diff options
Diffstat (limited to 'mysql-test/main/join_outer_jcl6.result')
| -rw-r--r-- | mysql-test/main/join_outer_jcl6.result | 2482 |
1 files changed, 2482 insertions, 0 deletions
diff --git a/mysql-test/main/join_outer_jcl6.result b/mysql-test/main/join_outer_jcl6.result new file mode 100644 index 00000000000..9ff501baf6a --- /dev/null +++ b/mysql-test/main/join_outer_jcl6.result @@ -0,0 +1,2482 @@ +set @save_optimizer_switch_jcl6=@@optimizer_switch; +set @@optimizer_switch='optimize_join_buffer_size=on'; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on'; +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +set @optimizer_switch_for_join_outer_test=@@optimizer_switch; +set @join_cache_level_for_join_outer_test=@@join_cache_level; +drop table if exists t0,t1,t2,t3,t4,t5; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch=ifnull(@optimizer_switch_for_join_outer_test,'outer_join_with_cache=off'); +set join_cache_level=@join_cache_level_for_join_outer_test; +CREATE TABLE t1 ( +grp int(11) default NULL, +a bigint(20) unsigned default NULL, +c char(10) NOT NULL default '' +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,1,'a'),(2,2,'b'),(2,3,'c'),(3,4,'E'),(3,5,'C'),(3,6,'D'),(NULL,NULL,''); +create table t2 (id int, a bigint unsigned not null, c char(10), d int, primary key (a)); +insert into t2 values (1,1,"a",1),(3,4,"A",4),(3,5,"B",5),(3,6,"C",6),(4,7,"D",7); +select t1.*,t2.* from t1 JOIN t2 where t1.a=t2.a; +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) order by t1.grp,t1.a,t2.c; +grp a c id a c d +NULL NULL NULL NULL NULL NULL +1 1 a 1 1 a 1 +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from { oj t2 left outer join t1 on (t1.a=t2.a) }; +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +NULL NULL NULL 4 7 D 7 +select t1.*,t2.* from t1 as t0,{ oj t2 left outer join t1 on (t1.a=t2.a) } WHERE t0.a=2; +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +NULL NULL NULL 4 7 D 7 +select t1.*,t2.* from t1 left join t2 using (a); +grp a c id a c d +1 1 a 1 1 a 1 +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +NULL NULL NULL NULL NULL NULL +select t1.*,t2.* from t1 left join t2 using (a) where t1.a=t2.a; +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 left join t2 using (a,c); +grp a c id a c d +1 1 a 1 1 a 1 +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +3 4 E NULL NULL NULL NULL +3 5 C NULL NULL NULL NULL +3 6 D NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL +select t1.*,t2.* from t1 left join t2 using (c); +grp a c id a c d +1 1 a 1 1 a 1 +1 1 a 3 4 A 4 +2 2 b 3 5 B 5 +2 3 c 3 6 C 6 +3 4 E NULL NULL NULL NULL +3 5 C 3 6 C 6 +3 6 D 4 7 D 7 +NULL NULL NULL NULL NULL NULL +select t1.*,t2.* from t1 natural left outer join t2; +grp a c id a c d +1 1 a 1 1 a 1 +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +3 4 E NULL NULL NULL NULL +3 5 C NULL NULL NULL NULL +3 6 D NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL +select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) where t2.id=3; +grp a c id a c d +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) where t2.id is null; +grp a c id a c d +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL +explain select t1.*,t2.* from t1,t2 where t1.a=t2.a and isnull(t2.a)=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a); +grp a c id a c d a +1 1 a 1 1 a 1 1 +2 2 b NULL NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL NULL +3 4 E 3 4 A 4 4 +3 5 C 3 5 B 5 5 +3 6 D 3 6 C 6 6 +NULL NULL NULL NULL NULL NULL NULL +explain select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t1.a=t3.a); +ERROR 42S22: Unknown column 't3.a' in 'on clause' +select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t1.a=t3.a); +ERROR 42S22: Unknown column 't3.a' in 'on clause' +select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t2.a=t3.a); +ERROR 42S22: Unknown column 't3.a' in 'on clause' +select t1.*,t2.* from t1 inner join t2 using (a); +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 inner join t2 on (t1.a=t2.a); +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 natural join t2; +grp a c id a c d +1 1 a 1 1 a 1 +drop table t1,t2; +CREATE TABLE t1 ( +usr_id INT unsigned NOT NULL, +uniq_id INT unsigned NOT NULL AUTO_INCREMENT, +start_num INT unsigned NOT NULL DEFAULT 1, +increment INT unsigned NOT NULL DEFAULT 1, +PRIMARY KEY (uniq_id), +INDEX usr_uniq_idx (usr_id, uniq_id), +INDEX uniq_usr_idx (uniq_id, usr_id) +); +CREATE TABLE t2 ( +id INT unsigned NOT NULL DEFAULT 0, +usr2_id INT unsigned NOT NULL DEFAULT 0, +max INT unsigned NOT NULL DEFAULT 0, +c_amount INT unsigned NOT NULL DEFAULT 0, +d_max INT unsigned NOT NULL DEFAULT 0, +d_num INT unsigned NOT NULL DEFAULT 0, +orig_time INT unsigned NOT NULL DEFAULT 0, +c_time INT unsigned NOT NULL DEFAULT 0, +active ENUM ("no","yes") NOT NULL, +PRIMARY KEY (id,usr2_id), +INDEX id_idx (id), +INDEX usr2_idx (usr2_id) +); +INSERT INTO t1 VALUES (3,NULL,0,50),(3,NULL,0,200),(3,NULL,0,25),(3,NULL,0,84676),(3,NULL,0,235),(3,NULL,0,10),(3,NULL,0,3098),(3,NULL,0,2947),(3,NULL,0,8987),(3,NULL,0,8347654),(3,NULL,0,20398),(3,NULL,0,8976),(3,NULL,0,500),(3,NULL,0,198); +SELECT t1.usr_id,t1.uniq_id,t1.increment, +t2.usr2_id,t2.c_amount,t2.max +FROM t1 +LEFT JOIN t2 ON t2.id = t1.uniq_id +WHERE t1.uniq_id = 4 +ORDER BY t2.c_amount; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +SELECT t1.usr_id,t1.uniq_id,t1.increment, +t2.usr2_id,t2.c_amount,t2.max +FROM t2 +RIGHT JOIN t1 ON t2.id = t1.uniq_id +WHERE t1.uniq_id = 4 +ORDER BY t2.c_amount; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +INSERT INTO t2 VALUES (2,3,3000,6000,0,0,746584,837484,'yes'); +INSERT INTO t2 VALUES (2,3,3000,6000,0,0,746584,837484,'yes'); +ERROR 23000: Duplicate entry '2-3' for key 'PRIMARY' +INSERT INTO t2 VALUES (7,3,1000,2000,0,0,746294,937484,'yes'); +SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4 ORDER BY t2.c_amount; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4 GROUP BY t2.c_amount; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +drop table t1,t2; +CREATE TABLE t1 ( +cod_asig int(11) DEFAULT '0' NOT NULL, +desc_larga_cat varchar(80) DEFAULT '' NOT NULL, +desc_larga_cas varchar(80) DEFAULT '' NOT NULL, +desc_corta_cat varchar(40) DEFAULT '' NOT NULL, +desc_corta_cas varchar(40) DEFAULT '' NOT NULL, +cred_total double(3,1) DEFAULT '0.0' NOT NULL, +pre_requisit int(11), +co_requisit int(11), +preco_requisit int(11), +PRIMARY KEY (cod_asig) +); +INSERT INTO t1 VALUES (10360,'asdfggfg','Introduccion a los Ordenadores I','asdfggfg','Introduccio Ordinadors I',6.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (10361,'Components i Circuits Electronics I','Componentes y Circuitos Electronicos I','Components i Circuits Electronics I','Comp. i Circ. Electr. I',6.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (10362,'Laboratori d`Ordinadors','Laboratorio de Ordenadores','Laboratori d`Ordinadors','Laboratori Ordinadors',4.5,NULL,NULL,NULL); +INSERT INTO t1 VALUES (10363,'Tecniques de Comunicacio Oral i Escrita','Tecnicas de Comunicacion Oral y Escrita','Tecniques de Comunicacio Oral i Escrita','Tec. Com. Oral i Escrita',4.5,NULL,NULL,NULL); +INSERT INTO t1 VALUES (11403,'Projecte Fi de Carrera','Proyecto Fin de Carrera','Projecte Fi de Carrera','PFC',9.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (11404,'+lgebra lineal','Algebra lineal','+lgebra lineal','+lgebra lineal',15.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (11405,'+lgebra lineal','Algebra lineal','+lgebra lineal','+lgebra lineal',18.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (11406,'Calcul Infinitesimal','Cßlculo Infinitesimal','Calcul Infinitesimal','Calcul Infinitesimal',15.0,NULL,NULL,NULL); +CREATE TABLE t2 ( +idAssignatura int(11) DEFAULT '0' NOT NULL, +Grup int(11) DEFAULT '0' NOT NULL, +Places smallint(6) DEFAULT '0' NOT NULL, +PlacesOcupades int(11) DEFAULT '0', +PRIMARY KEY (idAssignatura,Grup) +); +INSERT INTO t2 VALUES (10360,12,333,0); +INSERT INTO t2 VALUES (10361,30,2,0); +INSERT INTO t2 VALUES (10361,40,3,0); +INSERT INTO t2 VALUES (10360,45,10,0); +INSERT INTO t2 VALUES (10362,10,12,0); +INSERT INTO t2 VALUES (10360,55,2,0); +INSERT INTO t2 VALUES (10360,70,0,0); +INSERT INTO t2 VALUES (10360,565656,0,0); +INSERT INTO t2 VALUES (10360,32767,7,0); +INSERT INTO t2 VALUES (10360,33,8,0); +INSERT INTO t2 VALUES (10360,7887,85,0); +INSERT INTO t2 VALUES (11405,88,8,0); +INSERT INTO t2 VALUES (10360,0,55,0); +INSERT INTO t2 VALUES (10360,99,0,0); +INSERT INTO t2 VALUES (11411,30,10,0); +INSERT INTO t2 VALUES (11404,0,0,0); +INSERT INTO t2 VALUES (10362,11,111,0); +INSERT INTO t2 VALUES (10363,33,333,0); +INSERT INTO t2 VALUES (11412,55,0,0); +INSERT INTO t2 VALUES (50003,66,6,0); +INSERT INTO t2 VALUES (11403,5,0,0); +INSERT INTO t2 VALUES (11406,11,11,0); +INSERT INTO t2 VALUES (11410,11410,131,0); +INSERT INTO t2 VALUES (11416,11416,32767,0); +INSERT INTO t2 VALUES (11409,0,0,0); +CREATE TABLE t3 ( +id int(11) NOT NULL auto_increment, +dni_pasaporte char(16) DEFAULT '' NOT NULL, +idPla int(11) DEFAULT '0' NOT NULL, +cod_asig int(11) DEFAULT '0' NOT NULL, +any smallint(6) DEFAULT '0' NOT NULL, +quatrimestre smallint(6) DEFAULT '0' NOT NULL, +estat char(1) DEFAULT 'M' NOT NULL, +PRIMARY KEY (id), +UNIQUE