'SELECT room_id,room_name,model_id,model_name,barcode_name,model_price_out,COUNT(item_id),SUM(item_quantity)'. ' FROM item LEFT JOIN barcode USING(barcode_id) LEFT JOIN model USING(model_id) LEFT JOIN room USING(room_id)'. ' WHERE item_valid_till=0 AND status_id=1'. ' GROUP BY model_id,room_id'. ' ORDER BY room_id,model_id;' );