The Next step on using SQL Server Analysis Service (SSAS) as Business Intelligence (BI) / Warehouse (BW) platform is to master Multi Dimensional Expression (MDX), it’s like Query on T-SQL. Question, how to master MDX script language on SSAS (SQL Server Analysis Service) ? or where to start ? Firts thing first, you have to… Continue reading
The MDX script on Microsoft Analysis Service (SSAS) 2008 and 2005 are different from SQL 2000. Here’s an example how to calculate average using MDX script on Analysis Service 2008. SSAS 2008, How to calculate Net Value By Date (NetValue / Date)
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AVG( Descendants( [Time].[Calendar].CurrentMember, [Time].[Calendar].[Date] ), [Measures].[NetValue] ) |
Old one, SSAS 2000, How to calculate Net Value By Date (NetValue… Continue reading
IIf function often used in MultiDimensionalExpression (MDX), It’s quiet simple to implement single block of IIf block. This an example of Multiple IIf logic block. Example1:
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IIf(Measures.[Store Sales] > 50000, "Good", IIf(Measures.[Store Sales] > 30000, "Average", IIf(Measures.[Store Sales] > 10000, "Poor", "No"))) |
A logical script in MDX to perform an “If..Then.. Else..” block.
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IIf(«Logical Expression», «Numeric/String Expression1», «Numeric/String Expression2») |
Example1:The following example returns 0 if Measures.CurrentMember is an empty cell, 1 otherwise:
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IIf(IsEmpty(Measures.CurrentMember), 0, 1) |
Example2:The following string returns the string “Yes” if Measures.CurrentMember is an empty cell, the string, “No” otherwise:
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IIf(IsEmpty(Measures.CurrentMember), "Yes", "No") |
Example3:
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IIf( [Scenario].CurrentMember IS [Scenario].[Budget], [Measures].[Budget Unit Sold], [Measures].[ActualUnit Sold] ) |
Example4:Average Sales (Measure) By Time Day (Dimension)
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IIf ( ([Time].currentmember.level.name = "(All)" OR [Time].currentmember.level.name = "Year" OR [Time].currentmember.level.name = "Quarter" OR [Time].currentmember.level.name = "Month" OR [Time].currentmember.level.name = "Day" ),AVG(Descendants(Time.CurrentMember,[Time].[Day]),Measures.[Sales]),0) |
Source:… Continue reading
There’s a few scenario to calculate a percentage of a measure in OLAP CUBE (Analysis Service 2000). A Percentage is common calculation in MDX , and it can be solved by divide a measure to total value (Grand Total). Sample 1:Measures.[Value Contribution to Total]:
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(Measures.[Value] / (Measures.[Value], Time.[All Time], Products.[All Products],…) |
Sample 2:Measures.[Value Contribution to Total]:
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(Measures.[Value] / (Measures.[Value], Products.[All Products],Warehouses.[All Warehouses]) |
Sample 3:Measures.[Product Contribution to… Continue reading
This post is copy from http://gumper.com, a unique website coz it’s only have one item…. The basic script of Multi Dimensional Expression (MDX). It’s very usefull for developer to build some scenarios in a CUBE. thank you, hope it’s ok i copied all the page. MDX Expressions Function Requires Returns CurrentMember Dimension Member PrevMember Member… Continue reading