dni_pasaporte (dni_pasaporte,idPla), +UNIQUE dni_pasaporte_2 (dni_pasaporte,idPla,cod_asig,any,quatrimestre) +); +INSERT INTO t3 VALUES (1,'11111111',1,10362,98,1,'M'); +CREATE TABLE t4 ( +id int(11) NOT NULL auto_increment, +papa int(11) DEFAULT '0' NOT NULL, +fill int(11) DEFAULT '0' NOT NULL, +idPla int(11) DEFAULT '0' NOT NULL, +PRIMARY KEY (id), +KEY papa (idPla,papa), +UNIQUE papa_2 (idPla,papa,fill) +); +INSERT INTO t4 VALUES (1,-1,10360,1); +INSERT INTO t4 VALUES (2,-1,10361,1); +INSERT INTO t4 VALUES (3,-1,10362,1); +SELECT DISTINCT fill,desc_larga_cat,cred_total,Grup,Places,PlacesOcupades FROM t4 LEFT JOIN t3 ON t3.cod_asig=fill AND estat='S' AND dni_pasaporte='11111111' AND t3.idPla=1 , t2,t1 WHERE fill=t1.cod_asig AND Places>PlacesOcupades AND fill=idAssignatura AND t4.idPla=1 AND papa=-1; +fill desc_larga_cat cred_total Grup Places PlacesOcupades +10360 asdfggfg 6.0 0 55 0 +10360 asdfggfg 6.0 12 333 0 +10360 asdfggfg 6.0 32767 7 0 +10360 asdfggfg 6.0 33 8 0 +10360 asdfggfg 6.0 45 10 0 +10360 asdfggfg 6.0 55 2 0 +10360 asdfggfg 6.0 7887 85 0 +10361 Components i Circuits Electronics I 6.0 30 2 0 +10361 Components i Circuits Electronics I 6.0 40 3 0 +10362 Laboratori d`Ordinadors 4.5 10 12 0 +10362 Laboratori d`Ordinadors 4.5 11 111 0 +SELECT DISTINCT fill,t3.idPla FROM t4 LEFT JOIN t3 ON t3.cod_asig=t4.fill AND t3.estat='S' AND t3.dni_pasaporte='1234' AND t3.idPla=1 ; +fill idPla +10360 NULL +10361 NULL +10362 NULL +INSERT INTO t3 VALUES (3,'1234',1,10360,98,1,'S'); +SELECT DISTINCT fill,t3.idPla FROM t4 LEFT JOIN t3 ON t3.cod_asig=t4.fill AND t3.estat='S' AND t3.dni_pasaporte='1234' AND t3.idPla=1 ; +fill idPla +10360 1 +10361 NULL +10362 NULL +drop table t1,t2,t3,test.t4; +CREATE TABLE t1 ( +id smallint(5) unsigned NOT NULL auto_increment, +name char(60) DEFAULT '' NOT NULL, +PRIMARY KEY (id) +); +INSERT INTO t1 VALUES (1,'Antonio Paz'); +INSERT INTO t1 VALUES (2,'Lilliana Angelovska'); +INSERT INTO t1 VALUES (3,'Thimble Smith'); +CREATE TABLE t2 ( +id smallint(5) unsigned NOT NULL auto_increment, +owner smallint(5) unsigned DEFAULT '0' NOT NULL, +name char(60), +PRIMARY KEY (id) +); +INSERT INTO t2 VALUES (1,1,'El Gato'); +INSERT INTO t2 VALUES (2,1,'Perrito'); +INSERT INTO t2 VALUES (3,3,'Happy'); +select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner); +name name id +Antonio Paz El Gato 1 +Antonio Paz Perrito 2 +Lilliana Angelovska NULL NULL +Thimble Smith Happy 3 +select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null; +name name id +Lilliana Angelovska NULL NULL +explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Not exists; Using join buffer (flat, BNLH join) +explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.name is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Using join buffer (flat, BNLH join) +select count(*) from t1 left join t2 on (t1.id = t2.owner); +count(*) +4 +select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner); +name name id +Antonio Paz El Gato 1 +Antonio Paz Perrito 2 +Lilliana Angelovska NULL NULL +Thimble Smith Happy 3 +select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null; +name name id +Lilliana Angelovska NULL NULL +explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Not exists; Using join buffer (flat, BNLH join) +explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.name is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Using join buffer (flat, BNLH join) +select count(*) from t2 right join t1 on (t1.id = t2.owner); +count(*) +4 +select t1.name, t2.name, t2.id,t3.id from t2 right join t1 on (t1.id = t2.owner) left join t1 as t3 on t3.id=t2.owner; +name name id id +Antonio Paz El Gato 1 1 +Antonio Paz Perrito 2 1 +Lilliana Angelovska NULL NULL NULL +Thimble Smith Happy 3 3 +select t1.name, t2.name, t2.id,t3.id from t1 right join t2 on (t1.id = t2.owner) right join t1 as t3 on t3.id=t2.owner; +name name id id +Antonio Paz El Gato 1 1 +Antonio Paz Perrito 2 1 +NULL NULL NULL 2 +Thimble Smith Happy 3 3 +select t1.name, t2.name, t2.id, t2.owner, t3.id from t1 left join t2 on (t1.id = t2.owner) right join t1 as t3 on t3.id=t2.owner; +name name id owner id +Antonio Paz El Gato 1 1 1 +Antonio Paz Perrito 2 1 1 +NULL NULL NULL NULL 2 +Thimble Smith Happy 3 3 3 +drop table t1,t2; +create table t1 (id int not null, str char(10), index(str)); +insert into t1 values (1, null), (2, null), (3, "foo"), (4, "bar"); +select * from t1 where str is not null order by id; +id str +3 foo +4 bar +select * from t1 where str is null; +id str +1 NULL +2 NULL +drop table t1; +CREATE TABLE t1 ( +t1_id bigint(21) NOT NULL auto_increment, +PRIMARY KEY (t1_id) +); +CREATE TABLE t2 ( +t2_id bigint(21) NOT NULL auto_increment, +PRIMARY KEY (t2_id) +); +CREATE TABLE t3 ( +t3_id bigint(21) NOT NULL auto_increment, +PRIMARY KEY (t3_id) +); +CREATE TABLE t4 ( +seq_0_id bigint(21) DEFAULT '0' NOT NULL, +seq_1_id bigint(21) DEFAULT '0' NOT NULL, +KEY seq_0_id (seq_0_id), +KEY seq_1_id (seq_1_id) +); +CREATE TABLE t5 ( +seq_0_id bigint(21) DEFAULT '0' NOT NULL, +seq_1_id bigint(21) DEFAULT '0' NOT NULL, +KEY seq_1_id (seq_1_id), +KEY seq_0_id (seq_0_id) +); +insert into t1 values (1); +insert into t2 values (1); +insert into t3 values (1); +insert into t4 values (1,1); +insert into t5 values (1,1); +explain select * from t3 left join t4 on t4.seq_1_id = t2.t2_id left join t1 on t1.t1_id = t4.seq_0_id left join t5 on t5.seq_0_id = t1.t1_id left join t2 on t2.t2_id = t5.seq_1_id where t3.t3_id = 23; +ERROR 42S22: Unknown column 't2.t2_id' in 'on clause' +drop table t1,t2,t3,t4,t5; +create table t1 (n int, m int, o int, key(n)); +create table t2 (n int not null, m int, o int, primary key(n)); +insert into t1 values (1, 2, 11), (1, 2, 7), (2, 2, 8), (1,2,9),(1,3,9); +insert into t2 values (1, 2, 3),(2, 2, 8), (4,3,9),(3,2,10); +select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and +t1.m = t2.m where t1.n = 1; +n m o n m o +1 2 11 1 2 3 +1 2 7 1 2 3 +1 2 9 1 2 3 +1 3 9 NULL NULL NULL +select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and +t1.m = t2.m where t1.n = 1 order by t1.o; +n m o n m o +1 2 11 1 2 3 +1 2 7 1 2 3 +1 2 9 1 2 3 +1 3 9 NULL NULL NULL +drop table t1,t2; +CREATE TABLE t1 (id1 INT NOT NULL PRIMARY KEY, dat1 CHAR(1), id2 INT); +INSERT INTO t1 VALUES (1,'a',1); +INSERT INTO t1 VALUES (2,'b',1); +INSERT INTO t1 VALUES (3,'c',2); +CREATE TABLE t2 (id2 INT NOT NULL PRIMARY KEY, dat2 CHAR(1)); +INSERT INTO t2 VALUES (1,'x'); +INSERT INTO t2 VALUES (2,'y'); +INSERT INTO t2 VALUES (3,'z'); +SELECT t2.id2 FROM t2 LEFT OUTER JOIN t1 ON t1.id2 = t2.id2 WHERE id1 IS NULL; +id2 +3 +SELECT t2.id2 FROM t2 NATURAL LEFT OUTER JOIN t1 WHERE id1 IS NULL; +id2 +3 +drop table t1,t2; +create table t1 ( color varchar(20), name varchar(20) ); +insert into t1 values ( 'red', 'apple' ); +insert into t1 values ( 'yellow', 'banana' ); +insert into t1 values ( 'green', 'lime' ); +insert into t1 values ( 'black', 'grape' ); +insert into t1 values ( 'blue', 'blueberry' ); +create table t2 ( count int, color varchar(20) ); +insert into t2 values (10, 'green'); +insert into t2 values (5, 'black'); +insert into t2 values (15, 'white'); +insert into t2 values (7, 'green'); +select * from t1; +color name +red apple +yellow banana +green lime +black grape +blue blueberry +select * from t2; +count color +10 green +5 black +15 white +7 green +select * from t2 natural join t1; +color count name +green 10 lime +green 7 lime +black 5 grape +select t2.count, t1.name from t2 natural join t1; +count name +10 lime +7 lime +5 grape +select t2.count, t1.name from t2 inner join t1 using (color); +count name +10 lime +7 lime +5 grape +drop table t1; +drop table t2; +CREATE TABLE t1 ( +pcode varchar(8) DEFAULT '' NOT NULL +); +INSERT INTO t1 VALUES ('kvw2000'),('kvw2001'),('kvw3000'),('kvw3001'),('kvw3002'),('kvw3500'),('kvw3501'),('kvw3502'),('kvw3800'),('kvw3801'),('kvw3802'),('kvw3900'),('kvw3901'),('kvw3902'),('kvw4000'),('kvw4001'),('kvw4002'),('kvw4200'),('kvw4500'),('kvw5000'),('kvw5001'),('kvw5500'),('kvw5510'),('kvw5600'),('kvw5601'),('kvw6000'),('klw1000'),('klw1020'),('klw1500'),('klw2000'),('klw2001'),('klw2002'),('kld2000'),('klw2500'),('kmw1000'),('kmw1500'),('kmw2000'),('kmw2001'),('kmw2100'),('kmw3000'),('kmw3200'); +CREATE TABLE t2 ( +pcode varchar(8) DEFAULT '' NOT NULL, +KEY pcode (pcode) +); +INSERT INTO t2 VALUES ('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw6000'),('kvw6000'),('kld2000'); +SELECT t1.pcode, IF(ISNULL(t2.pcode), 0, COUNT(*)) AS count FROM t1 +LEFT JOIN t2 ON t1.pcode = t2.pcode GROUP BY t1.pcode; +pcode count +kld2000 1 +klw1000 0 +klw1020 0 +klw1500 0 +klw2000 0 +klw2001 0 +klw2002 0 +klw2500 0 +kmw1000 0 +kmw1500 0 +kmw2000 0 +kmw2001 0 +kmw2100 0 +kmw3000 0 +kmw3200 0 +kvw2000 26 +kvw2001 0 +kvw3000 36 +kvw3001 0 +kvw3002 0 +kvw3500 26 +kvw3501 0 +kvw3502 0 +kvw3800 0 +kvw3801 0 +kvw3802 0 +kvw3900 0 +kvw3901 0 +kvw3902 0 +kvw4000 0 +kvw4001 0 +kvw4002 0 +kvw4200 0 +kvw4500 0 +kvw5000 0 +kvw5001 0 +kvw5500 0 +kvw5510 0 +kvw5600 0 +kvw5601 0 +kvw6000 2 +SELECT SQL_BIG_RESULT t1.pcode, IF(ISNULL(t2.pcode), 0, COUNT(*)) AS count FROM t1 LEFT JOIN t2 ON t1.pcode = t2.pcode GROUP BY t1.pcode; +pcode count +kld2000 1 +klw1000 0 +klw1020 0 +klw1500 0 +klw2000 0 +klw2001 0 +klw2002 