怎么解决MySQL中ERROR 1054 (42S22)报错问题

这篇文章主要介绍"怎么解决MySQL中ERROR 1054 (42S22)报错问题"，在日常操作中，相信很多人在怎么解决MySQL中ERROR 1054 (42S22)报错问题问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"怎么解决MySQL中ERROR 1054 (42S22)报错问题"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

添加用户时报错
mysql> grant all privileges on *.* to 'aaa'@'%' identified by 'aaa123';
ERROR 1054 (42S22): Unknown column 'plugin' in 'mysql.user'

升级mysql数据库时，mysql.user表没有升级，导致字段缺少，
通过一下方法修改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)

到此，关于"怎么解决MySQL中ERROR 1054 (42S22)报错问题"的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注网站，小编会继续努力为大家带来更多实用的文章！