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我有以下查询:错误添加外键约束
ALTER TABLE ROUTE ADD FOREIGN KEY (RID) REFERENCES RESERVATION(RID) ON DELETE CASCADE
,但它产生了我一个错误:
#1452 - Cannot add or update a child row: a foreign key constraint fails (`SmarTrek`.`#sql-91e_d09`, CONSTRAINT `FK_RID` FOREIGN KEY (`RID`) REFERENCES `RESERVATION` (`RID`) ON DELETE CASCADE)
在设计模式,这里是什么样子:
谢谢,这解决了我的问题 – aherlambang 2011-04-01 05:23:15