0 +klw2500 0 +kmw1000 0 +kmw1500 0 +kmw2000 0 +kmw2001 0 +kmw2100 0 +kmw3000 0 +kmw3200 0 +kvw2000 26 +kvw2001 0 +kvw3000 36 +kvw3001 0 +kvw3002 0 +kvw3500 26 +kvw3501 0 +kvw3502 0 +kvw3800 0 +kvw3801 0 +kvw3802 0 +kvw3900 0 +kvw3901 0 +kvw3902 0 +kvw4000 0 +kvw4001 0 +kvw4002 0 +kvw4200 0 +kvw4500 0 +kvw5000 0 +kvw5001 0 +kvw5500 0 +kvw5510 0 +kvw5600 0 +kvw5601 0 +kvw6000 2 +drop table t1,t2; +CREATE TABLE t1 ( +id int(11), +pid int(11), +rep_del tinyint(4), +KEY id (id), +KEY pid (pid) +); +INSERT INTO t1 VALUES (1,NULL,NULL); +INSERT INTO t1 VALUES (2,1,NULL); +select * from t1 LEFT JOIN t1 t2 ON (t1.id=t2.pid) AND t2.rep_del IS NULL; +id pid rep_del id pid rep_del +1 NULL NULL 2 1 NULL +2 1 NULL NULL NULL NULL +create index rep_del ON t1(rep_del); +select * from t1 LEFT JOIN t1 t2 ON (t1.id=t2.pid) AND t2.rep_del IS NULL; +id pid rep_del id pid rep_del +1 NULL NULL 2 1 NULL +2 1 NULL NULL NULL NULL +drop table t1; +CREATE TABLE t1 ( +id int(11) DEFAULT '0' NOT NULL, +name tinytext DEFAULT '' NOT NULL, +UNIQUE id (id) +); +INSERT INTO t1 VALUES (1,'yes'),(2,'no'); +CREATE TABLE t2 ( +id int(11) DEFAULT '0' NOT NULL, +idx int(11) DEFAULT '0' NOT NULL, +UNIQUE id (id,idx) +); +INSERT INTO t2 VALUES (1,1); +explain SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ref id id 4 test.t1.id 1 Using where; Using index; Not exists +SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL; +id name id idx +2 no NULL NULL +drop table t1,t2; +create table t1 (bug_id mediumint, reporter mediumint); +create table t2 (bug_id mediumint, who mediumint, index(who)); +insert into t2 values (1,1),(1,2); +insert into t1 values (1,1),(2,1); +SELECT * FROM t1 LEFT JOIN t2 ON (t1.bug_id = t2.bug_id AND t2.who = 2) WHERE (t1.reporter = 2 OR t2.who = 2); +bug_id reporter bug_id who +1 1 1 2 +drop table t1,t2; +create table t1 (fooID smallint unsigned auto_increment, primary key (fooID)); +create table t2 (fooID smallint unsigned not null, barID smallint unsigned not null, primary key (fooID,barID)); +insert into t1 (fooID) values (10),(20),(30); +insert into t2 values (10,1),(20,2),(30,3); +explain select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 index NULL PRIMARY 4 NULL 3 Using index +1 SIMPLE t1 const PRIMARY PRIMARY 2 const 1 Using where; Using index +select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30; +fooID barID fooID +10 1 NULL +20 2 NULL +30 3 30 +select * from t2 left join t1 ignore index(primary) on t1.fooID = t2.fooID and t1.fooID = 30; +fooID barID fooID +10 1 NULL +20 2 NULL +30 3 30 +drop table t1,t2; +create table t1 (i int); +create table t2 (i int); +create table t3 (i int); +insert into t1 values(1),(2); +insert into t2 values(2),(3); +insert into t3 values(2),(4); +select * from t1 natural left join t2 natural left join t3; +i +1 +2 +select * from t1 natural left join t2 where (t2.i is not null)=0; +i +1 +select * from t1 natural left join t2 where (t2.i is not null) is not null; +i +1 +2 +select * from t1 natural left join t2 where (i is not null)=0; +i +select * from t1 natural left join t2 where (i is not null) is not null; +i +1 +2 +drop table t1,t2,t3; +create table t1 (f1 integer,f2 integer,f3 integer); +create table t2 (f2 integer,f4 integer); +create table t3 (f3 integer,f5 integer); +select * from t1 +left outer join t2 using (f2) +left outer join t3 using (f3); +f3 f2 f1 f4 f5 +drop table t1,t2,t3; +create table t1 (a1 int, a2 int); +create table t2 (b1 int not null, b2 int); +create table t3 (c1 int, c2 int); +insert into t1 values (1,2), (2,2), (3,2); +insert into t2 values (1,3), (2,3); +insert into t3 values (2,4), (3,4); +select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; +a1 a2 b1 b2 c1 c2 +3 2 NULL NULL 3 4 +1 2 1 3 NULL NULL +2 2 2 3 NULL NULL +explain select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 4 test.t1.a1 2 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t3 hash_ALL NULL #hash#$hj 5 test.t1.a1 2 Using where; Using join buffer (incremental, BNLH join) +drop table t1, t2, t3; +create table t1 ( +a int(11), +b char(10), +key (a) +); +insert into t1 (a) values (1),(2),(3),(4); +create table t2 (a int); +select * from t1 left join t2 on t1.a=t2.a where not (t2.a <=> t1.a); +a b a +1 NULL NULL +2 NULL NULL +3 NULL NULL +4 NULL NULL +select * from t1 left join t2 on t1.a=t2.a having not (t2.a <=> t1.a); +a b a +1 NULL NULL +2 NULL NULL +3 NULL NULL +4 NULL NULL +drop table t1,t2; +create table t1 ( +match_id tinyint(3) unsigned not null auto_increment, +home tinyint(3) unsigned default '0', +unique key match_id (match_id), +key match_id_2 (match_id) +); +insert into t1 values("1", "2"); +create table t2 ( +player_id tinyint(3) unsigned default '0', +match_1_h tinyint(3) unsigned default '0', +key player_id (player_id) +); +insert into t2 values("1", "5"); +insert into t2 values("2", "9"); +insert into t2 values("3", "3"); +insert into t2 values("4", "7"); +insert into t2 values("5", "6"); +insert into t2 values("6", "8"); +insert into t2 values("7", "4"); +insert into t2 values("8", "12"); +insert into t2 values("9", "11"); +insert into t2 values("10", "10"); +explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +(t2 s left join t1 m on m.match_id = 1) +order by m.match_id desc; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort +1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +(t2 s left join t1 m on m.match_id = 1) +order by UUX desc; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort +1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +(t2 s left join t1 m on m.match_id = 1) +order by UUX desc; +player_id match_1_h * match_id home UUX +8 12 * 1 2 10 +9 11 * 1 2 9 +10 10 * 1 2 8 +2 9 * 1 2 7 +6 8 * 1 2 6 +4 7 * 1 2 5 +5 6 * 1 2 4 +1 5 * 1 2 3 +7 4 * 1 2 2 +3 3 * 1 2 1 +explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +t2 s straight_join t1 m where m.match_id = 1 +order by UUX desc; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort +1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +t2 s straight_join t1 m where m.match_id = 1 +order by UUX desc; +player_id match_1_h * match_id home UUX +8 12 * 1 2 10 +9 11 * 1 2 9 +10 10 * 1 2 8 +2 9 * 1 2 7 +6 8 * 1 2 6 +4 7 * 1 2 5 +5 6 * 1 2 4 +1 5 * 1 2 3 +7 4 * 1 2 2 +3 3 * 1 2 1 +drop table t1, t2; +create table t1 (a int, b int, unique index idx (a, b)); +create table t2 (a int, b int, c int, unique index idx (a, b)); +insert into t1 values (1, 10), (1,11), (2,10), (2,11); +insert into t2 values (1,10,3); +select t1.a, t1.b, t2.c from t1 left join t2 +on t1.a=t2.a and t1.b=t2.b and t2.c=3 +where t1.a=1 and t2.c is null; +a b c +1 11 NULL +drop table t1, t2; +CREATE TABLE t1 ( +ts_id bigint(20) default NULL, +inst_id tinyint(4) default NULL, +flag_name varchar(64) default NULL, +flag_value text, +UNIQUE KEY ts_id (ts_id,inst_id,flag_name) +) ENGINE=MyISAM DEFAULT CHARSET=utf8; +CREATE TABLE t2 ( +ts_id bigint(20) default NULL, +inst_id tinyint(4) default NULL, +flag_name varchar(64) default NULL, +flag_value text, +UNIQUE KEY ts_id (ts_id,inst_id,flag_name) +) ENGINE=MyISAM DEFAULT CHARSET=utf8; +INSERT INTO t1 VALUES +(111056548820001, 0, 'flag1', NULL), +(111056548820001, 0, 'flag2', NULL), +(2, 0, 'other_flag', NULL); +INSERT INTO t2 VALUES +(111056548820001, 3, 'flag1', 'sss'); +SELECT t1.flag_name,t2.flag_value +FROM t1 LEFT JOIN t2 +ON (t1.ts_id = t2.ts_id AND t1.flag_name = t2.flag_name AND +t2.inst_id = 3) +WHERE t1.inst_id = 0 AND t1.ts_id=111056548820001 AND +t2.flag_value IS NULL; +flag_name flag_value +flag2 NULL +DROP TABLE t1,t2; +CREATE TABLE t1 ( +id int(11) unsigned NOT NULL auto_increment, +text_id int(10) unsigned default NULL, +PRIMARY KEY (id) +); +INSERT INTO t1 VALUES("1", "0"); +INSERT INTO t1 VALUES("2", "10"); +CREATE TABLE t2 ( +text_id char(3) NOT NULL default '', +language_id char(3) NOT NULL default '', +text_data text, +PRIMARY KEY (text_id,language_id) +); +INSERT INTO t2 VALUES("0", "EN", "0-EN"); +INSERT INTO t2 VALUES("0", "SV", "0-SV"); +INSERT INTO t2 VALUES("10", "EN", "10-EN"); +INSERT INTO t2 VALUES("10", "SV", "10-SV"); +SELECT t1.id, t1.text_id, t2.text_data +FROM t1 LEFT JOIN t2 +ON t1.text_id = t2.text_id +AND t2.language_id = 'SV' + WHERE (t1.id LIKE '%' OR t2.text_data LIKE '%'); +id text_id text_data +1 0 0-SV +2 10 10-SV +DROP TABLE t1, t2; +CREATE TABLE t0 (a0 int PRIMARY KEY); +CREATE TABLE t1 (a1 int PRIMARY KEY); +CREATE TABLE t2 (a2 int); +CREATE TABLE t3 (a3 int); +INSERT INTO t0 VALUES (1); +INSERT INTO t1 VALUES (1); +INSERT INTO t2 VALUES (1), (2); +INSERT INTO t3 VALUES (1), (2); +SELECT * FROM t1 LEFT JOIN t2 ON a1=0; +a1 a2 +1 NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON a1=0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0; +a1 a2 a3 +1 NULL NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 +SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1; +a0 a1 a2 a3 +1 1 NULL NULL +EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 +INSERT INTO t0 VALUES (0); +INSERT INTO t1 VALUES (0); +SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=5 WHERE a0=a1 AND a0=1; +a0 a1 a2 a3 +1 1 NULL NULL +EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=5 WHERE a0=a1 AND a0=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 +drop table t1,t2; +create