ALTER OPERATOR — change the definition of an operator
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_schema
ALTER OPERATORname
( {left_type
| NONE } , {right_type
| NONE } ) SET ( { RESTRICT = {res_proc
| NONE } | JOIN = {join_proc
| NONE } } [, ... ] )
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.)
name
The name (optionally schema-qualified) of an existing operator.
left_type
The data type of the operator's left operand; write
NONE
if the operator has no left operand.
right_type
The data type of the operator's right operand; write
NONE
if 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.
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);
There is no ALTER OPERATOR
statement in
the SQL standard.