I found an issue upgrading an Excel workbook containing PowerPivot data from Excel 2010 to Excel 2013. All CUBEMEMBER and CUBEVALUE functions point to a cube name that has been changed between the two version – you have to no longer reference the PowerPivot  Read more

I recently published a set of rules for DAX code formatting . The following is an example of what I obtain: CALCULATE ( SUMX ( Orders, Orders[Amount] ), FILTER ( ALL ( Customers ), CALCULATE ( COUNTROWS ( Sales ), ALL ( Calendar[Date] ) ) > 42 + 8  Read more

Recently I had to write a DAX formula containing a LASTDATE within the logical condition of a FILTER: I found that its behavior was not the one I expected and I further investigated. At the end, I wrote my findings in this article on SQLBI , which can  Read more

Short version: the latest available version of MDX Studio can be downloaded from http://www.sqlbi.com/tools/mdx-studio/ Long version: Last week Stacia Misner twitted that the online version of MDX Studio was no longer available. It was hosted on http://mdx.mosha.com  Read more

Short update about community events in Europe where I will speak. On October 11 I will present DAX in Action in Köln – all details in the PASS local chapter here: http://www.sqlpass.de/Regionen/Deutschland/K%C3%B6lnBonnD%C3%BCsseldorf.aspx I will be speaking  Read more

I recently came in a problem trying to improve the parallelism of Tabular processing. As you know, multiple tables can be processed in parallel, whereas the processing of several partitions within the same table cannot be parallelized. When you perform  Read more

If you started using DAX as a query language, you might have encountered some performance issues by using SUMMARIZE. The problem is related to the calculation you put in the SUMMARIZE, by adding what are called extension columns , which compute their  Read more

After many conferences and travels, this summer I had some time to write and prepare new sessions for the next wave of conferences. In reality I am just doing that, even if I already restarted traveling for consulting and training. So expect new content  Read more

The collaboration I and Alberto started with Project Botticelli is starting producing content. At this point we have three videos available: DAX in Action shows the power of DAX in PowerPivot solving common patterns not so easy or fast to solve in other  Read more

During the last months I and Alberto worked in several projects using Analysis Services Tabular and we had to face real world issues, such as complex queries, large data volume, frequent data updates and so on. Sometime we faced the challenge of comparing  Read more