August 2019
Intermediate to advanced
768 pages
26h
English
book
Definitive Guide to DAX, The: Business intelligence for Microsoft Power BI, SQL Server Analysis Services, and Excel, 2nd Edition
by Alberto Ferrari, Marco Russo
Content preview from Definitive Guide to DAX, The: Business intelligence for Microsoft Power BI, SQL Server Analysis Services, and Excel, 2nd Edition
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Chapter 5Understanding CALCULATE and CALCULATETABLE
In this chapter we continue our journey in discovering the power of the DAX language with a detailed explanation of a single function: CALCULATE. The same considerations apply for CALCULATETABLE, which evaluates and returns a table instead of a scalar value. For simplicity’s sake, we will refer to CALCULATE in the examples, but remember that CALCULATETABLE displays the same behavior.
CALCULATE is the most important, useful, and complex function in DAX, so it deserves a full chapter. The function itself is simple to learn; it only performs a few tasks. Complexity comes from the fact that CALCULATE and CALCULATETABLE are the only functions in DAX that can create new filter contexts. Thus, although ...
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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.
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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.