1 问题

删除有外键关联的数据或者表的时候，mysql出现报错：

Cannot delete or update a parent row: a foreign key constraint fails

2 解决方法

SET foreign_key_checks = 0;  // 先设置外键约束检查关闭drop table mytable;  // 删除数据，表或者视图SET foreign_key_checks = 1; // 开启外键约束检查，以保持表结构完整性

先关闭外键约束，执行删除操作，然后再开启外键约束

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解决Cannot delete or update a parent row: a foreign key constraint fails的mysql报错

1 问题

2 解决方法

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