MySQL unknown column 'password_last_changed'
问题 When creating a user using this command: create user 'foo'@localhost'; this error is shown: ERROR 1054 (42S22): Unknown column 'password_last_changed' in 'mysql.user' Using MySQL server version: 5.7.6 I tried to add it but I don't know its data-type How can I fix this? 回答1: Apparently you upgraded your MySQL to 5.7 from an earlier version. Column ' password_last_changed ' used to exist in MySQL <5.7, but was removed since 5.7 If this is the case, you have to run ' mysql_upgrade ' script to