1、在workbench中，update，delete某个表的时候有错误提示“Error Code: 1175. You are usin爿讥旌护g safe update mode and you tried to update a table without a WHERE that uses a KEY column. ”，如图所示
3、在弹出的子菜单中点击“Preference...”,如图所示
5、然后在右边的界面中，找到一个选项“Safe Updates(rejects UPDATEs and DELETEs with no restrictions)”，胃申赜驵取消勾选并点击“ok”按钮，重新连接数据库，尝试Update，delete操作
