On April 23 I will present DAX in Action in London and Cardiff at SQLLunch event.How is it possible I will be in two places at the same time?This will be a remote presentation delivered in two locations, where you can have lunch while watching the session. What is this session about? This is the session description:Tabular is the new SSAS ...

Analysis Services answers to query in MDX, in DAX (by now just for Tabular models) and has a limited capability to answer SQL queries. It is not useful for any development or client tool, but I wanted to write a blog post on it in order to be able to retrieve these information I gathered during study of DAX and MDX queries sent to Tabular ...

Jeffrey Wang started the 2012 (or finished the 2011, depending on your time zone) by publishing the first article dedicated to DAX Query plan. While I look forward to reading next articles, it is interesting the explanation of what is the relationship between MDX and DAX in Analysis Services 2012. An MDX query sent to a Tabular model is not ...

In September 2006 I had announced in this blog the release of the first version of The Many-to-Many Revolution, a whitepaper that describes how to leverage the many-to-many dimension relationships feature that had being available since Analysis Services 2005. The paper contains many generic patterns that can be applied in many common data ...

I just published the article Converting MDX to DAX – First Steps on the renewed SQLBI web site about converting MDX to DAX. The reason is that with BISM Tabular in Analysis Services 2012 you will be able to write queries in both DAX and MDX. If you already know MDX, you might wonder how to “translate” your MDX knowledge in DAX. I think that this ...

Javier Guillén wrote several blog post about how to implement certain common calculations in PowerPivot. It is interesting to read his posts not only because of the solutions he propose, but also because he uses several techniques that can be applied in other scenarios. Here is a list of posts and reasons to read:Calculating Moving Averages in ...

During TechEd 2011, Microsoft announced an important update to its BI roadmap. The reason why this is important is related to the previous announcement, which I discussed in November 2010 by including links to several sources and comments. At PASS Summit 2010 the announcement regarding the next version of SQL Server, codenamed ''Denali'', ...

Jeffrey Wang wrote a very detailed blog post about recursive calculations in MDX with Analysis Services. In these days I'm doing some comparison between DAX and MDX (well, between Vertipaq/PowerPivot and OLAP/SSAS engines) and I'm discovering that MDX calculation engine is much more smart than you might think in certain conditions. I cannot ...

Chris Webb posted a wonderful solution to the Last “ever” non empty calculation in MDX. I never thought to this solution and it is really a nice approach. I think that DAX might be faster in this scenario – a similar calculation has been shown in this post from Alberto Ferrari, but to do a better comparison we should replicate the same calculation ...

Jeffrey Wang wrote a great blog post about attribute overwriting in MDX that is very clear and full of helpful pictures to show what happens when you write an MDX statement that writes into your multidimensional space. This is very common in an MDX Script and if you tried to customize the DateTool solution you probably experienced how hard this ...