WHERE集成了IIF的sql

Question

我在嘗試IIF語句時無法獲得Where語句的工作。我已經嘗試了幾個變種的SQL無濟於事。我想要做的是計數假期直到某個日期收益。當我單獨使用我的Between語句時，它工作正常。當系統時鐘超過5-20-13後，當我嘗試重置計數器時，如果它剛剛通過的陣亡將士紀念日假期顯示1，則不返回結果。我無法弄清楚正確的語法代碼段上是

WHERE (((SchedulingLog.EventDate)=IIf(Date()>DateSerial(Year(Date()),5,20),((SchedulingLog.EventDate) Between DateSerial(Year(Date()),5,20) And DateSerial(Year(Date())+1,5,20)),((SchedulingLog.EventDate) Between DateSerial(Year(Date())-1,5,20) And DateSerial(Year(Date()),5,20))))) 

下面是我的整個sql。

SELECT Roster.UserID, SchedulingLog.Category, 
Sum(IIf([CatDetail] Like '*Gain*',[Value],0)) AS Gain, DateSerial(Year(Date()),5,20) AS ResetDate, Date() AS [Date] 
FROM SchedulingLog INNER JOIN Roster ON SchedulingLog.UserID = Roster.UserID 
WHERE (((SchedulingLog.EventDate)=IIf(Date()>DateSerial(Year(Date()),5,20),((SchedulingLog.EventDate) Between DateSerial(Year(Date()),5,20) And DateSerial(Year(Date())+1,5,20)),((SchedulingLog.EventDate) Between DateSerial(Year(Date())-1,5,20) And DateSerial(Year(Date()),5,20))))) 
GROUP BY Roster.UserID, SchedulingLog.Category, DateSerial(Year(Date()),5,20), Date() 
HAVING (((SchedulingLog.Category) Like "DH*" Or (SchedulingLog.Category) Like "Comp*")); 

任何援助將不勝感激。

Answer 1

我相信問題是雙重的，首先你要找你的DATE = BETWEEN日期和日期。不知道這是否是Access中的問題，語法通常是WHERE日期BETWEEN日期和日期。 第二個問題是試圖在IIF語句中返回一個命令，而不是返回要由BETWEEN語句評估的值。

我認爲這應該工作：

SELECT Roster.UserID, SchedulingLog.Category, 
Sum(IIf([CatDetail] Like '*Gain*',[Value],0)) AS Gain, DateSerial(Year(Date()),5,20) AS ResetDate, Date() AS [Date] 
FROM SchedulingLog INNER JOIN Roster ON SchedulingLog.UserID = Roster.UserID 
WHERE SchedulingLog.EventDate BETWEEN IIf(Date()>DateSerial(Year(Date()),5,20) 
               ,DateSerial(Year(Date()),5,20) 
               ,DateSerial(Year(Date())-1,5,20)) 
          AND IIf(Date()>DateSerial(Year(Date()),5,20) 
               ,DateSerial(Year(Date())+1,5,20) 
               ,DateSerial(Year(Date()),5,20)) 
GROUP BY Roster.UserID, SchedulingLog.Category, DateSerial(Year(Date()),5,20), Date() 
HAVING (((SchedulingLog.Category) Like "DH*" Or (SchedulingLog.Category) Like "Comp*"));