111 lines
1.9 KiB
Markdown
111 lines
1.9 KiB
Markdown
RENAME USER
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描述
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-----------
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该语句用于修改 OceanBase 登录用户的用户名。
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**说明**
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必须拥有全局 CREATE USER 权限，才可以使用本命令。
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格式
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```javascript
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RENAME USER
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'oldusername' TO 'newusername'
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[,'oldusername' TO 'newusername'...];
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```
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参数解释
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-------------
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| **参数** | **描述** |
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|--------------------------------|-----------------------------------------------------------|
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| oldusername | 旧用户名。 |
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| newusername | 新用户名。用户名的占用字节小于或等于16。 |
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| 'oldusername' TO 'newusername' | 修改用户名。同时修改多个用户名时，用","隔开。 修改前后，新旧用户权限保持一致。 |
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示例
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1. 修改前，执行以下命令，查看用户。
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```javascript
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SELECT user FROM mysql.user;
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```
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结果如下所示。
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```javascript
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mysql> SELECT user FROM mysql.user;
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+-----------+
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| user |
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+-----------+
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| root |
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| admin |
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| sqluser01 |
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| sqluser02 |
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+-----------+
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4 rows in set (0.00 sec)
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```
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2. 执行以下命令，将 sqluser01 用户的用户名修改为 obsqluser01。
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```javascript
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RENAME USER 'sqluser01' TO 'obsqluser01';
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```
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3. 修改后，执行以下命令，查看用户。
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```javascript
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SELECT user FROM mysql.user;
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```
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结果如下所示。 sqluser01 用户的用户名被修改为 obsqluser01。
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```javascript
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mysql> RENAME USER 'sqluser01' TO 'obsqluser01';
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Query OK, 0 rows affected (0.04 sec)
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mysql> SELECT user FROM mysql.user;
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+-------------+
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| user |
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+-------------+
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| root |
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| admin |
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| obsqluser01 |
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| sqluser02 |
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+-------------+
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4 rows in set (0.00 sec)
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```
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