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

Wow, this time I have been able to make an announcement before Marco Russo! The PowerPivot course we are bringing in tour all over Europe has three new dates available for booking: Copenhagen : 21-22, March 2011 at the Radisson Blu Royal Hotel. Dublin  Read more

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

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

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

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

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

As always, I am a bit later than Marco in producing news. Nevertheless, I am very excited to tell you  the new date for the Frankfurt workshop on PowerPivot: February 21-22, 2011 . Save the date and find all the relevant information on www.powerpivotworkshop.com  Read more

Hurry up! On January, 17 the early bird rate for the London PowerPivot Workshop will finish. You have a few days to save £150 from the regular price. Don’t miss the opportunity to attend the best PowerPivot workshop in Europe saving some money too.  Read more

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