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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Insert, update, and delete
Finally, the most common scenario is the one where we fully manage the source by checking for new, modified, or deleted records.
The script will be the same as the one used in the insert and update scenario; however, we must add a join to the source to eliminate from our QVD those records that have been deleted after we saved the QVD file.
The following block of code inserts, updates, and deletes records from the source:
/* I treat my table keys as system fields by hiding them. We do not want to use the keys in the front end and therefore we shouldn't show them. */set HidePrefix='%' ;/* I check if the file exists. If it doesn't I do a full load, if it does I perform the incremental load. */IF IsNull(QvdCreateTime('C:\myQVD\Countries.qvd')) ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.