SSAS MDX用於多對多關係

Question

使用Adventureworks DW 2008多維數據集我試圖構建MDX查詢，該查詢將返回沒有訂單的特定原因代碼的網絡訂單數。

FactInternetSales與FactInternetSalesReason具有多對多關係。每筆銷售都有一個或多個原因代碼。

如果我嘗試返回未使用「On Promotion」原因的訂單，我仍然會收到計數中包含的促銷訂單，因爲他們也有其他原因。

如何寫MDX來說，如果這個訂單有這個原因，不要將其包含在計數中，而不考慮任何其他原因？

對冒險的等效SQL工作SQL數據倉庫是：

select count(distinct salesordernumber) from FactInternetSales 
where not exists (select salesorderNumber 
        from FactInternetSalesReason 
        where SalesReasonKey = 2 
        and FactInternetSales.SalesOrderNumber = FactInternetSalesReason.SalesOrderNumber 
       ) 

Answer 1

這是互聯網訂購數：

SELECT 
    { 
    [Measures].[Internet Order Count] 
    } ON 0 
FROM [Adventure Works]; 

這是互聯網秩序與關於促進排除字數：

SELECT 
    { 
    [Measures].[Internet Order Count] 
    } ON 0 
FROM [Adventure Works] 
WHERE 
    Except 
    (
    [Sales Reason].[Sales Reason].[Sales Reason] 
    ,[Sales Reason].[Sales Reason].[On Promotion] 
); 

以下內容將這些排除事項轉化爲具體措施：

WITH 
    MEMBER [Measures].[Internet Order Count OnPromotion] AS 
    (
     [Measures].[Internet Order Count] 
    ,[Sales Reason].[Sales Reason].[On Promotion] 
    ) 
    MEMBER [Measures].[Internet Order Count excl OnPromotion] AS 
     [Measures].[Internet Order Count] 
    - 
     [Measures].[Internet Order Count OnPromotion] 
SELECT 
    {[Date].[Calendar].[(All)]} ON 0 
,{ 
    [Measures].[Internet Order Count] 
    ,[Measures].[Internet Order Count OnPromotion] 
    ,[Measures].[Internet Order Count excl OnPromotion] 
    } ON 1 
FROM [Adventure Works];