DROP RESOURCE GROUP
DROP RESOURCE GROUP 语句用于在当前所选数据库中删除资源组。
语法图
- DropResourceGroupStmt
- IfExists
- ResourceGroupName
DropResourceGroupStmt ::=
"DROP" "RESOURCE" "GROUP" IfExists ResourceGroupName
IfExists ::=
('IF' 'EXISTS')?
ResourceGroupName ::=
Identifier
| "DEFAULT"
示例
删除名为 rg1 的资源组：
DROP RESOURCE GROUP IF EXISTS rg1;
Query OK, 0 rows affected (0.22 sec)
CREATE RESOURCE GROUP IF NOT EXISTS rg1 RU_PER_SEC = 500 BURSTABLE;
Query OK, 0 rows affected (0.08 sec)
SELECT * FROM information_schema.resource_groups WHERE NAME ='rg1';
+------+------------+----------+-----------+-------------+
| NAME | RU_PER_SEC | PRIORITY | BURSTABLE | QUERY_LIMIT |
+------+------------+----------+-----------+-------------+
| rg1 | 500 | MEDIUM | YES | NULL |
+------+------------+----------+-----------+-------------+
1 row in set (0.01 sec)
DROP RESOURCE GROUP IF EXISTS rg1;
Query OK, 1 rows affected (0.09 sec)
SELECT * FROM information_schema.resource_groups WHERE NAME ='rg1';
Empty set (0.00 sec)
MySQL 兼容性
MySQL 也支持 DROP RESOURCE GROUP，但 TiDB 不支持 FORCE 参数。