table t1 (a int, b int); +insert into t1 values (1,1),(2,2),(3,3); +create table t2 (a int, b int); +insert into t2 values (1,1), (2,2); +select * from t2 right join t1 on t2.a=t1.a; +a b a b +1 1 1 1 +2 2 2 2 +NULL NULL 3 3 +select straight_join * from t2 right join t1 on t2.a=t1.a; +a b a b +1 1 1 1 +2 2 2 2 +NULL NULL 3 3 +DROP TABLE t0,t1,t2,t3; +CREATE TABLE t1 (a int PRIMARY KEY, b int); +CREATE TABLE t2 (a int PRIMARY KEY, b int); +INSERT INTO t1 VALUES (1,1), (2,1), (3,1), (4,2); +INSERT INTO t2 VALUES (1,2), (2,2); +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a; +a b a b +1 1 1 2 +2 1 2 2 +3 1 NULL NULL +4 2 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t1.b=1; +a b a b +1 1 1 2 +2 1 2 2 +3 1 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a +WHERE t1.b=1 XOR (NOT ISNULL(t2.a) AND t2.b=1); +a b a b +1 1 1 2 +2 1 2 2 +3 1 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE not(0+(t1.a=30 and t2.b=1)); +a b a b +1 1 1 2 +2 1 2 2 +3 1 NULL NULL +4 2 NULL NULL +DROP TABLE t1,t2; +set group_concat_max_len=5; +create table t1 (a int, b varchar(20)); +create table t2 (a int, c varchar(20)); +insert into t1 values (1,"aaaaaaaaaa"),(2,"bbbbbbbbbb"); +insert into t2 values (1,"cccccccccc"),(2,"dddddddddd"); +select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by t1.a; +group_concat(t1.b,t2.c) +aaaaa +bbbbb +Warnings: +Warning 1260 Row 1 was cut by GROUP_CONCAT() +Warning 1260 Row 2 was cut by GROUP_CONCAT() +select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by t1.a; +group_concat(t1.b,t2.c) +aaaaa +bbbbb +Warnings: +Warning 1260 Row 1 was cut by GROUP_CONCAT() +Warning 1260 Row 2 was cut by GROUP_CONCAT() +select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by a; +group_concat(t1.b,t2.c) +aaaaa +bbbbb +Warnings: +Warning 1260 Row 1 was cut by GROUP_CONCAT() +Warning 1260 Row 2 was cut by GROUP_CONCAT() +select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by a; +group_concat(t1.b,t2.c) +aaaaa +bbbbb +Warnings: +Warning 1260 Row 1 was cut by GROUP_CONCAT() +Warning 1260 Row 2 was cut by GROUP_CONCAT() +drop table t1, t2; +set group_concat_max_len=default; +create table t1 (gid smallint(5) unsigned not null, x int(11) not null, y int(11) not null, art int(11) not null, primary key (gid,x,y)); +insert t1 values (1, -5, -8, 2), (1, 2, 2, 1), (1, 1, 1, 1); +create table t2 (gid smallint(5) unsigned not null, x int(11) not null, y int(11) not null, id int(11) not null, primary key (gid,id,x,y), key id (id)); +insert t2 values (1, -5, -8, 1), (1, 1, 1, 1), (1, 2, 2, 1); +create table t3 ( set_id smallint(5) unsigned not null, id tinyint(4) unsigned not null, name char(12) not null, primary key (id,set_id)); +insert t3 values (0, 1, 'a'), (1, 1, 'b'), (0, 2, 'c'), (1, 2, 'd'), (1, 3, 'e'), (1, 4, 'f'), (1, 5, 'g'), (1, 6, 'h'); +explain select name from t1 left join t2 on t1.x = t2.x and t1.y = t2.y +left join t3 on t1.art = t3.id where t2.id =1 and t2.x = -5 and t2.y =-8 +and t1.gid =1 and t2.gid =1 and t3.set_id =1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 10 const,const,const 1 +1 SIMPLE t2 const PRIMARY,id PRIMARY 14 const,const,const,const 1 Using index +1 SIMPLE t3 const PRIMARY PRIMARY 3 const,const 1 +drop tables t1,t2,t3; +CREATE TABLE t1 (EMPNUM INT, GRP INT); +INSERT INTO t1 VALUES (0, 10); +INSERT INTO t1 VALUES (2, 30); +CREATE TABLE t2 (EMPNUM INT, NAME CHAR(5)); +INSERT INTO t2 VALUES (0, 'KERI'); +INSERT INTO t2 VALUES (9, 'BARRY'); +CREATE VIEW v1 AS +SELECT COALESCE(t2.EMPNUM,t1.EMPNUM) AS EMPNUM, NAME, GRP +FROM t2 LEFT OUTER JOIN t1 ON t2.EMPNUM=t1.EMPNUM; +SELECT * FROM v1; +EMPNUM NAME GRP +0 KERI 10 +9 BARRY NULL +SELECT * FROM v1 WHERE EMPNUM < 10; +EMPNUM NAME GRP +0 KERI 10 +9 BARRY NULL +DROP VIEW v1; +DROP TABLE t1,t2; +CREATE TABLE t1 (c11 int); +CREATE TABLE t2 (c21 int); +INSERT INTO t1 VALUES (30), (40), (50); +INSERT INTO t2 VALUES (300), (400), (500); +SELECT * FROM t1 LEFT JOIN t2 ON (c11=c21 AND c21=30) WHERE c11=40; +c11 c21 +40 NULL +DROP TABLE t1, t2; +CREATE TABLE t1 (a int PRIMARY KEY, b int); +CREATE TABLE t2 (a int PRIMARY KEY, b int); +INSERT INTO t1 VALUES (1,2), (2,1), (3,2), (4,3), (5,6), (6,5), (7,8), (8,7), (9,10); +INSERT INTO t2 VALUES (3,0), (4,1), (6,4), (7,5); +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b <= t1.a AND t1.a <= t1.b; +a b a b +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a BETWEEN t2.b AND t1.b; +a b a b +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT BETWEEN t2.b AND t1.b); +a b a b +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b > t1.a OR t1.a > t1.b; +a b a b +2 1 NULL NULL +3 2 3 0 +4 3 4 1 +6 5 6 4 +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT BETWEEN t2.b AND t1.b; +a b a b +2 1 NULL NULL +3 2 3 0 +4 3 4 1 +6 5 6 4 +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a BETWEEN t2.b AND t1.b); +a b a b +2 1 NULL NULL +3 2 3 0 +4 3 4 1 +6 5 6 4 +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t2.b > t1.a OR t1.a > t1.b; +a b a b +2 1 NULL NULL +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a AND t1.a BETWEEN t2.b AND t1.b); +a b a b +2 1 NULL NULL +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a AND (t2.b > t1.a OR t1.a > t1.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a OR t1.a BETWEEN t2.b AND t1.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT IN(t2.a, t2.b)); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a != t1.b AND t1.a != t2.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT IN(t1.b, t2.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a IN(t1.b, t2.b)); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b OR (t1.a != t2.a AND t1.a != t2.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b AND t1.a IN(t2.a, t2.b)); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b AND t1.a != t1.b AND t1.a != t2.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b OR t1.a IN(t1.b, t2.b)); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4 +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a > IF(t1.a = t2.b-2, t2.b, t2.b-1); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +DROP TABLE t1,t2; +DROP VIEW IF EXISTS v1,v2; +DROP TABLE IF EXISTS t1,t2; +CREATE TABLE t1 (a int); +CREATE table t2 (b int); +INSERT INTO t1 VALUES (1), (2), (3), (4), (1), (1), (3); +INSERT INTO t2 VALUES (2), (3); +CREATE VIEW v1 AS SELECT a FROM t1 JOIN t2 ON t1.a=t2.b; +CREATE VIEW v2 AS SELECT b FROM t2 JOIN t1 ON t2.b=t1.a; +SELECT v1.a, v2. b +FROM v1 LEFT OUTER JOIN v2 ON (v1.a=v2.b) AND (v1.a >= 3) +GROUP BY v1.a; +a b +2 NULL +3 3 +SELECT v1.a, v2. b +FROM { OJ v1 LEFT OUTER JOIN v2 ON (v1.a=v2.b) AND (v1.a >= 3) } +GROUP BY v1.a; +a b +2 NULL +3 3 +DROP VIEW v1,v2; +DROP TABLE t1,t2; +CREATE TABLE t1 (a int); +CREATE TABLE t2 (b int); +INSERT INTO t1 VALUES (1), (2), (3), (4); +INSERT INTO t2 VALUES (2), (3); +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1); +a b +1 NULL +2 2 +3 3 +4 NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1 OR 1); +a b +1 NULL +2 2 +3 3 +4 NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (0 OR 1); +a b +1 NULL +2 2 +3 3 +4 NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1 OR 2=2); +a b +1 NULL +2 2 +3 3 +4 NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1 OR 1=0); +a b +1 NULL +2 2 +3 3 +4 NULL +DROP TABLE t1,t2; +CREATE TABLE t1 ( +f1 varchar(16) collate latin1_swedish_ci PRIMARY KEY, +f2 varchar(16) collate latin1_swedish_ci +); +CREATE TABLE t2 ( +f1 varchar(16) collate latin1_swedish_ci PRIMARY KEY, +f3 varchar(16) collate latin1_swedish_ci +); +INSERT INTO t1 VALUES ('bla','blah'); +INSERT INTO t2 VALUES ('bla','sheep'); +SELECT * FROM t1 JOIN t2 USING(f1) WHERE f1='Bla'; +f1 f2 f3 +bla blah sheep +SELECT * FROM t1 LEFT JOIN t2 USING(f1) WHERE f1='bla'; +f1 f2 f3 +bla blah sheep +SELECT * FROM t1 LEFT JOIN t2 USING(f1) WHERE f1='Bla'; +f1 f2 f3 +bla blah sheep +DROP TABLE t1,t2; +CREATE TABLE t1 (id int PRIMARY KEY, a varchar(8)); +CREATE TABLE t2 (id int NOT NULL, b int NOT NULL, INDEX idx(id)); +INSERT INTO t1 VALUES +(1,'aaaaaaa'), (5,'eeeeeee'), (4,'ddddddd'), (2,'bbbbbbb'), (3,'ccccccc'); +INSERT INTO t2 VALUES +(3,10), (2,20), (5,30), (3,20), (5,10), (3,40), (3,30), (2,10), (2,40); +EXPLAIN +SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ref idx idx 4 test.t1.id 2 Using where; Not exists; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +flush status; +SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL; +id a +1 aaaaaaa +4 ddddddd +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 5 +Handler_read_last 0 +Handler_read_next 9 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 3 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 6 +DROP TABLE t1,t2; +CREATE TABLE t1 (c int PRIMARY KEY, e int NOT NULL); +INSERT INTO t1 VALUES (1,0), (2,1); +CREATE TABLE t2 (d int PRIMARY KEY); +INSERT INTO t2 VALUES (1), (2), (3); +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 index NULL PRIMARY 4 NULL 3 Using where; Using index; Not exists +SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d IS NULL; +c e d +1 0 NULL +SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d<=>NULL; +c e d +1 0 NULL +DROP TABLE t1,t2; +# +# Bug#47650: using group by with rollup without indexes returns incorrect +# results with where +# +CREATE TABLE t1 ( a INT ); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 ( a INT, b INT ); +INSERT INTO t2 VALUES (1, 1),(1, 2),(1, 3),(2, 4),(2, 5); +EXPLAIN +SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) +FROM t1 LEFT JOIN t2 USING( a ) +GROUP BY t1.a WITH ROLLUP; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 Using temporary; Using filesort +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where +SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) +FROM t1 LEFT JOIN t2 USING( a ) +GROUP BY t1.a WITH ROLLUP; +a COUNT( t2.b ) SUM( t2.b ) MAX( t2.b ) +1 3 6 3 +NULL 3 6 3 +EXPLAIN +SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) +FROM t1 JOIN t2 USING( a ) +GROUP BY t1.a WITH ROLLUP; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where; Using filesort +SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) +FROM t1 JOIN t2 USING( a ) +GROUP BY t1.a WITH ROLLUP; +a COUNT( t2.b ) SUM( t2.b ) MAX( t2.b ) +1 3 6 3 +NULL 3 6 3 +DROP TABLE t1, t2; +# +# Bug#51598 Inconsistent behaviour with a COALESCE statement inside an IN comparison +# +CREATE TABLE t1(f1 INT, f2 INT, f3 INT); +INSERT INTO t1 VALUES (1, NULL, 3); +CREATE TABLE t2(f1 INT, f2 INT); +INSERT INTO t2 VALUES (2, 1); +EXPLAIN EXTENDED SELECT * FROM t1 LEFT JOIN t2 ON t1.f2 = t2.f2 +WHERE (COALESCE(t1.f1, t2.f1), f3) IN ((1, 3), (2, 2)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +1 SIMPLE t2 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select 1 AS `f1`,NULL AS `f2`,3 AS `f3`,NULL AS `f1`,NULL AS `f2` from `test`.`t2` where 1 +SELECT * FROM t1 LEFT JOIN t2 ON t1.f2 = t2.f2 +WHERE (COALESCE(t1.f1, t2.f1), f3) IN ((1, 3), (2, 2)); +f1 f2 f3 f1 f2 +1 NULL 3 NULL NULL +DROP TABLE t1, t2; +# +# Bug#52357: Assertion failed: join->best_read in greedy_search +# optimizer_search_depth=0 +# +CREATE TABLE t1( a INT ); +INSERT INTO t1 VALUES (1),(2); +SET optimizer_search_depth = 0; +# Should not core dump on query preparation +EXPLAIN +SELECT 1 +FROM t1 tt3 LEFT OUTER JOIN t1 tt4 ON 1 +LEFT OUTER JOIN t1 tt5 ON 1 +LEFT OUTER JOIN t1 tt6 ON 1 +LEFT OUTER JOIN t1 tt7 ON 1 +LEFT OUTER JOIN t1 tt8 ON 1 +RIGHT OUTER JOIN t1 tt2 ON 1 +RIGHT OUTER JOIN t1 tt1 ON 1 +STRAIGHT_JOIN t1 tt9 ON 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE tt1 ALL NULL NULL NULL NULL 2 +1 SIMPLE tt2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +1 SIMPLE tt3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt4 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt5 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt6 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt7 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt8 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt9 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join) +SET optimizer_search_depth = DEFAULT; +DROP TABLE t1; +# +# Bug#46091 STRAIGHT_JOIN + RIGHT JOIN returns different result +# +CREATE TABLE t1 (f1 INT NOT NULL); +INSERT INTO t1 VALUES (9),(0); +CREATE TABLE t2 (f1 INT NOT NULL); +INSERT INTO t2 VALUES +(5),(3),(0),(3),(1),(0),(1),(7),(1),(0),(0),(8),(4),(9),(0),(2),(0),(8),(5),(1); +SELECT STRAIGHT_JOIN COUNT(*) FROM t1 TA1 +RIGHT JOIN t2 TA2 JOIN t2 TA3 ON TA2.f1 ON TA3.f1; +COUNT(*) +476 +EXPLAIN SELECT STRAIGHT_JOIN COUNT(*) FROM t1 TA1 +RIGHT JOIN t2 TA2 JOIN t2 TA3 ON TA2.f1 ON TA3.f1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE TA2 ALL NULL NULL NULL NULL 20 Using where +1 SIMPLE TA3 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +1 SIMPLE TA1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +DROP TABLE t1, t2; +# +# Bug#48971 Segfault in add_found_match_trig_cond () at sql_select.cc:5990 +# +CREATE TABLE t1(f1 INT, PRIMARY KEY (f1)); +INSERT INTO t1 VALUES (1),(2); +EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1 +LEFT JOIN t1 AS jt2 +RIGHT JOIN t1 AS jt3 +JOIN t1 AS jt4 ON 1 +LEFT JOIN t1 AS jt5 ON 1 +ON 1 +RIGHT JOIN t1 AS jt6 ON jt6.f1 +ON 1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using index +1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join) +1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt1` left join (`test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on(`test`.`jt6`.`f1` <> 0 and 1)) on(1) where 1 +EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1 +RIGHT JOIN t1 AS jt2 +RIGHT JOIN t1 AS jt3 +JOIN t1 AS jt4 ON 1 +LEFT JOIN t1 AS jt5 ON 1 +ON 1 +RIGHT JOIN t1 AS jt6 ON jt6.f1 +ON 1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using index +1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join) +1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on(`test`.`jt6`.`f1` <> 0 and 1) left join `test`.`t1` `jt1` on(1) where 1 +DROP TABLE t1; +# +# Bug#57688 Assertion `!table || (!table->write_set || bitmap_is_set(table->write_set, field +# +CREATE TABLE t1 (f1 INT NOT NULL, PRIMARY KEY (f1)); +CREATE TABLE t2 (f1 INT NOT NULL, f2 INT NOT NULL, PRIMARY KEY (f1, f2)); +INSERT INTO t1 VALUES (4); +INSERT INTO t2 VALUES (3, 3); +INSERT INTO t2 VALUES (7, 7); +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 +GROUP BY t2.f1, t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 Using temporary; Using filesort +1 SIMPLE t2 ref PRIMARY PRIMARY 4 const 1 Using index +SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 +GROUP BY t2.f1, t2.f2; +f1 f1 f2 +4 NULL NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 AND t2.f1 IS NOT NULL AND t2.f2 IS NOT NULL +GROUP BY t2.f1, t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t2 ref PRIMARY PRIMARY 4 const 1 Using where; Using index; Using filesort +SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 AND t2.f1 IS NOT NULL AND t2.f2 IS NOT NULL +GROUP BY t2.f1, t2.f2; +f1 f1 f2 +DROP TABLE t1,t2; +# +# Bug#57034 incorrect OUTER JOIN result when joined on unique key +# +CREATE TABLE t1 (pk INT PRIMARY KEY, +col_int INT, +col_int_unique INT UNIQUE KEY); +INSERT INTO t1 VALUES (1,NULL,2), (2,0,0); +CREATE TABLE t2 (pk INT PRIMARY KEY, +col_int INT, +col_int_unique INT UNIQUE KEY); +INSERT INTO t2 VALUES (1,0,1), (2,0,2); +EXPLAIN +SELECT * FROM t1 LEFT JOIN t2 +ON t1.col_int_unique = t2.col_int_unique AND t1.col_int = t2.col_int +WHERE t1.pk=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 const col_int_unique col_int_unique 5 const 1 +SELECT * FROM t1 LEFT JOIN t2 +ON t1.col_int_unique = t2.col_int_unique AND t1.col_int = t2.col_int +WHERE t1.pk=1; +pk col_int col_int_unique pk col_int col_int_unique +1 NULL 2 NULL NULL NULL +DROP TABLE t1,t2; +# +# Bug#48046 Server incorrectly processing JOINs on NULL values +# +CREATE TABLE `BB` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`time_key` time DEFAULT NULL, +`varchar_key` varchar(1) DEFAULT NULL, +`varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `time_key` (`time_key`), +KEY `varchar_key` (`varchar_key`) +) ENGINE=MyISAM AUTO_INCREMENT=11 DEFAULT CHARSET=latin1; +INSERT INTO `BB` VALUES (10,'18:27:58',NULL,NULL); +SELECT table1.time_key AS field1, table2.pk +FROM BB table1 LEFT JOIN BB table2 +ON table2.varchar_nokey = table1.varchar_key +HAVING field1; +field1 pk +18:27:58 NULL +DROP TABLE BB; +# +# Bug#49600 Server incorrectly processing RIGHT JOIN with +# constant WHERE clause and no index +# +CREATE TABLE `BB` ( +`col_datetime_key` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +KEY `col_datetime_key` (`col_datetime_key`), +KEY `col_varchar_key` (`col_varchar_key`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1; +INSERT INTO `BB` VALUES ('1900-01-01 00:00:00',NULL,NULL); +SELECT table1.col_datetime_key +FROM BB table1 RIGHT JOIN BB table2 +ON table2 .col_varchar_nokey = table1.col_varchar_key +WHERE 7; +col_datetime_key +NULL +ALTER TABLE BB DISABLE KEYS; +SELECT table1.col_datetime_key +FROM BB table1 RIGHT JOIN BB table2 +ON table2 .col_varchar_nokey = table1.col_varchar_key +WHERE 7; +col_datetime_key +NULL +DROP TABLE BB; +# +# Bug#58490: Incorrect result in multi level OUTER JOIN +# in combination with IS NULL +# +CREATE TABLE t1 (i INT NOT NULL); +INSERT INTO t1 VALUES (0), (2),(3),(4); +CREATE TABLE t2 (i INT NOT NULL); +INSERT INTO t2 VALUES (0),(1), (3),(4); +CREATE TABLE t3 (i INT NOT NULL); +INSERT INTO t3 VALUES (0),(1),(2), (4); +CREATE TABLE t4 (i INT NOT NULL); +INSERT INTO t4 VALUES (0),(1),(2),(3) ; +SELECT * FROM +t1 LEFT JOIN +( t2 LEFT JOIN +( t3 LEFT JOIN +t4 +ON t4.i = t3.i +) +ON t3.i = t2.i +) +ON t2.i = t1.i +; +i i i i +0 0 0 0 +2 NULL NULL NULL +3 3 NULL NULL +4 4 4 NULL +SELECT * FROM +t1 LEFT JOIN +( t2 LEFT JOIN +( t3 LEFT JOIN +t4 +ON t4.i = t3.i +) +ON t3.i = t2.i +) +ON t2.i = t1.i +WHERE t4.i IS NULL; +i i i i +2 NULL NULL NULL +3 3 NULL NULL +4 4 4 NULL +SELECT * FROM +t1 LEFT JOIN +( ( t2 LEFT JOIN +t3 +ON t3.i = t2.i +) +) +ON t2.i = t1.i +WHERE t3.i IS NULL; +i i i +2 NULL NULL +3 3 NULL +SELECT * FROM +t1 LEFT JOIN +( ( t2 LEFT JOIN +t3 +ON t3.i = t2.i +) +JOIN t4 +ON t4.i=t2.i +) +ON t2.i = t1.i +WHERE t3.i IS NULL; +i i i i +2 NULL NULL NULL +3 3 NULL 3 +4 NULL NULL NULL +SELECT * FROM +t1 LEFT JOIN +( ( t2 LEFT JOIN +t3 +ON t3.i = t2.i +) +JOIN (t4 AS t4a JOIN t4 AS t4b ON t4a.i=t4b.i) +ON t4a.i=t2.i +) +ON t2.i = t1.i +WHERE t3.i IS NULL; +i i i i i +2 NULL NULL NULL NULL +3 3 NULL 3 3 +4 NULL NULL NULL NULL +SELECT * FROM +t1 LEFT JOIN +( ( t2 LEFT JOIN +t3 +ON t3.i = t2.i +) +JOIN (t4 AS t4a, t4 AS t4b) +ON t4a.i=t2.i +) +ON t2.i = t1.i +WHERE t3.i IS NULL; +i i i i i +2 NULL NULL NULL NULL +3 3 NULL 3 0 +3 3 NULL 3 1 +3 3 NULL 3 2 +3 3 NULL 3 3 +4 NULL NULL NULL NULL +DROP TABLE t1,t2,t3,t4; +# +# Bug#49322(Duplicate): Server is adding extra NULL row +# on processing a WHERE clause +# +CREATE TABLE h (pk INT NOT NULL, col_int_key INT); +INSERT INTO h VALUES (1,NULL),(4,2),(5,2),(3,4),(2,8); +CREATE TABLE m (pk INT NOT NULL, col_int_key INT); +INSERT INTO m VALUES (1,2),(2,7),(3,5),(4,7),(5,5),(6,NULL),(7,NULL),(8,9); +CREATE TABLE k (pk INT NOT NULL, col_int_key INT); +INSERT INTO k VALUES (1,9),(2,2),(3,5),(4,2),(5,7),(6,0),(7,5); +SELECT TABLE1.pk FROM k TABLE1 +RIGHT JOIN h TABLE2 ON TABLE1.col_int_key=TABLE2.col_int_key +RIGHT JOIN m TABLE4 ON TABLE2.col_int_key=TABLE4.col_int_key; +pk +2 +2 +4 +4 +NULL +NULL +NULL +NULL +NULL +NULL +NULL +SELECT TABLE1.pk FROM k TABLE1 +RIGHT JOIN h TABLE2 ON TABLE1.col_int_key=TABLE2.col_int_key +RIGHT JOIN m TABLE4 ON TABLE2.col_int_key=TABLE4.col_int_key +WHERE TABLE1.pk IS NULL; +pk +NULL +NULL +NULL +NULL +NULL +NULL +NULL +DROP TABLE h,m,k; + +# BUG#12567331 - INFINITE LOOP WHEN RESOLVING AN ALIASED COLUMN +# USED IN GROUP BY + +CREATE TABLE t1 ( +col_varchar_1024_latin1_key varchar(1024), +col_varchar_10_latin1 varchar(10), +col_int int(11), +pk int(11) +); +CREATE TABLE t2 ( +col_int_key int(11), +col_int int(11), +pk int(11) +); +PREPARE prep_stmt_9846 FROM ' +SELECT alias1.pk AS field1 FROM +t1 AS alias1 +LEFT JOIN +( + t2 AS alias2 + RIGHT JOIN + ( + t2 AS alias3 + JOIN t1 AS alias4 + ON 1 + ) + ON 1 +) +ON 1 +GROUP BY field1'; +execute prep_stmt_9846; +field1 +execute prep_stmt_9846; +field1 +drop table t1,t2; +# +# Bug #11765810 58813: SERVER THREAD HANGS WHEN JOIN + WHERE + GROUP BY +# IS EXECUTED TWICE FROM P +# +CREATE TABLE t1 ( a INT ) ENGINE = MYISAM; +INSERT INTO t1 VALUES (1); +PREPARE prep_stmt FROM ' + SELECT 1 AS f FROM t1 + LEFT JOIN t1 t2 + RIGHT JOIN t1 t3 + JOIN t1 t4 + ON 1 + ON 1 + ON 1 + GROUP BY f'; +EXECUTE prep_stmt; +f +1 +EXECUTE prep_stmt; +f +1 +DROP TABLE t1; +# +# Bug#49600: outer join of two single-row tables with joining attributes +# evaluated to nulls +create table t1 (a int, b int); +create table t2 (a int, b int); +insert into t1 values (1, NULL); +insert into t2 values (2, NULL); +select * from t1 left join t2 on t1.b=t2.b; +a b a b +1 NULL NULL NULL +select * from t1 left join t2 on t1.b=t2.b where 1=1; +a b a b +1 NULL NULL NULL +drop table t1,t2; +# +# Bug#53161: outer join in the derived table is erroneously converted +# into an inner join for a query with a group by clause +# +create table t1 (pk int not null primary key, a int not null); +create table t2 like t1; +create table t3 like t1; +create table t4 (pk int not null primary key); +insert into t1 values (1000, 1), (1001, 1); +insert into t2 values (2000, 2), (2001, 2); +insert into t3 values (3000, 3), (3001, 2); +insert into t4 values (4000), (4001); +explain extended +select t2.pk, +(select t3.pk+if(isnull(t4.pk),0,t4.pk) +from t3 left join t4 on t4.pk=t3.pk +where t3.pk=t2.pk+1000 limit 1 ) as t +from t1,t2 +where t2.pk=t1.pk+1000 and t1.pk>1000 +group by t2.pk; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using index; Using temporary; Using filesort +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t3.pk 1 100.00 Using index +Warnings: +Note 1276 Field or reference 'test.t2.pk' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ select `test`.`t2`.`pk` AS `pk`,<expr_cache><`test`.`t2`.`pk`>((/* select#2 */ select `test`.`t3`.`pk` + if(`test`.`t4`.`pk` is null,0,`test`.`t4`.`pk`) from `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`pk` = `test`.`t3`.`pk`) where `test`.`t3`.`pk` = `test`.`t2`.`pk` + 1000 limit 1)) AS `t` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`pk` = `test`.`t1`.`pk` + 1000 and `test`.`t1`.`pk` > 1000 group by `test`.`t2`.`pk` +select t2.pk, +(select t3.pk+if(isnull(t4.pk),0,t4.pk) +from t3 left join t4 on t4.pk=t3.pk +where t3.pk=t2.pk+1000 limit 1 ) as t +from t1,t2 +where t2.pk=t1.pk+1000 and t1.pk>1000 +group by t2.pk; +pk t +2001 3001 +drop table t1,t2,t3,t4; +# +# Bug#57024: Poor performance when conjunctive condition over the outer +# table is used in the on condition of an outer join +# +create table t1 (a int); +insert into t1 values (NULL), (NULL), (NULL), (NULL); +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 values (4), (2), (1), (3); +create table t2 like t1; +insert into t2 select if(t1.a is null, 10, t1.a) from t1; +create table t3 (a int, b int, index idx(a)); +insert into t3 values (1, 100), (3, 301), (4, 402), (1, 102), (1, 101); +insert into t3 values (11, 100), (33, 301), (44, 402), (11, 102), (11, 101); +insert into t3 values (22, 100), (53, 301), (64, 402), (22, 102), (22, 101); +analyze table t1,t2,t3; +Table Op Msg_type Msg_text +test.t1 analyze status OK +test.t2 analyze status OK +test.t3 analyze status OK +flush status; +select sum(t3.b) from t1 left join t3 on t3.a=t1.a and t1.a is not null; +sum(t3.b) +1006 +show status like "handler_read%"; +Variable_name Value +Handler_read_first 0 +Handler_read_key 4 +Handler_read_last 0 +Handler_read_next 5 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 5 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 1048581 +flush status; +select sum(t3.b) from t2 left join t3 on t3.a=t2.a and t2.a <> 10; +sum(t3.b) +1006 +show status like "handler_read%"; +Variable_name Value +Handler_read_first 0 +Handler_read_key 4 +Handler_read_last 0 +Handler_read_next 5 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 5 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 1048581 +drop table t1,t2,t3; +# +# Bug#57688 Assertion `!table || (!table->write_set || bitmap_is_set(table->write_set, field +# +CREATE TABLE t1 (f1 INT NOT NULL, PRIMARY KEY (f1)); +CREATE TABLE t2 (f1 INT NOT NULL, f2 INT NOT NULL, PRIMARY KEY (f1, f2)); +INSERT INTO t1 VALUES (4); +INSERT INTO t2 VALUES (3, 3); +INSERT INTO t2 VALUES (7, 7); +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 +GROUP BY t2.f1, t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 Using temporary; Using filesort +1 SIMPLE t2 ref PRIMARY PRIMARY 4 const 1 Using index +SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 +GROUP BY t2.f1, t2.f2; +f1 f1 f2 +4 NULL NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 AND t2.f1 IS NOT NULL AND t2.f2 IS NOT NULL +GROUP BY t2.f1, t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t2 ref PRIMARY PRIMARY 4 const 1 Using where; Using index; Using filesort +SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 AND t2.f1 IS NOT NULL AND t2.f2 IS NOT NULL +GROUP BY t2.f1, t2.f2; +f1 f1 f2 +DROP TABLE t1,t2; +# +# Bug#13068506 - QUERY WITH GROUP BY ON NON-AGGR COLUMN RETURNS +# WRONG RESULT +# +CREATE TABLE t1 (i1 int); +INSERT INTO t1 VALUES (100), (101); +CREATE TABLE t2 (i2 int, i3 int); +INSERT INTO t2 VALUES (20,1),(10,2); +CREATE TABLE t3 (i4 int(11)); +INSERT INTO t3 VALUES (1),(2); + +SELECT ( +SELECT MAX( t2.i2 ) +FROM t3 RIGHT JOIN t2 ON ( t2.i3 = 2 ) +WHERE t2.i3 <> t1.i1 +) AS field1 +FROM t1;; +field1 +20 +20 + +SELECT ( +SELECT MAX( t2.i2 ) +FROM t3 RIGHT JOIN t2 ON ( t2.i3 = 2 ) +WHERE t2.i3 <> t1.i1 +) AS field1 +FROM t1 GROUP BY field1;; +field1 +20 + +drop table t1,t2,t3; +# End of test for Bug#13068506 +End of 5.1 tests +# +# LP BUG#994392: Wrong result with RIGHT/LEFT JOIN and ALL subquery +# predicate in WHERE condition. +# +CREATE TABLE t1(a INT); +INSERT INTO t1 VALUES(9); +CREATE TABLE t2(b INT); +INSERT INTO t2 VALUES(8); +CREATE TABLE t3(c INT); +INSERT INTO t3 VALUES(3); +SELECT * FROM t2 RIGHT JOIN t3 ON(c = b) WHERE b < ALL(SELECT a FROM t1 WHERE a <= 7); +b c +NULL 3 +SELECT * FROM t3 LEFT JOIN t2 ON(c = b) WHERE b < ALL(SELECT a FROM t1 WHERE a <= 7); +c b +3 NULL +SELECT * FROM t2 RIGHT JOIN t3 ON(c = b) WHERE b not in (SELECT a FROM t1 WHERE a <= 7); +b c +NULL 3 +SELECT * FROM t3 LEFT JOIN t2 ON(c = b) WHERE b not in (SELECT a FROM t1 WHERE a <= 7); +c b +3 NULL +drop table t1,t2,t3; +End of 5.2 tests +# +# LP bug #813447: LEFT JOIN with single-row inner table and +# a subquery in ON expression +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (0); +CREATE TABLE t2 (a int); +INSERT INTO t2 VALUES (0); +CREATE TABLE t3 (a int); +INSERT INTO t3 VALUES (0), (0); +SELECT t2.a FROM t1 LEFT JOIN t2 ON (6) IN (SELECT a FROM t3); +a +NULL +EXPLAIN EXTENDED +SELECT t2.a FROM t1 LEFT JOIN t2 ON (6) IN (SELECT a FROM t3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t2 system NULL NULL NULL NULL 1 100.00 +2 SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 /* select#1 */ select NULL AS `a` from `test`.