CREATE OPERATOR FAMILY - define a new operator family
CREATE OPERATOR FAMILY name USING index_method
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 in the documentation for further information.
name The name of the operator family to be created. The name can be
The name of the index method this operator family is for.
CREATE OPERATOR FAMILY is a PostgreSQL extension. There is no CREATE
OPERATOR FAMILY statement in the SQL standard.
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)]