PowerPivot for Excel is an Add-In which uses a local version of Analysis Services (SSAS) to process data and make calculation to respond to user queries made using Excel 2010. The SSAS engine is loaded in-memory in the process of…  Read more

As you might already know, I and Alberto Ferrari are writing a book about PowerPivot 2010 for Excel. The official title is Microsoft PowerPivot for Excel 2010: Give Your Data Meaning and you can already order it on Amazon! However,…  Read more

There are already several posts in the blogosphere about the need of using a separate Dates table in PowerPivot to make almost any type of analysis. An important step you should make whenever you have a Dates table (almost always,…  Read more

The sample files of the PowerPivot book are available at this page, where you can download a 260Mb zipped file containing all the Excel workbooks used in the book to make the examples.  Read more

Yesterday I delivered my Inside DAX session at PASS 2010. Someone might have missed the link to buy the PowerPivot for Excel 2010 book with a 50% discount that is valid just today. The link is http://oreil.ly/sqlpass2010!  Read more

One week ago I described the PowerPivot Workshop Roadshow that we are planning in several European countries. The news today is that the Workshop will be in Frankfurt (Germany) on February 21-22, 2011! The registrations are open on www.powerpivotworkshop.com web…  Read more

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…  Read more

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 in a…  Read more

Jeffrey Wang wrote a very detailed blog post about recursive calculations in MDX with Analysis Services. In these days I’m doing some comparison between DAX and MDX (well, between Vertipaq/PowerPivot and OLAP/SSAS engines) and I’m discovering that MDX calculation engine…  Read more

Alberto Ferrari published an interesting blog post regarding how to write particular calculations over a parent-child hierarchy in PowerPivot Denali (and in BISM Tabular, of course). One case is the Sum of Leaves (summing only the leaves of a parent-child…  Read more