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

I recently implemented Power BI models by extracting data from Azure Data Lake Storage (ADSL) Gen 2, and I wanted to share a lesson learned when using this connector.  Read more

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

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

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

I was recently reading an interesting question by a user. Given a date/time value and a number of hours, add the number of hours to the date, but considering some constraints related to working hours: The working hours are 09:00-17:00…  Read more

This week OKViz released Smart Filter Pro 2.0.5, which is the first commercial version of a custom visual for Power BI produced by OKViz. This is the first of other rich and advanced visuals that will be released in the…  Read more