set @@optimizer_switch='optimize_join_buffer_size=on';
set @@optimizer_switch='semijoin_with_cache=on';
set @@optimizer_switch='outer_join_with_cache=on';
set @@optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
set @@join_cache_level=6;
set @optimizer_switch_for_join_outer_test=@@optimizer_switch;
set @join_cache_level_for_join_outer_test=@@join_cache_level;
drop table if exists t0,t1,t2,t3,t4,t5;
drop view if exists v0,v1,v2,v3;
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=@join_cache_level_for_join_outer_test;
CREATE TABLE t1 (
grp int(11) default NULL,
a bigint(20) unsigned default NULL,
c char(10) NOT NULL default ''
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,1,'a'),(2,2,'b'),(2,3,'c'),(3,4,'E'),(3,5,'C'),(3,6,'D'),(NULL,NULL,'');
create table t2 (id int, a bigint unsigned not null, c char(10), d int, primary key (a));
insert into t2 values (1,1,"a",1),(3,4,"A",4),(3,5,"B",5),(3,6,"C",6),(4,7,"D",7);
select t1.*,t2.* from t1 JOIN t2 where t1.a=t2.a;
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) order by t1.grp,t1.a,t2.c;
grp	a	c	id	a	c	d
NULL	NULL		NULL	NULL	NULL	NULL
1	1	a	1	1	a	1
2	2	b	NULL	NULL	NULL	NULL
2	3	c	NULL	NULL	NULL	NULL
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
select t1.*,t2.* from { oj t2 left outer join t1 on (t1.a=t2.a) };
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
NULL	NULL	NULL	4	7	D	7
select t1.*,t2.* from t1 as t0,{ oj t2 left outer join t1 on (t1.a=t2.a) } WHERE t0.a=2;
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
NULL	NULL	NULL	4	7	D	7
select t1.*,t2.* from t1 left join t2 using (a);
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
2	2	b	NULL	NULL	NULL	NULL
2	3	c	NULL	NULL	NULL	NULL
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
NULL	NULL		NULL	NULL	NULL	NULL
select t1.*,t2.* from t1 left join t2 using (a) where t1.a=t2.a;
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
select t1.*,t2.* from t1 left join t2 using (a,c);
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
2	2	b	NULL	NULL	NULL	NULL
2	3	c	NULL	NULL	NULL	NULL
3	4	E	NULL	NULL	NULL	NULL
3	5	C	NULL	NULL	NULL	NULL
3	6	D	NULL	NULL	NULL	NULL
NULL	NULL		NULL	NULL	NULL	NULL
select t1.*,t2.* from t1 left join t2 using (c);
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
1	1	a	3	4	A	4
2	2	b	3	5	B	5
2	3	c	3	6	C	6
3	4	E	NULL	NULL	NULL	NULL
3	5	C	3	6	C	6
3	6	D	4	7	D	7
NULL	NULL		NULL	NULL	NULL	NULL
select t1.*,t2.* from t1 natural left outer join t2;
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
2	2	b	NULL	NULL	NULL	NULL
2	3	c	NULL	NULL	NULL	NULL
3	4	E	NULL	NULL	NULL	NULL
3	5	C	NULL	NULL	NULL	NULL
3	6	D	NULL	NULL	NULL	NULL
NULL	NULL		NULL	NULL	NULL	NULL
select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) where t2.id=3;
grp	a	c	id	a	c	d
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) where t2.id is null;
grp	a	c	id	a	c	d
2	2	b	NULL	NULL	NULL	NULL
2	3	c	NULL	NULL	NULL	NULL
NULL	NULL		NULL	NULL	NULL	NULL
explain select t1.*,t2.* from t1,t2 where t1.a=t2.a and isnull(t2.a)=1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	7	
1	SIMPLE	t2	eq_ref	PRIMARY	PRIMARY	8	test.t1.a	1	Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a);
grp	a	c	id	a	c	d	a
1	1	a	1	1	a	1	1
2	2	b	NULL	NULL	NULL	NULL	NULL
2	3	c	NULL	NULL	NULL	NULL	NULL
3	4	E	3	4	A	4	4
3	5	C	3	5	B	5	5
3	6	D	3	6	C	6	6
NULL	NULL		NULL	NULL	NULL	NULL	NULL
explain select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t1.a=t3.a);
ERROR 42S22: Unknown column 't3.a' in 'ON'
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'
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'
select t1.*,t2.* from t1 inner join t2 using (a);
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
select t1.*,t2.* from t1 inner join t2 on (t1.a=t2.a);
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
3	4	E	3	4	A	4
3	5	C	3	5	B	5
3	6	D	3	6	C	6
select t1.*,t2.* from t1 natural join t2;
grp	a	c	id	a	c	d
1	1	a	1	1	a	1
drop table t1,t2;
CREATE TABLE t1 (
usr_id INT unsigned NOT NULL,
uniq_id INT unsigned NOT NULL AUTO_INCREMENT,
start_num INT unsigned NOT NULL DEFAULT 1,
increment INT unsigned NOT NULL DEFAULT 1,
PRIMARY KEY (uniq_id),
INDEX usr_uniq_idx (usr_id, uniq_id),
INDEX uniq_usr_idx (uniq_id, usr_id)
);
CREATE TABLE t2 (
id INT unsigned NOT NULL DEFAULT 0,
usr2_id INT unsigned NOT NULL DEFAULT 0,
max INT unsigned NOT NULL DEFAULT 0,
c_amount INT unsigned NOT NULL DEFAULT 0,
d_max INT unsigned NOT NULL DEFAULT 0,
d_num INT unsigned NOT NULL DEFAULT 0,
orig_time INT unsigned NOT NULL DEFAULT 0,
c_time INT unsigned NOT NULL DEFAULT 0,
active ENUM ("no","yes") NOT NULL,
PRIMARY KEY (id,usr2_id),
INDEX id_idx (id),
INDEX usr2_idx (usr2_id)
);
INSERT INTO t1 VALUES (3,NULL,0,50),(3,NULL,0,200),(3,NULL,0,25),(3,NULL,0,84676),(3,NULL,0,235),(3,NULL,0,10),(3,NULL,0,3098),(3,NULL,0,2947),(3,NULL,0,8987),(3,NULL,0,8347654),(3,NULL,0,20398),(3,NULL,0,8976),(3,NULL,0,500),(3,NULL,0,198);
SELECT t1.usr_id,t1.uniq_id,t1.increment,
t2.usr2_id,t2.c_amount,t2.max
FROM t1
LEFT JOIN t2 ON t2.id = t1.uniq_id
WHERE t1.uniq_id = 4
ORDER BY t2.c_amount;
usr_id	uniq_id	increment	usr2_id	c_amount	max
3	4	84676	NULL	NULL	NULL
SELECT t1.usr_id,t1.uniq_id,t1.increment,
t2.usr2_id,t2.c_amount,t2.max
FROM t2
RIGHT JOIN t1 ON t2.id = t1.uniq_id
WHERE t1.uniq_id = 4
ORDER BY t2.c_amount;
usr_id	uniq_id	increment	usr2_id	c_amount	max
3	4	84676	NULL	NULL	NULL
INSERT INTO t2 VALUES (2,3,3000,6000,0,0,746584,837484,'yes');
INSERT INTO t2 VALUES (2,3,3000,6000,0,0,746584,837484,'yes');
ERROR 23000: Duplicate entry '2-3' for key 'PRIMARY'
INSERT INTO t2 VALUES (7,3,1000,2000,0,0,746294,937484,'yes');
SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4 ORDER BY t2.c_amount;
usr_id	uniq_id	increment	usr2_id	c_amount	max
3	4	84676	NULL	NULL	NULL
SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4 GROUP BY t2.c_amount;
usr_id	uniq_id	increment	usr2_id	c_amount	max
3	4	84676	NULL	NULL	NULL
SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4;
usr_id	uniq_id	increment	usr2_id	c_amount	max
3	4	84676	NULL	NULL	NULL
drop table t1,t2;
CREATE TABLE t1 (
cod_asig int(11) DEFAULT '0' NOT NULL,
desc_larga_cat varchar(80) DEFAULT '' NOT NULL,
desc_larga_cas varchar(80) DEFAULT '' NOT NULL,
desc_corta_cat varchar(40) DEFAULT '' NOT NULL,
desc_corta_cas varchar(40) DEFAULT '' NOT NULL,
cred_total double(3,1) DEFAULT '0.0' NOT NULL,
pre_requisit int(11),
co_requisit int(11),
preco_requisit int(11),
PRIMARY KEY (cod_asig)
);
INSERT INTO t1 VALUES (10360,'asdfggfg','Introduccion a los  Ordenadores I','asdfggfg','Introduccio Ordinadors I',6.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (10361,'Components i Circuits Electronics I','Componentes y Circuitos Electronicos I','Components i Circuits Electronics I','Comp. i Circ. Electr. I',6.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (10362,'Laboratori d`Ordinadors','Laboratorio de Ordenadores','Laboratori d`Ordinadors','Laboratori Ordinadors',4.5,NULL,NULL,NULL);
INSERT INTO t1 VALUES (10363,'Tecniques de Comunicacio Oral i Escrita','Tecnicas de Comunicacion Oral y Escrita','Tecniques de Comunicacio Oral i Escrita','Tec. Com. Oral i Escrita',4.5,NULL,NULL,NULL);
