def METHOD_NAME(pgcnx):
	result = pgcnx.query("""SELECT o.oprname AS left_unary,
			rt.typname AS operand, result.typname AS return_type
		FROM pg_operator o, pg_type rt, pg_type result
		WHERE o.oprkind='l' AND o.oprright = rt.oid
			AND o.oprresult = result.oid
		ORDER BY operand""")
	return result