September 2019
Beginner to intermediate
362 pages
9h 22m
English
Content preview from Learn Power BI
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Understanding DAX
The syntax of DAX is not dissimilar to Excel's function language. In fact, there are a number of functions that are named and work nearly identically to Excel's formula language. However, do not be fooled by these similarities. DAX is an extremely powerful programming language that works very differently to Excel's formula language.
While Excel's formula language is optimized for dealing with cells in a spreadsheet, DAX is optimized to deal with tables of data consisting of columns and rows. Hence, unlike Excel, it is not possible to reference an individual cell within a table. Instead, you use DAX to identity a table and a column and then filter down to a single row or rows.
As mentioned previously, DAX allows for the creation ...
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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.