INSERT INTO t1 VALUES (11403,'Projecte Fi de Carrera','Proyecto Fin de Carrera','Projecte Fi de Carrera','PFC',9.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (11404,'+lgebra lineal','Algebra lineal','+lgebra lineal','+lgebra lineal',15.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (11405,'+lgebra lineal','Algebra lineal','+lgebra lineal','+lgebra lineal',18.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (11406,'Calcul Infinitesimal','Cßlculo Infinitesimal','Calcul Infinitesimal','Calcul Infinitesimal',15.0,NULL,NULL,NULL);
CREATE TABLE t2 (
idAssignatura int(11) DEFAULT '0' NOT NULL,
Grup int(11) DEFAULT '0' NOT NULL,
Places smallint(6) DEFAULT '0' NOT NULL,
PlacesOcupades int(11) DEFAULT '0',
PRIMARY KEY (idAssignatura,Grup)
);
INSERT INTO t2 VALUES (10360,12,333,0);
INSERT INTO t2 VALUES (10361,30,2,0);
INSERT INTO t2 VALUES (10361,40,3,0);
INSERT INTO t2 VALUES (10360,45,10,0);
INSERT INTO t2 VALUES (10362,10,12,0);
INSERT INTO t2 VALUES (10360,55,2,0);
INSERT INTO t2 VALUES (10360,70,0,0);
INSERT INTO t2 VALUES (10360,565656,0,0);
INSERT INTO t2 VALUES (10360,32767,7,0);
INSERT INTO t2 VALUES (10360,33,8,0);
INSERT INTO t2 VALUES (10360,7887,85,0);
INSERT INTO t2 VALUES (11405,88,8,0);
INSERT INTO t2 VALUES (10360,0,55,0);
INSERT INTO t2 VALUES (10360,99,0,0);
INSERT INTO t2 VALUES (11411,30,10,0);
INSERT INTO t2 VALUES (11404,0,0,0);
INSERT INTO t2 VALUES (10362,11,111,0);
INSERT INTO t2 VALUES (10363,33,333,0);
INSERT INTO t2 VALUES (11412,55,0,0);
INSERT INTO t2 VALUES (50003,66,6,0);
INSERT INTO t2 VALUES (11403,5,0,0);
INSERT INTO t2 VALUES (11406,11,11,0);
INSERT INTO t2 VALUES (11410,11410,131,0);
INSERT INTO t2 VALUES (11416,11416,32767,0);
INSERT INTO t2 VALUES (11409,0,0,0);
CREATE TABLE t3 (
id int(11) NOT NULL auto_increment,
dni_pasaporte char(16) DEFAULT '' NOT NULL,
idPla int(11) DEFAULT '0' NOT NULL,
cod_asig int(11) DEFAULT '0' NOT NULL,
any smallint(6) DEFAULT '0' NOT NULL,
quatrimestre smallint(6) DEFAULT '0' NOT NULL,
estat char(1) DEFAULT 'M' NOT NULL,
PRIMARY KEY (id),
UNIQUE dni_pasaporte (dni_pasaporte,idPla),
UNIQUE dni_pasaporte_2 (dni_pasaporte,idPla,cod_asig,any,quatrimestre)
);
INSERT INTO t3 VALUES (1,'11111111',1,10362,98,1,'M');
CREATE TABLE t4 (
id int(11) NOT NULL auto_increment,
papa int(11) DEFAULT '0' NOT NULL,
fill int(11) DEFAULT '0' NOT NULL,
idPla int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (id),
KEY papa (idPla,papa),
UNIQUE papa_2 (idPla,papa,fill)
);
INSERT INTO t4 VALUES (1,-1,10360,1);
INSERT INTO t4 VALUES (2,-1,10361,1);
INSERT INTO t4 VALUES (3,-1,10362,1);
SELECT DISTINCT fill,desc_larga_cat,cred_total,Grup,Places,PlacesOcupades FROM t4 LEFT JOIN t3 ON t3.cod_asig=fill AND estat='S'   AND dni_pasaporte='11111111'   AND t3.idPla=1 , t2,t1 WHERE fill=t1.cod_asig   AND Places>PlacesOcupades   AND fill=idAssignatura   AND t4.idPla=1   AND papa=-1;
fill	desc_larga_cat	cred_total	Grup	Places	PlacesOcupades
10360	asdfggfg	6.0	0	55	0
10360	asdfggfg	6.0	12	333	0
10360	asdfggfg	6.0	32767	7	0
10360	asdfggfg	6.0	33	8	0
10360	asdfggfg	6.0	45	10	0
10360	asdfggfg	6.0	55	2	0
10360	asdfggfg	6.0	7887	85	0
10361	Components i Circuits Electronics I	6.0	30	2	0
10361	Components i Circuits Electronics I	6.0	40	3	0
10362	Laboratori d`Ordinadors	4.5	10	12	0
10362	Laboratori d`Ordinadors	4.5	11	111	0
SELECT DISTINCT fill,t3.idPla FROM t4 LEFT JOIN t3 ON t3.cod_asig=t4.fill AND t3.estat='S' AND t3.dni_pasaporte='1234' AND t3.idPla=1 ;
fill	idPla
10360	NULL
10361	NULL
10362	NULL
INSERT INTO t3 VALUES (3,'1234',1,10360,98,1,'S');
SELECT DISTINCT fill,t3.idPla FROM t4 LEFT JOIN t3 ON t3.cod_asig=t4.fill AND t3.estat='S' AND t3.dni_pasaporte='1234' AND t3.idPla=1 ;
fill	idPla
10360	1
10361	NULL
10362	NULL
drop table t1,t2,t3,test.t4;
CREATE TABLE t1 (
id smallint(5) unsigned NOT NULL auto_increment,
name char(60) DEFAULT '' NOT NULL,
PRIMARY KEY (id)
);
INSERT INTO t1 VALUES (1,'Antonio Paz');
INSERT INTO t1 VALUES (2,'Lilliana Angelovska');
INSERT INTO t1 VALUES (3,'Thimble Smith');
CREATE TABLE t2 (
id smallint(5) unsigned NOT NULL auto_increment,
owner smallint(5) unsigned DEFAULT '0' NOT NULL,
name char(60),
PRIMARY KEY (id)
);
INSERT INTO t2 VALUES (1,1,'El Gato');
INSERT INTO t2 VALUES (2,1,'Perrito');
INSERT INTO t2 VALUES (3,3,'Happy');
select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner);
name	name	id
Antonio Paz	El Gato	1
Antonio Paz	Perrito	2
Lilliana Angelovska	NULL	NULL
Thimble Smith	Happy	3
select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null;
name	name	id
Lilliana Angelovska	NULL	NULL
explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	
1	SIMPLE	t2	hash_ALL	NULL	#hash#$hj	2	test.t1.id	3	Using where; Not exists; Using join buffer (flat, BNLH join)
explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.name is null;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	
1	SIMPLE	t2	hash_ALL	NULL	#hash#$hj	2	test.t1.id	3	Using where; Using join buffer (flat, BNLH join)
select count(*) from t1 left join t2 on (t1.id = t2.owner);
count(*)
4
select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner);
name	name	id
Antonio Paz	El Gato	1
Antonio Paz	Perrito	2
Lilliana Angelovska	NULL	NULL
Thimble Smith	Happy	3
select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null;
name	name	id
Lilliana Angelovska	NULL	NULL
explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	
1	SIMPLE	t2	hash_ALL	NULL	#hash#$hj	2	test.t1.id	3	Using where; Not exists; Using join buffer (flat, BNLH join)
explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.name is null;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	
1	SIMPLE	t2	hash_ALL	NULL	#hash#$hj	2	test.t1.id	3	Using where; Using join buffer (flat, BNLH join)
select count(*) from t2 right join t1 on (t1.id = t2.owner);
count(*)
4
select t1.name, t2.name, t2.id,t3.id from t2 right join t1 on (t1.id = t2.owner) left join t1 as t3 on t3.id=t2.owner;
name	name	id	id
Antonio Paz	El Gato	1	1
Antonio Paz	Perrito	2	1
Lilliana Angelovska	NULL	NULL	NULL
Thimble Smith	Happy	3	3
select t1.name, t2.name, t2.id,t3.id from t1 right join t2 on (t1.id = t2.owner) right join t1 as t3 on t3.id=t2.owner;
name	name	id	id
Antonio Paz	El Gato	1	1
Antonio Paz	Perrito	2	1
NULL	NULL	NULL	2
Thimble Smith	Happy	3	3
select t1.name, t2.name, t2.id, t2.owner, t3.id from t1 left join t2 on (t1.id = t2.owner) right join t1 as t3 on t3.id=t2.owner;
name	name	id	owner	id
Antonio Paz	El Gato	1	1	1
Antonio Paz	Perrito	2	1	1
NULL	NULL	NULL	NULL	2
Thimble Smith	Happy	3	3	3
drop table t1,t2;
create table t1 (id int not null, str char(10), index(str));
insert into t1 values (1, null), (2, null), (3, "foo"), (4, "bar");
select * from t1 where str is not null order by id;
id	str
3	foo
4	bar
select * from t1 where str is null;
id	str
1	NULL
2	NULL
drop table t1;
CREATE TABLE t1 (
t1_id bigint(21) NOT NULL auto_increment,
PRIMARY KEY (t1_id)
);
CREATE TABLE t2 (
t2_id bigint(21) NOT NULL auto_increment,
PRIMARY KEY (t2_id)
);
CREATE TABLE t3 (
t3_id bigint(21) NOT NULL auto_increment,
PRIMARY KEY (t3_id)
);
CREATE TABLE t4 (
seq_0_id bigint(21) DEFAULT '0' NOT NULL,
seq_1_id bigint(21) DEFAULT '0' NOT NULL,
