如果是这样 - 此表中必须更改什么?
CREATE TABLE contestants
(
idContestants int(10) unsigned NOT NULL AUTO_INCREMENT,
idEvent int(10) unsigned NOT NULL,
ContestantName varchar(50) DEFAULT NULL,
PRIMARY KEY (idContestants),
UNIQUE KEY Index_UniqueName (idEvent,ContestantName),
)
ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1;