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Mastering QlikView

Mastering QlikView

By : Stephen Redmond
4.5 (10)
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Mastering QlikView

Mastering QlikView

4.5 (10)
By: Stephen Redmond

Overview of this book

If you are a business application developer or a system analyst who has learned QlikView and Qlik Sense and now want to take your learning to a higher level, then this book is for you. It is assumed that you are aware of the fundamentals of QlikView and have working knowledge of development and in-memory analytics.
Table of Contents (9 chapters)
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8
Index

Using control structures


Any basic development language will include some control structures to either repeat the execution of particular tasks or change what task will happen next based on conditions. QlikView is no different, so in this section we will examine the various options.

Branching with conditional statements

It can be enormously important to be able to execute different sets of statements based on different conditions. It gives us a lot of flexibility in implementing our solutions.

If … Then … ElseIf

If ... Then ... ElseIf is a fairly fundamental construct in many programming languages. We test a condition, and if it is true, we execute one set of statements. If it isn't true, then we can either execute a different set of statements or perform a new test and keep going.

As an example, if we wanted to test whether a file exists before trying to load it:

If Alt(FileSize('c:\temp\Data.qvd'),0)>0 Then

  Data:
  Load *
  From c:\temp\Data.qvd (qvd);

End if

Note

We use Alt here because...

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Mastering QlikView
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