Starting from the May 2020 version of Power BI Desktop, regardless of the Windows locale settings DAX always uses standard separators by default. This change does not affect most Power BI users around the world; but if you use the…  Read more

UPDATE 2020-03-28: Calculation groups are coming soon to Power BI Desktop, read the added section at the bottom of the post. I am glad to announce that we just released an additional module about Calculation Groups to the Mastering DAX…  Read more

DAX Formatter was created in 2013 to help users format their code based on the Rules for DAX Code Formatting published in October 2012. Because the main goal is to make the code immediately readable and recognizable, DAX Formatter purposely…  Read more

Another year has gone by and it has now been 10 years since DAX was first introduced in late 2009. As usual, it is time to review the past year and to take a look at the year ahead.  Read more

If you created a Tabular model using one of the preview versions (CTP, RC, …) of Analysis Services 2019, you don’t have the final structure for the Ordinal attribute that Microsoft defined in the final version of compatibility level 1500.…  Read more

UPDATE 2021-06-29: also read Choosing Azure Analysis Services or Power BI Premium for large datasets – SQLBI containing updates about Power BI Premium Gen2. I often get questions about use cases for Azure Analysis Services. So I wanted to do…  Read more

In 2015 I released the first version of VertiPaq Analyzer, a tool to quickly analyze the structure and data distribution of a Tabular model that can be used with Analysis Services and Power BI.  Read more

The second edition of The Definitive Guide to DAX is now available worldwide! This blog post explains why we felt the need to rewrite the book and describes what happens behind the scenes when producing a book.  Read more

I recently had an issue in Power BI Desktop that started to display the error message “Uncertified Connectors”. What was really strange is that Power BI was not trusting… Power BI itself! I am not sure whether this started after…  Read more

A few weeks ago I woke up on a Saturday morning with a question notified on my Quora feed: Why do all the BI consultants hate DAX? I was challenged to answering the question because I personally love DAX but…  Read more