C＃将SQL查询转换为LINQ

Question

我有我认为是一个复杂的SQL查询，我需要将它转换为LINQ查询。但是，我只是LINQ的初学者，并不知道如何才能正常工作。我试过搜索互联网，但仍无法使其正常工作。

这里是我的SQL查询：

SELECT 
    a.empid, 
    CAST(IF(COUNT(*) > 10,FLOOR(COUNT(*)/10),1) AS CHAR(100)) lim, 
    CAST(GROUP_CONCAT(internalid) AS CHAR) internalIDS 
FROM tblLogs a 
INNER JOIN 
    (
     SELECT 
      DISTINCT empid 
     FROM tblLogs 
     WHERE IsDeleted = 0 AND DateAdded = 2013-04-18 
    ) b ON a.empid = b.empid 
WHERE IsDeleted = 0 AND Remarks NOT LIKE '%proxy date used%' AND DateAdded = 2013-04-18 AND RecType = 8 
GROUP BY empid; 

嗨。这里是我更新的linq查询，但是它返回一个错误Linq，Entities不能识别方法string.join。这有什么问题？谢谢。 :)

var rows = from rec in context.tblWMSLogs join rec1 
         in context.tblWMSLogs.Where(t => t.DateAdded == refDate2 && t.IsDeleted == 0) 
         on rec.EmpID equals rec1.EmpID 
        where rec.DateAdded == refDate2 && rec.IsDeleted == 0 && !rec.Remarks.Contains("proxy date used") && rec.RecType == recType 
        group rec by rec.EmpID into g 
        select new WMSRandomViewModel 
        { 
         EmpID = g.Key, 
         Lim = (g.Count() > 10 ? Math.Ceiling(g.Count()/10d) : 1), 
         InternalIDs = string.Join(",", g.OrderBy(s => s.InternalID).Select(s => s.InternalID)) 
        };//string.Join(",", g.OrderBy(s => s.InternalID).Select(s => s.InternalID)) 
      //return rows.ToList(); 
      return rows.ToList(); 

Answer 1

这就像你想要的？

var rows = 
     from rec in context.tblLogs.AsEnumerable() 
     join rec1 
      in context.Where(t => t.DateAdded == refDate && t.IsDeleted == 0) 
      on rec.EmpID equals rec1.EmpID 
     where rec.DateAdded == refDate && rec.IsDeleted == 0 && !rec.Remarks.Contains("proxy date used") && rec.RecType == recType 
     group rec by rec.EmpID into g 
     select new 
     { 
      g.Key, 
      lim = (g.Count() > 10 ? Math.Floor(g.Count()/10d) : 1).ToString(), 
      InternalIDS = string.Join("", g.OrderBy(s => s.InternalId).Select(s => s.InternalId)) 
     }; 

现在，我的问题，

为什么有内您的SQL加入？内连接中的where子句可以移动到主查询的where子句中