Cannot add or update a child row: a foreign key constraint fails 解决办法
2016-12-28 13:34
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原因：
设置的外键和对应的另一个表的主键值不匹配。
解决方法：
找出不匹配的值修改。
或者清空两表数据。
设置的外键和对应的另一个表的主键值不匹配。
解决方法：
找出不匹配的值修改。
或者清空两表数据。
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