEFAULT NULL, KEY `date` (`date`) ) ENGINE=MyISAM; INSERT INTO `t1` VALUES (2085,'2012-01-01 00:00:00','2013-01-01 00:00:00'); INSERT INTO `t1` VALUES (2084,'2012-02-01 00:00:00','2013-01-01 00:00:00'); INSERT INTO `t1` VALUES (2088,'2012-03-01 00:00:00','2013-01-01 00:00:00'); explain SELECT * FROM ( SELECT node_uid, date, mirror_date, @result := 0 AS result FROM t1 WHERE date < '2012-12-12 12:12:12' AND node_uid in (2085, 2084) ORDER BY mirror_date ASC ) AS calculated_result; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY ALL NULL NULL NULL NULL 2 2 DERIVED t1 range date date 6 NULL 2 Using index condition; Using where; Rowid-ordered scan; Using filesort SELECT * FROM ( SELECT node_uid, date, mirror_date, @result := 0 AS result FROM t1 WHERE date < '2012-12-12 12:12:12' AND node_uid in (2085, 2084) ORDER BY mirror_date ASC ) AS calculated_result; node_uid date mirror_date result 2085 2012-01-01 00:00:00 2013-01-01 00:00:00 0 2084 2012-02-01 00:00:00 2013-01-01 00:00:00 0 set @tmp_mdev614=@@optimizer_switch; set optimizer_switch='mrr=off'; explain SELECT * FROM ( SELECT node_uid, date, mirror_date, @result := 0 AS result FROM t1 WHERE date < '2012-12-12 12:12:12' AND node_uid in (2085, 2084) ORDER BY mirror_date ASC ) AS calculated_result; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY ALL NULL NULL NULL NULL 2 2 DERIVED t1 range date date 6 NULL 2 Using index condition; Using where; Using filesort SELECT * FROM ( SELECT node_uid, date, mirror_date, @result := 0 AS result FROM t1 WHERE date < '2012-12-12 12:12:12' AND node_uid in (2085, 2084) ORDER BY mirror_date ASC ) AS calculated_result; node_uid date mirror_date result 2085 2012-01-01 00:00:00 2013-01-01 00:00:00 0 2084 2012-02-01 00:00:00 2013-01-01 00:00:00 0 set optimizer_switch=@tmp_mdev614; DROP TABLE t1; # # MDEV-4420: non-expensive single-value subquery used as # used as an access key to join a table # create table t1 (a varchar(3)); insert into t1 values ('USA'), ('FRA'); create table t2 select * from t1; insert into t2 values ('RUS'); create table t3 select * from t2; create index idx on t3(a); explain extended select * from t1, t2 left join t3 on ( t2.a = t3.a ) where t1.a = t2.a and ( t1.a = ( select min(a) from t1 ) or 0 ); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) 1 PRIMARY t3 ref idx idx 6 func 2 100.00 Using where; Using index 2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Warnings: Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t1`.`a`) where `test`.`t1`.`a` = (/* select#2 */ select min(`test`.`t1`.`a`) from `test`.`t1`) and `test`.`t2`.`a` = (/* select#2 */ select min(`test`.`t1`.`a`) from `test`.`t1`) select * from t1, t2 left join t3 on ( t2.a = t3.a ) where t1.a = t2.a and ( t1.a = ( select min(a) from t1 ) or 0 ); a a a FRA FRA FRA drop table t1,t2,t3; # # MDEV-10148: Database crashes in the query to the View # CREATE TABLE t1 ( key_code INT(11) NOT NULL, value_string VARCHAR(50) NULL DEFAULT NULL, PRIMARY KEY (key_code) ) COLLATE='utf8_general_ci' ENGINE=InnoDB ; CREATE TABLE t2 ( key_code INT(11) NOT NULL, target_date DATE NULL DEFAULT NULL, PRIMARY KEY (key_code) ) COLLATE='utf8_general_ci' ENGINE=InnoDB ; CREATE TABLE t3 ( now_date DATE NOT NULL, PRIMARY KEY (now_date) ) COLLATE='utf8_general_ci' ENGINE=InnoDB ; CREATE VIEW v1 AS SELECT B.key_code, B.target_date FROM t2 B INNER JOIN t3 C ON B.target_date = C.now_date ; SET @s = 'SELECT A.* FROM t1 A WHERE A.key_code IN (SELECT key_code FROM v1)'; PREPARE stmt FROM @s; EXECUTE stmt; key_code value_string EXECUTE stmt; key_code value_string DEALLOCATE PREPARE stmt; DROP VIEW v1; DROP TABLE t1,t2,t3; set optimizer_switch=@subselect2_test_tmp; create table t1 (a int); create table t2 (a int); create table t3(a int); insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); insert into t2 select a from t1; insert into t3 select a from t1; select null in (select a from t1 where a < out3.a union select a from t2 where (select a from t3) +1 < out3.a+1) from t3 out3; ERROR 21000: Subquery returns more than 1 row drop table t1, t2, t3;