MySql導入.sql文件時外鍵報錯,a foreign key constraint fails,Cannot add foreign key constraint

                              MySql導入.sql文件時外鍵報錯 通過Navicat for MySQL或者SQLyog等數據庫操作工具導出.sql文件時,會發現再次導入的時候會報錯: Error Code: 1217 - Cannot delete or update a parent row: a foreign key constraint fails Err
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