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mariadb/mysql-test/r/innodb_mysql.result
John H. Embretsen 85bb4aa09e Bug#47746 - main.innodb_mysql fails sporadically: 
Mask part of EXPLAIN output with '#' to account for varying row count estimation.

mysql-test/include/mix1.inc:
  Mask 'rows' column in EXPLAIN output (number varies sometimes between 1 and 2).
mysql-test/r/innodb_mysql.result:
  Update result file after masking of rows estimation in EXPLAIN output.
2009-10-05 15:16:27 +02:00

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set global innodb_support_xa=default;
set session innodb_support_xa=default;
SET SESSION STORAGE_ENGINE = InnoDB;
drop table if exists t1,t2,t3,t1m,t1i,t2m,t2i,t4;
drop procedure if exists p1;
create table t1 (
c_id int(11) not null default '0',
org_id int(11) default null,
unique key contacts$c_id (c_id),
key contacts$org_id (org_id)
);
insert into t1 values
(2,null),(120,null),(141,null),(218,7), (128,1),
(151,2),(234,2),(236,2),(243,2),(255,2),(259,2),(232,3),(235,3),(238,3),
(246,3),(253,3),(269,3),(285,3),(291,3),(293,3),(131,4),(230,4),(231,4);
create table t2 (
slai_id int(11) not null default '0',
owner_tbl int(11) default null,
owner_id int(11) default null,
sla_id int(11) default null,
inc_web int(11) default null,
inc_email int(11) default null,
inc_chat int(11) default null,
inc_csr int(11) default null,
inc_total int(11) default null,
time_billed int(11) default null,
activedate timestamp null default null,
expiredate timestamp null default null,
state int(11) default null,
sla_set int(11) default null,
unique key t2$slai_id (slai_id),
key t2$owner_id (owner_id),
key t2$sla_id (sla_id)
);
insert into t2(slai_id, owner_tbl, owner_id, sla_id) values
(1,3,1,1), (3,3,10,2), (4,3,3,6), (5,3,2,5), (6,3,8,3), (7,3,9,7),
(8,3,6,8), (9,3,4,9), (10,3,5,10), (11,3,11,11), (12,3,7,12);
flush tables;
select si.slai_id
from t1 c join t2 si on
((si.owner_tbl = 3 and si.owner_id = c.org_id) or
( si.owner_tbl = 2 and si.owner_id = c.c_id))
where
c.c_id = 218 and expiredate is null;
slai_id
12
select * from t1 where org_id is null;
c_id org_id
2 NULL
120 NULL
141 NULL
select si.slai_id
from t1 c join t2 si on
((si.owner_tbl = 3 and si.owner_id = c.org_id) or
( si.owner_tbl = 2 and si.owner_id = c.c_id))
where
c.c_id = 218 and expiredate is null;
slai_id
12
drop table t1, t2;
CREATE TABLE t1 (a int, b int, KEY b (b));
CREATE TABLE t2 (a int, b int, PRIMARY KEY (a,b));
CREATE TABLE t3 (a int, b int, c int, PRIMARY KEY (a),
UNIQUE KEY b (b,c), KEY a (a,b,c));
INSERT INTO t1 VALUES (1, 1);
INSERT INTO t1 SELECT a + 1, b + 1 FROM t1;
INSERT INTO t1 SELECT a + 2, b + 2 FROM t1;
INSERT INTO t2 VALUES (1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(1,7),(1,8);
INSERT INTO t2 SELECT a + 1, b FROM t2;
DELETE FROM t2 WHERE a = 1 AND b < 2;
INSERT INTO t3 VALUES (1,1,1),(2,1,2);
INSERT INTO t3 SELECT a + 2, a + 2, 3 FROM t3;
INSERT INTO t3 SELECT a + 4, a + 4, 3 FROM t3;
SELECT STRAIGHT_JOIN SQL_NO_CACHE t1.b, t1.a FROM t1, t3, t2 WHERE
t3.a = t2.a AND t2.b = t1.a AND t3.b = 1 AND t3.c IN (1, 2)
ORDER BY t1.b LIMIT 2;
b a
1 1
2 2
SELECT STRAIGHT_JOIN SQL_NO_CACHE t1.b, t1.a FROM t1, t3, t2 WHERE
t3.a = t2.a AND t2.b = t1.a AND t3.b = 1 AND t3.c IN (1, 2)
ORDER BY t1.b LIMIT 5;
b a
1 1
2 2
2 2
3 3
3 3
DROP TABLE t1, t2, t3;
CREATE TABLE `t1` (`id1` INT) ;
INSERT INTO `t1` (`id1`) VALUES (1),(5),(2);
CREATE TABLE `t2` (
`id1` INT,
`id2` INT NOT NULL,
`id3` INT,
`id4` INT NOT NULL,
UNIQUE (`id2`,`id4`),
KEY (`id1`)
);
INSERT INTO `t2`(`id1`,`id2`,`id3`,`id4`) VALUES
(1,1,1,0),
(1,1,2,1),
(5,1,2,2),
(6,1,2,3),
(1,2,2,2),
(1,2,1,1);
SELECT `id1` FROM `t1` WHERE `id1` NOT IN (SELECT `id1` FROM `t2` WHERE `id2` = 1 AND `id3` = 2);
id1
2
DROP TABLE t1, t2;
create table t1 (c1 int) engine=innodb;
handler t1 open;
handler t1 read first;
c1
Before and after comparison
0
drop table t1;
CREATE TABLE t1(c1 TEXT, UNIQUE (c1(1)), cnt INT DEFAULT 1)
ENGINE=INNODB CHARACTER SET UTF8;
INSERT INTO t1 (c1) VALUES ('1a');
SELECT * FROM t1;
c1 cnt
1a 1
INSERT INTO t1 (c1) VALUES ('1b') ON DUPLICATE KEY UPDATE cnt=cnt+1;
SELECT * FROM t1;
c1 cnt
1a 2
DROP TABLE t1;
CREATE TABLE t1(c1 VARCHAR(2), UNIQUE (c1(1)), cnt INT DEFAULT 1)
ENGINE=INNODB CHARACTER SET UTF8;
INSERT INTO t1 (c1) VALUES ('1a');
SELECT * FROM t1;
c1 cnt
1a 1
INSERT INTO t1 (c1) VALUES ('1b') ON DUPLICATE KEY UPDATE cnt=cnt+1;
SELECT * FROM t1;
c1 cnt
1a 2
DROP TABLE t1;
CREATE TABLE t1(c1 CHAR(2), UNIQUE (c1(1)), cnt INT DEFAULT 1)
ENGINE=INNODB CHARACTER SET UTF8;
INSERT INTO t1 (c1) VALUES ('1a');
SELECT * FROM t1;
c1 cnt
1a 1
INSERT INTO t1 (c1) VALUES ('1b') ON DUPLICATE KEY UPDATE cnt=cnt+1;
SELECT * FROM t1;
c1 cnt
1a 2
DROP TABLE t1;
CREATE TABLE t1 (
a1 decimal(10,0) DEFAULT NULL,
a2 blob,
a3 time DEFAULT NULL,
a4 blob,
a5 char(175) DEFAULT NULL,
a6 timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
a7 tinyblob,
INDEX idx (a6,a7(239),a5)
) ENGINE=InnoDB;
EXPLAIN SELECT a4 FROM t1 WHERE
a6=NULL AND
a4='UNcT5pIde4I6c2SheTo4gt92OV1jgJCVkXmzyf325R1DwLURkbYHwhydANIZMbKTgdcR5xS';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN SELECT t1.a4 FROM t1, t1 t WHERE
t.a6=t.a6 AND t1.a6=NULL AND
t1.a4='UNcT5pIde4I6c2SheTo4gt92OV1jgJCVkXmzyf325R1DwLURkbYHwhydANIZMbKTgdcR5xS';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
DROP TABLE t1;
create table t1m (a int) engine = MEMORY;
create table t1i (a int);
create table t2m (a int) engine = MEMORY;
create table t2i (a int);
insert into t2m values (5);
insert into t2i values (5);
select min(a) from t1i;
min(a)
NULL
select min(7) from t1i;
min(7)
NULL
select min(7) from DUAL;
min(7)
7
explain select min(7) from t2i join t1i;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2i ALL NULL NULL NULL NULL 1
