Name
DROP OPERATOR CLASS -- remove an operator classSynopsis
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.
DROP OPERATOR CLASS
does not drop any of the operators or functions referenced by the class. If there are any indexes depending on the operator class, you will need to specify CASCADE
for the drop to complete.
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 (such as indexes), and in turn all objects that depend on those objects (see Section 5.13).
RESTRICT
-
Refuse to drop the operator class if any objects depend on it. This is the default.
Notes
DROP OPERATOR CLASS
will not drop the operator family containing the class, even if there is nothing else left in the family (in particular, in the case where the family was implicitly created by CREATE OPERATOR CLASS
). An empty operator family is harmless, but for the sake of tidiness you might wish to remove the family with DROP OPERATOR FAMILY
; or perhaps better, use DROP OPERATOR FAMILY
in the first place.
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.
Please login to continue.