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  • Use FIRSTNONBLANK and LASTNONBLANK instead of MIN and MAX #dax

    You are probably used to think to FIRSTNONBLANK and LASTNONBLANK as DAX functions related to time-intelligence calculations (usually for semi-additive measures). However, these functions have a syntax and a behavior that can be useful in other scenarios. For example: you might be aware that MIN and MAX cannot be used with text columns. However, ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on February 24, 2015
  • New DAX Courses from SQLBI and conference updates #dax #powerpivot #tabular

    In the last two years, I and Alberto Ferrari delivered many courses about Power Pivot, SSAS Tabular, and DAX. We had DAX content in many of the courses, and this created some overlapping and the lack of a clear guidance for studying DAX, regardless of the tool you were using. With the upcoming release of Power BI, the number of tools where you ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on February 18, 2015
  • Customize period comparison in DAX #powerpivot #dax #powerbi

    I have seen many different types of custom calendars implemented in Power Pivot, Tabular, and DAX. I also wrote several articles (week based calendars and time patterns). However, there is a scenario that is hard to manage with the classical approaches, which I discussed in a new article. Suppose you want to implement custom comparisons. For ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on February 5, 2015
  • Dynamic ABC Classification in DAX #powerpivot #dax #ssas #tabular

    Less than one year ago I published a pattern about ABC Classification in DAX. Such a pattern was static, so an item (e.g. customer, product) is classified statically when you process a Power Pivot or Tabular model, so filters and slicers querying data do not affect the classification’s results. In the following weeks I discussed with Alberto ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on January 22, 2015
  • DAX Patterns 2015 book available now #daxpatterns #dax

    In 2014 we published several articles in the DAX Patterns web site. We’ll continue to publish new patterns in 2015 (the first one later this month!), but in the meantime we created a first printed version of the patterns available: DAX Patterns 2015. It might seem strange, but we really received several requests for a book version of the ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on January 8, 2015
  • DAX Studio 2.0 finally available! #dax #ssas #tabular #powerpivot

    Darren Gosbell announced on his blog that DAX Studio 2.0 is available. This new release has a completely new user interface, a renewed architecture and also work as a standalone executable without Excel. Yes, you read it right. You can use DAX Studio on a server without having to run it in Excel. You can now connect with Remote Desktop to your ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on December 8, 2014
  • Power Query now connects to Analysis Services #ssas #mdx #dax

    The last update of Power Query finally supports Analysis Services Multidimensional and Tabular. I waited this version for a very long time, but now it's finally here! Chris Webb already wrote an interesting blog post with several useful link and informations.  You can connect to both Multidimensional and ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on November 26, 2014
  • What are useful tools and resources for DAX developers? #dax #powerpivot #tabular

    At the last PASS Summit I received an interesting question: is there a list of all the useful (I would say necessary…) tools for DAX developers? My answer was… “no, but this is an interesting topic for a blog post”. In the meantime, I thought that a page to keep updated would have been better, and of course an easy-to-remember URL is equally ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on November 20, 2014
  • Don’t use SUMMARIZE to sum your data–or just be careful #dax #ssas #powerpivot

    During the last PASS Summit I and Alberto Ferrari had long discussions at SQL Clinic with some of the developers of our loved tools. Sometime you really have to dig in the internals of certain feature to understand why there are some “unexpected” behaviors for certain functions. One of the discussions was about SUMMARIZE. This function can be very ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on November 18, 2014
  • The state of Multidimensional and Tabular adoption

    SQL Server Analysis Services is a product that does not have its own product code, being sold as part of SQL Server. I think that also Microsoft does not know (and cannot know) the exact number of users. For this reason, it’s also more difficult to analyze the effective usage of the two different model types: Multidimensional and Tabular. Thus, ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on October 23, 2014
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