1 SIMPLE t1i ALL NULL NULL NULL NULL 1 Using join buffer
select min(7) from t2i join t1i;
min(7)
NULL
select max(a) from t1i;
max(a)
NULL
select max(7) from t1i;
max(7)
NULL
select max(7) from DUAL;
max(7)
7
explain select max(7) from t2i join t1i;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2i ALL NULL NULL NULL NULL 1
1 SIMPLE t1i ALL NULL NULL NULL NULL 1 Using join buffer
select max(7) from t2i join t1i;
max(7)
NULL
select 1, min(a) from t1i where a=99;
1 min(a)
1 NULL
select 1, min(a) from t1i where 1=99;
1 min(a)
1 NULL
select 1, min(1) from t1i where a=99;
1 min(1)
1 NULL
select 1, min(1) from t1i where 1=99;
1 min(1)
1 NULL
select 1, max(a) from t1i where a=99;
1 max(a)
1 NULL
select 1, max(a) from t1i where 1=99;
1 max(a)
1 NULL
select 1, max(1) from t1i where a=99;
1 max(1)
1 NULL
select 1, max(1) from t1i where 1=99;
1 max(1)
1 NULL
explain select count(*), min(7), max(7) from t1m, t1i;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1m system NULL NULL NULL NULL 0 const row not found
1 SIMPLE t1i ALL NULL NULL NULL NULL 1
select count(*), min(7), max(7) from t1m, t1i;
count(*) min(7) max(7)
0 NULL NULL
explain select count(*), min(7), max(7) from t1m, t2i;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1m system NULL NULL NULL NULL 0 const row not found
1 SIMPLE t2i ALL NULL NULL NULL NULL 1
select count(*), min(7), max(7) from t1m, t2i;
count(*) min(7) max(7)
0 NULL NULL
explain select count(*), min(7), max(7) from t2m, t1i;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2m system NULL NULL NULL NULL 1
1 SIMPLE t1i ALL NULL NULL NULL NULL 1
select count(*), min(7), max(7) from t2m, t1i;
count(*) min(7) max(7)
0 NULL NULL
drop table t1m, t1i, t2m, t2i;
create table t1 (
a1 char(64), a2 char(64), b char(16), c char(16) not null, d char(16), dummy char(64) default ' '
) ENGINE = MEMORY;
insert into t1 (a1, a2, b, c, d) values
('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'),
('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'),
('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'),
('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'),
('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4'),
('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'),
('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'),
('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'),
('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'),
('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4');
create table t4 (
pk_col int auto_increment primary key, a1 char(64), a2 char(64), b char(16), c char(16) not null, d char(16), dummy char(64) default ' '
);
insert into t4 (a1, a2, b, c, d, dummy) select * from t1;
create index idx12672_0 on t4 (a1);
create index idx12672_1 on t4 (a1,a2,b,c);
create index idx12672_2 on t4 (a1,a2,b);
analyze table t4;
Table Op Msg_type Msg_text
test.t4 analyze status OK
select distinct a1 from t4 where pk_col not in (1,2,3,4);
a1
a
b
c
d
drop table t1,t4;
DROP TABLE IF EXISTS t2, t1;
CREATE TABLE t1 (i INT NOT NULL PRIMARY KEY) ENGINE= InnoDB;
CREATE TABLE t2 (
i INT NOT NULL,
FOREIGN KEY (i) REFERENCES t1 (i) ON DELETE NO ACTION
) ENGINE= InnoDB;
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1);
DELETE IGNORE FROM t1 WHERE i = 1;
Warnings:
Error 1451 Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`i`) REFERENCES `t1` (`i`) ON DELETE NO ACTION)
SELECT * FROM t1, t2;
i i
1 1
DROP TABLE t2, t1;
End of 4.1 tests.
create table t1 (
a varchar(30), b varchar(30), primary key(a), key(b)
);
select distinct a from t1;
a
drop table t1;
create table t1(a int, key(a));
insert into t1 values(1);
select a, count(a) from t1 group by a with rollup;
a count(a)
1 1
NULL 1
drop table t1;
create table t1 (f1 int, f2 char(1), primary key(f1,f2));
insert into t1 values ( 1,"e"),(2,"a"),( 3,"c"),(4,"d");
alter table t1 drop primary key, add primary key (f2, f1);
explain select distinct f1 a, f1 b from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 5 NULL 4 Using index; Using temporary
explain select distinct f1, f2 from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range NULL PRIMARY 5 NULL 3 Using index for group-by; Using temporary
drop table t1;
CREATE TABLE t1 (id int(11) NOT NULL PRIMARY KEY, name varchar(20),
INDEX (name));
CREATE TABLE t2 (id int(11) NOT NULL PRIMARY KEY, fkey int(11));
ALTER TABLE t2 ADD FOREIGN KEY (fkey) REFERENCES t2(id);
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%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index PRIMARY,name name 23 NULL 3 Using where; Using index
1 SIMPLE t2 ref fkey fkey 5 test.t1.id 1 Using where; Using index
EXPLAIN
SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
WHERE t1.name LIKE 'A%' OR FALSE;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL fkey 5 NULL 5 Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.fkey 1 Using where
DROP TABLE t1,t2;
CREATE TABLE t1 (
id int NOT NULL,
name varchar(20) NOT NULL,
dept varchar(20) NOT NULL,
age tinyint(3) unsigned NOT NULL,
PRIMARY KEY (id),
INDEX (name,dept)
) ENGINE=InnoDB;
INSERT INTO t1(id, dept, age, name) VALUES
(3987, 'cs1', 10, 'rs1'), (3988, 'cs2', 20, 'rs1'), (3995, 'cs3', 10, 'rs2'),
(3996, 'cs4', 20, 'rs2'), (4003, 'cs5', 10, 'rs3'), (4004, 'cs6', 20, 'rs3'),
(4011, 'cs7', 10, 'rs4'), (4012, 'cs8', 20, 'rs4'), (4019, 'cs9', 10, 'rs5'),
(4020, 'cs10', 20, 'rs5'),(4027, 'cs11', 10, 'rs6'),(4028, 'cs12', 20, 'rs6');
EXPLAIN SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range name name 44 NULL 2 Using where; Using index for group-by
SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
name dept
rs5 cs10
rs5 cs9
DELETE FROM t1;
