create_operator_family(7) [centos man page]

CREATE OPERATOR 
FAMILY(7)				  PostgreSQL 9.2.7 Documentation				 CREATE OPERATOR FAMILY(7)

NAME

       CREATE_OPERATOR_FAMILY - define a new operator family

SYNOPSIS

       CREATE OPERATOR FAMILY name USING index_method

DESCRIPTION

       CREATE OPERATOR FAMILY creates a new operator family. An operator family defines a collection of related operator classes, and perhaps some
       additional operators and support functions that are compatible with these operator classes but not essential for the functioning of any
       individual index. (Operators and functions that are essential to indexes should be grouped within the relevant operator class, rather than
       being "loose" in the operator family. Typically, single-data-type operators are bound to operator classes, while cross-data-type operators
       can be loose in an operator family containing operator classes for both data types.)

       The new operator family is initially empty. It should be populated by issuing subsequent CREATE OPERATOR CLASS commands to add contained
       operator classes, and optionally ALTER OPERATOR FAMILY commands to add "loose" operators and their corresponding support functions.

       If a schema name is given then the operator family is created in the specified schema. Otherwise it is created in the current schema. Two
       operator families in the same schema can have the same name only if they are for different index methods.

       The user who defines an operator family becomes its owner. Presently, the creating user must be a superuser. (This restriction is made
       because an erroneous operator family definition could confuse or even crash the server.)

       Refer to Section 35.14, "Interfacing Extensions To Indexes", in the documentation for further information.

PARAMETERS

       name
	   The name of the operator family to be created. The name can be schema-qualified.

       index_method
	   The name of the index method this operator family is for.

COMPATIBILITY

       CREATE OPERATOR FAMILY is a PostgreSQL extension. There is no CREATE OPERATOR FAMILY statement in the SQL standard.

SEE ALSO

       ALTER OPERATOR FAMILY (ALTER_OPERATOR_FAMILY(7)), DROP OPERATOR FAMILY (DROP_OPERATOR_FAMILY(7)), CREATE OPERATOR CLASS
       (CREATE_OPERATOR_CLASS(7)), ALTER OPERATOR CLASS (ALTER_OPERATOR_CLASS(7)), DROP OPERATOR CLASS (DROP_OPERATOR_CLASS(7))

PostgreSQL 9.2.7						    2014-02-17						 CREATE OPERATOR FAMILY(7)

Check Out this Related Man Page

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  particu-
       lar,  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_fam-
       ily(7)]

SQL - Language Statements					    2010-05-14						    DROP OPERATOR CLASS(7)

Linux and UNIX Man Pages

create_operator_family(7) [centos man page]

Check Out this Related Man Page