在LINQ上編寫SQL查詢時遇到問題

Question

我有一個sql查詢返回所有帳戶，並在結果表頂部我有共享相同文檔的帳戶。下面的查詢工作得很好，堅持有一個問題在linq上實現相同的邏輯。請幫忙！

select 
(
    select 
     COUNT(*) 
    from Signs X, Signs Y 
    where X.AccountID = 2 and Y.AccountID = A.ID and X.DocID = Y.DocID 
), 
* 
from 
    Accounts A 
where 
    A.ID != 2 
order by 1 desc 

Answer 1

var result = from A in Accounts 
      where A.ID != 2 
      select new { Count = (from X in Signs 
            from Y in Signs 
            where X.AccountID == 2 && 
            Y.AccountID == A.ID && 
            X.DocID == Y.DocID 
            select 1).Count(), 
          A }; 

注意：你也許可以改變子查詢上DocID一個join但我已經保留原樣，這樣你就可以看到SQL和LINQ之間的相似性。

例與聯接：

var result = from A in Accounts 
      where A.ID != 2 
      select new { Count = (from X in Signs 
            join Y in Signs on X.DocID equals Y.DocID 
            where X.AccountID == 2 && 
            Y.AccountID == A.ID 
            select 1).Count(), 
          A };