KEY seq_0_id (seq_0_id),
KEY seq_1_id (seq_1_id)
);
CREATE TABLE t5 (
seq_0_id bigint(21) DEFAULT '0' NOT NULL,
seq_1_id bigint(21) DEFAULT '0' NOT NULL,
KEY seq_1_id (seq_1_id),
KEY seq_0_id (seq_0_id)
);
insert into t1 values (1);
insert into t2 values (1);
insert into t3 values (1);
insert into t4 values (1,1);
insert into t5 values (1,1);
explain select * from t3 left join t4 on t4.seq_1_id = t2.t2_id left join t1 on t1.t1_id = t4.seq_0_id left join t5 on t5.seq_0_id = t1.t1_id left join t2 on t2.t2_id = t5.seq_1_id where t3.t3_id = 23;
ERROR 42S22: Unknown column 't2.t2_id' in 'ON'
drop table t1,t2,t3,t4,t5;
create table t1 (n int, m int, o int, key(n));
create table t2 (n int not null, m int, o int, primary key(n));
insert into t1 values (1, 2, 11), (1, 2, 7), (2, 2, 8), (1,2,9),(1,3,9);
insert into t2 values (1, 2, 3),(2, 2, 8), (4,3,9),(3,2,10);
select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and
t1.m = t2.m where t1.n = 1;
n	m	o	n	m	o
1	2	11	1	2	3
1	2	7	1	2	3
1	2	9	1	2	3
1	3	9	NULL	NULL	NULL
select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and
t1.m = t2.m where t1.n = 1 order by t1.o;
n	m	o	n	m	o
1	2	11	1	2	3
1	2	7	1	2	3
1	2	9	1	2	3
1	3	9	NULL	NULL	NULL
drop table t1,t2;
CREATE TABLE t1 (id1 INT NOT NULL PRIMARY KEY, dat1 CHAR(1), id2 INT);
INSERT INTO t1 VALUES (1,'a',1);
INSERT INTO t1 VALUES (2,'b',1);
INSERT INTO t1 VALUES (3,'c',2);
CREATE TABLE t2 (id2 INT NOT NULL PRIMARY KEY, dat2 CHAR(1));
INSERT INTO t2 VALUES (1,'x');
INSERT INTO t2 VALUES (2,'y');
INSERT INTO t2 VALUES (3,'z');
SELECT t2.id2 FROM t2 LEFT OUTER JOIN t1 ON t1.id2 = t2.id2 WHERE id1 IS NULL;
id2
3
SELECT t2.id2 FROM t2 NATURAL LEFT OUTER JOIN t1 WHERE id1 IS NULL;
id2
3
drop table t1,t2;
create table t1 ( color varchar(20), name varchar(20) );
insert into t1 values ( 'red', 'apple' );
insert into t1 values ( 'yellow', 'banana' );
insert into t1 values ( 'green', 'lime' );
insert into t1 values ( 'black', 'grape' );
insert into t1 values ( 'blue', 'blueberry' );
create table t2 ( count int, color varchar(20) );
insert into t2 values (10, 'green');
insert into t2 values (5, 'black');
insert into t2 values (15, 'white');
insert into t2 values (7, 'green');
select * from t1;
color	name
red	apple
yellow	banana
green	lime
black	grape
blue	blueberry
select * from t2;
count	color
10	green
5	black
15	white
7	green
select * from t2 natural join t1;
color	count	name
green	10	lime
green	7	lime
black	5	grape
select t2.count, t1.name from t2 natural join t1;
count	name
10	lime
7	lime
5	grape
select t2.count, t1.name from t2 inner join t1 using (color);
count	name
10	lime
7	lime
5	grape
drop table t1;
drop table t2;
CREATE TABLE t1 (
pcode varchar(8) DEFAULT '' NOT NULL
);
INSERT INTO t1 VALUES ('kvw2000'),('kvw2001'),('kvw3000'),('kvw3001'),('kvw3002'),('kvw3500'),('kvw3501'),('kvw3502'),('kvw3800'),('kvw3801'),('kvw3802'),('kvw3900'),('kvw3901'),('kvw3902'),('kvw4000'),('kvw4001'),('kvw4002'),('kvw4200'),('kvw4500'),('kvw5000'),('kvw5001'),('kvw5500'),('kvw5510'),('kvw5600'),('kvw5601'),('kvw6000'),('klw1000'),('klw1020'),('klw1500'),('klw2000'),('klw2001'),('klw2002'),('kld2000'),('klw2500'),('kmw1000'),('kmw1500'),('kmw2000'),('kmw2001'),('kmw2100'),('kmw3000'),('kmw3200');
CREATE TABLE t2 (
pcode varchar(8) DEFAULT '' NOT NULL,
KEY pcode (pcode)
);
INSERT INTO t2 VALUES ('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw6000'),('kvw6000'),('kld2000');
SELECT t1.pcode, IF(ISNULL(t2.pcode), 0, COUNT(*)) AS count FROM t1
LEFT JOIN t2 ON t1.pcode = t2.pcode GROUP BY t1.pcode;
pcode	count
kld2000	1
klw1000	0
klw1020	0
klw1500	0
klw2000	0
klw2001	0
klw2002	0
klw2500	0
kmw1000	0
kmw1500	0
kmw2000	0
kmw2001	0
kmw2100	0
kmw3000	0
kmw3200	0
kvw2000	26
kvw2001	0
kvw3000	36
kvw3001	0
kvw3002	0
kvw3500	26
kvw3501	0
kvw3502	0
kvw3800	0
kvw3801	0
kvw3802	0
kvw3900	0
kvw3901	0
kvw3902	0
kvw4000	0
kvw4001	0
kvw4002	0
kvw4200	0
kvw4500	0
kvw5000	0
kvw5001	0
kvw5500	0
kvw5510	0
kvw5600	0
kvw5601	0
kvw6000	2
SELECT SQL_BIG_RESULT t1.pcode, IF(ISNULL(t2.pcode), 0, COUNT(*)) AS count FROM t1 LEFT JOIN t2 ON t1.pcode = t2.pcode GROUP BY t1.pcode;
pcode	count
kld2000	1
klw1000	0
klw1020	0
klw1500	0
klw2000	0
klw2001	0
klw2002	0
klw2500	0
kmw1000	0
kmw1500	0
kmw2000	0
kmw2001	0
kmw2100	0
kmw3000	0
kmw3200	0
kvw2000	26
kvw2001	0
kvw3000	36
kvw3001	0
kvw3002	0
kvw3500	26
kvw3501	0
kvw3502	0
kvw3800	0
kvw3801	0
kvw3802	0
kvw3900	0
kvw3901	0
kvw3902	0
kvw4000	0
kvw4001	0
kvw4002	0
kvw4200	0
kvw4500	0
kvw5000	0
kvw5001	0
kvw5500	0
kvw5510	0
kvw5600	0
kvw5601	0
kvw6000	2
drop table t1,t2;
CREATE TABLE t1 (
id int(11),
pid int(11),
rep_del tinyint(4),
KEY id (id),
KEY pid (pid)
);
INSERT INTO t1 VALUES (1,NULL,NULL);
INSERT INTO t1 VALUES (2,1,NULL);
select * from t1 LEFT JOIN t1 t2 ON (t1.id=t2.pid) AND t2.rep_del IS NULL;
id	pid	rep_del	id	pid	rep_del
1	NULL	NULL	2	1	NULL
2	1	NULL	NULL	NULL	NULL
create index rep_del ON t1(rep_del);
select * from t1 LEFT JOIN t1 t2 ON (t1.id=t2.pid) AND t2.rep_del IS NULL;
id	pid	rep_del	id	pid	rep_del
1	NULL	NULL	2	1	NULL
2	1	NULL	NULL	NULL	NULL
drop table t1;
CREATE TABLE t1 (
id int(11) DEFAULT '0' NOT NULL,
name tinytext DEFAULT '' NOT NULL,
UNIQUE id (id)
);
INSERT INTO t1 VALUES (1,'yes'),(2,'no');
CREATE TABLE t2 (
id int(11) DEFAULT '0' NOT NULL,
idx int(11) DEFAULT '0' NOT NULL,
UNIQUE id (id,idx)
);
INSERT INTO t2 VALUES (1,1);
explain SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	
1	SIMPLE	t2	ref	id	id	4	test.t1.id	1	Using where; Using index; Not exists
SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
id	name	id	idx
2	no	NULL	NULL
drop table t1,t2;
create table t1 (bug_id mediumint, reporter mediumint);
create table t2 (bug_id mediumint, who mediumint, index(who));
insert into t2 values (1,1),(1,2);
insert into t1 values (1,1),(2,1);
SELECT * FROM t1 LEFT JOIN t2 ON (t1.bug_id =  t2.bug_id AND  t2.who = 2) WHERE  (t1.reporter = 2 OR t2.who = 2);
bug_id	reporter	bug_id	who
1	1	1	2
drop table t1,t2;
create table t1 (fooID smallint unsigned auto_increment, primary key (fooID));
create table t2 (fooID smallint unsigned not null, barID smallint unsigned not null, primary key (fooID,barID));
insert into t1 (fooID) values (10),(20),(30);
insert into t2 values (10,1),(20,2),(30,3);
explain select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	index	NULL	PRIMARY	4	NULL	3	Using index
1	SIMPLE	t1	const	PRIMARY	PRIMARY	2	const	1	Using where; Using index
select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30;
fooID	barID	fooID
10	1	NULL
20	2	NULL
30	3	30
select * from t2 left join t1 ignore index(primary) on t1.fooID = t2.fooID and t1.fooID = 30;
fooID	barID	fooID
10	1	NULL
20	2	NULL
30	3	30
drop table t1,t2;
create table t1 (i int);
create table t2 (i int);
create table t3 (i int);
insert into t1 values(1),(2);
insert into t2 values(2),(3);
insert into t3 values(2),(4);
select * from t1 natural left join t2 natural left join t3;
i
1
2
select * from t1 natural left join t2 where (t2.i is not null)=0;
i
1
select * from t1 natural left join t2 where (t2.i is not null) is not null;
i
1
2
select * from t1 natural left join t2 where (i is not null)=0;
i
