$selectQuery =  $this->getSelect()
            ->join(array('rt' => $reviewTable),
                'rt.entity_pk_value = e.entity_id',
                array('review_id', 'created_at', 'entity_pk_value', 'status_id'))
                ->join(array('rdt' => $reviewDetailTable), 'rdt.review_id = rt.review_id')
                ;