join_outer.test

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

);
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;
SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
drop table t1,t2;

#
# Test problem with using key_column= constant in ON and WHERE
#
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);
drop table t1,t2;

#
# Test problem with LEFT JOIN

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;
select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30;
select * from t2 left join t1 ignore index(primary) on t1.fooID = t2.fooID and t1.fooID = 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;
select * from t1 natural left join t2 where (t2.i is not null)=0;
select * from t1 natural left join t2 where (t2.i is not null) is not null;
select * from t1 natural left join t2 where (i is not null)=0;
select * from t1 natural left join t2 where (i is not null) is not null;
drop table t1,t2,t3;

#
# Test of USING
#
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);
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;
explain select * from t1 left join t2  on  b1 = a1 left join t3  on  c1 = a1  and  b1 is null;

drop table t1, t2, t3;

# Test for BUG#8711 '<=>' was considered to be a NULL-rejecting predicate.
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);
select * from t1 left join t2 on t1.a=t2.a having not (t2.a <=> t1.a);
drop table t1,t2;

# Test for BUG#5088

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;
  
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;

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;

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;

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;

drop table t1, t2;

# Tests for bugs #6307 and 6460

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;

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;

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 '%');

DROP TABLE t1, t2;

# Test for bug #5896  

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;
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON a1=0;
SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0;
EXPLAIN SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0;
SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1;
EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1;

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;
EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=5 WHERE a0=a1 AND a0=1;

# Test for BUG#4480
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;
select straight_join * from t2 right join t1 on t2.a=t1.a;

DROP TABLE t0,t1,t2,t3;

#
# Test for bug #9017: left join mistakingly converted to inner join
#

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;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t1.b=1;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
  WHERE t1.b=1 XOR (NOT ISNULL(t2.a) AND t2.b=1);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE not(0+(t1.a=30 and t2.b=1));

DROP TABLE t1,t2;

# Bug #8681: Bad warning message when group_concat() exceeds max length
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;
select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by t1.a;
select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by a;
select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by a;
drop table t1, t2;
set group_concat_max_len=default;

# End of 4.1 tests

#
# BUG#10162 - ON is merged with WHERE, left join is convered to a regular join
#
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;
drop tables t1,t2,t3;

#
# Test for bug #9938: invalid conversion from outer join to inner join 
# for queries containing indirect reference in WHERE clause
#

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;
SELECT * FROM v1 WHERE EMPNUM < 10;

DROP VIEW v1;
DROP TABLE t1,t2;

#
# Test for bug #11285: false Item_equal on expression in outer join
# 

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;
DROP TABLE t1, t2;
#
# Test for bugs
# #12101: erroneously applied outer join elimination in case of WHERE NOT BETWEEN
# #12102: erroneously missing outer join elimination in case of WHERE IN/IF
#

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;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a BETWEEN t2.b AND t1.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT BETWEEN t2.b AND t1.b);

SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b > t1.a OR t1.a > t1.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT BETWEEN t2.b AND t1.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a BETWEEN t2.b AND t1.b);

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;
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);

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);
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);

SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT IN(t2.a, t2.b));

SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a != t1.b AND t1.a != t2.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT IN(t1.b, t2.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a IN(t1.b, t2.b));

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);
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));

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;
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));

EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
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);

DROP TABLE t1,t2;

#
# Test for bug #17164: ORed FALSE blocked conversion of outer join into join
# 

CREATE TABLE t1 (id int(11) NOT NULL PRIMARY KEY, name varchar(20),
                 INDEX (name)) ENGINE=InnoDB;
CREATE TABLE t2 (id int(11) NOT NULL PRIMARY KEY, fkey int(11),
                 FOREIGN KEY (fkey) REFERENCES t2(id)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,'A1'),(2,'A2'),(3,'B');
INSERT INTO t2 VALUES (1,1),(2,2),(3,2),(4,3),(5,3);

EXPLAIN
SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id 
  WHERE t1.name LIKE 'A%';

EXPLAIN
SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id 
  WHERE t1.name LIKE 'A%' OR FALSE;

DROP TABLE t1,t2;