join_outer.result

drop table if exists t0,t1,t2,t3,t4,t5;
SET @org_optimizer_switch=@@optimizer_switch;
SET optimizer_switch=ifnull(@optimizer_switch_for_join_outer_test,'outer_join_with_cache=off');
set join_cache_level=1;
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
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	ALL	NULL	NULL	NULL	NULL	3	Using where; Not exists
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	ALL	NULL	NULL	NULL	NULL	3	Using where
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	ALL	NULL	NULL	NULL	NULL	3	Using where; Not exists
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	ALL	NULL	NULL	NULL	NULL	3	Using where
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
1	2	1	3	NULL	NULL
2	2	2	3	NULL	NULL
3	2	NULL	NULL	3	4
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	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	2	Using where
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	
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	
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	
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	
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	
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	
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
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	0
Handler_read_prev	0
Handler_read_retry	0
Handler_read_rnd	0
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
1	SIMPLE	tt3	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	tt4	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	tt5	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	tt6	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	tt7	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	tt8	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	tt9	ALL	NULL	NULL	NULL	NULL	2	Using join buffer (flat, 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
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
1	SIMPLE	jt3	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index
1	SIMPLE	jt4	index	NULL	PRIMARY	4	NULL	2	100.00	Using index
1	SIMPLE	jt5	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index
1	SIMPLE	jt2	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index
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
1	SIMPLE	jt4	index	NULL	PRIMARY	4	NULL	2	100.00	Using index
1	SIMPLE	jt5	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index
1	SIMPLE	jt2	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index
1	SIMPLE	jt1	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index
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	range	PRIMARY	PRIMARY	4	NULL	1	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	Engine-independent statistics collected
test.t1	analyze	status	OK
test.t2	analyze	status	Engine-independent statistics collected
test.t2	analyze	status	OK
test.t3	analyze	status	Engine-independent statistics collected
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	13
Handler_read_last	0
Handler_read_next	5
Handler_read_prev	0
Handler_read_retry	0
Handler_read_rnd	0
