January 2016
Beginner to intermediate
166 pages
3h 18m
English
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Concatenation
Another way to optimize your data model in QlikView is through concatenation.
Concatenation is a way to combine or merge tables. It is similar to Union All in SQL. It appends rows from one table to another. The result of concatenation between two tables (Table1 and Table2, for example) is that a new table contains the sum of the numbers of records in Table1 and Table2. Concatenate is used when you have two fact tables in your data model. Two fact tables are not good for your data model. You can combine them using concatenate or link tables. Link tables are explained in the next chapter.
Concatenate is also useful when you have to combine two tables with similar structures. Say, for example, your organization has an Employee table that ...
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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.