select * from t1 natural left join t2 where (i is not null) is not null;
i
1
2
drop table t1,t2,t3;
create table t1 (f1 integer,f2 integer,f3 integer);
create table t2 (f2 integer,f4 integer);
create table t3 (f3 integer,f5 integer);
select * from t1
left outer join t2 using (f2)
left outer join t3 using (f3);
f3	f2	f1	f4	f5
drop table t1,t2,t3;
create table t1 (a1 int, a2 int);
create table t2 (b1 int not null, b2 int);
create table t3 (c1 int, c2 int);
insert into t1 values (1,2), (2,2), (3,2);
insert into t2 values (1,3), (2,3);
insert into t3 values (2,4),        (3,4);
select * from t1 left join t2  on  b1 = a1 left join t3  on  c1 = a1  and  b1 is null;
a1	a2	b1	b2	c1	c2
3	2	NULL	NULL	3	4
1	2	1	3	NULL	NULL
2	2	2	3	NULL	NULL
explain select * from t1 left join t2  on  b1 = a1 left join t3  on  c1 = a1  and  b1 is null;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	
1	SIMPLE	t2	hash_ALL	NULL	#hash#$hj	4	test.t1.a1	2	Using where; Using join buffer (flat, BNLH join)
1	SIMPLE	t3	hash_ALL	NULL	#hash#$hj	5	test.t1.a1	2	Using where; Using join buffer (incremental, BNLH join)
drop table t1, t2, t3;
create table t1 (
a int(11),
b char(10),
key (a)
);
insert into t1 (a) values (1),(2),(3),(4);
create table t2 (a int);
select * from t1 left join t2 on t1.a=t2.a where not (t2.a <=> t1.a);
a	b	a
1	NULL	NULL
2	NULL	NULL
3	NULL	NULL
4	NULL	NULL
select * from t1 left join t2 on t1.a=t2.a having not (t2.a <=> t1.a);
a	b	a
1	NULL	NULL
2	NULL	NULL
3	NULL	NULL
4	NULL	NULL
drop table t1,t2;
create table t1 (
match_id tinyint(3) unsigned not null auto_increment,
home tinyint(3) unsigned default '0',
unique key match_id (match_id),
key match_id_2 (match_id)
);
insert into t1 values("1", "2");
create table t2 (
player_id tinyint(3) unsigned default '0',
match_1_h tinyint(3) unsigned default '0',
key player_id (player_id)
);
insert into t2 values("1", "5");
insert into t2 values("2", "9");
insert into t2 values("3", "3");
insert into t2 values("4", "7");
insert into t2 values("5", "6");
insert into t2 values("6", "8");
insert into t2 values("7", "4");
insert into t2 values("8", "12");
insert into t2 values("9", "11");
insert into t2 values("10", "10");
explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from 
(t2 s left join t1 m on m.match_id = 1) 
order by m.match_id desc;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	s	ALL	NULL	NULL	NULL	NULL	10	Using temporary; Using filesort
1	SIMPLE	m	const	match_id,match_id_2	match_id	1	const	1	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from 
(t2 s left join t1 m on m.match_id = 1) 
order by UUX desc;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	s	ALL	NULL	NULL	NULL	NULL	10	Using temporary; Using filesort
1	SIMPLE	m	const	match_id,match_id_2	match_id	1	const	1	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select s.*, '*', m.*, (s.match_1_h - m.home) UUX from 
(t2 s left join t1 m on m.match_id = 1) 
order by UUX desc;
player_id	match_1_h	*	match_id	home	UUX
8	12	*	1	2	10
9	11	*	1	2	9
10	10	*	1	2	8
2	9	*	1	2	7
6	8	*	1	2	6
4	7	*	1	2	5
5	6	*	1	2	4
1	5	*	1	2	3
7	4	*	1	2	2
3	3	*	1	2	1
explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from 
t2 s straight_join t1 m where m.match_id = 1 
order by UUX desc;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	s	ALL	NULL	NULL	NULL	NULL	10	Using temporary; Using filesort
1	SIMPLE	m	const	match_id,match_id_2	match_id	1	const	1	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select s.*, '*', m.*, (s.match_1_h - m.home) UUX from 
t2 s straight_join t1 m where m.match_id = 1 
order by UUX desc;
player_id	match_1_h	*	match_id	home	UUX
8	12	*	1	2	10
9	11	*	1	2	9
10	10	*	1	2	8
2	9	*	1	2	7
6	8	*	1	2	6
4	7	*	1	2	5
5	6	*	1	2	4
1	5	*	1	2	3
7	4	*	1	2	2
3	3	*	1	2	1
drop table t1, t2;
create table t1 (a int, b int, unique index idx (a, b));
create table t2 (a int, b int, c int, unique index idx (a, b));
insert into t1 values (1, 10), (1,11), (2,10), (2,11);
insert into t2 values (1,10,3);
select t1.a, t1.b, t2.c from t1 left join t2
on t1.a=t2.a and t1.b=t2.b and t2.c=3
where t1.a=1 and t2.c is null;
a	b	c
1	11	NULL
drop table t1, t2;
CREATE TABLE t1 (
ts_id bigint(20) default NULL,
inst_id tinyint(4) default NULL,
flag_name varchar(64) default NULL,
flag_value text,
UNIQUE KEY ts_id (ts_id,inst_id,flag_name)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE t2 (
ts_id bigint(20) default NULL,
inst_id tinyint(4) default NULL,
flag_name varchar(64) default NULL,
flag_value text,
UNIQUE KEY ts_id (ts_id,inst_id,flag_name)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
INSERT INTO t1 VALUES
(111056548820001, 0, 'flag1', NULL),
(111056548820001, 0, 'flag2', NULL),
(2, 0, 'other_flag', NULL);
INSERT INTO t2 VALUES
(111056548820001, 3, 'flag1', 'sss');
SELECT t1.flag_name,t2.flag_value 
FROM t1 LEFT JOIN t2 
ON (t1.ts_id = t2.ts_id AND t1.flag_name = t2.flag_name AND
t2.inst_id = 3) 
WHERE t1.inst_id = 0 AND t1.ts_id=111056548820001 AND
t2.flag_value IS  NULL;
flag_name	flag_value
flag2	NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (
id int(11) unsigned NOT NULL auto_increment,
text_id int(10) unsigned default NULL,
PRIMARY KEY  (id)
);
INSERT INTO t1 VALUES("1", "0");
INSERT INTO t1 VALUES("2", "10");
CREATE TABLE t2 (
text_id char(3) NOT NULL default '',
language_id char(3) NOT NULL default '',
text_data text,
PRIMARY KEY  (text_id,language_id)
);
INSERT INTO t2 VALUES("0", "EN", "0-EN");
INSERT INTO t2 VALUES("0", "SV", "0-SV");
INSERT INTO t2 VALUES("10", "EN", "10-EN");
INSERT INTO t2 VALUES("10", "SV", "10-SV");
SELECT t1.id, t1.text_id, t2.text_data
FROM t1 LEFT JOIN t2
ON t1.text_id = t2.text_id
AND t2.language_id = 'SV'
  WHERE (t1.id LIKE '%' OR t2.text_data LIKE '%');
id	text_id	text_data
1	0	0-SV
2	10	10-SV
DROP TABLE t1, t2;
CREATE TABLE t0 (a0 int PRIMARY KEY);
CREATE TABLE t1 (a1 int PRIMARY KEY);
CREATE TABLE t2 (a2 int);
CREATE TABLE t3 (a3 int);
INSERT INTO t0 VALUES (1);
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1), (2);
INSERT INTO t3 VALUES (1), (2);
SELECT * FROM t1 LEFT JOIN t2 ON a1=0;
a1	a2
1	NULL
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON a1=0;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0;
a1	a2	a3
1	NULL	NULL
EXPLAIN SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	2	
SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1;
a0	a1	a2	a3
1	1	NULL	NULL
EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t0	system	PRIMARY	NULL	NULL	NULL	1	
1	SIMPLE	t1	system	PRIMARY	NULL	NULL	NULL	1	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	2	
INSERT INTO t0 VALUES (0);
INSERT INTO t1 VALUES (0);
SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=5 WHERE a0=a1 AND a0=1;
a0	a1	a2	a3
1	1	NULL	NULL
EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=5 WHERE a0=a1 AND a0=1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t0	const	PRIMARY	PRIMARY	4	const	1	Using index
1	SIMPLE	t1	const	PRIMARY	PRIMARY	4	const	1	Using index
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	2	
drop table t1,t2;
create table t1 (a int, b int);
insert into t1 values (1,1),(2,2),(3,3);
create table t2 (a int, b int);
insert into t2 values (1,1), (2,2);
select * from t2 right join t1 on t2.a=t1.a;
