SHOW GRANTS
SHOW GRANTS 语句用于显示与用户关联的权限列表。与在 MySQL 中一样，USAGE 权限表示登录 TiDB 的能力。
语法图
- ShowGrantsStmt
- Username
- RolenameList
ShowGrantsStmt ::=
"SHOW" "GRANTS" ("FOR" Username ("USING" RolenameList)?)?
Username ::=
"CURRENT_USER" ( "(" ")" )?
| Username ("@" Hostname)?
RolenameList ::=
Rolename ("@" Hostname)? ("," Rolename ("@" Hostname)? )*
示例
SHOW GRANTS;
+-------------------------------------------+
| Grants for User |
+-------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' |
+-------------------------------------------+
1 row in set (0.00 sec)
SHOW GRANTS FOR 'u1';
ERROR 1141 (42000): There is no such grant defined for user 'u1' on host '%'
CREATE USER u1;
Query OK, 1 row affected (0.04 sec)
GRANT SELECT ON test.* TO u1;
Query OK, 0 rows affected (0.04 sec)
SHOW GRANTS FOR u1;
+------------------------------------+
| Grants for u1@% |
+------------------------------------+
| GRANT USAGE ON *.* TO 'u1'@'%' |
| GRANT Select ON test.* TO 'u1'@'%' |
+------------------------------------+
2 rows in set (0.00 sec)
MySQL 兼容性
SHOW GRANTS 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。