varskus=_connection.Query<yinjusku_dto>($@" select bailun_sku,sku_title_cn from dc_base_stock where usable_stock>0 and warehouse_code in ('GZBLWH','BLGZ03') and bailun_sku not in (
dbSku.id=_connection.QueryFirstOrDefault<int?>(" select id from dc_report_invest_return_sku where sku=@sku and project=@project limit 1 ",new{sku=item.bailun_sku,project=dbSku.project})??0;