Since its release, I’ve seen a number of scenarios where Analysis Services Tabular is the analytical engine of the reporting section in a larger system. In these conditions, at least a part of the queries sent to Analysis Services are DAX queries generated  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

Between May and July I and Alberto will be speaker at several conferences, and I think it could be useful to write a single blog post with a recap: PASS Business Analytics Conference 2014 – May 7-9, 2014 – San Jose, California Querying in DAX (Marco Russo)  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

I recently tried Excel for iPad and tried opening several workbooks. The results are pretty good, but I’ve found that it wasn’t possible to display certain workbooks. For example, opening a workbook that contains many CUBEVALUE formulas, I should have  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

The current version of Power Query does not have a user interface to create a Distinct Count calculation in a Group By operation. However, you can do this in “M” with a simple edit of the code generated by the Power Query window. Consider the following  Read more

If you use DISTINCTCOUNT measures in DAX, you know performance are usually great, but you might have also observed that the performance slow down when the resulting number is high (depending on other conditions, it starts decreasing between 1 and 2 million  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