# Masking (#) number in "rows" column of the following EXPLAIN output, as it may vary (bug#47746).
EXPLAIN SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range name name 44 NULL # Using where; Using index for group-by
SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
name dept
DROP TABLE t1;
drop table if exists t1;
show variables like 'innodb_rollback_on_timeout';
Variable_name Value
innodb_rollback_on_timeout OFF
create table t1 (a int unsigned not null primary key) engine = innodb;
insert into t1 values (1);
commit;
begin work;
insert into t1 values (2);
select * from t1;
a
1
2
begin work;
insert into t1 values (5);
select * from t1;
a
1
5
insert into t1 values (2);
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
select * from t1;
a
1
5
commit;
select * from t1;
a
1
2
commit;
select * from t1;
a
1
2
5
drop table t1;
set @save_qcache_size=@@global.query_cache_size;
set @save_qcache_type=@@global.query_cache_type;
set global query_cache_size=10*1024*1024;
set global query_cache_type=1;
drop table if exists `test`;
Warnings:
Note 1051 Unknown table 'test'
CREATE TABLE `test` (`test1` varchar(3) NOT NULL,
`test2` varchar(4) NOT NULL,PRIMARY KEY (`test1`))
ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO `test` (`test1`, `test2`) VALUES ('tes', '5678');
select * from test;
test1 test2
tes 5678
INSERT INTO `test` (`test1`, `test2`) VALUES ('tes', '1234')
ON DUPLICATE KEY UPDATE `test2` = '1234';
select * from test;
test1 test2
tes 1234
flush tables;
select * from test;
test1 test2
tes 1234
drop table test;
set global query_cache_type=@save_qcache_type;
set global query_cache_size=@save_qcache_size;
drop table if exists t1;
show variables like 'innodb_rollback_on_timeout';
Variable_name Value
innodb_rollback_on_timeout OFF
create table t1 (a int unsigned not null primary key) engine = innodb;
insert into t1 values (1);
commit;
begin work;
insert into t1 values (2);
select * from t1;
a
1
2
begin work;
insert into t1 values (5);
select * from t1;
a
1
5
insert into t1 values (2);
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
select * from t1;
a
1
5
commit;
select * from t1;
a
1
2
commit;
select * from t1;
a
1
2
5
drop table t1;
create table t1(
id int auto_increment,
c char(1) not null,
counter int not null default 1,
primary key (id),
unique key (c)
) engine=innodb;
insert into t1 (id, c) values
(NULL, 'a'),
(NULL, 'a')
on duplicate key update id = values(id), counter = counter + 1;
select * from t1;
id c counter
2 a 2
insert into t1 (id, c) values
(NULL, 'b')
on duplicate key update id = values(id), counter = counter + 1;
select * from t1;
id c counter
2 a 2
3 b 1
truncate table t1;
insert into t1 (id, c) values (NULL, 'a');
select * from t1;
id c counter
1 a 1
insert into t1 (id, c) values (NULL, 'b'), (NULL, 'b')
on duplicate key update id = values(id), c = values(c), counter = counter + 1;
select * from t1;
id c counter
1 a 1
3 b 2
insert into t1 (id, c) values (NULL, 'a')
on duplicate key update id = values(id), c = values(c), counter = counter + 1;
select * from t1;
id c counter
3 b 2
4 a 2
drop table t1;
CREATE TABLE t1(
id int AUTO_INCREMENT PRIMARY KEY,
stat_id int NOT NULL,
acct_id int DEFAULT NULL,
INDEX idx1 (stat_id, acct_id),
INDEX idx2 (acct_id)
) ENGINE=MyISAM;
CREATE TABLE t2(
id int AUTO_INCREMENT PRIMARY KEY,
stat_id int NOT NULL,
acct_id int DEFAULT NULL,
INDEX idx1 (stat_id, acct_id),
INDEX idx2 (acct_id)
) ENGINE=InnoDB;
INSERT INTO t1(stat_id,acct_id) VALUES
(1,759), (2,831), (3,785), (4,854), (1,921),
(1,553), (2,589), (3,743), (2,827), (2,545),
(4,779), (4,783), (1,597), (1,785), (4,832),
(1,741), (1,833), (3,788), (2,973), (1,907);
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
INSERT INTO t1(stat_id,acct_id) SELECT stat_id, mod(id+100000, acct_id) FROM t1;
UPDATE t1 SET acct_id=785
WHERE MOD(stat_id,2)=0 AND MOD(id,stat_id)=MOD(acct_id,stat_id);
OPTIMIZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 optimize status OK
SELECT COUNT(*) FROM t1;
COUNT(*)
40960
SELECT COUNT(*) FROM t1 WHERE acct_id=785;
COUNT(*)
8702
EXPLAIN SELECT COUNT(*) FROM t1 WHERE stat_id IN (1,3) AND acct_id=785;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx1,idx2 idx1 9 NULL 2 Using where; Using index
INSERT INTO t2 SELECT * FROM t1;
OPTIMIZE TABLE t2;
Table Op Msg_type Msg_text
test.t2 optimize note Table does not support optimize, doing recreate + analyze instead
test.t2 optimize status OK
EXPLAIN SELECT COUNT(*) FROM t2 WHERE stat_id IN (1,3) AND acct_id=785;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range idx1,idx2 idx1 9 NULL 2 Using where; Using index
DROP TABLE t1,t2;
create table t1(a int) engine=innodb;
alter table t1 comment '123';
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='123'
drop table t1;
CREATE TABLE t1 (a CHAR(2), KEY (a)) ENGINE = InnoDB DEFAULT CHARSET=UTF8;
INSERT INTO t1 VALUES ('uk'),('bg');
SELECT * FROM t1 WHERE a = 'uk';
a
uk
DELETE FROM t1 WHERE a = 'uk';
SELECT * FROM t1 WHERE a = 'uk';
a
UPDATE t1 SET a = 'us' WHERE a = 'uk';
SELECT * FROM t1 WHERE a = 'uk';
a
CREATE TABLE t2 (a CHAR(2), KEY (a)) ENGINE = InnoDB;
INSERT INTO t2 VALUES ('uk'),('bg');
SELECT * FROM t2 WHERE a = 'uk';
a
uk
DELETE FROM t2 WHERE a = 'uk';
SELECT * FROM t2 WHERE a = 'uk';
a
INSERT INTO t2 VALUES ('uk');
UPDATE t2 SET a = 'us' WHERE a = 'uk';
SELECT * FROM t2 WHERE a = 'uk';
a
CREATE TABLE t3 (a CHAR(2), KEY (a)) ENGINE = MyISAM;
INSERT INTO t3 VALUES ('uk'),('bg');
SELECT * FROM t3 WHERE a = 'uk';
a
uk
DELETE FROM t3 WHERE a = 'uk';
SELECT * FROM t3 WHERE a = 'uk';
a
INSERT INTO t3 VALUES ('uk');
UPDATE t3 SET a = 'us' WHERE a = 'uk';
SELECT * FROM t3 WHERE a = 'uk';
a
DROP TABLE t1,t2,t3;
create table t1 (a int) engine=innodb;
select * from bug29807;
ERROR 42S02: Table 'test.bug29807' doesn't exist
drop table t1;
drop table bug29807;
ERROR 42S02: Unknown table 'bug29807'
create table bug29807 (a int);
drop table bug29807;
CREATE TABLE t1 (a INT) ENGINE=InnoDB;
CREATE TABLE t2 (a INT) ENGINE=InnoDB;
switch to connection c1
SET AUTOCOMMIT=0;
INSERT INTO t2 VALUES (1);
switch to connection c2
SET AUTOCOMMIT=0;
LOCK TABLES t1 READ, t2 READ;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
switch to connection c1
COMMIT;
INSERT INTO t1 VALUES (1);
switch to connection default
SET AUTOCOMMIT=default;
DROP TABLE t1,t2;
CREATE TABLE t1 (
id int NOT NULL auto_increment PRIMARY KEY,
b int NOT NULL,
c datetime NOT NULL,
INDEX idx_b(b),
INDEX idx_c(c)
) ENGINE=InnoDB;
CREATE TABLE t2 (
b int NOT NULL auto_increment PRIMARY KEY,
c datetime NOT NULL
) ENGINE= MyISAM;
INSERT INTO t2(c) VALUES ('2007-01-01');
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t1(b,c) SELECT b,c FROM t2;
UPDATE t2 SET c='2007-01-02';
INSERT INTO t1(b,c) SELECT b,c FROM t2;
UPDATE t2 SET c='2007-01-03';
INSERT INTO t1(b,c) SELECT b,c FROM t2;
set @@sort_buffer_size=8192;
Warnings:
Warning 1292 Truncated incorrect sort_buffer_size value: '8192'
SELECT COUNT(*) FROM t1;
COUNT(*)
3072
EXPLAIN
SELECT COUNT(*) FROM t1
WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL idx_b,idx_c NULL NULL NULL # Using where
SELECT COUNT(*) FROM t1
WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
COUNT(*)
3072
EXPLAIN
SELECT COUNT(*) FROM t1 FORCE INDEX(idx_b, idx_c)
WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge idx_b,idx_c idx_c,idx_b 8,4 NULL # Using sort_union(idx_c,idx_b); Using where
SELECT COUNT(*) FROM t1 FORCE INDEX(idx_b, idx_c)
WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
COUNT(*)
3072
set @@sort_buffer_size=default;
DROP TABLE t1,t2;
CREATE TABLE t1 (a int, b int);
insert into t1 values (1,1),(1,2);
CREATE TABLE t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
drop table if exists t2;
Warnings:
Note 1051 Unknown table 't2'
CREATE TEMPORARY TABLE t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
drop table if exists t2;
Warnings:
Note 1051 Unknown table 't2'
CREATE TABLE t2 (a int, b int, primary key (a));
BEGIN;
INSERT INTO t2 values(100,100);
CREATE TABLE IF NOT EXISTS t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
100 100
ROLLBACK;
SELECT * from t2;
a b
100 100
TRUNCATE table t2;
INSERT INTO t2 select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
drop table t2;
CREATE TEMPORARY TABLE t2 (a int, b int, primary key (a));
BEGIN;
