Linq 综合写法

var queryCount = (from pv in db.Province
join pc in (from cc in
         ((from v in db.ERPStockProductTrigger
         join s in db.Storage on v.StorageID equals s.StorageID
         join b in db.BranchSet on s.BranchSetID equals b.Id
         join p in db.Product on v.ProductID equals p.Id
         join c in db.PriceProfile.Where(w => w.Type == 1) on p.Id equals c.ProductID
         where s.RecordStatus == 1 && s.IsDelivery == true && s.IsWholesale == false
                   && b.BranchType == 53 && b.RecordStatus == 1
                   && p.RecordStatus == 1 && p.ProductName.Contains(pager.ProductName) && p.SkuCode.StartsWith(pager.SkuCode)
       select new { p.SkuCode, s.ProvinceCode }).Distinct())
       group cc by cc.ProvinceCode into gc
       select new { ProvinceCode = gc.Key, Pcount = gc.Count() }) on pv.Code equals pc.ProvinceCode into tpc
from ttpc in tpc.DefaultIfEmpty()

join ps in (from cc in (from r in db.SupermarketProducts
             join p in db.Product on r.ProductId equals p.Id
             join c in db.PriceProfile.Where(w => w.Type == 1) on p.Id equals c.ProductID
             where r.Status == 0 && r.IsEnable == 1 && p.ProductName.Contains(pager.ProductName) && p.SkuCode.StartsWith(pager.SkuCode)
             select new { r.SkuCode, ProvinceCode = r.Province })
             group cc by cc.ProvinceCode into gc
            select new { ProvinceCode = gc.Key, Pcount = gc.Count() }) on pv.Code equals ps.ProvinceCode into tps
from ttps in tps.DefaultIfEmpty()

join pt in (from hr in db.SupermarketProductHis1
             join br in (from cc in db.SupermarketProductHis1
                            group cc by cc.Province into gc
                            select new { Province = gc.Key, ReviseTime = gc.Max(cc => cc.ReviseTime) }
                         ) on new { hr.Province, hr.ReviseTime } equals new { br.Province, br.ReviseTime }
             select new { hr.ReviseTime, hr.Reviser, ProvinceCode = hr.Province }) on pv.Code equals pt.ProvinceCode into tpt
from ttpt in tpt.DefaultIfEmpty()

select new { Province = pv.Code, ProvinceName = pv.Name, SkuSum = (ttpc == null ? 0 : ttpc.Pcount), SkuSumSetting = (ttps == null ? 0 : ttps.Pcount), ttpt.ReviseTime, ttpt.Reviser }
);

queryCount = queryCount.Where(q => q.SkuSum > 0);
if (!string.IsNullOrWhiteSpace(pager.ProvinceCode))
{
               queryCount = queryCount.Where(q => q.Province == pager.ProvinceCode);
}
data.total = queryCount.Count();
data.data = queryCount.Select(s => new SupermarketProductSum { Province = s.Province, ProvinceName = s.ProvinceName, SkuSum = s.SkuSum, SkuSumSetting = s.SkuSumSetting, ReviseTime = s.ReviseTime, Reviser = s.Reviser }).OrderBy(s => s.ProvinceName).ToList();