DAX Studio DAX is the function and query language of PowerPivot and PowerBI. It has been around for a while, but it didn’t really have many editing tools until DAX Studio came around. DAX Studio has been created by the SQLBI.com guys – the legends in PowerBI. I saw a demo today at the Perth Modern Excel User Group at Microsoft Perth – its great. Whilst it is a powerful editor, it is not just a code editor. There are lots of options to allow you to optimise your DAX code. Lots of output options as well. You can test and see how long it takes to run your DAX commands. If you regularly use DAX in Power BI or PowerPivot then DAX Studio is a must have.