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
注意
DROP RESOURCE GROUP语句只能在全局变量tidb_enable_resource_control设置为ON时才能执行。default资源组为系统保留的资源组，不支持删除。
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。