5
我使用Csharp的LINQ到創建以下報告使用具有聯接使用兩個地方兩個表
LINQ我有兩個表如下
#Users nid pid name 1 1 name1 2 1 name2 #Transactions nid tid location dcode 1 T1 L1 D1 2 T1 L2 D1 2 T2 L1 D1 2 T2 L3 D1
該報告包含
a) columns from users table where nid != pid b) columns from transactions where tid == T2 and nid = results from a) c) the combination can have only one top row in result nid name tid Location 2 name2 T2 L1 the second record will not be present - 2 name2 T2 L3
我試過以下,使用加入
var report = (from u in users where u.nid != u.pid
join t in transactions
where t.tid == "T2"
on u.nid equals t.nid
select new
{
// the report columns
}).Distinct().ToList();
在第二顯示
一個錯誤「其中」謝謝你的任何援助
是的,錯誤已經消失,我會在8分鐘後將其標記爲答案..再次感謝 – arvind