小编Dee*_*Raj的帖子

这是在 linqpad 中运行的 linq，我没有收到任何错误，但是当我运行我们的项目时，我收到此错误（不支持嵌套查询。Operation1='GroupBy' Operation2='MultiStreamNest'），您可以给出解决方案吗？

  var ledgerReport = (from i in db.Items
             join si in db.SalesInvoiceDetails on i.ItemCode equals si.ItemCode
             join cat in db.categories on i.catCode equals cat.catCode
             join locw in
                 (from loc in db.LocationStocks
                  group loc by new { loc.ItemCode } into g1
                  select new { Qty1 = (Decimal?)g1.Sum(x => x.Qty) ?? 0, g1.Key.ItemCode }) on i.ItemCode equals locw.ItemCode into we
             where si.DispatchDate >= startdate && si.DispatchDate <= enddate
             group si by new
             {
                 si.ItemCode,
                 i.Description,
                 Qtt = (Decimal?)we.Sum(x …