a	b	a	b
1	1	1	1
2	2	2	2
NULL	NULL	3	3
select straight_join * from t2 right join t1 on t2.a=t1.a;
a	b	a	b
1	1	1	1
2	2	2	2
NULL	NULL	3	3
DROP TABLE t0,t1,t2,t3;
CREATE TABLE t1 (a int PRIMARY KEY, b int);
CREATE TABLE t2 (a int PRIMARY KEY, b int);
INSERT INTO t1 VALUES (1,1), (2,1), (3,1), (4,2);
INSERT INTO t2 VALUES (1,2), (2,2);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a;
a	b	a	b
1	1	1	2
2	1	2	2
3	1	NULL	NULL
4	2	NULL	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t1.b=1;
a	b	a	b
1	1	1	2
2	1	2	2
3	1	NULL	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
WHERE t1.b=1 XOR (NOT ISNULL(t2.a) AND t2.b=1);
a	b	a	b
1	1	1	2
2	1	2	2
3	1	NULL	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE not(0+(t1.a=30 and t2.b=1));
a	b	a	b
1	1	1	2
2	1	2	2
3	1	NULL	NULL
4	2	NULL	NULL
DROP TABLE t1,t2;
set group_concat_max_len=5;
create table t1 (a int, b varchar(20));
create table t2 (a int, c varchar(20));
insert into t1 values (1,"aaaaaaaaaa"),(2,"bbbbbbbbbb");
insert into t2 values (1,"cccccccccc"),(2,"dddddddddd");
select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by t1.a;
group_concat(t1.b,t2.c)
aaaaa
bbbbb
Warnings:
Warning	1260	Row 1 was cut by group_concat()
Warning	1260	Row 2 was cut by group_concat()
select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by t1.a;
group_concat(t1.b,t2.c)
aaaaa
bbbbb
Warnings:
Warning	1260	Row 1 was cut by group_concat()
Warning	1260	Row 2 was cut by group_concat()
select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by a;
group_concat(t1.b,t2.c)
aaaaa
bbbbb
Warnings:
Warning	1260	Row 1 was cut by group_concat()
Warning	1260	Row 2 was cut by group_concat()
select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by a;
group_concat(t1.b,t2.c)
aaaaa
bbbbb
Warnings:
Warning	1260	Row 1 was cut by group_concat()
Warning	1260	Row 2 was cut by group_concat()
drop table t1, t2;
set group_concat_max_len=default;
create table t1 (gid smallint(5) unsigned not null, x int(11) not null, y int(11) not null, art int(11) not null, primary key  (gid,x,y));
insert t1 values (1, -5, -8, 2), (1, 2, 2, 1), (1, 1, 1, 1);
create table t2 (gid smallint(5) unsigned not null, x int(11) not null, y int(11) not null, id int(11) not null, primary key  (gid,id,x,y), key id (id));
insert t2 values (1, -5, -8, 1), (1, 1, 1, 1), (1, 2, 2, 1);
create table t3 ( set_id smallint(5) unsigned not null, id tinyint(4) unsigned not null, name char(12) not null, primary key  (id,set_id));
insert t3 values (0, 1, 'a'), (1, 1, 'b'), (0, 2, 'c'), (1, 2, 'd'), (1, 3, 'e'), (1, 4, 'f'), (1, 5, 'g'), (1, 6, 'h');
explain select name from t1 left join t2 on t1.x = t2.x and t1.y = t2.y
left join t3 on t1.art = t3.id where t2.id =1 and t2.x = -5 and t2.y =-8
and t1.gid =1 and t2.gid =1 and t3.set_id =1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	const	PRIMARY	PRIMARY	10	const,const,const	1	
1	SIMPLE	t2	const	PRIMARY,id	PRIMARY	14	const,const,const,const	1	Using index
1	SIMPLE	t3	const	PRIMARY	PRIMARY	3	const,const	1	
drop tables t1,t2,t3;
CREATE TABLE t1 (EMPNUM INT, GRP INT);
INSERT INTO t1 VALUES (0, 10);
INSERT INTO t1 VALUES (2, 30);
CREATE TABLE t2 (EMPNUM INT, NAME CHAR(5));
INSERT INTO t2 VALUES (0, 'KERI');
INSERT INTO t2 VALUES (9, 'BARRY');
CREATE VIEW v1 AS
SELECT COALESCE(t2.EMPNUM,t1.EMPNUM) AS EMPNUM, NAME, GRP
FROM t2 LEFT OUTER JOIN t1 ON t2.EMPNUM=t1.EMPNUM;
SELECT * FROM v1;
EMPNUM	NAME	GRP
0	KERI	10
9	BARRY	NULL
SELECT * FROM v1 WHERE EMPNUM < 10;
EMPNUM	NAME	GRP
0	KERI	10
9	BARRY	NULL
DROP VIEW v1;
DROP TABLE t1,t2;
CREATE TABLE t1 (c11 int);
CREATE TABLE t2 (c21 int);
INSERT INTO t1 VALUES (30), (40), (50);
INSERT INTO t2 VALUES (300), (400), (500);
SELECT * FROM t1 LEFT JOIN t2 ON (c11=c21 AND c21=30) WHERE c11=40;
c11	c21
40	NULL
DROP TABLE t1, t2;
CREATE TABLE t1 (a int PRIMARY KEY, b int);
CREATE TABLE t2 (a int PRIMARY KEY, b int);
INSERT INTO t1 VALUES (1,2), (2,1), (3,2), (4,3), (5,6), (6,5), (7,8), (8,7), (9,10);
INSERT INTO t2 VALUES (3,0), (4,1), (6,4), (7,5);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b <= t1.a AND t1.a <= t1.b;
a	b	a	b
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a BETWEEN t2.b AND t1.b;
a	b	a	b
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT BETWEEN t2.b AND t1.b);
a	b	a	b
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b > t1.a OR t1.a > t1.b;
a	b	a	b
2	1	NULL	NULL
3	2	3	0
4	3	4	1
6	5	6	4
8	7	NULL	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT BETWEEN t2.b AND t1.b;
a	b	a	b
2	1	NULL	NULL
3	2	3	0
4	3	4	1
6	5	6	4
8	7	NULL	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a BETWEEN t2.b AND t1.b);
a	b	a	b
2	1	NULL	NULL
3	2	3	0
4	3	4	1
6	5	6	4
8	7	NULL	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t2.b > t1.a OR t1.a > t1.b;
a	b	a	b
2	1	NULL	NULL
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
8	7	NULL	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a AND t1.a BETWEEN t2.b AND t1.b);
a	b	a	b
2	1	NULL	NULL
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
8	7	NULL	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a AND (t2.b > t1.a OR t1.a > t1.b);
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a OR t1.a BETWEEN t2.b AND t1.b);
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT IN(t2.a, t2.b));
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a != t1.b AND t1.a != t2.b;
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT IN(t1.b, t2.b);
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a IN(t1.b, t2.b));
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b OR (t1.a != t2.a AND t1.a != t2.b);
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b AND t1.a IN(t2.a, t2.b));
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b AND t1.a != t1.b AND t1.a != t2.b;
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b OR t1.a IN(t1.b, t2.b));
a	b	a	b
3	2	3	0
4	3	4	1
6	5	6	4
7	8	7	5
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ALL	PRIMARY	NULL	NULL	NULL	4	
1	SIMPLE	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.a	1	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ALL	PRIMARY	NULL	NULL	NULL	4	Using where
1	SIMPLE	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.a	1	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a > IF(t1.a = t2.b-2, t2.b, t2.b-1);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ALL	PRIMARY	NULL	NULL	NULL	4	Using where
1	SIMPLE	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.a	1	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
DROP TABLE t1,t2;
DROP VIEW IF EXISTS v1,v2;
DROP TABLE IF EXISTS t1,t2;
CREATE TABLE t1 (a int);
CREATE table t2 (b int);
INSERT INTO t1 VALUES (1), (2), (3), (4), (1), (1), (3);
INSERT INTO t2 VALUES (2), (3);
CREATE VIEW v1 AS SELECT a FROM t1 JOIN t2 ON t1.a=t2.b;
CREATE VIEW v2 AS SELECT b FROM t2 JOIN t1 ON t2.b=t1.a;
SELECT v1.a, v2. b 
FROM v1 LEFT OUTER JOIN v2 ON (v1.a=v2.b) AND (v1.a >= 3)
GROUP BY v1.a;
a	b
2	NULL
3	3
SELECT v1.a, v2. b 
FROM { OJ v1 LEFT OUTER JOIN v2 ON (v1.a=v2.b) AND (v1.a >= 3) }
GROUP BY v1.a;
a	b
2	NULL
3	3
DROP VIEW v1,v2;
DROP TABLE t1,t2;
CREATE TABLE t1 (a int);
CREATE TABLE t2 (b int);
INSERT INTO t1 VALUES (1), (2), (3), (4);
