的OData是產生錯誤的URL或只是我用錯了關鍵字

Question

我有這樣的查詢，

https://example.com/_vti_bin/exampleService/exampleService.svc/Categories? 
$filter=Products/any(x:x/Status eq toupper('DELETED'))& 
$select=ID,Products/Status,Products/Title& 
$expand=Products 

但基於狀態它沒有過濾的數據集=刪除，並返回其具有的地位不會被刪除等產品。

我看着SQL跟蹤而這也帶來這樣的事情，

exec sp_executesql N'SELECT 
    [Project2].[C1] AS [C1], 
    [Project2].[C2] AS [C2], 
    [Project2].[C3] AS [C3], 
    [Project2].[ID] AS [ID], 
    [Project2].[C4] AS [C4], 
    [Project2].[C5] AS [C5], 
    [Project2].[C8] AS [C6], 
    [Project2].[ID1] AS [ID1], 
    [Project2].[C6] AS [C7], 
    [Project2].[C7] AS [C8], 
    [Project2].[Title] AS [Title], 
    [Project2].[Status] AS [Status] 
    FROM (SELECT 
     [Extent1].[ID] AS [ID], 
     1 AS [C1], 
     N''DataAccess.Product'' AS [C2], 
     N''ID'' AS [C3], 
     N''Products'' AS [C4], 
     N'''' AS [C5], 
     [Extent2].[ID] AS [ID1], 
     [Extent2].[Title] AS [Title], 
     [Extent2].[Status] AS [Status], 
     CASE WHEN ([Extent2].[ID] IS NULL) THEN CAST(NULL AS varchar(1)) ELSE N''DataAccess.Product'' END AS [C6], 
     CASE WHEN ([Extent2].[ID] IS NULL) THEN CAST(NULL AS varchar(1)) ELSE N''Title,Status,ID'' END AS [C7], 
     CASE WHEN ([Extent2].[ID] IS NULL) THEN CAST(NULL AS int) ELSE 1 END AS [C8] 
     FROM [dbo].[Categories] AS [Extent1] 
     LEFT OUTER JOIN [dbo].[Products] AS [Extent2] ON [Extent1].[ID] = [Extent2].[ProductID] 
     WHERE ([Extent1].[ClientID] = @p__linq__0) AND (EXISTS (SELECT 
      1 AS [C1] 
      FROM [dbo].[Products] AS [Extent3] 
      WHERE ([Extent1].[ID] = [Extent3].[ProductID]) AND (([Extent3].[Status] = (UPPER(N''DELETED''))) OR (([Extent3].[Status] IS NULL) AND (UPPER(N''DELETED'') IS NULL))) 
     )) 
    ) AS [Project2] 
    ORDER BY [Project2].[ID] ASC, [Project2].[C8] ASC',N'@p__linq__0 int',@p__linq__0=23 

是否正確使用「EQ」如果我只想產品，其狀態爲「已刪除」並沒有什麼Ë lse？

編輯

我使用的OData V3，使用WCF數據服務與EF

Answer 1

我相信這個問題是在查詢中。 表格你說像網址...

// get me categories 
https://example.com/_vti_bin/exampleService/exampleService.svc/Categories? 

// where any product is deleted 
$filter=Products/any(x:x/Status eq toupper('DELETED'))& 

// return the category id, product status and title 
$select=ID,Products/Status,Products/Title& 
$expand=Products 

換句話說，你是被刪除的狀態過濾類別中他們不是產品。 您可以添加第二個過濾器來處理產品過濾，並僅返回類別及其過濾後的一組產品。

嘗試這樣的事情，而不是...

https://example.com/_vti_bin/exampleService/exampleService.svc/Categories? 
$filter=Products/any(x:x/Status eq toupper('DELETED'))& 
$select=ID,Products/Status,Products/Title& 
$expand=Products/any(p:p/Status eq toupper('DELETED')) 

根據您的情況可能是最好的轉身查詢...

https://example.com/_vti_bin/exampleService/exampleService.svc/Products? 
$filter=Status eq toupper('DELETED')& 
$select=Category/ID,Status,Title 

...通過拉一組產品和他們的相關類別Id，您會得到相同的結果，但可以直接在基本查詢上過濾這些產品，而不是使用更復雜的子集合過濾器。

正如在聊天中所討論的那樣，這確實需要一個有效的OData模型，其中產品和類別之間的關係被正確定義。