Calculating the number of new and returning customers is a recurring question. I would say this is a “classical” Business Intelligence problem, very common in marketing department. I worked on these problems with many customers, with small and large datasets,  Read more

A few days ago I published a new article on DAX Patterns web site describing how to implement Basket Analysis in DAX. This topic is a very classical one and is also covered in the many-to-many revolution white paper. It has been also discussed in several  Read more

One of the first models I created for the many-to-many revolution white paper was the Survey one. At the time, it was in Analysis Services Multidimensional, and then we implemented it in Analysis Services Tabular and in Power Pivot, using the DAX language.  Read more

During the keynote of the PASS Business Analytics Conference, Amir Netz presented the new forecasting capabilities in Power View for Office 365. I immediately tried the new feature (which was immediately available, a welcome surprise in a Microsoft announcement  Read more

Comparing sales and budget, or costs and budget, is a very common operation. However, it is often the case that you have different granularities for different tables containing budget and the data to compare with. There are two ways to do that: you can  Read more

A common question I receive from Excel users learning Power Pivot is how to handle table that have different granularities. In reality, this terminology is not the one they use: the concept of “table granularity” is used mostly by Kimball practitioners,  Read more

Microsoft silently added the ISEMPTY function to the DAX language in Analysis Services build 11.00.3368 (SQL Server 2012 SP1 CU4). This function is particularly important in DAXMD (when you use DAX to query a Multidimensional model), because produces  Read more

I recently published the ABC Classification article in www.daxpatterns.com, which is a more structured and organized way that recap what I already described in this blog a few years ago (see ABC Analysis in PowerPivot ). The pattern describe how to implement  Read more

The recent Time Patterns article published in www.daxpatterns.com contains many DAX formulas that I hope will be useful to anyone is interest in implementing time-related calculations in DAX without relying on the Time Intelligence functions. There are  Read more

DAX includes several statistical functions, such as average, variance, and standard deviation. Other common algorithms require some DAX code and we published an article about common Statistical Patterns on www.daxpatterns.com , including: Average Moving  Read more