Changes the definition of an operator.
ALTER OPERATOR <name> ( {<left_type> | NONE} , {<right_type> | NONE} )
OWNER TO { <new_owner> | CURRENT_USER | SESSION_USER }
ALTER OPERATOR <name> ( {<left_type> | NONE} , {<right_type> | NONE} )
SET SCHEMA <new_schema>
ALTER OPERATOR name ( { <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 does not do anything you could not do by dropping and recreating the operator. However, a superuser can alter ownership of any operator anyway.)
NONE
if the operator has no left operand.
NONE
if the operator has no right operand.
NONE
to remove the existing selectivity estimator.
NONE
to remove the 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.
CREATE OPERATOR, DROP OPERATOR
Parent topic: SQL Commands