如何在LINQ c中編寫此查詢＃

Question

$sql = "SELECT * FROM installment WHERE SellorderID = ("; 
$sql .= "SELECT ID FROM sellorder WHERE ShopID = ("; 
$sql .= "SELECT ID FROM shop WHERE Number = $shopno)) AND Received = 0"; 

$shopno是函數的參數。

Answer 1

這是一個開放式問題。
您的目標解決方案是想要使用LinqToSql，實體框架，本地數據源還是......？

我建議你看看這個指南，以更多地瞭解C＃中的LinqToSql。

Simple LINQ to SQL in C#

希望它能幫助。

Answer 2

試試這個：

from i in Installment 
join so in SellOrder 
    on i.SellOrderId equals so.ID 
join sh in Shop 
    on so.ShopId equals sh.Id 
where sh.Number == $shopno && i.Received == 0 
select i