DAX is simple, but it is not easy. I cannot remember how many times I read this sentence on social media, attributed to me. For good reason: I have repeated this sentence at almost every classroom course I delivered over…  Read more

When you use the time intelligence functions in DAX, it is relatively easy to filter the same dates selection in the previous year by using the SAMEPERIODLASTYEAR or DATEADD functions. However, if you follow the best practices, it is likely…  Read more

In the last two years, I and Alberto Ferrari delivered many courses about Power Pivot, SSAS Tabular, and DAX. We had DAX content in many of the courses, and this created some overlapping and the lack of a clear guidance…  Read more

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Announcing SQLBI Days: more options to improve your DAX knowledge!

At SQLBI, Alberto Ferrari and I spend most of our time sharing our knowledge and expertise in DAX. We have been doing this for years, navigating through conferences, workshops, and videos, encountering many individuals – from eager beginners to seasoned…  Read more

DAX.do is a new website by SQLBI where you can write and run DAX queries over a sample Contoso database. The goal of DAX.do is purely educational: if you are learning DAX or are merely curious to test a new…  Read more

One of the latest addition to DAX has been the ability to apply an external filter context to SUMMARIZECOLUMNS, which makes this function a perfect replacement for SUMMARIZE in DAX. In The Definitive Guide to DAX I introduced such a…  Read more

Great news! Just one year after releasing the second edition of The Definitive Guide to DAX, we just published a new website, a new book, and a new collection of videos: the second edition of DAX Patterns! DAX Patterns is…  Read more

I am so happy to announce that The Definitive Guide to DAX is finally available! I and Alberto Ferrari spent one year writing this book, and several years collecting the knowledge necessary to do that. The complete title is The…  Read more

At the end of a year marked by the pandemic, it is time for our usual review of what happened in the DAX realm. The enthusiasm we typically demonstrate in this traditional end-of -year post is tainted this year by…  Read more

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What happened in the DAX world in 2023

Our end-of-the-year tradition is to recap what happened in the DAX and SQLBI world and look at what is coming next.  Read more