`t2` where 1 +DROP TABLE t1,t2,t3; +# +# LP bug #817384 Wrong result with outer join + subquery in ON +# clause +unique key +# +CREATE TABLE t1 ( c int NOT NULL , b char(1) NOT NULL ) ; +INSERT INTO t1 VALUES (1,'b'); +CREATE TABLE t2 ( a int NOT NULL , b char(1) NOT NULL , PRIMARY KEY (a)) ; +INSERT INTO t2 VALUES (1,'a'); +create table t3 (c1 char(1), c2 char(2)); +insert into t3 values ('c','d'); +insert into t3 values ('c','d'); +EXPLAIN SELECT t2.b +FROM t1 LEFT JOIN t2 ON t1.c = t2.a AND ( t2.b , t1.b ) IN (SELECT * from t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 const 1 Using where +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where +SELECT t2.b +FROM t1 LEFT JOIN t2 ON t1.c = t2.a AND ( t2.b , t1.b ) IN (SELECT * from t3); +b +NULL +EXPLAIN SELECT t2.b +FROM t1 LEFT JOIN t2 ON (t2.b) IN (SELECT c2 from t3) AND t2.a = 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +1 PRIMARY t2 const PRIMARY PRIMARY 4 const 1 Using where +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where +SELECT t2.b +FROM t1 LEFT JOIN t2 ON (t2.b) IN (SELECT c2 from t3) AND t2.a = 1; +b +NULL +DROP TABLE t1,t2,t3; +# +# lp:825035 second execution of PS with outer join +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (1),(2),(3),(4); +CREATE TABLE t2 (a int); +PREPARE stmt FROM +"SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a"; +EXECUTE stmt; +a a +1 NULL +2 NULL +3 NULL +4 NULL +EXECUTE stmt; +a a +1 NULL +2 NULL +3 NULL +4 NULL +DEALLOCATE PREPARE stmt; +DROP TABLE t1,t2; +# +# lp:838633 second execution of PS with outer join +# converted to inner join +# +CREATE TABLE t1 ( b int NOT NULL ) ; +INSERT INTO t1 VALUES (9),(10); +CREATE TABLE t2 ( b int NOT NULL, PRIMARY KEY (b)) ; +INSERT INTO t2 VALUES +(75),(76),(77),(78),(79),(80),(81),(82),(83),(84),(85),(86),(87),(88),(89), +(10), (90),(91),(92),(93),(94),(95),(96),(97),(98),(99),(100); +CREATE TABLE t3 ( a int, b int NOT NULL , PRIMARY KEY (b)) ; +INSERT INTO t3 VALUES +(0,6),(0,7),(0,8),(2,9),(0,10),(2,21),(0,22),(2,23),(2,24),(2,25); +SET SESSION join_cache_level=4; +EXPLAIN EXTENDED +SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t3 hash_ALL PRIMARY #hash#PRIMARY 4 test.t1.b 10 10.00 Using join buffer (flat, BNLH join) +1 SIMPLE t2 hash_index PRIMARY #hash#PRIMARY:PRIMARY 4:4 test.t1.b 27 3.70 Using index; Using join buffer (incremental, BNLH join) +Warnings: +Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t1`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t2` join `test`.`t1` join `test`.`t3` where `test`.`t3`.`b` = `test`.`t1`.`b` and `test`.`t2`.`b` = `test`.`t1`.`b` +PREPARE stmt FROM +'SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b'; +EXECUTE stmt; +b b a b +10 10 0 10 +EXECUTE stmt; +b b a b +10 10 0 10 +DEALLOCATE PREPARE stmt; +SET SESSION join_cache_level=default; +DROP TABLE t1,t2,t3; +# +# LP bug #943543: LEFT JOIN converted to JOIN with +# ORed IS NULL(primary key) in WHERE clause +# +CREATE TABLE t1 ( +a int, b int NOT NULL, pk int NOT NULL, +PRIMARY KEY (pk), INDEX idx(b) +); +INSERT INTO t1 VALUES +(NULL,1,1), (6,2,2), (5,3,3), (NULL,4,4), +(1,9,6), (8,5,7), (NULL,8,8), (8,1,5); +CREATE TABLE t2 (pk int PRIMARY KEY); +INSERT INTO t2 VALUES (3), (8), (5); +EXPLAIN EXTENDED +SELECT t1.pk FROM t2 JOIN t1 ON t2.pk = t1.a +WHERE t1.b BETWEEN 5 AND 6 AND t1.pk IS NULL OR t1.pk = 5 +ORDER BY t1.pk; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 100.00 +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 100.00 Using index +Warnings: +Note 1003 select 5 AS `pk` from `test`.`t2` join `test`.`t1` where 1 order by 5 +SELECT t1.pk FROM t2 JOIN t1 ON t2.pk = t1.a +WHERE t1.b BETWEEN 5 AND 6 AND t1.pk IS NULL OR t1.pk = 5 +ORDER BY t1.pk; +pk +5 +EXPLAIN EXTENDED +SELECT t1.pk FROM t2 LEFT JOIN t1 ON t2.pk = t1.a +WHERE t1.b BETWEEN 5 AND 6 AND t1.pk IS NULL OR t1.pk = 5 +ORDER BY t1.pk; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 const PRIMARY,idx PRIMARY 4 const 1 100.00 +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 100.00 Using index +Warnings: +Note 1003 select 5 AS `pk` from `test`.`t2` join `test`.`t1` where 1 order by 5 +SELECT t1.pk FROM t2 LEFT JOIN t1 ON t2.pk = t1.a +WHERE t1.b BETWEEN 5 AND 6 AND t1.pk IS NULL OR t1.pk = 5 +ORDER BY t1.pk; +pk +5 +DROP TABLE t2; +CREATE TABLE t2 (c int, d int, KEY (c)); +INSERT INTO t2 VALUES +(3,30), (8,88), (5,50), (8,81), +(4,40), (9,90), (7,70), (9,90), +(13,130), (18,188), (15,150), (18,181), +(14,140), (19,190), (17,170), (19,190); +INSERT INTO t1 VALUES (8,5,9); +EXPLAIN EXTENDED +SELECT t1.b, t2.c, t2.d FROM t2 JOIN t1 ON t2.c = t1.a +WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5 +ORDER BY t1.b; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ref idx idx 4 const 2 100.00 Using where +1 SIMPLE t2 ref c c 5 test.t1.a 2 100.00 +Warnings: +Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2` join `test`.`t1` where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t1`.`b` = 5 order by `test`.`t1`.`b` +SELECT t1.b, t2.c, t2.d FROM t2 JOIN t1 ON t2.c = t1.a +WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5 +ORDER BY t1.b; +b c d +5 8 88 +5 8 81 +5 8 88 +5 8 81 +EXPLAIN EXTENDED +SELECT t1.b, t2.c, t2.d FROM t2 LEFT JOIN t1 ON t2.c = t1.a +WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5 +ORDER BY t1.b; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ref PRIMARY,idx idx 4 const 2 100.00 Using where +1 SIMPLE t2 ref c c 5 test.t1.a 2 100.00 +Warnings: +Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2` join `test`.`t1` where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t1`.`b` = 5 order by `test`.`t1`.`b` +SELECT t1.b, t2.c, t2.d FROM t2 LEFT JOIN t1 ON t2.c = t1.a +WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5 +ORDER BY t1.b; +b c d +5 8 88 +5 8 81 +5 8 88 +5 8 81 +DROP TABLE t1,t2; +# +# Bug mdev-4336: LEFT JOIN with disjunctive +# <non-nullable datetime field> IS NULL in WHERE +# causes a hang and eventual crash +# +CREATE TABLE t1 ( +id int(11) NOT NULL, +modified datetime NOT NULL, +PRIMARY KEY (id) +); +SELECT a.* FROM t1 a LEFT JOIN t1 b ON a.id = b.id +WHERE a.modified > b.modified or b.modified IS NULL; +id modified +DROP TABLE t1; +# +# MDEV-4817: Optimizer fails to optimize expression of the form 'FOO' IS NULL +# +create table t0 (a int not null); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +alter table t0 add person_id varchar(255) not null; +create table t1 (pk int not null primary key); +insert into t1 select A.a + 10*B.a from t0 A, t0 B; +explain select * from t1 left join t0 on t0.a=t1.pk where t0.person_id='fooo' or 'xyz' IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 10 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 Using index +explain select * from t1 left join t0 on t0.a=t1.pk where t0.person_id='fooo'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 10 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 Using index +explain select * from t1 left join t0 on t0.a=t1.pk where t0.person_id='fooo' or t0.person_id='bar'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 10 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 Using index +drop table t0, t1; +# +# MDEV-4836: Wrong result on <not null date column> IS NULL (old documented hack stopped working) +# (this is a regression after fix for MDEV-4817) +# +CREATE TABLE t1 (id INT, d DATE NOT NULL); +INSERT INTO t1 VALUES (1,'0000-00-00'),(2,'0000-00-00'); +CREATE TABLE t2 (i INT); +SELECT * FROM t1 LEFT JOIN t2 ON (id=i) WHERE NULL OR d IS NULL; +id d i +1 0000-00-00 NULL +2 0000-00-00 NULL +DROP TABLE t1,t2; +CREATE TABLE t1 (i1 INT, d1 DATE NOT NULL); +INSERT INTO t1 VALUES (1,'2012-12-21'),(2,'0000-00-00'); +CREATE TABLE t2 (i2 INT, j2 INT); +INSERT INTO t2 VALUES (1,10),(2,20); +SELECT * FROM t1 LEFT JOIN t2 ON i1 = j2 WHERE d1 IS NULL AND 1 OR i1 = i2; +i1 d1 i2 j2 +2 0000-00-00 NULL NULL +DROP TABLE t1,t2; +# Another testcase +CREATE TABLE t1 (i1 INT) ENGINE=MyISAM; +INSERT INTO t1 VALUES (NULL); +CREATE TABLE t2 (i2 INT, a INT, b INT) ENGINE=MyISAM; +CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2; +INSERT INTO t2 VALUES (NULL,1,2),(NULL,2,3); +SELECT * FROM t1 LEFT JOIN v2 ON i1 = i2 WHERE a < b; +i1 i2 a b +SELECT * FROM t1 LEFT JOIN t2 ON i1 = i2 WHERE a < b; +i1 i2 a b +drop view v2; +drop table t1,t2; +# +# Bug mdev-4942: LEFT JOIN with conjunctive +# <non-nullable datetime field> IS NULL in WHERE +# causes an assert failure +# +CREATE TABLE t1 ( i1 int, d1 date ); +INSERT INTO t1 VALUES (1,'2001-06-26'), (2,'2000-11-16'); +CREATE TABLE t2 ( i2 int, d2 date NOT NULL ); +INSERT INTO t2 VALUES (3,'2000-03-06'), (4,'2007-09-25'); +SELECT * FROM t1 LEFT JOIN t2 ON i1 = i2 WHERE d1 IS NULL AND d2 IS NULL; +i1 d1 i2 d2 +DROP TABLE t1,t2; +# +# Bug mdev-4952: LEFT JOIN with disjunctive +# <non-nullable datetime field> IS NULL in WHERE +# causes an assert failure +# +CREATE TABLE t1 (a1 int, b1 int NOT NULL) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1, 10), (2, 11); +CREATE TABLE t2 (dt datetime NOT NULL, a2 int, b2 int) ENGINE=MyISAM; +INSERT INTO t2 VALUES +('2006-10-08 09:34:54', 1, 100), ('2001-01-19 01:04:43', 2, 200); +SELECT * FROM t1 LEFT JOIN t2 ON a1 = a2 +WHERE ( dt IS NULL OR FALSE ) AND b2 IS NULL; +a1 b1 dt a2 b2 +DROP TABLE t1,t2; +# +# Bug mdev-4962: nested outer join with +# <non-nullable datetime field> IS NULL in WHERE +# causes an assert failure +# +CREATE TABLE t1 (i1 int) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (i2 int) ENGINE=MyISAM; +INSERT INTO t2 VALUES (10),(20); +CREATE TABLE t3 (i3 int, d3 datetime NOT NULL) ENGINE=MyISAM; +INSERT INTO t3 VALUES (8,'2008-12-04 17:53:42'),(9,'2012-12-21 12:12:12'); +SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON i2 = i3 ON i1 = i3 +WHERE d3 IS NULL; +i1 i2 i3 d3 +1 NULL NULL NULL +2 NULL NULL NULL +EXPLAIN EXTENDED +SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON i2 = i3 ON i1 = i3 +WHERE d3 IS NULL; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t2`.