Man Pages

drop_operator_class(7) - phpMan drop_operator_class(7) - phpMan

Command: man perldoc info search(apropos)  


DROP OPERATOR CLASS(7)           SQL Commands           DROP OPERATOR CLASS(7)



NAME
       DROP OPERATOR CLASS - remove an operator class


SYNOPSIS
       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.

       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.

SEE ALSO
       ALTER OPERATOR CLASS [alter_operator_class(7)], CREATE OPERATOR CLASS [create_operator_class(7)], DROP OPERATOR
       FAMILY [drop_operator_family(7)]



SQL - Language Statements         2014-02-17            DROP OPERATOR CLASS(7)