查詢調用兩個其他查詢

Question

我在Access 2010數據庫中編寫查詢，該查詢在同一Access 2010數據庫中調用兩個其他查詢。其結果將是一個表格報告具有以下字段：

FirstName, LastName, HomePhone, ClientNumber, Level, nextDate, Type 

客戶/列的列表是通過查詢1，這也填充名字，姓氏，HOMEPHONE和客戶編號生成。然後，Query2填充Level，nextDate和Type FOR上述第一個查詢中定義的每個客戶行。

到目前爲止，彙總查詢，我已是：

SELECT Query1.FirstName, Query1.LastName, Query1.HomePhone, Query1.ClientNumber, Query2.[Level], Query2.nextDate, Query2.Type 
FROM Query1 
INNER JOIN Query2 ON Query1.ClientNumber=Query2.ClientNumber; 

但是，當我嘗試在數據表視圖本摘要查詢的結果，訪問給我一個對話框，要求Query2.ClientNumber，這表明代碼中的某些內容沒有正確引用該變量。

僅供參考，這裏是查詢1代碼：

SELECT ActiveCustomers.FirstName, ActiveCustomers.LastName, tblClientAddress.HomePhone, ActiveCustomers.ClientNumber 
FROM 
(
    SELECT Clients.ClientNumber, Clients.FirstName, Clients.LastName 
    (  
     SELECT COUNT(ReferralDate)  FROM IntakeTable  WHERE Clients.ClientNumber = IntakeTable.ClientNumber AND Len(ReferralDate & '') > 0 
    ) AS IntakeCount, 
    (  
     SELECT COUNT(ExitDate)  FROM ExitTable  WHERE Clients.ClientNumber = ExitTable.ClientNumber AND Len(ExitDate & '') > 0 
    ) AS ExitCount 
FROM Clients 
) AS ActiveCustomers 
INNER JOIN tblClientAddress ON ActiveCustomers.ClientNumber=tblClientAddress.ClientNumber 
WHERE IntakeCount > ExitCount AND tblClientAddress.CurrentResidence = True; 

這裏是QUERY2代碼：

SELECT a.[Level], max(a.dte) AS nextDate, IIf([Type1Date]<[Type2Date],"t1","t2") AS [Type] 
FROM (
    select [Level], Type1Date as dte 
    FROM CommunicationTable WHERE ClientNumber=1 
    UNION 
    select [Level], Type2Date as dte 
    FROM CommunicationTable WHERE ClientNumber = 1 
) AS a 
GROUP BY a.[Level], IIf(a.[Type1Date]<a.[Type2Date],"t1","t2"); 

有人能告訴我該如何設置，以便它運行正常？

Answer 1

當你加入並嵌套這樣的查詢時，它有助於描繪什麼被「暴露」到外部查詢中。 Query2有一個嵌套查詢，a，它不會公開ClientNumber，因此Query2不能（也不會嘗試）將ClientNumber公開到連接。試試這個爲Query2：

SELECT a.[Level], max(a.dte) AS nextDate, IIf([Type1Date]<[Type2Date],"t1","t2") AS [Type], a.ClientNumber 
FROM (
    select [Level], Type1Date as dte, ClientNumber 
    FROM CommunicationTable WHERE ClientNumber=1 
    UNION 
    select [Level], Type2Date as dte 
    FROM CommunicationTable WHERE ClientNumber = 1 
) AS a 
GROUP BY a.[Level], IIf(a.[Type1Date]<a.[Type2Date],"t1","t2"); 

這樣一來，外面的查詢可以「看到」 ClientNumber欄上的連接兩側。