`i2` AS `i2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`d3` AS `d3` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(`test`.`t2`.`i2` = `test`.`t1`.`i1` and `test`.`t3`.`i3` = `test`.`t1`.`i1`) where `test`.`t3`.`d3` = 0 or `test`.`t3`.`d3` is null +DROP TABLE t1,t2,t3; +# +# Bug mdev-6705: wrong on expression after constant row substitution +# that triggers a simplification of WHERE condition +# +CREATE TABLE t1 (a int, b int) ENGINE=MyISAM; +INSERT INTO t1 VALUES (10,8); +CREATE TABLE t2 (c int) ENGINE=MyISAM; +INSERT INTO t2 VALUES (8),(9); +CREATE TABLE t3 (d int) ENGINE=MyISAM; +INSERT INTO t3 VALUES (3),(8); +EXPLAIN EXTENDED +SELECT * FROM t1 INNER JOIN t2 ON c = b LEFT JOIN t3 ON d = a +WHERE b IN (1,2,3) OR b = d; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select 10 AS `a`,8 AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t3`.`d` AS `d` from `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`d` = 10) where `test`.`t2`.`c` = 8 and `test`.`t3`.`d` = 8 +SELECT * FROM t1 INNER JOIN t2 ON c = b LEFT JOIN t3 ON d = a +WHERE b IN (1,2,3) OR b = d; +a b c d +DROP TABLE t1,t2,t3; +# +# MDEV-6634: Wrong estimates for ref(const) and key IS NULL predicate +# +create table t1(a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 (a int, b int, c int, key(b), key(c)); +insert into t2 select +@a:=A.a + 10*B.a+100*C.a, +IF(@a<900, NULL, @a), +IF(@a<500, NULL, @a) +from t1 A, t1 B, t1 C; +delete from t1 where a=0; +# Check that there are different #rows of NULLs for b and c, both !=10: +explain select * from t2 force index (b) where b is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref b b 5 const 780 Using index condition +explain select * from t2 force index (c) where c is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref c c 5 const 393 Using index condition +explain select * from t1 left join t2 on t2.b is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 9 +1 SIMPLE t2 ref b b 5 const 780 Using where +explain select * from t1 left join t2 on t2.c is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 9 +1 SIMPLE t2 ref c c 5 const 393 Using where +drop table t1,t2; +# +# MDEV-10006: optimizer doesn't convert outer join to inner on views with WHERE clause +# +CREATE TABLE t1(i1 int primary key, v1 int, key(v1)); +INSERT INTO t1 VALUES (1, 1); +INSERT INTO t1 VALUES (2, 2); +INSERT INTO t1 VALUES (3, 3); +INSERT INTO t1 VALUES (4, 4); +INSERT INTO t1 VALUES (5, 3); +INSERT INTO t1 VALUES (6, 6); +INSERT INTO t1 VALUES (7, 7); +INSERT INTO t1 VALUES (8, 8); +INSERT INTO t1 VALUES (9, 9); +CREATE TABLE t2(i2 int primary key, v2 int, key(v2)); +INSERT INTO t2 VALUES (1, 1); +INSERT INTO t2 VALUES (2, 2); +INSERT INTO t2 VALUES (3, 3); +INSERT INTO t2 VALUES (4, 4); +INSERT INTO t2 VALUES (5, 3); +INSERT INTO t2 VALUES (6, 6); +INSERT INTO t2 VALUES (7, 7); +INSERT INTO t2 VALUES (8, 8); +INSERT INTO t2 VALUES (9, 9); +CREATE TABLE t3(i3 int primary key, v3 int, key(v3)); +INSERT INTO t3 VALUES (2, 2); +INSERT INTO t3 VALUES (4, 4); +INSERT INTO t3 VALUES (6, 6); +INSERT INTO t3 VALUES (8, 8); +# This should have a join order of t3,t1,t2 (or t3,t2,t1, the idea is that t3 is the first one) +EXPLAIN EXTENDED +SELECT * FROM +(SELECT t1.i1 as i1, t1.v1 as v1, +t2.i2 as i2, t2.v2 as v2, +t3.i3 as i3, t3.v3 as v3 +FROM t1 JOIN t2 on t1.i1 = t2.i2 +LEFT JOIN t3 on t2.i2 = t3.i3 +) as w1 +WHERE v3 = 4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t3 ref PRIMARY,v3 v3 5 const 1 100.00 +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 +Warnings: +Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t1`.`v1` AS `v1`,`test`.`t2`.`i2` AS `i2`,`test`.`t2`.`v2` AS `v2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`v3` AS `v3` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`v3` = 4 and `test`.`t1`.`i1` = `test`.`t3`.`i3` and `test`.`t2`.`i2` = `test`.`t3`.`i3` +# This should have the same join order like the query above: +EXPLAIN EXTENDED +SELECT * FROM +(SELECT t1.i1 as i1, t1.v1 as v1, +t2.i2 as i2, t2.v2 as v2, +t3.i3 as i3, t3.v3 as v3 +FROM t1 JOIN t2 on t1.i1 = t2.i2 +LEFT JOIN t3 on t2.i2 = t3.i3 +WHERE t1.i1 = t2.i2 +AND 1 = 1 +) as w2 +WHERE v3 = 4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t3 ref PRIMARY,v3 v3 5 const 1 100.00 +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 +Warnings: +Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t1`.`v1` AS `v1`,`test`.`t2`.`i2` AS `i2`,`test`.`t2`.`v2` AS `v2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`v3` AS `v3` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`v3` = 4 and `test`.`t1`.`i1` = `test`.`t3`.`i3` and `test`.`t2`.`i2` = `test`.`t3`.`i3` +drop table t1,t2,t3; +# +# MDEV-11958: LEFT JOIN with stored routine produces incorrect result +# +CREATE TABLE t (x INT); +INSERT INTO t VALUES(1),(NULL); +CREATE FUNCTION f (val INT, ret INT) RETURNS INT DETERMINISTIC RETURN IFNULL(val, ret); +SELECT t1.x, t2.x, IFNULL(t2.x,0), f(t2.x,0) +FROM t t1 LEFT JOIN t t2 +ON t1.x = t2.x +WHERE IFNULL(t2.x,0)=0; +x x IFNULL(t2.x,0) f(t2.x,0) +NULL NULL 0 0 +explain extended +SELECT t1.x, t2.x, IFNULL(t2.x,0), f(t2.x,0) +FROM t t1 LEFT JOIN t t2 +ON t1.x = t2.x +WHERE IFNULL(t2.x,0)=0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`x` AS `x`,`test`.`t2`.`x` AS `x`,ifnull(`test`.`t2`.`x`,0) AS `IFNULL(t2.x,0)`,`f`(`test`.`t2`.`x`,0) AS `f(t2.x,0)` from `test`.`t` `t1` left join `test`.`t` `t2` on(`test`.`t2`.`x` = `test`.`t1`.`x`) where ifnull(`test`.`t2`.`x`,0) = 0 +SELECT t1.x, t2.x, IFNULL(t2.x,0), f(t2.x,0) +FROM t t1 LEFT JOIN t t2 +ON t1.x = t2.x +WHERE f(t2.x,0)=0; +x x IFNULL(t2.x,0) f(t2.x,0) +NULL NULL 0 0 +explain extended +SELECT t1.x, t2.x, IFNULL(t2.x,0), f(t2.x,0) +FROM t t1 LEFT JOIN t t2 +ON t1.x = t2.x +WHERE f(t2.x,0)=0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`x` AS `x`,`test`.`t2`.`x` AS `x`,ifnull(`test`.`t2`.`x`,0) AS `IFNULL(t2.x,0)`,`f`(`test`.`t2`.`x`,0) AS `f(t2.x,0)` from `test`.`t` `t1` left join `test`.`t` `t2` on(`test`.`t2`.`x` = `test`.`t1`.`x`) where `f`(`test`.`t2`.`x`,0) = 0 +drop function f; +drop table t; +CREATE TABLE t1 ( +col1 DECIMAL(33,5) NULL DEFAULT NULL, +col2 DECIMAL(33,5) NULL DEFAULT NULL +); +CREATE TABLE t2 ( +col1 DECIMAL(33,5) NULL DEFAULT NULL, +col2 DECIMAL(33,5) NULL DEFAULT NULL, +col3 DECIMAL(33,5) NULL DEFAULT NULL +); +INSERT INTO t1 VALUES (2, 1.1), (2, 2.1); +INSERT INTO t2 VALUES (3, 3.1, 4), (1, 1, NULL); +CREATE FUNCTION f1 ( p_num DECIMAL(45,15), p_return DECIMAL(45,15)) +RETURNS decimal(33,5) +LANGUAGE SQL +DETERMINISTIC +CONTAINS SQL +SQL SECURITY INVOKER +BEGIN +IF p_num IS NULL THEN +RETURN p_return; +ELSE +RETURN p_num; +END IF; +END | +SELECT t1.col1, t2.col1, t2.col3 +FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2 +WHERE IFNULL(t2.col3,0) = 0; +col1 col1 col3 +2.00000 NULL NULL +2.00000 NULL NULL +EXPLAIN EXTENDED SELECT t1.col1, t2.col1, t2.col3 +FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2 +WHERE IFNULL(t2.col3,0) = 0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`col1` AS `col1`,`test`.`t2`.`col1` AS `col1`,`test`.`t2`.`col3` AS `col3` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`col2` = `test`.`t1`.`col1`) where ifnull(`test`.`t2`.`col3`,0) = 0 +SELECT t1.col1, t2.col1, t2.col3 +FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2 +WHERE f1(t2.col3,0) = 0; +col1 col1 col3 +2.00000 NULL NULL +2.00000 NULL NULL +EXPLAIN EXTENDED SELECT t1.col1, t2.col1, t2.col3 +FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2 +WHERE f1(t2.col3,0) = 0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`col1` AS `col1`,`test`.`t2`.`col1` AS `col1`,`test`.`t2`.`col3` AS `col3` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`col2` = `test`.`t1`.`col1`) where `f1`(`test`.`t2`.`col3`,0) = 0 +DROP FUNCTION f1; +DROP TABLE t1,t2; +# +# MDEV-10397: Server crashes in key_copy with join_cache_level > 2 and join on BIT fields +# +CREATE TABLE t1 (b1 BIT NOT NULL); +INSERT INTO t1 VALUES (0),(1); +CREATE TABLE t2 (b2 BIT NOT NULL); +INSERT INTO t2 VALUES (0),(1); +set @save_join_cache_level= @@join_cache_level; +SET @@join_cache_level = 3; +SELECT t1.b1+'0' , t2.b2 + '0' FROM t1 LEFT JOIN t2 ON b1 = b2; +t1.b1+'0' t2.b2 + '0' +0 0 +1 1 +DROP TABLE t1, t2; +set @join_cache_level= @save_join_cache_level; +# +# MDEV-14779: using left join causes incorrect results with materialization and derived tables +# +create table t1(id int); +insert into t1 values (1),(2); +create table t2(sid int, id int); +insert into t2 values (1,1),(2,2); +select * from t1 t +left join (select * from t2 where sid in (select max(sid) from t2 where 0=1 group by id)) r +on t.id=r.id ; +id sid id +1 NULL NULL +2 NULL NULL +drop table t1, t2; +# end of 5.5 tests +SET optimizer_switch=@save_optimizer_switch; +set join_cache_level=default; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 2 +set @@optimizer_switch=@save_optimizer_switch_jcl6; +set @optimizer_switch_for_join_outer_test=NULL; +set @join_cache_level_for_join_outer_test=NULL; |