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	7
Handler_read_last	0
Handler_read_next	5
Handler_read_prev	0
Handler_read_retry	0
Handler_read_rnd	0
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 @save_join_cache_level= @@join_cache_level;
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=@save_join_cache_level;
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
1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	2	100.00	Using where
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
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	ALL	b	NULL	NULL	NULL	1000	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	ALL	c	NULL	NULL	NULL	1000	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
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
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
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
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;
#
# MDEV-16726: SELECT with STRAGHT JOIN containing NESTED RIGHT JOIN
#             converted to INNER JOIN with first constant inner table
#
CREATE TABLE t1 (
pk int PRIMARY KEY, i1 int, v1 varchar(1), v2 varchar(1), KEY v1 (v1,i1)
) engine=MyISAM;
INSERT INTO t1 VALUES
(8,3,'c','c'),(9,4,'z','z'),(10,3,'i','i'),(11,186,'x','x'),
(14,226,'m','m'),(15,133,'p','p');
CREATE TABLE t2 (
pk int PRIMARY KEY, i1 int, v1 varchar(1), v2 varchar(1)
) engine=MyISAM;
INSERT INTO t2 VALUES (10,6,'p','p');
EXPLAIN EXTENDED
SELECT STRAIGHT_JOIN t2.v2
FROM
(t1 as tb1 LEFT JOIN t1 AS tb2 ON tb2.v1 = tb1.v2)
RIGHT JOIN
(t2,t1)
ON t1.pk = t2.pk AND t2.v2 = tb1.v1
WHERE tb1.pk = 40
ORDER BY tb1.i1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
Warnings:
Note	1003	select straight_join 'p' AS `v2` from `test`.`t1` join `test`.`t1` `tb1` left join `test`.`t1` `tb2` on(multiple equal(NULL, NULL)) where 0 order by NULL
EXPLAIN EXTENDED
SELECT STRAIGHT_JOIN t2.v2
FROM
(t2,t1)
LEFT JOIN
(t1 as tb1 LEFT JOIN t1 AS tb2 ON tb2.v1 = tb1.v2)
ON t1.pk = t2.pk AND t2.v2 = tb1.v1
WHERE tb1.pk = 40
ORDER BY tb1.i1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
Warnings:
Note	1003	select straight_join 'p' AS `v2` from `test`.`t1` join `test`.`t1` `tb1` left join `test`.`t1` `tb2` on(multiple equal(NULL, NULL)) where 0 order by NULL
SELECT STRAIGHT_JOIN DISTINCT t2.v2
FROM
(t1 as tb1 LEFT JOIN t1 AS tb2 ON tb2.v1 = tb1.v2)
RIGHT JOIN
(t2,t1)
ON t1.pk = t2.pk AND t2.v2 = tb1.v1
WHERE tb1.pk = 40
ORDER BY tb1.i1;
v2
DROP TABLE t1,t2;
#
# MDEV-19790 : IS NOT TRUE / IS NOT FALSE predicates over
#              inner tables of outer joins
#
create table t1 (a int);
create table t2 (b int);
insert into t1 values (3), (7), (1);
insert into t2 values (7), (4), (3);
select * from t1 left join t2 on a=b;
a	b
3	3
7	7
1	NULL
select * from t1 left join t2 on a=b where (b > 3) is not true;
a	b
3	3
1	NULL
explain extended select * from t1 left join t2 on a=b where (b > 3) is not true;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`b` = `test`.`t1`.`a`) where `test`.`t2`.`b` > 3 is not true
select * from t1 left join t2 on a=b where (b > 3) is not false;
a	b
7	7
1	NULL
