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set global innodb_file_per_table = 1;
drop table if exists b;
drop database if exists bug_fk;
create database bug_fk;
use bug_fk;
CREATE TABLE b (
b int unsigned NOT NULL,
d1 datetime NOT NULL,
PRIMARY KEY (b,d1)
) ENGINE=InnoDB;
CREATE TABLE c (
b int unsigned NOT NULL,
d1 datetime NOT NULL,
d2 datetime NOT NULL,
PRIMARY KEY (b,d1),
CONSTRAINT b_fk FOREIGN KEY (b) REFERENCES b (b)
) ENGINE=InnoDB;
show warnings;
Level Code Message
set foreign_key_checks = 0;
DROP TABLE IF EXISTS b;
show create table c;
Table Create Table
c CREATE TABLE `c` (
`b` int(10) unsigned NOT NULL,
`d1` datetime NOT NULL,
`d2` datetime NOT NULL,
PRIMARY KEY (`b`,`d1`),
CONSTRAINT `b_fk` FOREIGN KEY (`b`) REFERENCES `b` (`b`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
CREATE TABLE b (
b bigint unsigned NOT NULL,
d1 date NOT NULL,
PRIMARY KEY (b,d1)
) ENGINE=InnoDB;
ERROR HY000: Can't create table `bug_fk`.`b` (errno: 150 "Foreign key constraint is incorrectly formed")
show warnings;
Level Code Message
Error 1005 Can't create table `bug_fk`.`b` (errno: 150 "Foreign key constraint is incorrectly formed")
Warning 1215 Cannot add foreign key constraint for `b`
DROP TABLE IF EXISTS d;
Warnings:
Note 1051 Unknown table 'bug_fk.d'
CREATE TABLE d (
b bigint unsigned NOT NULL,
d1 date NOT NULL,
PRIMARY KEY (b,d1),
CONSTRAINT bd_fk FOREIGN KEY (b) REFERENCES b (b)
) ENGINE=InnoDB;
show warnings;
Level Code Message
set foreign_key_checks = 1;
show create table c;
Table Create Table
c CREATE TABLE `c` (
`b` int(10) unsigned NOT NULL,
`d1` datetime NOT NULL,
`d2` datetime NOT NULL,
PRIMARY KEY (`b`,`d1`),
CONSTRAINT `b_fk` FOREIGN KEY (`b`) REFERENCES `b` (`b`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
show create table d;
Table Create Table
d CREATE TABLE `d` (
`b` bigint(20) unsigned NOT NULL,
`d1` date NOT NULL,
PRIMARY KEY (`b`,`d1`),
CONSTRAINT `bd_fk` FOREIGN KEY (`b`) REFERENCES `b` (`b`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
CREATE TABLE b (
b bigint unsigned NOT NULL,
d1 date NOT NULL,
PRIMARY KEY (b,d1)
) ENGINE=InnoDB;
ERROR HY000: Can't create table `bug_fk`.`b` (errno: 150 "Foreign key constraint is incorrectly formed")
show warnings;
Level Code Message
Error 1005 Can't create table `bug_fk`.`b` (errno: 150 "Foreign key constraint is incorrectly formed")
Warning 1215 Cannot add foreign key constraint for `b`
set foreign_key_checks=0;
drop table c;
drop table d;
create table b(id int) engine=innodb;
show warnings;
Level Code Message
b.frm
b.ibd
drop table if exists b;
drop database if exists bug_fk;
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