Marco Russo's Blog

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Common mistakes in big data models – Live Event

Don’t miss the upcoming free SQLBI live event on Friday April 16, 2021! Join Adam Saxton, Alberto Ferrari, Patrick LeBlanc, and Marco Russo to discuss common mistakes in big data models. Proper data modeling will be a hot topic in…  Read more

Introducing DAX.do

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

Testing SQLBI Live Q&A

In the past few months, we delivered an increasing number of sessions online. It did the job as a replacement for in-person events, but we did not particularly enjoy the lack of interaction among other limitations. We want to provide…  Read more

What has happened in the DAX world in 2020

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

The hard truth in numbers

We all have biases. Personally, I kick myself whenever I identify that I have applied my biases when doing an evaluation of any kind. Unfortunately, this happens often because I work with numbers every day. Do you think we at…  Read more

Default calculation item in calculation groups

Power BI offers several options to create filters and slicers in a report. However, it is not possible to define a default filter at the model level so that every new report on a dataset automatically applies that filter. The…  Read more

Announcing DAX Patterns second edition

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

Introducing Analyze in Excel for Power BI Desktop

Less than a month ago, Microsoft introduced the External Tools feature in the Power BI Desktop July 2020 release. By using DAX Studio, you were already able to create a PivotTable in Excel connected to the model hosted by Power…  Read more

Arbitrary combination of measures and calculation items

The consumption experience following the introduction of calculation groups needs to be improved in Power BI. For example, the immediate advantage of having a time intelligence calculation group is that it is no longer necessary to create multiple variations of…  Read more