Alberto Ferrari's blog posts of 2011

Page 3 of 31 blog posts
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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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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: 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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Self-Service BI: BI to Excel or Excel to BI?

I spend most of my time developing complex BI solutions and, doing that, I always talk with DBA, developers, CEO, data analysts and the many kind of people that work around a BI solution. Nevertheless, in these last months, publishing posts about PowerPivot  Read more

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Working days computation in PowerPivot

A very frequent question, when performing business analysis, is to count the number of working days in a certain period of time. Creating a data model with PowerPivot that gracefully handles working days is pretty easy, nevertheless it is worth a post.  Read more

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Dynamic Ranking with Excel and PowerPivot

Ranking is useful and, in our book , I and Marco provide a lot of information about how to perform ranking with PowerPivot. Nevertheless, there is an interesting scenario where ranking can be performed without complex DAX formulas, but with just some  Read more