ALTER OPERATOR
ALTER OPERATOR
ALTER OPERATOR - change the definition of an operator
Synopsis
ALTER OPERATORname( {left_type| NONE } , {right_type| NONE } ) OWNER TO {new_owner| CURRENT_USER | SESSION_USER } ALTER OPERATORname( {left_type| NONE } , {right_type| NONE } ) SET SCHEMAnew_schemaALTER OPERATORname( {left_type| NONE } , {right_type| NONE } ) SET ( { RESTRICT = {res_proc| NONE } | JOIN = {join_proc| NONE } } [, ... ] )
Description
ALTER OPERATOR
changes the definition of
an operator.
You must own the operator to use
ALTER OPERATOR
.
To alter the owner, you must also be a direct or indirect member of the new
owning role, and that role must have
CREATE
privilege on
the operator's schema. (These restrictions enforce that altering the owner
doesn't do anything you couldn't do by dropping and recreating the operator.
However, a superuser can alter ownership of any operator anyway.)
Parameters
-
name -
The name (optionally schema-qualified) of an existing operator.
-
left_type -
The data type of the operator's left operand; write
NONEif the operator has no left operand. -
right_type -
The data type of the operator's right operand; write
NONEif the operator has no right operand. -
new_owner -
The new owner of the operator.
-
new_schema -
The new schema for the operator.
-
res_proc -
The restriction selectivity estimator function for this operator; write NONE to remove existing selectivity estimator.
-
join_proc -
The join selectivity estimator function for this operator; write NONE to remove existing selectivity estimator.
Examples
Change the owner of a custom operator
a @@ b
for type
text
:
ALTER OPERATOR @@ (text, text) OWNER TO joe;
Change the restriction and join selectivity estimator functions of a custom operator
a && b
for type
int[]
:
ALTER OPERATOR && (_int4, _int4) SET (RESTRICT = _int_contsel, JOIN = _int_contjoinsel);
Compatibility
There is no
ALTER OPERATOR
statement in
the SQL standard.