TSQL條件where子句問題

Question

我有下面的查詢，我需要進行更改，而我很難用where子句來表示。

所需要的變化是關於參數@EquipmentBreakdown ＆ @PropertyCasualty 。 目前它們按預期工作，但我需要一個新條件。

現在的情況 ：

@EquipmentBreakdown = 0 AND  @PropertyCasualty = 0  Return all rows

@EquipmentBreakdown = 1 AND  @PropertyCasualty = 0  Return all rows where LCRep.EB = 1 

@EquipmentBreakdown = 0 AND  @PropertyCasualty = 1  Return all rows where LCRep.PC = 1

新條件 ：

@EquipmentBreakdown = 1 AND  @PropertyCasualty = 1  Return all rows

在維護現有邏輯的同時，如何稱呼where子句以捕獲新條件？

查詢：

SELECT 'Month' AS [Period],
    ISNULL(Zone.ZoneID,'') AS ZoneID,
    ISNULL(Zone.ZoneName,'') AS ZoneName,
    ISNULL(Region.RegionCode,'') AS RegionCode,
    ISNULL(Region.RegionName,'') AS RegionName,
    Branch.BranchID,
    ISNULL(Branch.BranchName,'') AS BranchName,
    SR01.ServicingRep,
    ISNULL(LCRep.RepName,'') AS RepName,
    SUM(ISNULL(RequestsOnSiteView.CountOfRequests,0)) AS RequestsOnSite,
    SUM(ISNULL(HoursOnSiteView.SumHours,0)) AS HoursOnSite,
    SUM(ISNULL(RequestsOffSiteView.CountOfRequests,0)) AS RequestsOffSite,
    SUM(ISNULL(HoursOffSiteView.SumHours,0)) AS HoursOffSite,
    SUM(ISNULL(RequestsNonReportView.CountOfRequests,0)) AS RequestsNonReport,
    SUM(ISNULL(HoursNonReportView.SumHours,0)) AS HoursNonReport
FROM dbo.SR01
    LEFT JOIN dbo.HoursOnSiteView ON HoursOnSiteView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.HoursOffSiteView ON HoursOffSiteView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.HoursNonReportView ON HoursNonReportView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.RequestsOnSiteView ON RequestsOnSiteView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.RequestsOffSiteView ON RequestsOffSiteView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.RequestsNonReportView ON RequestsNonReportView.ReportKey = SR01.ReportKey 
    LEFT JOIN dbo.LCRep ON SR01.ServicingRep = LCRep.RepID
    LEFT JOIN dbo.Branch ON SR01.ServicingBranch = Branch.BranchID
    LEFT JOIN dbo.Region ON Region.RegionCode = Branch.Region
    LEFT JOIN dbo.Zone ON Zone.ZoneAbbrev = Region.Zone 
WHERE ISNULL(SR01.ServicingBranch,'-') <> '-'
    AND SR01.[Status]='X'
    AND SR01.RequestType <> 'MN' 
    AND SR01.DateComplete BETWEEN DATEADD(month, DATEDIFF(month, 0, @DateTo), 0) AND @DateTo
    AND Zone.ZoneID IN (@Zone)
    AND Region.RegionCode IN (@Region)
    AND Branch.BranchID IN (@Branch)
    AND LCRep.RepID IN(@RepID)  
    AND (@EquipmentBreakdown = 0 OR (LCRep.EB = @EquipmentBreakdown)) 
    AND (@PropertyCasualty = 0 OR (LCRep.PC = @PropertyCasualty))
GROUP BY Zone.ZoneID, Zone.ZoneName, Region.RegionCode, Region.RegionName, Branch.BranchID, BranchName, SR01.ServicingRep, LCRep.RepName

Answer 1

好的，看起來下面是一個可行的解決方案，但是我不確定它是否是理想的解決方案。

SELECT 'Month' AS [Period],
    ISNULL(Zone.ZoneID,'') AS ZoneID,
    ISNULL(Zone.ZoneName,'') AS ZoneName,
    ISNULL(Region.RegionCode,'') AS RegionCode,
    ISNULL(Region.RegionName,'') AS RegionName,
    Branch.BranchID,
    ISNULL(Branch.BranchName,'') AS BranchName,
    SR01.ServicingRep,
    ISNULL(LCRep.RepName,'') AS RepName,
    SUM(ISNULL(RequestsOnSiteView.CountOfRequests,0)) AS RequestsOnSite,
    SUM(ISNULL(HoursOnSiteView.SumHours,0)) AS HoursOnSite,
    SUM(ISNULL(RequestsOffSiteView.CountOfRequests,0)) AS RequestsOffSite,
    SUM(ISNULL(HoursOffSiteView.SumHours,0)) AS HoursOffSite,
    SUM(ISNULL(RequestsNonReportView.CountOfRequests,0)) AS RequestsNonReport,
    SUM(ISNULL(HoursNonReportView.SumHours,0)) AS HoursNonReport
FROM dbo.SR01
    LEFT JOIN dbo.HoursOnSiteView ON HoursOnSiteView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.HoursOffSiteView ON HoursOffSiteView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.HoursNonReportView ON HoursNonReportView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.RequestsOnSiteView ON RequestsOnSiteView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.RequestsOffSiteView ON RequestsOffSiteView.ReportKey = SR01.ReportKey
    LEFT JOIN dbo.RequestsNonReportView ON RequestsNonReportView.ReportKey = SR01.ReportKey 
    LEFT JOIN dbo.LCRep ON SR01.ServicingRep = LCRep.RepID
    LEFT JOIN dbo.Branch ON SR01.ServicingBranch = Branch.BranchID
    LEFT JOIN dbo.Region ON Region.RegionCode = Branch.Region
    LEFT JOIN dbo.Zone ON Zone.ZoneAbbrev = Region.Zone 
WHERE ISNULL(SR01.ServicingBranch,'-') <> '-'
    AND SR01.[Status]='X'
    AND SR01.RequestType <> 'MN' 
    AND SR01.DateComplete BETWEEN DATEADD(month, DATEDIFF(month, 0, @DateTo), 0) AND @DateTo
    AND (@EquipmentBreakdown = 0 OR (@EquipmentBreakdown = 1 AND @PropertyCasualty = 1) OR (LCRep.EB = @EquipmentBreakdown)) 
    AND (@PropertyCasualty = 0 OR (@EquipmentBreakdown = 1 AND @PropertyCasualty = 1) OR (LCRep.PC = @PropertyCasualty))
GROUP BY Zone.ZoneID, Zone.ZoneName, Region.RegionCode, Region.RegionName, Branch.BranchID, BranchName, SR01.ServicingRep, LCRep.RepName