UPDATE 2019-10-18 Because of a bug in YEARFRAC function described in the original blog post and reported by Dominik Petri (thanks!), there are cases where the previous solution does not work well. Moreoever, YEARFRAC is not that fast, so a…  Read more

I received a question about how to implement the equivalent of a DISTINCTCOUNTX function in DAX. Well, such a function doesn’t exist in DAX, but imagine you want to write something like: The corresponding measure working in DAX is: In…  Read more

When you create a Tabular model for Analysis Services, the Culture and Collation properties are set automatically and cannot be changed by the SSDT user interface in Visual Studio. The biggest issue is the workspace database, because these properties cannot…  Read more

If you have a fiscal year starting in March, you can have a problem using the time intelligence functions in DAX. For example, by using February 28, the fiscal year starts on February 29th in leap years. By using February…  Read more

In the latest weeks I received several requests to support a different color for variable names in DAX Formatter, just as the formula editor available in Power BI. I finally implemented a solution that I consider a workaround, because of…  Read more

A recurring issue for Power BI users writing DAX code is that column filter removal might have an unexpected behavior when the Sort by Column is active on the column. I covered this topic in an article related to RANKX,…  Read more

If you used the DATESYTD and TOTALYTD functions in DAX, you might have noticed that the optional parameter year_end_date is a string defining the last day of the year. The default is December 31, so this parameter is used only…  Read more

In the last week, I have been speaking at two different events in a few days: SQLBits 2018 in London, UK and SQL Konferenz 2018 in Darmstadt, Germany. These two events created for SQL Server professional are now “polluted” by…  Read more

If you import more than one table into Power BI or Power Pivot, you have a data model. When you have more than one table, you usually have relationships between tables. When you analyze data, you often have many choices…  Read more

Bertrand d’Arbonneau added a new feature in the last version (v 1.09) of Power Pivot Utilities, which allows the visualization of Dependents and Precedents measures in the measure list created by the List Measures tool. How to use the new…  Read more