> * * @throws Exception */ public function iterateNumeric(): Traversable; /** * Returns an iterator over the result set rows represented as associative arrays. * * @return Traversable> * * @throws Exception */ public function iterateAssociative(): Traversable; /** * Returns an iterator over the values of the first column of the result set. * * @return Traversable * * @throws Exception */ public function iterateColumn(): Traversable; }