sql-statement-rename-user.md

title	summary
RENAME USER	TiDB 数据库中 RENAME USER 的使用概况。

RENAME USER

RENAME USER 语句用于对已有用户进行重命名。

语法图

RenameUserStmt ::=
    'RENAME' 'USER' UserToUser ( ',' UserToUser )*

UserToUser ::=
    Username 'TO' Username

Username ::=
    StringName ('@' StringName | singleAtIdentifier)? | 'CURRENT_USER' OptionalBraces

示例

CREATE USER 'newuser' IDENTIFIED BY 'mypassword';

Query OK, 1 row affected (0.02 sec)

SHOW GRANTS FOR 'newuser';

+-------------------------------------+
| Grants for newuser@%                |
+-------------------------------------+
| GRANT USAGE ON *.* TO 'newuser'@'%' |
+-------------------------------------+
1 row in set (0.00 sec)

RENAME USER 'newuser' TO 'testuser';

Query OK, 0 rows affected (0.08 sec)

SHOW GRANTS FOR 'testuser';

+--------------------------------------+
| Grants for testuser@%                |
+--------------------------------------+
| GRANT USAGE ON *.* TO 'testuser'@'%' |
+--------------------------------------+
1 row in set (0.00 sec)

SHOW GRANTS FOR 'newuser';

ERROR 1141 (42000): There is no such grant defined for user 'newuser' on host '%'

MySQL 兼容性

RENAME USER 语句与 MySQL 完全兼容。如发现任何兼容性差异，请尝试 TiDB 支持资源。

另请参阅

• CREATE USER
• SHOW GRANTS
• DROP USER