|The PostgreSQL 9.0 Reference Manual - Volume 1B - SQL Command Reference
by The PostgreSQL Global Development Group
Paperback (6"x9"), 488 pages
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1.87 DROP OPERATOR CLASS
DROP OPERATOR CLASS -- remove an operator class
DROP OPERATOR CLASS [ IF EXISTS ] name USING index_method [ CASCADE | RESTRICT ]
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.
- Do not throw an error if the operator class does not exist. A notice is issued in this case.
- The name (optionally schema-qualified) of an existing operator class.
- The name of the index access method the operator class is for.
- Automatically drop objects that depend on the operator class.
- Refuse to drop the operator class if any objects depend on it. This is the default.
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
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
DROP OPERATOR FAMILY in the first place.
Remove the B-tree operator class
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.
There is no
DROP OPERATOR CLASS statement in the
|ISBN 9781906966058||The PostgreSQL 9.0 Reference Manual - Volume 1B - SQL Command Reference||See the print edition|