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MDEV-10421 duplicate CHECK CONSTRAINTs.

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mysql_prepare_create_table fixed so it doesn't let duplicating
        constraint names. Syntax for CONSTRAINT IF NOT EXISTS added
        and handled in mysql_alter_table.
This commit is contained in:
Alexey Botchkov
2016-09-06 14:42:33 +04:00
parent 00dfe27f7c
commit 225440047d
10 changed files with 107 additions and 8 deletions
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23
mysql-test/r/alter_table.result
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@ -2057,3 +2057,26 @@ t1 CREATE TABLE `t1` (
KEY `i1` (`a`) COMMENT 'comment2'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
#
# MDEV-10421 duplicate CHECK CONSTRAINTs
#
CREATE TABLE t1 (a INT, b INT) engine=myisam;
ALTER TABLE t1 ADD CONSTRAINT IF NOT EXISTS `min` CHECK (a+b > 100);
ALTER TABLE t1 ADD CONSTRAINT `min` CHECK (a+b > 100);
ERROR HY000: Duplicate CHECK constraint name 'min'
ALTER TABLE t1 ADD CONSTRAINT IF NOT EXISTS `min` CHECK (a+b > 100);
Warnings:
Note 1826 Duplicate CHECK constraint name 'min'
ALTER TABLE t1 ADD CONSTRAINT `mini` CHECK (a+b > 100);
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
`b` int(11) DEFAULT NULL,
CONSTRAINT `min` CHECK (a+b > 100),
CONSTRAINT `mini` CHECK (a+b > 100)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1(a INT, b INT, CONSTRAINT min check (a>5),
CONSTRAINT min check (b>5));
ERROR HY000: Duplicate CHECK constraint name 'min'