explain extended select * from t1 left join t2 on a=b where (b > 3) is not false;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`b` = `test`.`t1`.`a`) where `test`.`t2`.`b` > 3 is not false
drop table t1,t2;
# end of 5.5 tests
#
# MDEV-19258: chained right joins all converted to inner joins
#
CREATE TABLE t1 (
id int NOT NULL AUTO_INCREMENT,
timestamp bigint NOT NULL,
modifiedBy varchar(255) DEFAULT NULL,
PRIMARY KEY (id)
);
CREATE TABLE t2 (
id int NOT NULL,
REV int NOT NULL,
REVTYPE tinyint DEFAULT NULL,
profile_id int DEFAULT NULL,
PRIMARY KEY (id,REV)
);
CREATE TABLE t3 (
id int NOT NULL,
REV int NOT NULL,
person_id int DEFAULT NULL,
PRIMARY KEY (id,REV)
);
CREATE TABLE t4 (
id int NOT NULL,
REV int NOT NULL,
PRIMARY KEY (id,REV)
);
INSERT INTO t1 VALUES
(1,1294391193890,'Cxqy$*9.kKeE'),(2,1294643906883,'rE4wqGV0gif@'),
(3,1294643927456,'L?3yt(%dY$Br'),(4,1294644343525,'WH&ObiZ$#2S4'),
(5,1294644616416,'YXnCbt?olUZ0'),(6,1294644954537,'8Npe4!(#lU@k'),
(7,1294645046659,'knc0GhXB1#ib'),(8,1294645183829,'w*oPpVfuS8^m'),
(9,1294645386701,'hwXR@3qVzrbU'),(10,1294645525982,'BeLW*Y9ndP0l'),
(11,1294645627723,'nTegib^)qZ$I'),(12,1294650860266,'u62C^Kzx3wH8'),
(13,1294657613745,'4&BkFjGa!qLg'),(14,1294660627161,')anpt312SCoh'),
(15,1294661023336,'LtJ2PX?*kTmx'),(16,1294662838066,'POGRr@?#ofpl'),
(17,1294663020989,'o.)1EOT2jnF7'),(18,1294663308065,'&TZ0F0LHE6.h'),
(19,1294664900039,'j)kSC%^In$9d'),(20,1294668904556,'97glN50)cAo.'),
(21,1294728056853,'lrKZxmw?I.Ek'),(22,1294728157174,'@P*SRg!pT.q?'),
(23,1294728327099,'W9gPrptF.)8n'),(24,1294728418481,'$q*c^sM&URd#'),
(25,1294728729620,'9*f4&bTPRtHo'),(26,1294728906014,')4VtTEnS7$oI'),
(27,1294732190003,'8dkNSPq2u3AQ'),(28,1294733205065,'SV2N6IoEf438'),
(29,1294741984927,'rBKj.0S^Ey%*'),(30,1294751748352,'j$2DvlBqk)Fw'),
(31,1294753902212,'C$N6OrEw8elz'),(32,1294758120598,'DCSVZw!rnxXq'),
(33,1294761769556,'OTS@QU8a6s5c'),(34,1294816845305,'IUE2stG0D3L5'),
(35,1294816966909,'Xd16yka.9nHe'),(36,1294817116302,'lOQHZpm%!8qb'),
(37,1294817374775,'^&pE3IhNf7ey'),(38,1294817538907,'oEn4#7C0Vhfp'),
(39,1294818482950,'bx54J*O0Va&?'),(40,1294819047024,'J%@a&1.qgdb?'),
(41,1294821826077,'C9kojr$L3Phz'),(42,1294825454458,'gG#BOnM80ZPi'),
(43,1294904129918,'F^!TrjM#zdvc'),(44,1294904254166,'Va&Tb)k0RvlM'),
(45,1294904414964,'dJjq0M6HvhR#'),(46,1294904505784,'nJmxg)ELqY(b'),
(47,1294904602835,'dhF#or$Vge!7'),(48,1294904684728,'?bIh5E3l!0em'),
(49,1294904877898,'Y*WflOdcxnk.'),(50,1294905002390,'*?H!lUgez5A.'),
(51,1294905096043,'wlEIY3n9uz!p'),(52,1294905404621,'T?qv3H6&hlQD'),
(53,1294905603922,'S@Bhys^Ti7bt'),(54,1294905788416,'KR?a5NVukz#l'),
(55,1294905993190,'A*&q4kWhED!o'),(56,1294906205254,'fT0%7z0DF6h*'),
(57,1294906319680,'LhzdW4?ivjR0'),(58,1294906424296,'h0KDlns%U*6T'),
(59,1294906623844,'b$CfB1noI6Ax'),(60,1294911258896,'#T1*LP!3$Oys');
INSERT INTO t2 VALUES
(1,1,0,10209),(1,42480,1,10209),(1,61612,1,10209),(1,257545,1,10209),
(1,385332,1,10209),(1,1687999,1,10209),(3,1,0,10210),(3,617411,2,10210),
(4,11,0,14),(4,95149,1,10211),(4,607890,2,10211),(5,1,0,10212),
(6,1,0,10213),(6,93344,1,10213),(6,295578,1,10213),(6,295579,1,10213),
