MySQL Workbench报错“You are using safe update mode and you tried to update a table without a WHERE ”

MySQL Workbench下执行update/delete命令时报错：
Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column. To disable safe mode, toggle the option in Preferences -> SQL Editor and reconnect.

解决办法：
Eidt – Preferences - SQL Editor – “Safe updates…”取消勾选

完毕。