ALTER OPERATOR SQL - Language Statements ALTER OPERATOR change the definition of an operator ALTER OPERATOR ALTER OPERATOR name ( { lefttype | NONE } , { righttype | NONE } ) OWNER TO newowner ALTER OPERATOR changes the definition of an operator. The only currently available functionality is to change the owner of the operator. name The name (optionally schema-qualified) of an existing operator. lefttype The data type of the operator's left operand; write NONE if the operator has no left operand. righttype The data type of the operator's right operand; write NONE if the operator has no right operand. newowner The new owner of the operator. You must be a superuser to change the owner of an operator. Change the owner of a custom operator a @@ b for type text: ALTER OPERATOR @@ (text, text) OWNER TO joe; There is no ALTER OPERATOR statement in the SQL standard.