This article explains how to use KEEPFILTERS to intersect instead of overriding an existing filter context in DAX, simplifying the code and improving performance.  Read more

This article compares the differences between calculated columns and calculated tables from a processing and storage point of view.  Read more

In the second half of 2017 I will deliver sessions and preconference days in two big events. I’d like to recap my sessions here, let me know if you have any questions about them. Microsoft Ignite 2017 – September 25-29,…  Read more

This article explains how to correctly measure the dictionary size of a column in a model created in Power BI, Power Pivot, or Analysis Services Tabular.  Read more

I recently wrote a few articles about a new function in DAX and the use of variables. For those of you using Power BI or Azure Analysis Services, you always have access to the latest version of the language. Well, in reality I see that new features appears  Read more

This article explains how to improve DAX queries using GENERATE and ROW instead of ADDCOLUMNS when you create table expressions.  Read more

In the next three weeks I will deliver many speeches and training in United States. Here is the list: June 11, 2017 : Precon Data Modeling with Power BI at Microsoft Data Insights Summit (Seattle, WA) June 12, 2017 : Workshop DAX 101 at Microsoft Data  Read more

SQLBI offers a new introductory DAX video course called Introducing DAX. This article describes which users will benefit more from this learning experience, and how to enroll in the course.  Read more

This article describes the differences in the levels available in Azure Analysis Services (Azure AS), comparing them with the features in SQL Server Analysis Services (SSAS) on-premises.  Read more

In the last few years, I and Alberto Ferrari assisted many users of Power Pivot and Power BI who wanted to create their reports using these tools and were struggling with getting the desired numbers from their data. The first approach of an Excel user  Read more