I have experienced (on difference customer’s databases) some performance issues related to security in SSAS Tabular models. The symptoms are that certain queries, pivot table, or reports, have good performance when you connect as a database administrator,  Read more

The 2015 has been an amazing year for Power BI. One year ago, I was commenting on this blog the public preview of Power BI dashboards. A few days ago, Microsoft released the December update of Power BI Desktop and several updates of the Power BI service.  Read more

David DeWitt and Rimma Nehme delivered the day 2 keynote at PASS Summit 2015 talking about Internet of Things. Many PASS attendees know David for providing some of the best keynotes every, technical and without vaporware and marketing stuffs. So this  Read more

I’m sitting at the bloggers table at the Day 1 keynote of PASS Summit 2015 and I try to recap the important news for the BI community. SQL Server Analysis Services 2016 CTP 3 will be available in a few days here , but Microsoft already announced the news  Read more

I don’t usually blog about news, unless there is a relevant impact on future directions. Last week we have seen a huge number of announcements for Power BI ( Custom Visuals now available to anyone through a gallery online, you can import them in also  Read more

If you use Analysis Services Tabular, you should dedicate a good amount of time in hardware selection. Unfortunately, throwing money in expensive hardware configuration could be a very bad idea, resulting in your 1,500$ desktop running faster than your  Read more

Last week we launched a new page in SQLBI website: DAX Puzzle (you can also use www.daxpuzzle.com ). The idea is very simple: we describe a scenario, we ask to solve a problem in that scenario and we might provide some hint to help you finding the solution.  Read more

I am so happy to announce that The Definitive Guide to DAX is finally available! I and Alberto Ferrari spent one year writing this book, and several years collecting the knowledge necessary to do that. The complete title is The Definitive Guide to DAX:  Read more

In the September release of Power BI Desktop, Microsoft introduced a new important feature: calculated tables. Chris Webb wrote a quick introduction to this feature, and Jason Thomas published a longer post about when to use calculated tables . The reason  Read more

If you use SSAS Tabular, this is a very important news! Microsoft released a very important update for Analysis Services 2012 that provides performance improvements to pivot tables connected to an Analysis Services Tabular model: it is SQL Server 2012  Read more