INSERT INTO t2 values(100,100);
CREATE TEMPORARY TABLE IF NOT EXISTS t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
100 100
COMMIT;
BEGIN;
INSERT INTO t2 values(101,101);
CREATE TEMPORARY TABLE IF NOT EXISTS t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
100 100
101 101
ROLLBACK;
SELECT * from t2;
a b
100 100
TRUNCATE table t2;
INSERT INTO t2 select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
drop table t1,t2;
create table t1(f1 varchar(800) binary not null, key(f1))
character set utf8 collate utf8_general_ci;
Warnings:
Warning 1071 Specified key was too long; max key length is 767 bytes
insert into t1 values('aaa');
drop table t1;
CREATE TABLE t1 (a INT PRIMARY KEY, b INT, c FLOAT, KEY b(b)) ENGINE = INNODB;
INSERT INTO t1 VALUES ( 1 , 1 , 1);
INSERT INTO t1 SELECT a + 1 , MOD(a + 1 , 20), 1 FROM t1;
INSERT INTO t1 SELECT a + 2 , MOD(a + 2 , 20), 1 FROM t1;
INSERT INTO t1 SELECT a + 4 , MOD(a + 4 , 20), 1 FROM t1;
INSERT INTO t1 SELECT a + 8 , MOD(a + 8 , 20), 1 FROM t1;
INSERT INTO t1 SELECT a + 16, MOD(a + 16, 20), 1 FROM t1;
INSERT INTO t1 SELECT a + 32, MOD(a + 32, 20), 1 FROM t1;
INSERT INTO t1 SELECT a + 64, MOD(a + 64, 20), 1 FROM t1;
EXPLAIN SELECT b, SUM(c) FROM t1 GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL b 5 NULL 128
EXPLAIN SELECT SQL_BIG_RESULT b, SUM(c) FROM t1 GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 128 Using filesort
DROP TABLE t1;
drop table if exists t1;
show variables like 'innodb_rollback_on_timeout';
Variable_name Value
innodb_rollback_on_timeout OFF
create table t1 (a int unsigned not null primary key) engine = innodb;
insert into t1 values (1);
commit;
begin work;
insert into t1 values (2);
select * from t1;
a
1
2
begin work;
insert into t1 values (5);
select * from t1;
a
1
5
insert into t1 values (2);
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
select * from t1;
a
1
5
commit;
select * from t1;
a
1
2
commit;
select * from t1;
a
1
2
5
drop table t1;
drop table if exists t1;
create table t1 (a int) engine=innodb;
alter table t1 alter a set default 1;
drop table t1;
Bug#24918 drop table and lock / inconsistent between
perm and temp tables
Check transactional tables under LOCK TABLES
drop table if exists t24918, t24918_tmp, t24918_trans, t24918_trans_tmp,
t24918_access;
create table t24918_access (id int);
create table t24918 (id int) engine=myisam;
create temporary table t24918_tmp (id int) engine=myisam;
create table t24918_trans (id int) engine=innodb;
create temporary table t24918_trans_tmp (id int) engine=innodb;
lock table t24918 write, t24918_tmp write, t24918_trans write, t24918_trans_tmp write;
drop table t24918;
select * from t24918_access;
ERROR HY000: Table 't24918_access' was not locked with LOCK TABLES
drop table t24918_trans;
select * from t24918_access;
ERROR HY000: Table 't24918_access' was not locked with LOCK TABLES
drop table t24918_trans_tmp;
select * from t24918_access;
ERROR HY000: Table 't24918_access' was not locked with LOCK TABLES
drop table t24918_tmp;
select * from t24918_access;
ERROR HY000: Table 't24918_access' was not locked with LOCK TABLES
unlock tables;
drop table t24918_access;
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a), KEY bkey (b)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,2),(3,2),(2,2),(4,2),(5,2),(6,2),(7,2),(8,2);
INSERT INTO t1 SELECT a + 8, 2 FROM t1;
INSERT INTO t1 SELECT a + 16, 1 FROM t1;
EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a;
id 1
select_type SIMPLE
table t1
type ref
possible_keys bkey
key bkey
key_len 5
ref const
rows 16
Extra Using where; Using index
SELECT * FROM t1 WHERE b=2 ORDER BY a;
a b
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
id 1
select_type SIMPLE
table t1
type range
possible_keys bkey
key bkey
key_len 5
ref NULL
rows 16
Extra Using where; Using index; Using filesort
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
a b
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
17 1
18 1
19 1
20 1
21 1
22 1
23 1
24 1
25 1
26 1
27 1
28 1
29 1
30 1
31 1
32 1
EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
id 1
select_type SIMPLE
table t1
type range
possible_keys bkey
key bkey
key_len 5
ref NULL
rows 16
Extra Using where; Using index
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
a b
17 1
18 1
19 1
20 1
21 1
22 1
23 1
24 1
25 1
26 1
27 1
28 1
29 1
30 1
31 1
32 1
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a), KEY bkey (b,c))
ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,1,1),(3,1,1),(2,1,1),(4,1,1);
INSERT INTO t2 SELECT a + 4, 1, 1 FROM t2;
INSERT INTO t2 SELECT a + 8, 1, 1 FROM t2;
EXPLAIN SELECT * FROM t2 WHERE b=1 ORDER BY a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 5
ref const
rows 8
Extra Using where; Using index; Using filesort
SELECT * FROM t2 WHERE b=1 ORDER BY a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
DROP TABLE t1,t2;
CREATE TABLE t1 (a INT, PRIMARY KEY (a)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8);
INSERT INTO t1 SELECT a + 8 FROM t1;
INSERT INTO t1 SELECT a + 16 FROM t1;
CREATE PROCEDURE p1 ()
BEGIN
DECLARE i INT DEFAULT 50;
DECLARE cnt INT;
START TRANSACTION;
ALTER TABLE t1 ENGINE=InnoDB;
COMMIT;
START TRANSACTION;
WHILE (i > 0) DO
SET i = i - 1;
SELECT COUNT(*) INTO cnt FROM t1 LOCK IN SHARE MODE;
END WHILE;
COMMIT;
END;|
CALL p1();
CALL p1();
CALL p1();
DROP PROCEDURE p1;
DROP TABLE t1;
create table t1(a text) engine=innodb default charset=utf8;
insert into t1 values('aaa');
alter table t1 add index(a(1024));
Warnings:
Warning 1071 Specified key was too long; max key length is 767 bytes
Warning 1071 Specified key was too long; max key length is 767 bytes
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` text,
KEY `a` (`a`(255))
) ENGINE=InnoDB DEFAULT CHARSET=utf8
drop table t1;
CREATE TABLE t1 (
a INT,
b INT,
KEY (b)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,10), (2,10), (2,20), (3,30);
START TRANSACTION;
SELECT * FROM t1 WHERE b=20 FOR UPDATE;
a b
2 20
START TRANSACTION;
SELECT * FROM t1 WHERE b=10 ORDER BY A FOR UPDATE;
a b
1 10
2 10
ROLLBACK;
ROLLBACK;
DROP TABLE t1;
CREATE TABLE t1(
a INT,
b INT NOT NULL,
c INT NOT NULL,
d INT,
UNIQUE KEY (c,b)
) engine=innodb;
INSERT INTO t1 VALUES (1,1,1,50), (1,2,3,40), (2,1,3,4);
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 GROUP BY c,b,d;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 ORDER BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 ORDER BY c,b,d;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL c 8 NULL 3
SELECT c,b,d FROM t1 GROUP BY c,b;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b FROM t1 GROUP BY c,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL c 8 NULL 3 Using index
SELECT c,b FROM t1 GROUP BY c,b;
c b
1 1
3 1
3 2
DROP TABLE t1;
CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a), INDEX b (b)) ENGINE=InnoDB;
INSERT INTO t1(a,b) VALUES (1,1), (2,2), (3,2);
EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a ASC;
id 1
select_type SIMPLE
table t1
type ref
possible_keys b
key b
key_len 5
ref const
rows 1
Extra Using where; Using index
SELECT * FROM t1 WHERE b=2 ORDER BY a ASC;
a b
2 2
3 2
EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a DESC;
id 1
select_type SIMPLE
table t1
type ref
possible_keys b
key b
key_len 5
ref const
rows 1
Extra Using where; Using index
SELECT * FROM t1 WHERE b=2 ORDER BY a DESC;
a b
3 2
2 2
EXPLAIN SELECT * FROM t1 ORDER BY b ASC, a ASC;
id 1
select_type SIMPLE
table t1
type index
possible_keys NULL
key b
key_len 5
ref NULL
rows 3
Extra Using index
SELECT * FROM t1 ORDER BY b ASC, a ASC;
a b
1 1
2 2
3 2
EXPLAIN SELECT * FROM t1 ORDER BY b DESC, a DESC;
id 1
select_type SIMPLE
table t1
type index
possible_keys NULL
key b
key_len 5
ref NULL
rows 3
Extra Using index
SELECT * FROM t1 ORDER BY b DESC, a DESC;
a b
3 2
2 2
1 1
EXPLAIN SELECT * FROM t1 ORDER BY b ASC, a DESC;
id 1
select_type SIMPLE
table t1
type index
possible_keys NULL
key b
key_len 5
ref NULL
rows 3
Extra Using index; Using filesort
SELECT * FROM t1 ORDER BY b ASC, a DESC;
a b
1 1
3 2
2 2
EXPLAIN SELECT * FROM t1 ORDER BY b DESC, a ASC;
id 1
select_type SIMPLE
table t1
type index
possible_keys NULL
key b
key_len 5
ref NULL
rows 3
Extra Using index; Using filesort
SELECT * FROM t1 ORDER BY b DESC, a ASC;
a b
2 2
3 2
1 1
DROP TABLE t1;