(6,295644,1,10213),(7,1,0,10214),(7,12,1,7),(7,688796,1,10214),
(7,1140433,1,10214),(7,1715227,1,10214),(8,1,0,10215),(8,74253,1,10215),
(8,93345,1,10215),(8,12,2,2),(9,1,0,10216),(9,93342,1,10216),
(9,122354,1,10216),(9,301499,2,10216),(10,11,0,5),(10,93343,1,10217),
(10,122355,1,10217),(10,123050,1,10217),(10,301500,2,10217),(11,1,0,10218),
(11,87852,1,10218),(11,605499,2,10218),(12,1,0,10219),(12,88024,1,10219),
(12,605892,2,10219),(13,1,0,10220);
INSERT INTO t3 VALUES
(1,1,300003),(1,117548,NULL),(2,1,300003),(2,117548,300006),
(3,1,300153),(3,117548,NULL),(4,1,300153),(4,117548,NULL),
(5,1,300153),(5,117548,NULL),(6,1,300182),(6,117548,NULL),
(7,1,300205),(7,117548,NULL),(8,1,300217),(8,117548,NULL),
(9,1,300290),(9,117548,NULL),(10,1,300290),(10,117548,NULL),
(11,1,300405),(11,117548,NULL),(12,1,300670),(12,117548,NULL),
(13,1,300670),(13,117548,NULL),(14,1,300006),(14,117548,NULL),
(15,1,300671),(15,117548,NULL),(16,1,300732),(16,117548,NULL);
INSERT INTO t4 VALUES
(300000,1),(300001,1),(300003,1),(300004,1),
(300005,1),(300005,688796),(300006,1),(300006,97697),
(300009,1),(300010,1),(300011,1),(300012,1),(300013,1),
(300014,1),(300015,1),(300016,1),(300017,1),(300018,1),
(300019,1),(300020,1),(300021,1),(300022,1),(300023,1),
(300024,1),(300025,1),(300026,1),(300027,1),(300028,1);
# This should have join order of t2,t3,t4,t1
EXPLAIN EXTENDED SELECT *
FROM t1 INNER JOIN t2 ON t2.REV=t1.id
INNER JOIN t3 ON t3.id=t2.profile_id
INNER JOIN t4 ON t4.id=t3.person_id
WHERE t1.timestamp < 1294664900039 AND t1.timestamp > 1294644616416  AND
t2.REVTYPE=2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	42	100.00	Using where
1	SIMPLE	t3	ref	PRIMARY	PRIMARY	4	test.t2.profile_id	1	100.00	Using where
1	SIMPLE	t4	ref	PRIMARY	PRIMARY	4	test.t3.person_id	1	100.00	Using index
1	SIMPLE	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.REV	1	100.00	Using where
Warnings:
Note	1003	select `test`.`t1`.`id` AS `id`,`test`.`t1`.`timestamp` AS `timestamp`,`test`.`t1`.`modifiedBy` AS `modifiedBy`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`REV` AS `REV`,`test`.`t2`.`REVTYPE` AS `REVTYPE`,`test`.`t2`.`profile_id` AS `profile_id`,`test`.`t3`.`id` AS `id`,`test`.`t3`.`REV` AS `REV`,`test`.`t3`.`person_id` AS `person_id`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`REV` AS `REV` from `test`.`t1` join `test`.`t2` join `test`.`t3` join `test`.`t4` where `test`.`t2`.`REVTYPE` = 2 and `test`.`t4`.`id` = `test`.`t3`.`person_id` and `test`.`t3`.`id` = `test`.`t2`.`profile_id` and `test`.`t1`.`id` = `test`.`t2`.`REV` and `test`.`t1`.`timestamp` < 1294664900039 and `test`.`t1`.`timestamp` > 1294644616416
SELECT *
FROM t1 INNER JOIN t2 ON t2.REV=t1.id
INNER JOIN t3 ON t3.id=t2.profile_id
INNER JOIN t4 ON t4.id=t3.person_id
WHERE t1.timestamp < 1294664900039 AND t1.timestamp > 1294644616416  AND
t2.REVTYPE=2;
id	timestamp	modifiedBy	id	REV	REVTYPE	profile_id	id	REV	person_id	id	REV
12	1294650860266	u62C^Kzx3wH8	8	12	2	2	2	1	300003	300003	1
12	1294650860266	u62C^Kzx3wH8	8	12	2	2	2	117548	300006	300006	1
12	1294650860266	u62C^Kzx3wH8	8	12	2	2	2	117548	300006	300006	97697
