March 2018
Beginner to intermediate
638 pages
16h 29m
English
Content preview from Mastering Microsoft Power BI
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Optimized DAX functions
If the allow unrestricted measures for DirectQuery mode setting is enabled in Power BI Desktop, all DAX functions can be used in measures. However, only certain DAX functions are natively converted to SQL expressions for execution by the source system. The list of these optimized functions is available in the MS documentation: http://bit.ly/2oK8QXB. To the greatest extent possible, dataset designers should ensure that optimized functions are leveraged in measures and that non-optimized functions are only used on small, pre-filtered or aggregated query results.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.