#
# Bug#27610: ALTER TABLE ROW_FORMAT=... does not rebuild the table.
#
# - prepare;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(c INT)
ENGINE = InnoDB
ROW_FORMAT = COMPACT;
# - initial check;
SELECT table_schema, table_name, row_format
FROM INFORMATION_SCHEMA.TABLES
WHERE table_schema = DATABASE() AND table_name = 't1';
table_schema table_name row_format
test t1 Compact
# - change ROW_FORMAT and check;
ALTER TABLE t1 ROW_FORMAT = REDUNDANT;
SELECT table_schema, table_name, row_format
FROM INFORMATION_SCHEMA.TABLES
WHERE table_schema = DATABASE() AND table_name = 't1';
table_schema table_name row_format
test t1 Redundant
# - that's it, cleanup.
DROP TABLE t1;
create table t1(a char(10) not null, unique key aa(a(1)),
b char(4) not null, unique key bb(b(4))) engine=innodb;
desc t1;
Field Type Null Key Default Extra
a char(10) NO UNI NULL
b char(4) NO PRI NULL
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(10) NOT NULL,
`b` char(4) NOT NULL,
UNIQUE KEY `bb` (`b`),
UNIQUE KEY `aa` (`a`(1))
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t1;
CREATE TABLE t1 (id int, type char(6), d int, INDEX idx(id,d)) ENGINE=InnoDB;
INSERT INTO t1 VALUES
(191, 'member', 1), (NULL, 'member', 3), (NULL, 'member', 4), (201, 'member', 2);
EXPLAIN SELECT * FROM t1 WHERE id=191 OR id IS NULL ORDER BY d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL idx NULL NULL NULL 4 Using where; Using filesort
SELECT * FROM t1 WHERE id=191 OR id IS NULL ORDER BY d;
id type d
191 member 1
NULL member 3
NULL member 4
DROP TABLE t1;
set @my_innodb_autoextend_increment=@@global.innodb_autoextend_increment;
set global innodb_autoextend_increment=8;
set global innodb_autoextend_increment=@my_innodb_autoextend_increment;
set @my_innodb_commit_concurrency=@@global.innodb_commit_concurrency;
set global innodb_commit_concurrency=0;
set global innodb_commit_concurrency=@my_innodb_commit_concurrency;
CREATE TABLE t1 (a int, b int, c int, PRIMARY KEY (a), KEY t1_b (b))
ENGINE=InnoDB;
INSERT INTO t1 (a,b,c) VALUES (1,1,1), (2,1,1), (3,1,1), (4,1,1);
INSERT INTO t1 (a,b,c) SELECT a+4,b,c FROM t1;
EXPLAIN SELECT a, b, c FROM t1 WHERE b = 1 ORDER BY a DESC LIMIT 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index t1_b PRIMARY 4 NULL 8 Using where
SELECT a, b, c FROM t1 WHERE b = 1 ORDER BY a DESC LIMIT 5;
a b c
8 1 1
7 1 1
6 1 1
5 1 1
4 1 1
DROP TABLE t1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a char(50)) ENGINE=InnoDB;
CREATE INDEX i1 on t1 (a(3));
SELECT * FROM t1 WHERE a = 'abcde';
a
DROP TABLE t1;
#
# BUG #26288: savepoint are not deleted on comit, if the transaction
# was otherwise empty
#
BEGIN;
SAVEPOINT s1;
COMMIT;
RELEASE SAVEPOINT s1;
ERROR 42000: SAVEPOINT s1 does not exist
BEGIN;
SAVEPOINT s2;
COMMIT;
ROLLBACK TO SAVEPOINT s2;
ERROR 42000: SAVEPOINT s2 does not exist
BEGIN;
SAVEPOINT s3;
ROLLBACK;
RELEASE SAVEPOINT s3;
ERROR 42000: SAVEPOINT s3 does not exist
BEGIN;
SAVEPOINT s4;
ROLLBACK;
ROLLBACK TO SAVEPOINT s4;
ERROR 42000: SAVEPOINT s4 does not exist
CREATE TABLE t1 (f1 INTEGER PRIMARY KEY COMMENT 'My ID#', f2 INTEGER DEFAULT NULL, f3 CHAR(10) DEFAULT 'My ID#', CONSTRAINT f2_ref FOREIGN KEY (f2) REFERENCES t1 (f1)) ENGINE=INNODB;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`f1` int(11) NOT NULL COMMENT 'My ID#',
`f2` int(11) DEFAULT NULL,
`f3` char(10) DEFAULT 'My ID#',
PRIMARY KEY (`f1`),
KEY `f2_ref` (`f2`),
CONSTRAINT `f2_ref` FOREIGN KEY (`f2`) REFERENCES `t1` (`f1`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
#
# Bug #36995: valgrind error in remove_const during subquery executions
#
create table t1 (a bit(1) not null,b int) engine=myisam;
create table t2 (c int) engine=innodb;
explain
select b from t1 where a not in (select b from t1,t2 group by a) group by a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 1
DROP TABLE t1,t2;
End of 5.0 tests
CREATE TABLE `t2` (
`k` int(11) NOT NULL auto_increment,
`a` int(11) default NULL,
`c` int(11) default NULL,
PRIMARY KEY (`k`),
UNIQUE KEY `idx_1` (`a`)
);
insert into t2 ( a ) values ( 6 ) on duplicate key update c =
ifnull( c,
0 ) + 1;
insert into t2 ( a ) values ( 7 ) on duplicate key update c =
ifnull( c,
0 ) + 1;
select last_insert_id();
last_insert_id()
2
select * from t2;
k a c
1 6 NULL
2 7 NULL
insert into t2 ( a ) values ( 6 ) on duplicate key update c =
ifnull( c,
0 ) + 1;
select last_insert_id();
last_insert_id()
2
select last_insert_id(0);
last_insert_id(0)
0
insert into t2 ( a ) values ( 6 ) on duplicate key update c =
ifnull( c,
0 ) + 1;
select last_insert_id();
last_insert_id()
0
select * from t2;
k a c
1 6 2
2 7 NULL
insert ignore into t2 values (null,6,1),(10,8,1);
select last_insert_id();
last_insert_id()
0
insert ignore into t2 values (null,6,1),(null,8,1),(null,15,1),(null,20,1);
select last_insert_id();
last_insert_id()
11
select * from t2;
k a c
1 6 2
2 7 NULL
10 8 1
11 15 1
12 20 1
insert into t2 ( a ) values ( 6 ) on duplicate key update c =
ifnull( c,
0 ) + 1, k=last_insert_id(k);
select last_insert_id();
last_insert_id()
1
select * from t2;
k a c
1 6 3
2 7 NULL
10 8 1
11 15 1
12 20 1
drop table t2;
drop table if exists t1, t2;
create table t1 (i int);
alter table t1 modify i int default 1;
alter table t1 modify i int default 2, rename t2;
lock table t2 write;
alter table t2 modify i int default 3;
unlock tables;
lock table t2 write;
alter table t2 modify i int default 4, rename t1;
unlock tables;
drop table t1;
drop table if exists t1;
create table t1 (i int);
insert into t1 values ();
lock table t1 write;
alter table t1 modify i int default 1;
insert into t1 values ();
select * from t1;
i
NULL
1
alter table t1 change i c char(10) default "Two";
insert into t1 values ();
select * from t1;
c
NULL
1
Two
unlock tables;
select * from t1;
c
NULL
1
Two
drop tables t1;
create table t1(f1 varchar(5) unique, f2 timestamp NOT NULL DEFAULT
CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP);
insert into t1(f1) values(1);
select @a:=f2 from t1;
@a:=f2
#
update t1 set f1=1;
select @b:=f2 from t1;
@b:=f2
#
select if(@a=@b,"ok","wrong");
if(@a=@b,"ok","wrong")
ok
insert into t1(f1) values (1) on duplicate key update f1="1";
select @b:=f2 from t1;
@b:=f2
#
select if(@a=@b,"ok","wrong");