# This should have join order of t2,t3,t4,t1 with the same plan as above
# because all RIGHT JOIN operations are converted into INNER JOIN
EXPLAIN EXTENDED SELECT *
FROM t1 RIGHT JOIN t2 ON t2.REV=t1.id
RIGHT JOIN t3 ON t3.id=t2.profile_id
RIGHT JOIN t4 ON t4.id=t3.person_id
WHERE t1.timestamp < 1294664900039 AND t1.timestamp > 1294644616416
AND t2.REVTYPE=2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	42	100.00	Using where
1	SIMPLE	t3	ref	PRIMARY	PRIMARY	4	test.t2.profile_id	1	100.00	Using where
1	SIMPLE	t4	ref	PRIMARY	PRIMARY	4	test.t3.person_id	1	100.00	Using index
1	SIMPLE	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.REV	1	100.00	Using where
Warnings:
Note	1003	select `test`.`t1`.`id` AS `id`,`test`.`t1`.`timestamp` AS `timestamp`,`test`.`t1`.`modifiedBy` AS `modifiedBy`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`REV` AS `REV`,`test`.`t2`.`REVTYPE` AS `REVTYPE`,`test`.`t2`.`profile_id` AS `profile_id`,`test`.`t3`.`id` AS `id`,`test`.`t3`.`REV` AS `REV`,`test`.`t3`.`person_id` AS `person_id`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`REV` AS `REV` from `test`.`t4` join `test`.`t3` join `test`.`t2` join `test`.`t1` where `test`.`t2`.`REVTYPE` = 2 and `test`.`t1`.`id` = `test`.`t2`.`REV` and `test`.`t3`.`id` = `test`.`t2`.`profile_id` and `test`.`t4`.`id` = `test`.`t3`.`person_id` and `test`.`t1`.`timestamp` < 1294664900039 and `test`.`t1`.`timestamp` > 1294644616416
SELECT *
FROM t1 RIGHT JOIN t2 ON t2.REV=t1.id
RIGHT JOIN t3 ON t3.id=t2.profile_id
RIGHT JOIN t4 ON t4.id=t3.person_id
WHERE t1.timestamp < 1294664900039 AND t1.timestamp > 1294644616416
AND t2.REVTYPE=2;
id	timestamp	modifiedBy	id	REV	REVTYPE	profile_id	id	REV	person_id	id	REV
12	1294650860266	u62C^Kzx3wH8	8	12	2	2	2	1	300003	300003	1
12	1294650860266	u62C^Kzx3wH8	8	12	2	2	2	117548	300006	300006	1
12	1294650860266	u62C^Kzx3wH8	8	12	2	2	2	117548	300006	300006	97697
DROP TABLE t1,t2,t3,t4;
# end of 10.1 tests
#
# MDEV-25362: name resolution for subqueries in ON expressions
#
create table t1 (a int, b int);
create table t2 (c int, d int);
create table t3 (e int, f int);
create table t4 (g int, h int);
explain
select *
from
t1 left join
(t2
join
t3 on
(t3.f=t1.a)
) on (t2.c=t1.a );
ERROR 42S22: Unknown column 't1.a' in 'on clause'
explain
select *
from
t1 left join
(t2
join
t3 on
(t3.f=(select max(g) from t4 where t4.h=t1.a))
) on (t2.c=t1.a );
ERROR 42S22: Unknown column 't1.a' in 'where clause'
drop table t1,t2,t3,t4;
create table t1 (a int);
insert into t1 values (1),(2);
create table t2 (b int);
insert into t2 values (1),(2);
create table t3 (c int);
insert into t3 values (1),(2);
select * from ( select * from t1 left join t2
on b in (select x from t3 as sq1)
) as sq2;
ERROR 42S22: Unknown column 'x' in 'field list'
drop table t1,t2,t3;
# end of 10.2 tests
#
# MDEV-22866: Crash in join optimizer with constant outer join nest
#
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3),(4);
CREATE TABLE t3 (c INT, KEY(c)) ENGINE=MyISAM;
CREATE TABLE t4 (d INT, KEY(d)) ENGINE=MyISAM;
INSERT INTO t4 VALUES (5),(6);
CREATE TABLE t5 (e INT) ENGINE=MyISAM;
INSERT INTO t5 VALUES (7),(8);