INSERT INTO t2 VALUES (2), (3);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1);
a	b
1	NULL
2	2
3	3
4	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1 OR 1);
a	b
1	NULL
2	2
3	3
4	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (0 OR 1);
a	b
1	NULL
2	2
3	3
4	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1 OR 2=2);
a	b
1	NULL
2	2
3	3
4	NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1 OR 1=0);
a	b
1	NULL
2	2
3	3
4	NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (
f1 varchar(16) collate latin1_swedish_ci PRIMARY KEY,
f2 varchar(16) collate latin1_swedish_ci
);
CREATE TABLE t2 (
f1 varchar(16) collate latin1_swedish_ci PRIMARY KEY,
f3 varchar(16) collate latin1_swedish_ci
);
INSERT INTO t1 VALUES ('bla','blah');
INSERT INTO t2 VALUES ('bla','sheep');
SELECT * FROM t1 JOIN t2 USING(f1) WHERE f1='Bla';
f1	f2	f3
bla	blah	sheep
SELECT * FROM t1 LEFT JOIN t2 USING(f1) WHERE f1='bla';
f1	f2	f3
bla	blah	sheep
SELECT * FROM t1 LEFT JOIN t2 USING(f1) WHERE f1='Bla';
f1	f2	f3
bla	blah	sheep
DROP TABLE t1,t2;
CREATE TABLE t1 (id int PRIMARY KEY, a varchar(8));
CREATE TABLE t2 (id int NOT NULL, b int NOT NULL, INDEX idx(id));
INSERT INTO t1 VALUES
(1,'aaaaaaa'), (5,'eeeeeee'), (4,'ddddddd'), (2,'bbbbbbb'), (3,'ccccccc');
INSERT INTO t2 VALUES
(3,10), (2,20), (5,30), (3,20), (5,10), (3,40), (3,30), (2,10), (2,40);
EXPLAIN
SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	
1	SIMPLE	t2	ref	idx	idx	4	test.t1.id	1	Using where; Not exists; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
flush status;
SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL;
id	a
1	aaaaaaa
4	ddddddd
show status like 'Handler_read%';
Variable_name	Value
Handler_read_first	0
Handler_read_key	5
Handler_read_last	0
Handler_read_next	9
Handler_read_prev	0
Handler_read_retry	0
Handler_read_rnd	3
Handler_read_rnd_deleted	0
Handler_read_rnd_next	6
DROP TABLE t1,t2;
CREATE TABLE t1 (c int  PRIMARY KEY, e int NOT NULL);
INSERT INTO t1 VALUES (1,0), (2,1);
CREATE TABLE t2 (d int PRIMARY KEY);
INSERT INTO t2 VALUES (1), (2), (3);
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d IS NULL;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	const	PRIMARY	PRIMARY	4	const	1	
1	SIMPLE	t2	index	NULL	PRIMARY	4	NULL	3	Using where; Using index; Not exists
SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d IS NULL;
c	e	d
1	0	NULL
SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d<=>NULL;
c	e	d
1	0	NULL
DROP TABLE t1,t2;
#
# Bug#47650: using group by with rollup without indexes returns incorrect 
# results with where
#
CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1);
CREATE TABLE t2 ( a INT, b INT );
INSERT INTO t2 VALUES (1, 1),(1, 2),(1, 3),(2, 4),(2, 5);
EXPLAIN
SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b )
FROM t1 LEFT JOIN t2 USING( a )
GROUP BY t1.a WITH ROLLUP;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	Using temporary; Using filesort
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	5	Using where
SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b )
FROM t1 LEFT JOIN t2 USING( a )
GROUP BY t1.a WITH ROLLUP;
a	COUNT( t2.b )	SUM( t2.b )	MAX( t2.b )
1	3	6	3
NULL	3	6	3
EXPLAIN
SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b )
FROM t1 JOIN t2 USING( a )
GROUP BY t1.a WITH ROLLUP;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	5	Using where; Using filesort
SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b )
FROM t1 JOIN t2 USING( a )
GROUP BY t1.a WITH ROLLUP;
a	COUNT( t2.b )	SUM( t2.b )	MAX( t2.b )
1	3	6	3
NULL	3	6	3
DROP TABLE t1, t2;
#
# Bug#51598 Inconsistent behaviour with a COALESCE statement inside an IN comparison
#
CREATE TABLE t1(f1 INT, f2 INT, f3 INT);
INSERT INTO t1 VALUES (1, NULL, 3);
CREATE TABLE t2(f1 INT, f2 INT);
INSERT INTO t2 VALUES (2, 1);
EXPLAIN EXTENDED SELECT * FROM t1 LEFT JOIN t2 ON t1.f2 = t2.f2
WHERE (COALESCE(t1.f1, t2.f1), f3) IN ((1, 3), (2, 2));
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	100.00	
1	SIMPLE	t2	system	NULL	NULL	NULL	NULL	1	100.00	
Warnings:
Note	1003	select 1 AS `f1`,NULL AS `f2`,3 AS `f3`,NULL AS `f1`,NULL AS `f2` from `test`.`t2` where 1
SELECT * FROM t1 LEFT JOIN t2 ON t1.f2 = t2.f2
WHERE (COALESCE(t1.f1, t2.f1), f3) IN ((1, 3), (2, 2));
f1	f2	f3	f1	f2
1	NULL	3	NULL	NULL
DROP TABLE t1, t2;
#
# Bug#52357: Assertion failed: join->best_read in greedy_search 
# optimizer_search_depth=0
#
CREATE TABLE t1( a INT );
INSERT INTO t1 VALUES (1),(2);
SET optimizer_search_depth = 0;
# Should not core dump on query preparation
EXPLAIN
SELECT 1
FROM t1 tt3 LEFT  OUTER JOIN t1 tt4 ON 1
LEFT  OUTER JOIN t1 tt5 ON 1
LEFT  OUTER JOIN t1 tt6 ON 1
LEFT  OUTER JOIN t1 tt7 ON 1
LEFT  OUTER JOIN t1 tt8 ON 1
RIGHT OUTER JOIN t1 tt2 ON 1
RIGHT OUTER JOIN t1 tt1 ON 1
STRAIGHT_JOIN    t1 tt9 ON 1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	tt1	ALL	NULL	NULL	NULL	NULL	2	
1	SIMPLE	tt2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
1	SIMPLE	tt3	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (incremental, BNL join)
1	SIMPLE	tt4	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (incremental, BNL join)
1	SIMPLE	tt5	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (incremental, BNL join)
1	SIMPLE	tt6	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (incremental, BNL join)
1	SIMPLE	tt7	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (incremental, BNL join)
1	SIMPLE	tt8	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (incremental, BNL join)
1	SIMPLE	tt9	ALL	NULL	NULL	NULL	NULL	2	Using join buffer (incremental, BNL join)
SET optimizer_search_depth = DEFAULT;
DROP TABLE t1;
#
# Bug#46091 STRAIGHT_JOIN + RIGHT JOIN returns different result
#
CREATE TABLE t1 (f1 INT NOT NULL);
INSERT INTO t1 VALUES (9),(0);
CREATE TABLE t2 (f1 INT NOT NULL);
INSERT INTO t2 VALUES
(5),(3),(0),(3),(1),(0),(1),(7),(1),(0),(0),(8),(4),(9),(0),(2),(0),(8),(5),(1);
SELECT STRAIGHT_JOIN COUNT(*) FROM t1 TA1
RIGHT JOIN t2 TA2 JOIN t2 TA3 ON TA2.f1 ON TA3.f1;
COUNT(*)
476
EXPLAIN SELECT STRAIGHT_JOIN COUNT(*) FROM t1 TA1
RIGHT JOIN t2 TA2 JOIN t2 TA3 ON TA2.f1 ON TA3.f1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	TA2	ALL	NULL	NULL	NULL	NULL	20	Using where
1	SIMPLE	TA3	ALL	NULL	NULL	NULL	NULL	20	Using join buffer (flat, BNL join)
1	SIMPLE	TA1	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (incremental, BNL join)
DROP TABLE t1, t2;
#
# Bug#48971 Segfault in add_found_match_trig_cond () at sql_select.cc:5990
#
CREATE TABLE t1(f1 INT, PRIMARY KEY (f1));
INSERT INTO t1 VALUES (1),(2);
EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1
LEFT JOIN t1 AS jt2
RIGHT JOIN t1 AS jt3
JOIN t1 AS jt4 ON 1
LEFT JOIN t1 AS jt5 ON 1
ON 1
RIGHT JOIN t1 AS jt6 ON jt6.f1
ON 1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jt1	index	NULL	PRIMARY	4	NULL	2	100.00	Using index
1	SIMPLE	jt6	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index; Using join buffer (flat, BNL join)
1	SIMPLE	jt3	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index; Using join buffer (incremental, BNL join)
1	SIMPLE	jt4	index	NULL	PRIMARY	4	NULL	2	100.00	Using index; Using join buffer (incremental, BNL join)
