在 MySQL 中重命名 Root @localhost 用户名?
mysqlmysqli database
重命名 Root @localhost 的语法如下
UPDATE MySQL.user SET user = ‘yourNewRootName’ WHERE user = 'root';
为了理解上述概念，让我们检查所有用户名和主机。查询如下
mysql> select user,host from MySQL.user;
以下是输出 −
+------------------+-----------+ | user | host | +------------------+-----------+ | Bob | % | | Manish | % | | User2 | % | | mysql.infoschema | % | | mysql.session | % | | mysql.sys | % | | root | % | | @UserName@ | localhost | | Adam Smith | localhost | | John | localhost | | John Doe | localhost | | User1 | localhost | | am | localhost | | hbstudent | localhost | | mysql.infoschema | localhost | | mysql.session | localhost | +------------------+-----------+ 16 rows in set (0.00 sec)
以下查询将用户 ‘root’ 重命名为其他名称
mysql> UPDATE mysql.user set user = 'MyRoot' where user = 'root'; Query OK, 1 row affected (0.13 sec) Rows matched: 1 Changed: 1 Warnings: 0
让我们检查用户 ‘root’ 是否已更新为新名称 ‘MyRoot’。查询如下
mysql> select user,host from MySQL.user;
以下是输出 −
+------------------+-----------+ | user | host | +------------------+-----------+ | Bob | % | | Manish | % | | MyRoot | % | | User2 | % | | mysql.infoschema | % | | mysql.session | % | | mysql.sys | % | | @UserName@ | localhost | | Adam Smith | localhost | | John | localhost | | John Doe | localhost | | User1 | localhost | | am | localhost | | hbstudent | localhost | | mysql.infoschema | localhost | | mysql.session | localhost | +------------------+-----------+ 16 rows in set (0.00 sec)
查看示例输出，根已成功更新为新名称"MyRoot"。
