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#
# Bug #18806829 OPENING INNODB TABLES WITH MANY FOREIGN KEY
# REFERENCES IS SLOW/CRASHES SEMAPHORE
#
create table t1 (f1 int primary key) engine=innodb;
insert into t1 values (5);
insert into t1 values (2882);
insert into t1 values (10);
update t1 set f1 = 28 where f1 = 2882;
select * from fk_120;
f1
5
10
28
select * from fk_1;
f1
5
10
28
select * from fk_50;
f1
5
10
28
drop table t1;
#
# Check if restrict is working fine.
#
create table t1 (f1 int primary key) engine=innodb;
delete from t1 where f1 = 29;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`fk_29`, CONSTRAINT `pc29` FOREIGN KEY (`f1`) REFERENCES `t1` (`f1`))
select * from fk_29;
f1
29
drop table t1;
CREATE TABLE t1 (
id int(11) NOT NULL AUTO_INCREMENT,
f1 int(11) DEFAULT NULL,
PRIMARY KEY (id),
CONSTRAINT fk1 FOREIGN KEY (f1) REFERENCES t1 (id) ON DELETE CASCADE
) ENGINE=InnoDB;
CREATE TABLE t2 (
id int(11) NOT NULL AUTO_INCREMENT,
f2 int(11) NOT NULL,
f3 int(11) NOT NULL,
PRIMARY KEY (`id`),
CONSTRAINT fk2 FOREIGN KEY (f2) REFERENCES t1 (`id`) ON DELETE CASCADE,
CONSTRAINT fk3 FOREIGN KEY (f3) REFERENCES t3 (id) ON DELETE CASCADE
) ENGINE=InnoDB;
ERROR HY000: Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
show warnings;
Level Code Message
Warning 150 Create table `test`.`t2` with foreign key constraint failed. Referenced table `test`.`t3` not found in the data dictionary near ' FOREIGN KEY (f3) REFERENCES t3 (id) ON DELETE CASCADE
) ENGINE=InnoDB'.
Error 1005 Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
Warning 1215 Cannot add foreign key constraint
CREATE TABLE t2 (
id int(11) NOT NULL AUTO_INCREMENT,
f2 int(11) NOT NULL,
f3 int(11) NOT NULL,
PRIMARY KEY (`id`),
CONSTRAINT fk2 FOREIGN KEY (f2) REFERENCES t1 (`id`) ON DELETE CASCADE
) ENGINE=InnoDB;
ALTER TABLE t2 ADD CONSTRAINT fk3 FOREIGN KEY (f3) REFERENCES t3 (id) ON DELETE CASCADE;
ERROR HY000: Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
show warnings;
Level Code Message
Warning 150 Alter table `test`.`t2` with foreign key constraint failed. Referenced table `test`.`t3` not found in the data dictionary near ' FOREIGN KEY (f3) REFERENCES t3 (id) ON DELETE CASCADE'.
Error 1005 Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
Warning 1215 Cannot add foreign key constraint
drop table t2;
drop table t1;
CREATE TABLE `#departaments` (
`id_depart` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`id_depart`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
CREATE TABLE `#departaments_tree` (
`id_depart` INT(10) UNSIGNED NOT NULL,
`id_depart_in` INT(10) UNSIGNED NOT NULL,
PRIMARY KEY (`id_depart`,`id_depart_in`),
CONSTRAINT `#departaments_tree_ibfk_1` FOREIGN KEY (`id_depart`) REFERENCES `#departaments` (`id_depart`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
ALTER TABLE `#departaments_tree`
ADD FOREIGN KEY (`id_depart_in`) REFERENCES `#departaments`(`id_depart`);
SHOW CREATE TABLE `#departaments_tree`;
Table Create Table
#departaments_tree CREATE TABLE `#departaments_tree` (
`id_depart` int(10) unsigned NOT NULL,
`id_depart_in` int(10) unsigned NOT NULL,
PRIMARY KEY (`id_depart`,`id_depart_in`),
KEY `id_depart_in` (`id_depart_in`),
CONSTRAINT `#departaments_tree_ibfk_1` FOREIGN KEY (`id_depart`) REFERENCES `#departaments` (`id_depart`),
CONSTRAINT `#departaments_tree_ibfk_2` FOREIGN KEY (`id_depart_in`) REFERENCES `#departaments` (`id_depart`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
DROP TABLE `#departaments_tree`;
DROP TABLE `#departaments`;
CREATE TABLE `boroda` (
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`a` INT(11) UNSIGNED DEFAULT NULL,
`b` INT(11) UNSIGNED DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `a` (`a`),
CONSTRAINT `boroda_ibfk_1` FOREIGN KEY (`a`) REFERENCES `boroda` (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
ALTER TABLE `boroda`
ADD FOREIGN KEY (`b`) REFERENCES `boroda`(`id`);
ALTER TABLE `boroda` DROP FOREIGN KEY `boroda_ibfk_2`;
RENAME TABLE `boroda` TO `#boroda`;
ALTER TABLE `#boroda`
ADD FOREIGN KEY (`b`) REFERENCES `#boroda`(`id`);
SHOW CREATE TABLE `#boroda`;
Table Create Table
#boroda CREATE TABLE `#boroda` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`a` int(11) unsigned DEFAULT NULL,
`b` int(11) unsigned DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `a` (`a`),
KEY `b` (`b`),
CONSTRAINT `#boroda_ibfk_1` FOREIGN KEY (`a`) REFERENCES `#boroda` (`id`),
CONSTRAINT `#boroda_ibfk_2` FOREIGN KEY (`b`) REFERENCES `#boroda` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
DROP TABLE `#boroda`;
CREATE TABLE `boroda` (
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`a` INT(11) UNSIGNED DEFAULT NULL,
`b` INT(11) UNSIGNED DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `a` (`a`),
CONSTRAINT `boroda_ibfk_1` FOREIGN KEY (`a`) REFERENCES `boroda` (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
RENAME TABLE `boroda` TO `bor#oda`;
ALTER TABLE `bor#oda`
ADD FOREIGN KEY (`b`) REFERENCES `bor#oda`(`id`);
SHOW CREATE TABLE `bor#oda`;
Table Create Table
bor#oda CREATE TABLE `bor#oda` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`a` int(11) unsigned DEFAULT NULL,
`b` int(11) unsigned DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `a` (`a`),
KEY `b` (`b`),
CONSTRAINT `bor#oda_ibfk_1` FOREIGN KEY (`a`) REFERENCES `bor#oda` (`id`),
CONSTRAINT `bor#oda_ibfk_2` FOREIGN KEY (`b`) REFERENCES `bor#oda` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
DROP TABLE `bor#oda`;
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