1	SIMPLE	jt5	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index; Using join buffer (incremental, BNL join)
1	SIMPLE	jt2	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index; Using join buffer (incremental, BNL join)
Warnings:
Note	1003	select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt1` left join (`test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on(`test`.`jt6`.`f1` is true and 1)) on(1) where 1
EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1
RIGHT JOIN t1 AS jt2
RIGHT JOIN t1 AS jt3
JOIN t1 AS jt4 ON 1
LEFT JOIN t1 AS jt5 ON 1
ON 1
RIGHT JOIN t1 AS jt6 ON jt6.f1
ON 1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jt6	index	NULL	PRIMARY	4	NULL	2	100.00	Using index
1	SIMPLE	jt3	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index; Using join buffer (flat, BNL join)
1	SIMPLE	jt4	index	NULL	PRIMARY	4	NULL	2	100.00	Using index; Using join buffer (incremental, BNL join)
1	SIMPLE	jt5	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index; Using join buffer (incremental, BNL join)
1	SIMPLE	jt2	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index; Using join buffer (incremental, BNL join)
1	SIMPLE	jt1	index	NULL	PRIMARY	4	NULL	2	100.00	Using where; Using index; Using join buffer (incremental, BNL join)
Warnings:
Note	1003	select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on(`test`.`jt6`.`f1` is true 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
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	4
Handler_read_last	0
Handler_read_next	5
Handler_read_prev	0
Handler_read_retry	0
Handler_read_rnd	5
Handler_read_rnd_deleted	0
Handler_read_rnd_next	1048581
flush status;
select sum(t3.b) from t2 left join t3 on t3.a=t2.a and t2.a <> 10;
sum(t3.b)
1006
show status like "handler_read%";
Variable_name	Value
Handler_read_first	0
Handler_read_key	4
Handler_read_last	0
Handler_read_next	5
Handler_read_prev	0
Handler_read_retry	0
Handler_read_rnd	5
Handler_read_rnd_deleted	0
Handler_read_rnd_next	1048581
drop table t1,t2,t3;
#
# Bug#57688 Assertion `!table || (!table->write_set || bitmap_is_set(table->write_set, field
#
CREATE TABLE t1 (f1 INT NOT NULL, PRIMARY KEY (f1));
CREATE TABLE t2 (f1 INT NOT NULL, f2 INT NOT NULL, PRIMARY KEY (f1, f2));
INSERT INTO t1 VALUES (4);
INSERT INTO t2 VALUES (3, 3);
INSERT INTO t2 VALUES (7, 7);
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1
WHERE t1.f1 = 4
GROUP BY t2.f1, t2.f2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	system	PRIMARY	NULL	NULL	NULL	1	Using temporary; Using filesort
1	SIMPLE	t2	ref	PRIMARY	PRIMARY	4	const	1	Using index
SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1
WHERE t1.f1 = 4
GROUP BY t2.f1, t2.f2;
f1	f1	f2
4	NULL	NULL
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1
WHERE t1.f1 = 4 AND t2.f1 IS NOT NULL AND t2.f2 IS NOT NULL
GROUP BY t2.f1, t2.f2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	system	PRIMARY	NULL	NULL	NULL	1	
1	SIMPLE	t2	ref	PRIMARY	PRIMARY	4	const	1	Using where; Using index
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	t2	hash_index	PRIMARY	#hash#PRIMARY:PRIMARY	4:4	test.t1.b	27	3.70	Using index; Using join buffer (flat, BNLH join)
1	SIMPLE	t3	hash_ALL	PRIMARY	#hash#PRIMARY	4	test.t1.b	10	10.00	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`.`t2`.`b` = `test`.`t1`.`b` and `test`.`t3`.`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	1	100.00	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
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	88
5	8	81
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	1	100.00	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
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	88
5	8	81
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	hash_ALL	NULL	#hash#$hj	5	test.t1.i1	2	10.00	Using where; Using join buffer (flat, BNLH join)
1	SIMPLE	t3	hash_ALL	NULL	#hash#$hj	5	test.t1.i1	2	10.00	Using where; Using join buffer (incremental, BNLH join)
Warnings:
Note	1003	select `test`.`t1`.`i1` AS `i1`,`test`.`t2`.`i2` AS `i2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`d3` AS `d3` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(`test`.`t2`.`i2` = `test`.`t1`.`i1` and `test`.`t3`.`i3` = `test`.`t1`.`i1` and `test`.`t1`.`i1` is not null and `test`.`t1`.`i1` is not null) 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	hash_ALL	NULL	#hash#$hj	5	const	2	10.00	Using where; Using join buffer (flat, BNLH join)
Warnings:
Note	1003	select 10 AS `a`,8 AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t3`.`d` AS `d` from `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`d` = 10 and 10 is not null) 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<400, 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	282	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; Using join buffer (flat, BNL join)
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; Using join buffer (flat, BNL join)
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	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1	SIMPLE	t2	eq_ref	PRIMARY	PRIMARY	4	test.t3.i3	1	100.00	Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
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	Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1	SIMPLE	t2	eq_ref	PRIMARY	PRIMARY	4	test.t3.i3	1	100.00	Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
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	hash_ALL	NULL	#hash#$hj	5	test.t1.x	2	10.00	Using where; Using join buffer (flat, BNLH join)
Warnings:
Note	1003	select `test`.`t1`.`x` AS `x`,`test`.`t2`.`x` AS `x`,ifnull(`test`.`t2`.`x`,0) AS `IFNULL(t2.x,0)`,`f`(`test`.`t2`.`x`,0) AS `f(t2.x,0)` from `test`.`t` `t1` left join `test`.`t` `t2` on(`test`.`t2`.`x` = `test`.`t1`.`x` and `test`.`t1`.`x` is not null) 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	hash_ALL	NULL	#hash#$hj	5	test.t1.x	2	10.00	Using where; Using join buffer (flat, BNLH join)
Warnings:
Note	1003	select `test`.`t1`.`x` AS `x`,`test`.`t2`.`x` AS `x`,ifnull(`test`.`t2`.`x`,0) AS `IFNULL(t2.x,0)`,`f`(`test`.`t2`.`x`,0) AS `f(t2.x,0)` from `test`.`t` `t1` left join `test`.`t` `t2` on(`test`.`t2`.`x` = `test`.`t1`.`x` and `test`.`t1`.`x` is not null) where `f`(`test`.`t2`.`x`,0) = 0
drop function f;
drop table t;
CREATE TABLE t1 (
col1 DECIMAL(33,5) NULL DEFAULT NULL,
col2 DECIMAL(33,5) NULL DEFAULT NULL
);
CREATE TABLE t2 (
col1 DECIMAL(33,5) NULL DEFAULT NULL,
col2 DECIMAL(33,5) NULL DEFAULT NULL,
col3 DECIMAL(33,5) NULL DEFAULT NULL
);
INSERT INTO t1 VALUES (2, 1.1), (2, 2.1);
INSERT INTO t2 VALUES (3, 3.1, 4), (1, 1, NULL);
CREATE FUNCTION f1 ( p_num DECIMAL(45,15), p_return DECIMAL(45,15))
RETURNS decimal(33,5)
LANGUAGE SQL
DETERMINISTIC
CONTAINS SQL
SQL SECURITY INVOKER
BEGIN
IF p_num IS NULL THEN
RETURN p_return;
ELSE
RETURN p_num;
END IF;
END |
SELECT t1.col1, t2.col1, t2.col3
FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2
WHERE IFNULL(t2.col3,0) = 0;
col1	col1	col3
2.00000	NULL	NULL
2.00000	NULL	NULL
EXPLAIN EXTENDED SELECT t1.col1, t2.col1, t2.col3
FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2
