DROP OPERATOR CLASS
제목
DROP OPERATOR CLASS -- remove an operator class
요약
DROP OPERATOR CLASS [ IF EXISTS ] name USING index_method [ CASCADE | RESTRICT ]
Description
DROP OPERATOR CLASS drops an existing operator class.
To execute this command you must be the owner of the operator class.
Parameters
- IF EXISTS
Do not throw an error if the operator class does not exist. A notice is issued
in this case.
- name
The name (optionally schema-qualified) of an existing operator class.
- index_method
The name of the index access method the operator class is for.
- CASCADE
Automatically drop objects that depend on the operator class.
- RESTRICT
Refuse to drop the operator class if any objects depend on it.
This is the default.
Examples
Remove the B-tree operator class widget_ops:
DROP OPERATOR CLASS widget_ops USING btree;
This command will not succeed if there are any existing indexes
that use the operator class. Add CASCADE to drop
such indexes along with the operator class.
Compatibility
There is no DROP OPERATOR CLASS statement in the
SQL standard.