sql-statement-drop-resource-group.md

title	summary
DROP RESOURCE GROUP	Learn the usage of DROP RESOURCE GROUP in TiDB.

DROP RESOURCE GROUP

Note:

This feature is not available on Serverless Tier clusters.

You can use the DROP RESOURCE GROUP statement to drop a resource group.

Synopsis

DropResourceGroupStmt:
    "DROP" "RESOURCE" "GROUP" IfExists ResourceGroupName

IfExists ::=
    ('IF' 'EXISTS')?

ResourceGroupName:
    Identifier

Note:

The DROP RESOURCE GROUP statement can only be executed when the global variable tidb_enable_resource_control is set to ON.

Examples

Drop a resource group named rg1.

mysql> DROP RESOURCE GROUP IF EXISTS rg1;
Query OK, 0 rows affected (0.22 sec)
mysql> CREATE RESOURCE GROUP IF NOT EXISTS rg1 RU_PER_SEC = 500 BURSTABLE;
Query OK, 0 rows affected (0.08 sec)
mysql> SELECT * FROM information_schema.resource_groups WHERE NAME ='rg1';
+------+------------+-----------+
| NAME | RU_PER_SEC | BURSTABLE |
+------+------------+-----------+
| rg1  |        500 | YES       |
+------+------------+-----------+
1 row in set (0.01 sec)

mysql> DROP RESOURCE GROUP IF EXISTS rg1;
Query OK, 1 rows affected (0.09 sec)

mysql> SELECT * FROM information_schema.resource_groups WHERE NAME ='rg1';
Empty set (0.00 sec)

MySQL compatibility

MySQL also supports DROP RESOURCE GROUP, but TiDB does not support the FORCE parameter.

See also

• ALTER RESOURCE GROUP
• CREATE RESOURCE GROUP
• Request Unit (RU)