Book Image

QlikView Essentials

By : Chandraish Sinha
Book Image

QlikView Essentials

By: Chandraish Sinha

Overview of this book

This guide demonstrates just how easy it is to get started with QlikView and create your own BI application. Featuring an introduction to its core features before exploring how to load data and model it, you’ll soon become more confident that you can take full advantage of QlikView’s capabilities.. You will also learn how to use QVD files with QlikView – and how they offer a simpler way of handling data. After digging deeper into data handling, as you learn how to use mapping tables and create a master calendar, you’ll then find out how to get the most from QlikView’s visualization features – vital if you are to use your data insights effectively. From accessible and user friendly dashboards to strategies and best practices for subjecting data to further analysis, you can be confident that you’ll be prepared to get the most out of your data with QlikView. With details on how to finally secure your application and deploy it for a successful integration in your organization, QlikView Essentials underlines exactly why QlikView is becoming more and more popular for businesses that understand the value of data.
Table of Contents (15 chapters)
QlikView Essentials
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Variables in QlikView


Variables are used to store static values or expressions. Variables make it easy to reuse expressions.

In QlikView, variables can be declared in the script or by invoking Variable Overview by pressing Ctrl + Alt +V. It can also be declared by navigating to Settings from menu and clicking on Variable Overview. Variables declared in the script can be seen in Variable Overview too.

In the script, variables are declared using Set and Let statements.

The Set statement assign literal strings to the variable, and the Let statement first evaluates the string and then assigns it to a variable:

Set vVariable1 =  1 +  3;  //Value of vVariable1 is 1  + 3
Let vVariable2 =   1  + 3;  //Value of vVariable2 is 4

It is important to discuss "dollar sign expansion" while discussing variables. Dollar sign expansions are definitions of text replacement. $(text) syntax expands the text that is between the $ sign and the parenthesis, and then it is evaluated. So an expression such as $(=1+3) will...