Book Image

QlikView for Developers

By : Miguel Angel Garcia, Barry Harmsen
Book Image

QlikView for Developers

By: Miguel Angel Garcia, Barry Harmsen

Overview of this book

QlikView is one of the most flexible and powerful Business Intelligence platforms around. If you want to build data into your organization, build it around QlikView. Don't get caught in the gap between data and knowledge – find out how QlikView can help you unlock insights and data potential with ease. Whether you're new to QlikView or want to get up to speed with the features and functionality of QlikView, this book starts at a basic level and delves more deeply to demonstrate how to make QlikView work for you, and make it meet the needs of your organization. Using a real-world use-case to highlight the extensive impact of effective business analytics, this book might well be your silver bullet for success. A superb hands-on guide to get you started by exploring the fundamentals of QlikView before learning how to successfully implement it, technically and strategically. You'll learn valuable tips, tricks, and insightful information on loading different types of data into QlikView, and how to model it effectively. You will also learn how to write useful scripts for QlikView to handle potentially complex data transformations in a way that is simple and elegant. From ensuring consistency and clarity in your data models, to techniques for managing expressions using variables, this book makes sure that your QlikView projects are organized in a way that's most productive for you and key stakeholders.
Table of Contents (24 chapters)
QlikView for Developers
Credits
About the Authors
Acknowledgements
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

Using the TOTAL qualifier


The TOTAL qualifier is added to aggregation functions to disregard chart dimensions and make the calculation over the entire record set as defined by the current selection state.

In a previous section, we calculated the percentage of FTEs each carrier performs relative to the total number of FTEs and we used a variable (vTotalFTEs) to store the divisor value. Instead of using a variable, the same calculation can be made using the following expression:

Sum([# Equivalent FTEs]) / Sum(TOTAL [# Equivalent FTEs])

When the preceding expression is used in a straight table with Carrier Name as the dimension, the numerator will calculate the value corresponding to each carrier, which will be different on each row of the table. The divisor will calculate the total number of flights made by all carriers, which will be the same for all rows of the table, therefore disregarding the dimension value.

Additional modifiers can be used along with the TOTAL qualifier to disregard only...