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

1. 错误描写叙述
   11:14:39 delete from t_analy_yhd
   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.
   0.000 sec

2. 错误原因

3. 解决的方法