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我不知道如何將此SQL語句轉換爲使用OUTER APPLY和TOP的LINQ。有人可以提出一個想法如何處理它。謝謝!如何將此SQL語句轉換爲LINQ?
SELECT Cust.CustomerName, Ord.OnlineOrderTitle, Pro.ProductTitle,
Pic.PictureFilename, PCom.PictureCommentText, Ord.OnlineOrderDateAdded
FROM Customer as Cust
OUTER APPLY
(SELECT * FROM OnlineOrder
WHERE CustomerID = Cust.CustomerID) as Ord
OUTER APPLY
(SELECT * FROM Product
WHERE OnlineOrderID = Ord.OnlineOrderID) as Pro
OUTER APPLY
(SELECT TOP 1 * FROM Accessory
WHERE ProductID = Pro.ProductID) as Acc
OUTER APPLY
(SELECT TOP 1 * FROM Picture
WHERE ProductID = Pro.ProductID) as Pic
OUTER APPLY
(SELECT TOP 1 * FROM PictureComment
WHERE PictureID = Pic.PictureID) as PCom
ORDER BY Ord.OnlineOrderDateAdded DESC
爲什麼不把它作爲一個SQL視圖並以這種方式使用它? 可能不完全是你想要的,但它絕對是一種解決方法。 – Rippo 2009-10-26 07:40:16
這看起來有點像過度設計的'join'。也許你可以在T-SQL中將它重寫爲'join',然後將其轉換爲LINQ-to-SQL? – bzlm 2009-10-26 08:16:34