if(@a=@b,"ok","wrong")
ok
insert into t1(f1) select f1 from t1 on duplicate key update f1="1";
select @b:=f2 from t1;
@b:=f2
#
select if(@a=@b,"ok","wrong");
if(@a=@b,"ok","wrong")
ok
drop table t1;
SET SESSION AUTOCOMMIT = 0;
SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;
set binlog_format=mixed;
# Switch to connection con1
CREATE TABLE t1 (a INT PRIMARY KEY, b VARCHAR(256))
ENGINE = InnoDB;
INSERT INTO t1 VALUES (1,2);
# 1. test for locking:
BEGIN;
UPDATE t1 SET b = 12 WHERE a = 1;
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
SELECT * FROM t1;
a b
1 12
# Switch to connection con2
UPDATE t1 SET b = 21 WHERE a = 1;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
# Switch to connection con1
SELECT * FROM t1;
a b
1 12
ROLLBACK;
# 2. test for serialized update:
CREATE TABLE t2 (a INT);
TRUNCATE t1;
INSERT INTO t1 VALUES (1,'init');
CREATE PROCEDURE p1()
BEGIN
UPDATE t1 SET b = CONCAT(b, '+con2') WHERE a = 1;
INSERT INTO t2 VALUES ();
END|
BEGIN;
UPDATE t1 SET b = CONCAT(b, '+con1') WHERE a = 1;
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
SELECT * FROM t1;
a b
1 init+con1
# Switch to connection con2
CALL p1;;
# Switch to connection con1
SELECT * FROM t1;
a b
1 init+con1
COMMIT;
SELECT * FROM t1;
a b
1 init+con1
# Switch to connection con2
SELECT * FROM t1;
a b
1 init+con1+con2
# Switch to connection con1
# 3. test for updated key column:
TRUNCATE t1;
TRUNCATE t2;
INSERT INTO t1 VALUES (1,'init');
BEGIN;
UPDATE t1 SET a = 2, b = CONCAT(b, '+con1') WHERE a = 1;
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
SELECT * FROM t1;
a b
2 init+con1
# Switch to connection con2
CALL p1;;
# Switch to connection con1
SELECT * FROM t1;
a b
2 init+con1
COMMIT;
SELECT * FROM t1;
a b
2 init+con1
# Switch to connection con2
SELECT * FROM t1;
a b
2 init+con1
DROP PROCEDURE p1;
DROP TABLE t1, t2;
CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL, PRIMARY KEY (a,b)) engine=innodb;
CREATE TABLE t2 (c INT NOT NULL, d INT NOT NULL, PRIMARY KEY (c,d),
CONSTRAINT c2 FOREIGN KEY f2 (c) REFERENCES t1 (a,b) ON UPDATE NO ACTION) engine=innodb;
ERROR 42000: Incorrect foreign key definition for 'f2': Key reference and table reference don't match
CREATE TABLE t2 (c INT NOT NULL, d INT NOT NULL, PRIMARY KEY (c,d),
CONSTRAINT c2 FOREIGN KEY (c) REFERENCES t1 (a,b) ON UPDATE NO ACTION) engine=innodb;
ERROR 42000: Incorrect foreign key definition for 'c2': Key reference and table reference don't match
CREATE TABLE t2 (c INT NOT NULL, d INT NOT NULL, PRIMARY KEY (c,d),
CONSTRAINT c1 FOREIGN KEY c2 (c) REFERENCES t1 (a) ON DELETE NO ACTION,
CONSTRAINT c2 FOREIGN KEY (c) REFERENCES t1 (a) ON UPDATE NO ACTION) engine=innodb;
ALTER TABLE t2 DROP FOREIGN KEY c2;
DROP TABLE t2;
CREATE TABLE t2 (c INT NOT NULL, d INT NOT NULL, PRIMARY KEY (c,d),
FOREIGN KEY (c) REFERENCES t1 (a,k) ON UPDATE NO ACTION) engine=innodb;
ERROR 42000: Incorrect foreign key definition for 'foreign key without name': Key reference and table reference don't match
CREATE TABLE t2 (c INT NOT NULL, d INT NOT NULL, PRIMARY KEY (c,d),
FOREIGN KEY f1 (c) REFERENCES t1 (a,k) ON UPDATE NO ACTION) engine=innodb;
ERROR 42000: Incorrect foreign key definition for 'f1': Key reference and table reference don't match
CREATE TABLE t2 (c INT NOT NULL, d INT NOT NULL, PRIMARY KEY (c,d),
CONSTRAINT c1 FOREIGN KEY f1 (c) REFERENCES t1 (a) ON DELETE NO ACTION,
CONSTRAINT c2 FOREIGN KEY (c) REFERENCES t1 (a) ON UPDATE NO ACTION,
FOREIGN KEY f3 (c) REFERENCES t1 (a) ON UPDATE NO ACTION,
FOREIGN KEY (c) REFERENCES t1 (a) ON UPDATE NO ACTION) engine=innodb;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`c` int(11) NOT NULL,
`d` int(11) NOT NULL,
PRIMARY KEY (`c`,`d`),
CONSTRAINT `c1` FOREIGN KEY (`c`) REFERENCES `t1` (`a`) ON DELETE NO ACTION,
CONSTRAINT `c2` FOREIGN KEY (`c`) REFERENCES `t1` (`a`) ON UPDATE NO ACTION,
CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`c`) REFERENCES `t1` (`a`) ON UPDATE NO ACTION,
CONSTRAINT `t2_ibfk_2` FOREIGN KEY (`c`) REFERENCES `t1` (`a`) ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t2;
DROP TABLE t1;
create table t1 (a int auto_increment primary key) engine=innodb;
alter table t1 order by a;
Warnings:
Warning 1105 ORDER BY ignored as there is a user-defined clustered index in the table 't1'
drop table t1;
CREATE TABLE t1
(vid integer NOT NULL,
tid integer NOT NULL,
idx integer NOT NULL,
name varchar(128) NOT NULL,
type varchar(128) NULL,
PRIMARY KEY(idx, vid, tid),
UNIQUE(vid, tid, name)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES
(1,1,1,'pk',NULL),(2,1,1,'pk',NULL),(3,1,1,'pk',NULL),(4,1,1,'c1',NULL),
(5,1,1,'pk',NULL),(1,1,2,'c1',NULL),(2,1,2,'c1',NULL),(3,1,2,'c1',NULL),
(4,1,2,'c2',NULL),(5,1,2,'c1',NULL),(2,1,3,'c2',NULL),(3,1,3,'c2',NULL),
(4,1,3,'pk',NULL),(5,1,3,'c2',NULL),
(2,1,4,'c_extra',NULL),(3,1,4,'c_extra',NULL);
EXPLAIN SELECT * FROM t1 FORCE INDEX (PRIMARY) WHERE tid = 1 AND vid = 3 ORDER BY idx DESC;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 12 NULL 16 Using where
SELECT * FROM t1 FORCE INDEX (PRIMARY) WHERE tid = 1 AND vid = 3 ORDER BY idx DESC;
vid tid idx name type
3 1 4 c_extra NULL
3 1 3 c2 NULL
3 1 2 c1 NULL
3 1 1 pk NULL
DROP TABLE t1;
#
# Bug #44290: explain crashes for subquery with distinct in
# SQL_SELECT::test_quick_select
# (reproduced only with InnoDB tables)
#
CREATE TABLE t1 (c1 INT, c2 INT, c3 INT, KEY (c3), KEY (c2, c3))
ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,1,1), (1,1,1), (1,1,2), (1,1,1), (1,1,2);
SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
1
1
EXPLAIN
SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 1
2 DERIVED t1 index c3,c2 c2 10 NULL 5
DROP TABLE t1;
CREATE TABLE t1 (c1 REAL, c2 REAL, c3 REAL, KEY (c3), KEY (c2, c3))
ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,1,1), (1,1,1), (1,1,2), (1,1,1), (1,1,2);
SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
1
1
EXPLAIN
SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 1
2 DERIVED t1 index c3,c2 c2 18 NULL 5
DROP TABLE t1;
CREATE TABLE t1 (c1 DECIMAL(12,2), c2 DECIMAL(12,2), c3 DECIMAL(12,2),
KEY (c3), KEY (c2, c3))
ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,1,1), (1,1,1), (1,1,2), (1,1,1), (1,1,2);
SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
1
1
EXPLAIN
SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 1
2 DERIVED t1 index c3,c2 c2 14 NULL 5
DROP TABLE t1;
End of 5.1 tests
drop table if exists t1, t2, t3;
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, pk int, key(a,b), primary key(pk)) engine=innodb;
insert into t2 select @a:=A.a+10*(B.a + 10*C.a),@a, @a from t1 A, t1 B, t1 C;
this must use key 'a', not PRIMARY:
explain select a from t2 where a=b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL a 10 NULL # Using where; Using index
drop table t1, t2;
SET SESSION BINLOG_FORMAT=STATEMENT;
SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;
select @@session.sql_log_bin, @@session.binlog_format, @@session.tx_isolation;
@@session.sql_log_bin 1
@@session.binlog_format STATEMENT
@@session.tx_isolation READ-COMMITTED
CREATE TABLE t1 ( a INT ) ENGINE=InnoDB;
INSERT INTO t1 VALUES(1);
DROP TABLE t1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a char(50)) ENGINE=InnoDB;
CREATE INDEX i1 on t1 (a(3));
SELECT * FROM t1 WHERE a = 'abcde';
a
DROP TABLE t1;
CREATE TABLE foo (a int, b int, c char(10),
PRIMARY KEY (c(3)),
KEY b (b)
) engine=innodb;
CREATE TABLE foo2 (a int, b int, c char(10),
PRIMARY KEY (c),
KEY b (b)
) engine=innodb;
CREATE TABLE bar (a int, b int, c char(10),
PRIMARY KEY (c(3)),
KEY b (b)
) engine=myisam;
INSERT INTO foo VALUES
(1,2,'abcdefghij'), (2,3,''), (3,4,'klmnopqrst'),
(4,5,'uvwxyz'), (5,6,'meotnsyglt'), (4,5,'asfdewe');
INSERT INTO bar SELECT * FROM foo;
INSERT INTO foo2 SELECT * FROM foo;
EXPLAIN SELECT c FROM bar WHERE b>2;;
id 1
select_type SIMPLE
table bar
type ALL
possible_keys b
key NULL
key_len NULL
ref NULL
rows 6
Extra Using where
EXPLAIN SELECT c FROM foo WHERE b>2;;
id 1
select_type SIMPLE
table foo
type ALL
possible_keys b
key NULL
key_len NULL
ref NULL
rows 6
Extra Using where
EXPLAIN SELECT c FROM foo2 WHERE b>2;;
id 1
select_type SIMPLE
table foo2
type range
possible_keys b
key b
key_len 5
ref NULL
rows 3
Extra Using where; Using index
EXPLAIN SELECT c FROM bar WHERE c>2;;
id 1
select_type SIMPLE
table bar
type ALL
possible_keys PRIMARY
key NULL
key_len NULL
ref NULL
rows 6
Extra Using where
EXPLAIN SELECT c FROM foo WHERE c>2;;
id 1
select_type SIMPLE
table foo
type ALL
possible_keys PRIMARY
key NULL
key_len NULL
ref NULL
rows 6
Extra Using where
EXPLAIN SELECT c FROM foo2 WHERE c>2;;
id 1
select_type SIMPLE
table foo2
type index
possible_keys PRIMARY
key b
key_len 5
ref NULL
rows 6
Extra Using where; Using index
DROP TABLE foo, bar, foo2;
DROP TABLE IF EXISTS t1,t3,t2;
DROP FUNCTION IF EXISTS f1;
CREATE FUNCTION f1() RETURNS VARCHAR(250)
BEGIN
return 'hhhhhhh' ;
END|
CREATE TABLE t1 (a VARCHAR(20), b VARCHAR(20), c VARCHAR(20)) ENGINE=INNODB;
BEGIN WORK;
CREATE TEMPORARY TABLE t2 (a VARCHAR(20), b VARCHAR(20), c varchar(20)) ENGINE=INNODB;
CREATE TEMPORARY TABLE t3 LIKE t2;
INSERT INTO t1 VALUES ('a','b',NULL),('c','d',NULL),('e','f',NULL);
SET @stmt := CONCAT('INSERT INTO t2 SELECT tbl.a, tbl.b, f1()',' FROM t1 tbl');
PREPARE stmt1 FROM @stmt;
SET @stmt := CONCAT('INSERT INTO t3', ' SELECT * FROM t2');
PREPARE stmt3 FROM @stmt;
EXECUTE stmt1;
COMMIT;
DEALLOCATE PREPARE stmt1;
DEALLOCATE PREPARE stmt3;
DROP TABLE t1,t3,t2;
DROP FUNCTION f1;
DROP TABLE IF EXISTS t1,t2;
CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB;
CREATE TABLE t2 (id INT PRIMARY KEY,
t1_id INT, INDEX par_ind (t1_id),
FOREIGN KEY (t1_id) REFERENCES t1(id)) ENGINE=INNODB;
INSERT INTO t1 VALUES (1),(2);
INSERT INTO t2 VALUES (3,2);
SET AUTOCOMMIT = 0;
START TRANSACTION;
TRUNCATE TABLE t1;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`t1_id`) REFERENCES `t1` (`id`))
SELECT * FROM t1;
id
1
2
COMMIT;
SELECT * FROM t1;
id
1
2
START TRANSACTION;
TRUNCATE TABLE t1;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`t1_id`) REFERENCES `t1` (`id`))
SELECT * FROM t1;
id
1
2
ROLLBACK;
SELECT * FROM t1;
id
1
2
SET AUTOCOMMIT = 1;
START TRANSACTION;
SELECT * FROM t1;
id
1
2
COMMIT;
TRUNCATE TABLE t1;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`t1_id`) REFERENCES `t1` (`id`))
SELECT * FROM t1;
id
1
2
DELETE FROM t2 WHERE id = 3;
START TRANSACTION;
SELECT * FROM t1;
id
1
2
TRUNCATE TABLE t1;
ROLLBACK;
SELECT * FROM t1;
id
TRUNCATE TABLE t2;
DROP TABLE t2;
DROP TABLE t1;
#
# Bug#40127 Multiple table DELETE IGNORE hangs on foreign key constraint violation on 5.0
#
CREATE TABLE t1 (
id INT UNSIGNED NOT NULL AUTO_INCREMENT,
PRIMARY KEY (id)
) ENGINE=InnoDB;
CREATE TABLE t2 (
id INT UNSIGNED NOT NULL AUTO_INCREMENT,
aid INT UNSIGNED NOT NULL,
PRIMARY KEY (id),
FOREIGN KEY (aid) REFERENCES t1 (id)
) ENGINE=InnoDB;
CREATE TABLE t3 (
bid INT UNSIGNED NOT NULL,
FOREIGN KEY (bid) REFERENCES t2 (id)
) ENGINE=InnoDB;
CREATE TABLE t4 (
a INT
) ENGINE=InnoDB;
CREATE TABLE t5 (
a INT
) ENGINE=InnoDB;
INSERT INTO t1 (id) VALUES (1);
INSERT INTO t2 (id, aid) VALUES (1, 1),(2,1),(3,1),(4,1);
INSERT INTO t3 (bid) VALUES (1);
INSERT INTO t4 VALUES (1),(2),(3),(4),(5);
INSERT INTO t5 VALUES (1);
DELETE t5 FROM t4 LEFT JOIN t5 ON t4.a= t5.a;
DELETE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t3`, CONSTRAINT `t3_ibfk_1` FOREIGN KEY (`bid`) REFERENCES `t2` (`id`))
DELETE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t3`, CONSTRAINT `t3_ibfk_1` FOREIGN KEY (`bid`) REFERENCES `t2` (`id`))
DELETE IGNORE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1;
DROP TABLE t3;
DROP TABLE t2;
DROP TABLE t1;
DROP TABLES t4,t5;
# Bug#40127 Multiple table DELETE IGNORE hangs on foreign key constraint violation on 5.0
# Testing for any side effects of IGNORE on AFTER DELETE triggers used with
# transactional tables.
#
CREATE TABLE t1 (i INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2 (a VARCHAR(100)) ENGINE=InnoDB;
CREATE TABLE t3 (i INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t4 (i INT NOT NULL PRIMARY KEY, t1i INT,
FOREIGN KEY (t1i) REFERENCES t1(i))
ENGINE=InnoDB;
CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW
BEGIN
SET @b:='EXECUTED TRIGGER';
INSERT INTO t2 VALUES (@b);
SET @a:= error_happens_here;
END||
SET @b:="";
SET @a:="";
INSERT INTO t1 VALUES (1),(2),(3),(4);
INSERT INTO t3 SELECT * FROM t1;
