March 2018
Beginner to intermediate
514 pages
13h 11m
English
book
Mastering Qlik Sense
by Ralf Becher, Karl Pover, Jason Michaelides, Dilyana Ivanova, David Alcobero, Martin Mahler, Juan Ignacio Vitantonio
Content preview from Mastering Qlik Sense
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Identifiers
Identifiers define the relationship between the set expression and the field values or expression being evaluated.
The following values can be used as identifiers:
| Identifier | Description |
| 1 | Represents the full set of all the records in the application, irrespective of any selections made. This means the whole data model. |
| $ | Represents the records of the current selection. The set expression {$} is thus the equivalent to not stating a set expression. For example: sum({$} [Product Value]) is the same as sum([Product Value]). |
| $n | Represents the n previous selections. Example: count ({$1} [User Id]) disregards the current selection made by the user and instead counts the [User Id] in the user's previous selection. |
| $_1 | Represents ... |
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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.