怎么解決MySQL中ERROR 1054 (42S22)報錯問題

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添加用戶時報錯
mysql> grant all privileges on *.* to 'aaa'@'%' identified by 'aaa123';
ERROR 1054 (42S22): Unknown column 'plugin' in 'mysql.user'

升級mysql數據庫時，mysql.user表沒有升級，導致字段缺少，
通過一下方法修改mysql.user表
mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> ALTER TABLE user ADD Create_tablespace_priv ENUM('N','Y') NOT NULL DEFAULT 'N' AFTER Trigger_priv;
Query OK, 14 rows affected (0.08 sec)
Records: 14  Duplicates: 0  Warnings: 0

mysql> ALTER TABLE user ADD plugin CHAR(64) NULL AFTER max_user_connections;
Query OK, 14 rows affected (0.09 sec)
Records: 14  Duplicates: 0  Warnings: 0

mysql> ALTER TABLE user ADD authentication_string TEXT NULL DEFAULT NULL AFTER plugin;
Query OK, 14 rows affected (0.05 sec)
Records: 14  Duplicates: 0  Warnings: 0

mysql> ALTER TABLE user ADD password_expired ENUM('N','Y') NOT NULL DEFAULT 'N' AFTER authentication_string; 
Query OK, 14 rows affected (0.04 sec)
Records: 14  Duplicates: 0  Warnings: 0

mysql> grant all privileges on *.* to 'aaa'@'%' identified by 'aaa123';
Query OK, 0 rows affected (0.00 sec)

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