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8 lines
289 B
SQL
8 lines
289 B
SQL
CREATE TABLE `dupe_key` (
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`a` int(11) default NULL,
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`b` int(11) default NULL,
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KEY `a` (`a`),
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CONSTRAINT `t1_ibfk_1` FOREIGN KEY (`a`, `b`) REFERENCES `t2` (`a`, `b`),
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CONSTRAINT `t1_ibfk_2` FOREIGN KEY (`b`, `a`) REFERENCES `t2` (`b`, `a`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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