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QlikView for Developers

You're reading from   QlikView for Developers Design and build scalable and maintainable BI solutions

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Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781786469847
Length 546 pages
Edition 1st Edition
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Authors (2):
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Miguel  Angel Garcia Miguel Angel Garcia
Author Profile Icon Miguel Angel Garcia
Miguel Angel Garcia
Barry Harmsen Barry Harmsen
Author Profile Icon Barry Harmsen
Barry Harmsen
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Toc

Table of Contents (17) Chapters Close

Preface 1. Meet QlikView FREE CHAPTER 2. What's New in QlikView 12? 3. Seeing is Believing 4. Data Sources 5. Data Modeling 6. Styling Up 7. Building Dashboards 8. Scripting 9. Data Modeling Best Practices 10. Basic Data Transformation 11. Advanced Expressions 12. Set Analysis and Point In Time Reporting 13. Advanced Data Transformation 14. More on Visual Design and User Experience 15. Security Index

Chapter 11. Advanced Expressions

The current frontend of our Airline Operations document is made up of charts that use straightforward aggregations, such as a Sum of values in a field. Dashboarding, however, often requires more complex calculations, depending on the nature of the data we are working with and the way some metrics should be calculated. Also, we often need to add certain context to the numbers; for instance, we might need to present the data in terms of relative growth (comparing current year versus last year), or create visualizations in a way that is not exactly "natural", in which case we could use calculated or synthetic dimensions.

In this chapter, we will dive into some of the complexities you can come across when developing a QlikView application. In summary, we will learn:

  • To expand the use of variables
  • To use conditional functions and If expressions
  • To handle advanced aggregations

So let's get to it.

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