vardc_average_purchase_data=connectionHelper._connection.QuerySingleOrDefault<dc_average_purchase>(" select * from dc_average_purchase where bailun_sku=@bailun_sku and warehouse_code=@warehouse_code ",new
vardc_average_purchase_data=connectionHelper._connection.QuerySingleOrDefault<dc_average_purchase>(" select * from dc_average_purchase where bailun_sku=@bailun_sku and warehouse_code=@warehouse_code order by supplier_id desc limit 1 ",new