WHERE IFNULL(t2.col3,0) = 0;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	SIMPLE	t2	hash_ALL	NULL	#hash#$hj	17	test.t1.col1	2	10.00	Using where; Using join buffer (flat, BNLH join)
Warnings:
Note	1003	select `test`.`t1`.`col1` AS `col1`,`test`.`t2`.`col1` AS `col1`,`test`.`t2`.`col3` AS `col3` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`col2` = `test`.`t1`.`col1` and `test`.`t1`.`col1` is not null) 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	hash_ALL	NULL	#hash#$hj	17	test.t1.col1	2	10.00	Using where; Using join buffer (flat, BNLH join)
Warnings:
Note	1003	select `test`.`t1`.`col1` AS `col1`,`test`.`t2`.`col1` AS `col1`,`test`.`t2`.`col3` AS `col3` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`col2` = `test`.`t1`.`col1` and `test`.`t1`.`col1` is not null) 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
7	7
3	3
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	hash_ALL	NULL	#hash#$hj	5	test.t1.a	3	10.00	Using where; Using join buffer (flat, BNLH join)
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` and `test`.`t1`.`a` is not null) 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	hash_ALL	NULL	#hash#$hj	5	test.t1.a	3	10.00	Using where; Using join buffer (flat, BNLH join)
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`b` = `test`.`t1`.`a` and `test`.`t1`.`a` is not null) where `test`.`t2`.`b` > 3 is not false
drop table t1,t2;
# end of 5.5 tests
#
# MDEV-19258: chained right joins all converted to inner joins
#
CREATE TABLE t1 (
id int NOT NULL AUTO_INCREMENT,
timestamp bigint NOT NULL,
modifiedBy varchar(255) DEFAULT NULL,
PRIMARY KEY (id)
);
CREATE TABLE t2 (
id int NOT NULL,
REV int NOT NULL,
REVTYPE tinyint DEFAULT NULL,
profile_id int DEFAULT NULL,
PRIMARY KEY (id,REV)
);
CREATE TABLE t3 (
id int NOT NULL,
REV int NOT NULL,
person_id int DEFAULT NULL,
PRIMARY KEY (id,REV)
);
CREATE TABLE t4 (
id int NOT NULL,
REV int NOT NULL,
PRIMARY KEY (id,REV)
);
INSERT INTO t1 VALUES
(1,1294391193890,'Cxqy$*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	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.REV	1	100.00	Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1	SIMPLE	t3	ref	PRIMARY	PRIMARY	4	test.t2.profile_id	1	100.00	Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1	SIMPLE	t4	ref	PRIMARY	PRIMARY	4	test.t3.person_id	1	100.00	Using index
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	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.REV	1	100.00	Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1	SIMPLE	t3	ref	PRIMARY	PRIMARY	4	test.t2.profile_id	1	100.00	Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1	SIMPLE	t4	ref	PRIMARY	PRIMARY	4	test.t3.person_id	1	100.00	Using index
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'
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'
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 'SELECT'
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
2	3	NULL	NULL	NULL	NULL
1	4	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	hash_range	a	#hash#$hj:a	5:5	test.t1.a	5	Using where; Rowid-ordered scan; Using join buffer (flat, BNLH join)
# This must use range for table t3, too:
explain select * from t1 left join (t3 join t2) on t1.a=t3.b and t3.a<5;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	10	
1	SIMPLE	t3	hash_range	a	#hash#$hj:a	5:5	test.t1.a	5	Using where; Rowid-ordered scan; Using join buffer (flat, BNLH join)
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	Using join buffer (incremental, BNL join)
#
# .. 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	hash_ALL	NULL	#hash#$hj	5	test.t1.a	1000	0.50	Using where; Using join buffer (flat, BNLH join)
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` left join `test`.`t3` on(`test`.`t3`.`b` = `test`.`t1`.`a` and `test`.`t3`.`a` < 5 and `test`.`t1`.`a` is not null) where 1
# t3.filtered must less than 100%, too:
explain extended select * from t1 left join (t3 join t2) on t1.a=t3.b and t3.a<5;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	10	100.00	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	100.00	Using where; Using join buffer (flat, BNL join)
1	SIMPLE	t3	hash_ALL	NULL	#hash#$hj	5	test.t1.a	1000	0.50	Using where; Using join buffer (incremental, BNLH join)
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 and `test`.`t1`.`a` is not null) 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;
#
# MDEV-28602 Wrong result with outer join, merged derived table and view
#
create table t1 (
Election int(10) unsigned NOT NULL
);
insert into t1 (Election) values (1);
create table t2 (
VoteID int(10),
ElectionID int(10),
UserID int(10)
);
insert into t2 (ElectionID, UserID) values (2,  30), (3, 30);
create view v1 as select * from t1
left join ( select 'Y' AS Voted, ElectionID from t2 ) AS T 
on T.ElectionID = t1.Election
limit 9;
select * from v1;
Election	Voted	ElectionID
1	NULL	NULL
drop table t1, t2;
drop view v1;
#
# and another contrived example showing a bit of hierarchy
#
create table t10 (a int);
create table t20 (b int);
insert into t10 values (1),(2);
insert into t20 values (1),(3);
create view v10 as select *, 'U' as u from t10 left join (select 'Y' as y, t20.b from t20) dt1 on t10.a= dt1.b limit 3;
create table t30 (c int);
insert into t30 values (1),(3);
create view v20 as select * from t30 left join (select 'X' as x, v10.u, v10.y, v10.b from v10) dt2 on t30.c=dt2.b limit 6;
select * from v20 limit 9;
c	x	u	y	b
1	X	U	Y	1
3	NULL	NULL	NULL	NULL
drop view v10, v20;
drop table t10, t20, t30;
#
# More complex testcase
#
create table t2 (b int);
insert into t2 values (3),(7),(1);
create table t3 (c int);
insert into t3 values (3),(1);
create table t1 (a int);
insert into t1 values (1),(2),(7),(1);
select * from
(
select * from
(select 'Z' as z, t1.a from t1) dt1
left join 
(select 'Y' as y, t2.b from t2) dt2
left join
(select 'X' as x, t3.c from t3) dt3
on dt2.b=dt3.c
on dt1.a=dt2.b
limit 9
) dt;
z	a	y	b	x	c
Z	1	Y	1	X	1
Z	1	Y	1	X	1
Z	7	Y	7	NULL	NULL
Z	2	NULL	NULL	NULL	NULL
create view v3(x,c) as select * from (select 'X' as x, t3.c from t3) dt3;
create view v2(y,b) as select * from (select 'Y' as y, t2.b from t2) dt2;
create view v0(y,b,x,c) as select * from v2 left join v3 on v2.b=v3.c;
create view v1 as  select 'Z' as z, t1.a, v0.*  from t1 left join v0 on t1.a=v0.b limit 9;
select * from v1;
z	a	y	b	x	c
Z	1	Y	1	X	1
Z	1	Y	1	X	1
Z	7	Y	7	NULL	NULL
Z	2	NULL	NULL	NULL	NULL
set statement join_cache_level=0 for
select * from v1;
z	a	y	b	x	c
Z	1	Y	1	X	1
Z	2	NULL	NULL	NULL	NULL
Z	7	Y	7	NULL	NULL
Z	1	Y	1	X	1
drop view v0, v1, v2, v3;
drop table t1, t2, t3;
# end of 10.3 tests
#
# MDEV-37653 Unexpected result of prepared statement when use boolean value as parameters
#
create table t0(c0 real);
create table t1 like t0;
insert into t1 values (1);
insert into t0 values (1);
select t1.c0, t0.c0 from t1 left join t0 on 0 where not (t0.c0 is true);
c0	c0
1	NULL
select t1.c0, t0.c0 from t1 left join t0 on 0 where not (t0.c0 is false);
c0	c0
1	NULL
select t1.c0, t0.c0 from t1 left join t0 on false where (false or ((t0.c0 is true) in (false)));
c0	c0
1	NULL
drop table t0, t1;
# end of 10.11 tests
SET optimizer_switch=@org_optimizer_switch;
