Alberto wrote a really fine post that should help you to better understand how many-to-many relationships can work in PowerPivot, using a lot of images that explain some concepts better than a thousand words. The example shown by Alberto is really interesting  Read more

I will be a speaker this year at PASS Summit 2010 in Seattle, and I will present two sessions. The one I’d like to talk about in this post is the Inside DAX one. I chose to do this session (instead of another one that was initially planned) because when  Read more

Alberto Ferrari posted an interesting article that show how you can use a continuous value in a group of values in PowerPivot. I think this is a feature that many users would like to get in a standard Analysis Services cube, but that unfortunately requires  Read more

Banding is one of the most common requirements when you have the need to analyze continuous values, like the retail price of a product which may change over time, due to discounts and price variations. I have already spoken about banding with regards  Read more

Yesterday I had a nice time delivering the SQLBI Methodology session at 24 Hours of PASS . A few hours later, I had the news about the official RTM of the PowerPivot book I wrote with Alberto. The complete title is Microsoft® PowerPivot for Excel® 2010:  Read more

Today I prepared a table of the many rounding functions available in DAX (yes, it’s part of the book we’re writing), so that I have a complete schema of the better function to use, depending on the round operation I need to do. Here is the list of functions  Read more

I just read the Dave Wickert post about his sessions about PowerPivot from Microsoft at TechEd 2010 in New Orleans (June 7-10, 2010) and there are at least two things I’d like to add. First of all, there is also another conference! In fact, this time  Read more

If you use PowerPivot and write some DAX formula, don’t miss this post on PowerPivotPro blog – if you want to get an external editor for your DAX formula, you can use Notepad++ for free – and adding the customization described in this post by Colin Banfield,  Read more

When you use CALCULATE in DAX you are creating a new filter context for the calculation, based on the existing one. There are a few functions that are used to clear or preserve a column filter. These functions are: ALL – it can be used with one or more  Read more

UPDATE 2017-07-12: please note this article was written in 2010, there are now better ways to obtain the same result. Please read these articles: Physical and Virtual Relationships in DAX and Propagate filters using TREATAS in DAX PowerPivot supports  Read more