Error Code: 1175. You are using safe update mode and you tried to update a table ....

mysql操作时报错
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.

这是因为MySql运行在safe-updates模式下，该模式会导致非主键条件下无法执行update或者delete命令，执行命令SET SQL_SAFE_UPDATES = 0;修改下数据库模式

解决办法

#查看开关状态
show variables like 'SQL_SAFE_UPDATES';
#修改数据库模式
SET SQL_SAFE_UPDATES = 0;

如果想修改回之前的安全等级

SET SQL_SAFE_UPDATES = 1;