Question

我有这样的查询：

SELECT AVG( [ DC ]. [ ContractedAmount ]) AS [AverageContractedAmount]
    , MAX([DC].[ContractedAmount]) AS [MaxContractedAmount]
    , MIN([DC].[ContractedAmount]) AS [MinContractedAmount]
    FROM [DesignCustomer] AS [DC]
    INNER JOIN [Design] AS [D] ON [DC].[DesignKey] = [D].[DesignKey]
    INNER JOIN [Task] AS [T] ON [D].[DesignKey] = [t].[DesignKey]
    INNER JOIN [ProjectDesign] AS [PD] ON [D].[DesignKey] = [PD].[DesignKey]
    INNER JOIN [Project] AS [P] ON [PD].[ProjectKey] = [P].[ProjectKey]
    INNER JOIN [Address] AS [A] ON [A].[AddressGuid] = [P].[ProjectGuid]
    WHERE [DC].[ContractedAmount] != 0.00
    AND [D].StatusKey = 66
    AND (@MinWoodStories IS NULL OR [P].[WoodStories] BETWEEN @MinWoodStories AND @MaxWoodStories)
    AND (@MinNumberOfUnits IS NULL OR [P].[NumberOfUnits] BETWEEN @MinNumberOfUnits AND @MaxNumberOfUnits)
    AND (@MinSqrFootage IS NULL OR [P].[SquareFootage] BETWEEN @MinSqrFootage AND @MaxSqrFootage)
    AND (@MinNumberOfSegs IS NULL OR [P].[Bldg_Segs] BETWEEN @MinNumberOfSegs AND @MaxNumberOfSegs)
    AND ([DC].[CustomerKey] = @CustomerKey
    OR [A].[RegionKey] = @RegionKey
    OR [A].[StateKey] = @StateKey)

如您在我的最后一个AND子句中所见，我有“ RegionKey = @RegionKey”

 AND ([DC].[CustomerKey] = @CustomerKey
                      OR [A].[RegionKey] = @RegionKey
                      OR [A].[StateKey] = @StateKey)

在某些情况下，我会收到@RegionKey = 0，这在我的数据库中不作为寄存器存在。案例0在我的代码中表示“全部”，因此我想知道如何在@RegioKey参数中收到0的情况下修改此查询，只需删除regionKey过滤器即可。我该如何实现？

Answer 1

AND ([DC].[CustomerKey] = @CustomerKey
                      OR [A].[RegionKey] = @RegionKey OR @RegionKey = 0
                      OR [A].[StateKey] = @StateKey)

根据收到的参数值删除过滤器

1 个答案: