title | summary |
---|---|
CREATE ROLE |
TiDB 数据库中 CREATE ROLE 的使用概况。 |
CREATE ROLE
语句是基于角色的访问控制 (RBAC) 操作的一部分,用于创建新角色并将新角色分配给用户。
CreateRoleStmt ::=
'CREATE' 'ROLE' IfNotExists RoleSpec (',' RoleSpec)*
IfNotExists ::=
('IF' 'NOT' 'EXISTS')?
RoleSpec ::=
Rolename
以 root
用户连接 TiDB:
mysql -h 127.0.0.1 -P 4000 -u root
创建新角色 analyticsteam
和新用户 jennifer
:
CREATE ROLE analyticsteam;
Query OK, 0 rows affected (0.02 sec)
GRANT SELECT ON test.* TO analyticsteam;
Query OK, 0 rows affected (0.02 sec)
CREATE USER jennifer;
Query OK, 0 rows affected (0.01 sec)
GRANT analyticsteam TO jennifer;
Query OK, 0 rows affected (0.01 sec)
以 jennifer
用户连接 TiDB:
mysql -h 127.0.0.1 -P 4000 -u jennifer
需要注意的是,默认情况下,用户 jennifer
需要执行 SET ROLE analyticsteam
语句才能使用与 analyticsteam
角色相关联的权限:
SHOW GRANTS;
+---------------------------------------------+
| Grants for User |
+---------------------------------------------+
| GRANT USAGE ON *.* TO 'jennifer'@'%' |
| GRANT 'analyticsteam'@'%' TO 'jennifer'@'%' |
+---------------------------------------------+
2 rows in set (0.00 sec)
SHOW TABLES in test;
ERROR 1044 (42000): Access denied for user 'jennifer'@'%' to database 'test'
SET ROLE analyticsteam;
Query OK, 0 rows affected (0.00 sec)
SHOW GRANTS;
+---------------------------------------------+
| Grants for User |
+---------------------------------------------+
| GRANT USAGE ON *.* TO 'jennifer'@'%' |
| GRANT SELECT ON test.* TO 'jennifer'@'%' |
| GRANT 'analyticsteam'@'%' TO 'jennifer'@'%' |
+---------------------------------------------+
3 rows in set (0.00 sec)
SHOW TABLES IN test;
+----------------+
| Tables_in_test |
+----------------+
| t1 |
+----------------+
1 row in set (0.00 sec)
以 root
用户连接 TiDB:
mysql -h 127.0.0.1 -P 4000 -u root
执行 SET DEFAULT ROLE
语句将用户 jennifer
与 analyticsteam
角色相关联:
SET DEFAULT ROLE analyticsteam TO jennifer;
Query OK, 0 rows affected (0.02 sec)
以 jennifer
用户连接 TiDB:
mysql -h 127.0.0.1 -P 4000 -u jennifer
此时 jennifer
用户无需执行 SET ROLE
语句就能拥有 analyticsteam
角色相关联的权限:
SHOW GRANTS;
+---------------------------------------------+
| Grants for User |
+---------------------------------------------+
| GRANT USAGE ON *.* TO 'jennifer'@'%' |
| GRANT SELECT ON test.* TO 'jennifer'@'%' |
| GRANT 'analyticsteam'@'%' TO 'jennifer'@'%' |
+---------------------------------------------+
3 rows in set (0.00 sec)
SHOW TABLES IN test;
+----------------+
| Tables_in_test |
+----------------+
| t1 |
+----------------+
1 row in set (0.00 sec)
CREATE ROLE
语句与 MySQL 8.0 的“角色”功能完全兼容。如发现任何兼容性差异,请在 GitHub 上提交 issue。