varoldData=_connection.QuerySingleOrDefault<dc_average_warehouse>(" select * from dc_average_warehouse where warehouse_code=@warehouse_code and bailun_sku=@bailun_sku ",new
_connection.Execute(" delete from dc_base_order_data_source where bailun_sku_warehouse_code=@bailun_sku_warehouse_code and order_type=@order_type ",new