Book Image

QlikView Unlocked

By : Andrew Dove, Roger Stone
Book Image

QlikView Unlocked

By: Andrew Dove, Roger Stone

Overview of this book

QlikView Unlocked will provide you with new insights to get the very best from QlikView. This book will help you to develop skills to work with data efficiently. We will cover all the secrets of unleashing the full power of QlikView, which will enable you to make better use of the tool and create better results for future projects. In the course of this book, we will walk you through techniques and best practices that will enable you to be more productive. You will gain quick insights into the tool with the help of short steps called ”keys,” which will help you discover new features of QlikView. Moving on you will learn new techniques for data visualization, scripting, data modeling, and more. This book will then cover best practices to help you establish an efficient system with improved performance. We will also teach you some tricks that will help you speed up development processes, monitor data with dashboards, and so on. By the end of this book, you will have gained beneficial tips, tricks, and techniques to enhance the overall experience of working with QlikView.
Table of Contents (16 chapters)
QlikView Unlocked
About the Authors
About the Reviewers
Hidden Image List

Avoiding loops in the data model

Loops—or as Qlik calls them, circular references—are to be avoided at all costs as far as QlikView is concerned.


When creating a data model, it can be very easy to create circular references as you add in all your tables. As QlikView cannot handle these in its selection engine, they must be avoided. However, should your data model have them, QlikView "loosely couples" some of the offending tables. This means that the loosely coupled tables will not be restricted in any selection.

How to do it

Sometimes, having performed a reload of your data, you would get the following message:

This indicates that QlikView has detected a circular reference and has loosely coupled some tables in the data model.

If you view your table structure (Ctrl+T), you will notice that there are some dashed lines connecting at least one table; this is where the circular reference has been detected and needs your attention.

In many cases, including the preceding one, circular references...