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POA different twist on the aggregation of calculated measures in SSAS
 

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  1. POA different twist on the aggregation of calculated measures in SSAS
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    <p>I have to count something in a strange way, and it works in most cases -- both at leaves and at higher levels of aggregation across multiple dimensions. But it doesn't give correctly aggregated values for one specific dimension.</p> <p>What I have at the moment is ...</p> <pre><code>CREATE MEMBER CURRENTCUBE.[Measures].[Active Commitments] AS NULL, FORMAT_STRING = '#,#', VISIBLE = 1; SCOPE (DESCENDANTS([Date Dimension].[Fiscal Year Hierarchy],,AFTER)); [Measures].[Active Commitments] = iif([Constituent Activity].[Type].currentMember.Properties("Name")="Correspondence", sum(([Commitment Dates].[Start Date], NULL: [Date Dimension].[Fiscal Year Hierarchy]), [Measures].[Commitment Count]), sum(([Commitment Dates].[First Funded Date], NULL: [Date Dimension].[Fiscal Year Hierarchy]), [Measures].[Commitment Count])) - sum(([Commitment Dates].[Stop Date],[Commitment].[Was Commitment Ever Active].[Sometime Active], NULL: [Date Dimension].[Fiscal Year Hierarchy]), [Measures].[Commitment Count]); END SCOPE; SCOPE (DESCENDANTS([Date Dimension].[Fiscal Year Hierarchy],,AFTER)); &lt;Similar to above&gt; </code></pre> <p>As you can see, the complexity is that one type of "commitment" commences at the <code>[Start Date]</code> and others commence at the <code>[First Funded Date]</code>.</p> <p>This fails whenever multiple members of <code>[Constituent Activity]</code> are selected because in such cases the use of <code>currentMember</code> in the SCOPE statement is invalid. For example, the following MDX executes successfully but outputs <code>#Error</code> --</p> <pre><code>select [Measures].[Active Commitments] on columns ,[Date Dimension].[Fiscal Year Hierarchy].[Fiscal Year].&amp;[2011\12] on rows from Compass3 where {[Constituent Activity].[Description].[XYZ] ,[Constituent Activity].[Description].[ABC]} </code></pre> <p>I think what I need to encode within the SCOPE statement is the recursive ...</p> <pre><code>if a single member of [Constituent Activity] is current then use the calc as defined above else use [Measures].[Active Commitments] = sum(all selected members of [Constituent Activity], [Measures].[Active Commitments]) </code></pre> <p>... but how would I write that?</p>
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