Linq查詢與分組和獨特的嵌套select語句

Question

我想下面的SQL語句轉換成LINQ查詢：

select COUNT(*), itemid, globalid, title, preview, previewimage, previewimage_alt, link 
from (
     select distinct Id, itemid, globalid, title, preview, previewimage, previewimage_alt, 
       (select top 1 link from LikeCounter where GlobalId=x.GlobalId) as link 
     from [LikeCounter] x 
     where PortalId=1 and LanguageId=1 
    ) as t 
GROUP BY itemid, globalid, title, preview, previewimage, previewimage_alt, link 
ORDER BY COUNT(*) desc 

查詢是在保存對象的記錄被「喜歡一個視圖」。由於對象可以在多個位置發佈，並且視圖被設置爲允許過濾某個特定位置，所以在對記錄進行分組之前，需要有一個獨特的視圖來查找視圖計數（這就是「鏈接」附加查詢的原因「欄）。

是否可以在一個linq語句中嵌套SELECT語句？

內部查詢是沒有問題的：

(from x in LikeCounter 
where x.PortalId==1 && x.LanguageId==1 
select new {x.Id, x.ItemId, x.GlobalId, x.LanguageId, x.Title, x.Preview, x.PreviewImage_alt, 
       Morelink=(from y in LikeCounter 
       where y.GlobalId==x.GlobalId 
       select y.Morelink).FirstOrDefault() 
      }).Distinct() 

但是，有沒有辦法用的不同的記錄分組擴展這個，的結果在短短的一個數據庫查詢？

預先感謝任何輸入...

尼娜

編輯：

下面的查詢返回幾乎我想要的東西 - 但會產生多個查詢到SQL Server：

(from y in 
((from x in LikeCounter 
where x.PortalId==1 && x.LanguageId==1 
select new {x.Id, x.ItemId, x.GlobalId, x.LanguageId, x.Title, x.Preview, x.PreviewImage_alt, 
       Link=(from y in Xparo_LikeCounter 
       where y.GlobalId==x.GlobalId 
       select y.Link).FirstOrDefault() 
      }).Distinct()) 
group y by y.GlobalId into grp 
select new {Data=grp, Count= grp.Count()}).OrderByDescending (x => x.Count) 

Answer 1

我想下面應該可以工作，但我不能真的測試它。不知道需要多少查詢需要要麼

from subq in (from x in LikeCounter 
       where x.PortalId==1 && x.LanguageId==1 
       select new {x.Id, x.ItemId, x.GlobalId, x.LanguageId, x.Title, x.Preview, x.PreviewImage_alt, 
       Morelink=(from y in LikeCounter 
       where y.GlobalId==x.GlobalId 
       select y.Morelink).FirstOrDefault() 
       }).Distinct() 
group subq by new {TheCount = subq.Id.Count(), subq.Id, subq.ItemId, subq.GlobalId, subq.LanguageId, subq.Title, subq.Preview, subq.PreviewImage_alt, subq.Morelink } into grouped 
order by grouped.TheCount descending;