public static function getVolumeByStoreId($storeId)
{
$sql = 'SELECT sum(t0.count * t1.price) FROM ' . static::tableName() . ' AS t0 LEFT JOIN ' . Goods::tableName() . ' AS t1 ON t0.goods_id = t1.id WHERE t0.store_id=:store_id;';
$volume = Yii::$app->db->createCommand($sql, [':store_id' => $storeId])->queryScalar();
return bcadd($volume, '0', 2);
}