item4.id=conn.QuerySingleOrDefault<int?>(" select id from dc_report_cash_flow_log where data_type=@data_type and bailun_sku=@bailun_sku and item_no=@item_no ",new
item4.id=conn.QuerySingleOrDefault<int?>(" select id from dc_report_cash_flow_log where data_type=@data_type and bailun_sku=@bailun_sku and item_no=@item_no ",new