SQL視圖語句連接

Question

誰能幫我這個問題，我試過很多次，但還沒有找到解決辦法 這裏原來認爲我在我的數據庫，但現在我做數據庫的變化和該觀點也需要改變。

這是因爲它認爲：

SELECT 
    [tableN].*, 
    [tabB].[att1] AS tabB_email, [tabB].[name] AS tabB_name, 
    [tabC].[name] AS tabC_name 
FROM 
    [tabC] 
INNER JOIN 
    ([tableN] 
INNER JOIN [tabB] ON [tableN].[sender_id] = [tabB].[ID]) 
    ON [tabC].[ID] = [tableN].[recipient_id] 

這裏是什麼對我來說是難點。現在我沒有這個2個表tabB和tabC

他們現在在一個表tabX並有一個標識符字段roleId。我設法得到除了最後一個[tabC].[name] AS tabC_name

任何想法都列？

Answer 1

SELECT [TableN].*, Bd.[email] AS bd_email, Bd.[showname] AS bd_name, 
     Pc.[showname] AS pc_name 
    FROM 
     [TABLE_X] AS Pc 
     INNER JOIN ([TableN] 
     INNER JOIN [TABLE_X] AS Bd 
     ON [TableN].[sender_id] = Bd.[ID] AND Bd.roleID = 1) 
     ON Pc.[ID] = [TableN].[recipient_id] AND Pc.roleID = 2 

我終於找到了正在工作的需要

Answer 2

SELECT [tableN].*, [Tabx] .[att1] AS tabB_email, [Tabx] .[name] AS tabB_name 

    FROM [Tabx] A 

    INNER JOIN [TABLEN] B 

    ON A.ROLEID=B.RECIPIENT_ID 

Answer 3

嘗試這樣

SELECT [tableN].*, [tabX].[att1] AS tabB_email, [tabX].[name] AS tabB_name, 
t1.[name] AS tabC_name 
FROM [tabX] as t INNER JOIN ([tableN] INNER JOIN [tabX] 
ON [tableN].[sender_id] = [tabX].[roleid]) 
ON t.[roleid] = [tableN].[recipient_id]