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User Group meeting in Copenhagen for #powerpivot

The next Monday, March 21st, I will join a special event organized by the Danish SQL Server User Group , Excelbi.dk and the Swedish SQL Server User Group . The meeting will start at 18:00 at the Radisson Royal Blu in Copenhagen, and this is the topic  Read more

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Attribute Overwriting in MDX

Jeffrey Wang wrote a great blog post about attribute overwriting in MDX that is very clear and full of helpful pictures to show what happens when you write an MDX statement that writes into your multidimensional space. This is very common in an MDX Script  Read more

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Microsoft BI Conference 2011 in Lisbon

Anyone interested in BI from Portugal or Spain should not miss the Microsoft BI Conference 2011 in Lisbon : one full day ( March, 25, 2011 ) with three tracks on Business Intelligence: Decision Makers BI pros Intro to BI. I am going to present two sessions  Read more

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PowerPivot and Parent/Child hierarchies

Does PowerPivot handle Parent/Child hierarchies? The common answer is “no”, since it does not handle them natively. During last PowerPivot course in London, I have been asked the same question once more and had an interesting discussion about this severe  Read more

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Slowly Changing Dimensions handling in PowerPivot (and BISM?)

During the PowerPivot Workshop in London we received many interesting questions and Alberto had the inspiration to write this nice post about Slowly Changing Dimensions handling in PowerPivot. It is interesting the consideration about SCD Type I attributes  Read more

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PowerPivot and the Slowly Changing Dimensions

Slowly changing dimensions are very common in the data warehouses and, basically, they store many versions of the same entity whenever a change happens in the columns for which history needs to be maintained. For example, the AdventureWorks data warehouse  Read more

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PowerPivot FILTER condition optimizations

In the comments of a recent post from Alberto Ferrari there was an interesting note about different performance related to the order of conditions in a FILTER call. I investigated about that and Jeffrey Wang has been so nice to give me some info about  Read more

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PowerPivot: Putting two stocks on the same PivotChart

In a previous post , I have used a stock exchange scenario to speak about how to compute moving averages in a complex scenario. Playing with the same scenario, I felt the need to compare two stocks on the same chart, choosing the stock names with a slicer.  Read more

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PowerPivot, Stocks Exchange and the Moving Average

In this post I want to analyze a data model that perform some basic computations over stocks and uses one of the most commonly needed formula there (and in many other business scenarios): a moving average over a specified period in time. Moving averages  Read more

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Working days calculation with PowerPivot

Whenever you have to calculate the distance between two dates, you can simply subtract two dates and DAX in PowerPivot will give you the answer. However, in case you want to calculate the difference in terms of working days you have to instruct your data  Read more