CREATE OPERATOR FAMILY — define a new operator family
CREATE OPERATOR FAMILY
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
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
The new operator family is initially empty. It should be
populated by issuing subsequent
OPERATOR CLASS commands to add contained operator classes,
ALTER OPERATOR FAMILY
commands to add “loose” operators and their corresponding
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 37.14 for further information.
The name of the operator family to be created. The name can be schema-qualified.
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.
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