運行環境為Visual Studio 2010，數據庫為SQL Server 2008。

執行下面SQL語句

SELECT SubsiteId, SubsiteTitle, count(CollectionID) CollectionNumber,count(LName) PlantNumber
   FROM (SELECT DISTINCT SubsiteId, SubsiteTitle, CollectionID, LName, CName
              FROM Cumplag_Garden_Plants where lname=‘Agave sisalana‘) 
group
 
 by SubsiteId, SubsiteTitle

在企業管理器中運行正常，可以查詢到結果，但是放在程序中卻始終提示500內部錯誤。以下是C#代碼：

1 SqlConnection conn = new SqlConnection(strConn);
2 SqlCommand cmd = new SqlCommand(sql, conn);
3 conn.Open();
4 SqlDataAdapter sda = new SqlDataAdapter(cmd);
5 sda.Fill(ds, "ds");  //這裏出錯
6 conn.Close();

對代碼try catch也捕獲不到異常。

解決方法：只要將內部子查詢添加一個別名即可。

SELECT  q.SubsiteId, q.SubsiteTitle, count(q.CollectionID) CollectionNumber,count(q.LName) PlantNumber
    FROM (SELECT DISTINCT SubsiteId, SubsiteTitle, CollectionID, LName, CName
             FROM Cumplag_Garden_Plants where lname=‘Agave sisalana‘) q
group by SubsiteId, SubsiteTitle

SQL Server子查詢填充DataSet時報500內部錯誤的解決辦法