MYSQL ERROR 1217 (23000)
MYSQL ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails 删除表格时报错，此错误是MYSQL设置了FOREGIN KEY关联，导致无法删除或更新数据，以下为解决方法： 将foreign_key_checks设置关闭 set foreign_key_checks = 0
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