One of the latest addition to DAX has been the ability to apply an external filter context to SUMMARIZECOLUMNS, which makes this function a perfect replacement for SUMMARIZE in DAX. In The Definitive Guide to DAX I introduced such a function, but at the  Read more

When you use the time intelligence functions in DAX, it is relatively easy to filter the same dates selection in the previous year by using the SAMEPERIODLASTYEAR or DATEADD functions. However, if you follow the best practices, it is likely that you have  Read more

If you work with Power Pivot, Power BI, or Analysis Services Tabular, you probably already know VertiPaq Analyzer. If you never used it, with the new release 1.7 you have another couple of very good reason to try it. VertiPaq Analyzer is a Power Pivot  Read more

If you think that the end of the year would have been a quiet time because the Power BI team will skip their monthly release (but are we sure?), you might be reassured (or disappointed depending on your perspective) looking at the news I have in this  Read more

If you want to format a measure as date in Power BI, you need an expression returning a date/time data type. This is different from what you can do in Power Pivot and in SSAS Tabular, where you can format any numeric expression using a date and/or time  Read more

The SQL Server Data Tools (SSDT) editor for Tabular models has been improved in the recent updates. For example, the Tabular Model Explorer enables you to quickly jump between the entities of your model organized in a hierarchical way. However, when it  Read more

Microsoft recently released the Service Pack 1 for SQL Server 2016. If you use Analysis Services, installing this update is a no-brainer and you should do that as soon as possible. The reason are all related to memory management. Microsoft officially  Read more

Last week, a new version of DAX Studio (2.5.0) has been released. You can find a summary of the new features in the blog post from Darren Gosbell – thanks Darren for your wonderful job with this tool! My small contribution to this tool is mainly in the  Read more

A few hours ago, DAX Studio 2.5.0 has been released, with a number of small new features (I will write about DirectQuery and new column in Server Timings in a future blog post and article). In the many bug fixes, this version of DAX Studio does not raise  Read more

One week ago I delivered a session for 24 hour of PASS, the online free event delivered by PASS ( recordings are now available ), where I introduced my one-day preconference Create a Power BI Solution in one day that I will deliver at PASS Summit 2016  Read more