** An error in a trigger causes rollback of the statement.
DELETE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i;
ERROR 42S22: Unknown column 'error_happens_here' in 'field list'
SELECT @a,@b;
@a @b
EXECUTED TRIGGER
SELECT * FROM t2;
a
SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i;
i i
1 1
2 2
3 3
4 4
** Same happens with the IGNORE option
DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i;
ERROR 42S22: Unknown column 'error_happens_here' in 'field list'
SELECT * FROM t2;
a
SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i;
i i
1 1
2 2
3 3
4 4
**
** The following is an attempt to demonstrate
** error handling inside a row iteration.
**
DROP TRIGGER trg;
TRUNCATE TABLE t1;
TRUNCATE TABLE t2;
TRUNCATE TABLE t3;
INSERT INTO t1 VALUES (1),(2),(3),(4);
INSERT INTO t3 VALUES (1),(2),(3),(4);
INSERT INTO t4 VALUES (3,3),(4,4);
CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW
BEGIN
SET @b:= CONCAT('EXECUTED TRIGGER FOR ROW ',CAST(OLD.i AS CHAR));
INSERT INTO t2 VALUES (@b);
END||
** DELETE is prevented by foreign key constrains but errors are silenced.
** The AFTER trigger isn't fired.
DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i;
** Tables are modified by best effort:
SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i;
i i
3 3
4 4
** The AFTER trigger was only executed on successful rows:
SELECT * FROM t2;
a
EXECUTED TRIGGER FOR ROW 1
EXECUTED TRIGGER FOR ROW 2
DROP TRIGGER trg;
**
** Induce an error midway through an AFTER-trigger
**
TRUNCATE TABLE t4;
TRUNCATE TABLE t1;
TRUNCATE TABLE t3;
INSERT INTO t1 VALUES (1),(2),(3),(4);
INSERT INTO t3 VALUES (1),(2),(3),(4);
CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW
BEGIN
SET @a:= @a+1;
IF @a > 2 THEN
INSERT INTO t4 VALUES (5,5);
END IF;
END||
SET @a:=0;
** Errors in the trigger causes the statement to abort.
DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i;
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`t1i`) REFERENCES `t1` (`i`))
SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i;
i i
1 1
2 2
3 3
4 4
SELECT * FROM t4;
i t1i
DROP TRIGGER trg;
DROP TABLE t4;
DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;
CREATE TABLE t1 (a INT, b INT, KEY (a)) ENGINE = INNODB;
CREATE TABLE t2 (a INT KEY, b INT, KEY (b)) ENGINE = INNODB;
CREATE TABLE t3 (a INT, b INT KEY, KEY (a)) ENGINE = INNODB;
CREATE TABLE t4 (a INT KEY, b INT, KEY (b)) ENGINE = INNODB;
INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5), (6, 6);
INSERT INTO t2 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5);
INSERT INTO t3 VALUES (1, 101), (2, 102), (3, 103), (4, 104), (5, 105), (6, 106);
INSERT INTO t4 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5);
UPDATE t1, t2 SET t1.a = t1.a + 100, t2.b = t1.a + 10
WHERE t1.a BETWEEN 2 AND 4 AND t2.a = t1.b;
SELECT * FROM t2;
a b
1 1
2 12
3 13
4 14
5 5
UPDATE t3, t4 SET t3.a = t3.a + 100, t4.b = t3.a + 10
WHERE t3.a BETWEEN 2 AND 4 AND t4.a = t3.b - 100;
SELECT * FROM t4;
a b
1 1
2 12
3 13
4 14
5 5
DROP TABLE t1, t2, t3, t4;
#
# Bug#44886: SIGSEGV in test_if_skip_sort_order() -
# uninitialized variable used as subscript
#
CREATE TABLE t1 (a INT, b INT, c INT, d INT, PRIMARY KEY (b), KEY (a,c))
ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,1,1,0);
CREATE TABLE t2 (a INT, b INT, e INT, KEY (e)) ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,1,2);
CREATE TABLE t3 (a INT, b INT) ENGINE=MyISAM;
INSERT INTO t3 VALUES (1, 1);
SELECT * FROM t1, t2, t3
WHERE t1.a = t3.a AND (t1.b = t3.b OR t1.d) AND t2.b = t1.b AND t2.e = 2
GROUP BY t1.b;
a b c d a b e a b
1 1 1 0 1 1 2 1 1
DROP TABLE t1, t2, t3;
#
# Bug #45828: Optimizer won't use partial primary key if another
# index can prevent filesort
#
CREATE TABLE `t1` (
c1 int NOT NULL,
c2 int NOT NULL,
c3 int NOT NULL,
PRIMARY KEY (c1,c2),
KEY (c3)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES (5,2,1246276747);
INSERT INTO t1 VALUES (2,1,1246281721);
INSERT INTO t1 VALUES (7,3,1246281756);
INSERT INTO t1 VALUES (4,2,1246282139);
INSERT INTO t1 VALUES (3,1,1246282230);
INSERT INTO t1 VALUES (1,0,1246282712);
INSERT INTO t1 VALUES (8,3,1246282765);
INSERT INTO t1 SELECT c1+10,c2+10,c3+10 FROM t1;
INSERT INTO t1 SELECT c1+100,c2+100,c3+100 from t1;
INSERT INTO t1 SELECT c1+1000,c2+1000,c3+1000 from t1;
INSERT INTO t1 SELECT c1+10000,c2+10000,c3+10000 from t1;
INSERT INTO t1 SELECT c1+100000,c2+100000,c3+100000 from t1;
INSERT INTO t1 SELECT c1+1000000,c2+1000000,c3+1000000 from t1;
SELECT * FROM t1 WHERE c1 = 99999999 AND c3 > 1 ORDER BY c3;
c1 c2 c3
EXPLAIN SELECT * FROM t1 WHERE c1 = 99999999 AND c3 > 1 ORDER BY c3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref PRIMARY,c3 PRIMARY 4 const 1 Using where; Using filesort
EXPLAIN SELECT * FROM t1 FORCE INDEX (PRIMARY) WHERE c1 = 99999999 AND c3 > 1 ORDER BY c3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref PRIMARY PRIMARY 4 const 1 Using where; Using filesort
CREATE TABLE t2 (
c1 int NOT NULL,
c2 int NOT NULL,
c3 int NOT NULL,
KEY (c1,c2),
KEY (c3)
) ENGINE=InnoDB;
explain SELECT * FROM t2 WHERE c1 = 99999999 AND c3 > 1 ORDER BY c3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref c1,c3 c1 4 const 1 Using where; Using filesort
DROP TABLE t1,t2;
#
# 36259: Optimizing with ORDER BY
#
CREATE TABLE t1 (
a INT NOT NULL AUTO_INCREMENT,
b INT NOT NULL,
c INT NOT NULL,
d VARCHAR(5),
e INT NOT NULL,
PRIMARY KEY (a), KEY i2 (b,c,d)
) ENGINE=InnoDB;
INSERT INTO t1 (b,c,d,e) VALUES (1,1,'a',1), (2,2,'b',2);
INSERT INTO t1 (b,c,d,e) SELECT RAND()*10000, RAND()*10000, d, e FROM t1;
INSERT INTO t1 (b,c,d,e) SELECT RAND()*10000, RAND()*10000, d, e FROM t1;
INSERT INTO t1 (b,c,d,e) SELECT RAND()*10000, RAND()*10000, d, e FROM t1;
INSERT INTO t1 (b,c,d,e) SELECT RAND()*10000, RAND()*10000, d, e FROM t1;
INSERT INTO t1 (b,c,d,e) SELECT RAND()*10000, RAND()*10000, d, e FROM t1;
INSERT INTO t1 (b,c,d,e) SELECT RAND()*10000, RAND()*10000, d, e FROM t1;
EXPLAIN SELECT * FROM t1 WHERE b=1 AND c=1 ORDER BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i2 i2 8 const,const 1 Using where; Using filesort
EXPLAIN SELECT * FROM t1 FORCE INDEX(i2) WHERE b=1 and c=1 ORDER BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i2 i2 8 const,const 1 Using where; Using filesort
EXPLAIN SELECT * FROM t1 FORCE INDEX(PRIMARY) WHERE b=1 AND c=1 ORDER BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 128 Using where
DROP TABLE t1;
End of 5.1 tests
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