CREATE TABLE t6 (f INT) ENGINE=MyISAM;
INSERT INTO t6 VALUES (9),(10);
SELECT *
FROM
t1
LEFT JOIN (
t2 LEFT JOIN (
t3 JOIN
t4 ON t3.c = t4.d and t3.c >2 and t3.c<0
) ON t2.b >= t4.d
) ON t1.a <= t2.b
LEFT JOIN t5 ON t2.b = t5.e
LEFT JOIN t6 ON t3.c = t6.f;
a	b	c	d	e	f
1	3	NULL	NULL	NULL	NULL
1	4	NULL	NULL	NULL	NULL
2	3	NULL	NULL	NULL	NULL
2	4	NULL	NULL	NULL	NULL
drop table t1,t2,t3,t4,t5,t6;
#
# MDEV-17518: Range optimization doesn't use ON expressions from nested outer joins
#
create table t1(a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2(a int);
insert into t2 values (0),(1);
create table t3 (a int, b int, key(a));
insert into t3 select A.a + B.a* 10 + C.a * 100, 12345 from t1 A, t1 B, t1 C;
# Uses range for table t3:
explain select * from t1 left join t3 on t1.a=t3.b and t3.a<5;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	10	
1	SIMPLE	t3	range	a	a	5	NULL	5	Using where
# This must use range for table t3, too:
explain select * from t1 left join (t3 join t2) on t1.a=t3.b and t3.a<5;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	10	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	
1	SIMPLE	t3	range	a	a	5	NULL	5	Using where
#
# .. part 2: make sure condition selectivity can use the condition too.
#
alter table t3 drop key a;
set @tmp1=@@optimizer_use_condition_selectivity;
set @tmp2=@@use_stat_tables;
set @tmp3=@@histogram_size;
set use_stat_tables=preferably;
set optimizer_use_condition_selectivity=4;
set histogram_size=100;
analyze table t3 persistent for all;
Table	Op	Msg_type	Msg_text
test.t3	analyze	status	Engine-independent statistics collected
test.t3	analyze	status	OK
# t3.filtered is less than 100%:
explain extended select * from t1 left join t3 on t1.a=t3.b and t3.a<5;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	10	100.00	
1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	1000	0.50	Using where
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` left join `test`.`t3` on(`test`.`t3`.`b` = `test`.`t1`.`a` and `test`.`t3`.`a` < 5) where 1
# t3.filtered must less than 100%, too:
explain extended select * from t1 left join (t3 join t2) on t1.a=t3.b and t3.a<5;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	10	100.00	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	1000	0.50	Using where
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t2`.`a` AS `a` from `test`.`t1` left join (`test`.`t3` join `test`.`t2`) on(`test`.`t3`.`b` = `test`.`t1`.`a` and `test`.`t3`.`a` < 5) where 1
drop table t1,t2,t3;
set optimizer_use_condition_selectivity= @tmp1;
set use_stat_tables= @tmp2;
set histogram_size= @tmp3;
# Another test
CREATE TABLE t1 (i1 int) ;
CREATE TABLE t2 (pk int NOT NULL PRIMARY KEY) ;
CREATE TABLE t3 (pk int NOT NULL, i1 int, PRIMARY KEY (pk)) ;
INSERT INTO t3 VALUES (2, NULL);
CREATE TABLE t4 (pk int NOT NULL, i1 int, PRIMARY KEY (pk), KEY i1 (i1)) ;
CREATE VIEW v4 AS SELECT * FROM t4;
SELECT 1
FROM t3 RIGHT JOIN t1 ON t3.i1 = t1.i1
LEFT JOIN v4
RIGHT JOIN t2 ON v4.i1 = t2.pk ON t1.i1 = t2.pk
WHERE t3.pk IN (2);
1
drop view v4;
drop table t1,t2,t3,t4;
# end of 10.3 tests
SET optimizer_switch=@org_optimizer_switch;