It is not common to face rounding differences in Power BI. However, when it happens, users are usually disappointed and surprised.  Read more

Here we are, at the end of another year, to see what happened in the DAX world.  Read more

There are cases where the dictionary size reported by VertiPaq Analyzer (used by DAX Studio, Bravo for Power BI, and Tabular Editor 3) does not correspond to the actual memory required by the dictionary. However, the number reported is technically…  Read more

DAX Studio 3 was released today. This new, major version offers a new user interface and user experience, providing a modern look and feel without losing any of the features available in previous versions. On the contrary, in DAX Studio…  Read more

We recently updated SUMMARIZECOLUMNS on DAX Guide by adding an example that clarifies the difference between a filter applied to SUMMARIZECOLUMNS and a filter applied to CALCULATETABLE. Most of the times, you can move a filter from a SUMMARIZECOLUMNS argument…  Read more

The Whiteboard is a new series on the SQLBI YouTube channel where I use a whiteboard to describe abstract DAX and Tabular concepts in a more interactive way. I usually represent these concepts by drawing on a whiteboard in our…  Read more

If you try to use SELECTEDVALUE on the visible column of the table generated by the Fields Parameters feature in Power BI, you get the following error: Calculation error in measure ‘Sales'[Selection]: Column [Parameter] is part of composite key, but…  Read more

When working on the Mastering Tabular video course, we needed a sample database with more data than what we had at our disposal in existing sample databases. We also wanted to be able to control the content so that different…  Read more

Did you ever experience a long waiting time while opening a Power BI Desktop file? There could be many reasons for that, but if you have calculated columns and/or calculated tables in your model, you should be aware that they…  Read more

We recently discussed an issue related to the Dictionary size reported by Bravo for Power BI that, in reality, references the behavior of VertiPaq Analyzer, which relies on data management views (DMV) provided by the underlying Analysis Services engine. Because…  Read more