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Extreme DAX

You're reading from Extreme DAX

Product type Book

Published in Jan 2022

Publisher Packt

ISBN-13 9781801078511

Pages 470 pages

Edition 1st Edition

Languages

Concepts

Business Intelligence

Authors (2):

Michiel Rozema

Henk Vlootman

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Table of Contents (17) Chapters

Preface

Part I: Introduction

1.1 DAX in Business Intelligence

1.2 Model Design

1.3 Using DAX

1.4 Context and Filtering

Part II: Business cases

2.1 Security with DAX

2.2 Dynamically Changing Visualizations

2.3 Alternative Calendars

2.4 Working with AutoExist

2.5 Intercompany Business

2.6 Exploring the Future: Forecasting and Future Values

2.7 Inventory Analysis

2.8 Personnel Planning

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Index

How to solve the missing workdays problem

The case of the missing workdays is a not-so-exotic situation that appears to bring up rather deep issues. It can happen in any situation where you change the context to calculate something other than what's available in the original context. In other words, whenever you use CALCULATE to change context, you may run into this problem without even noticing it. As filtering and context transformation is core to working with DAX, it is a fundamental issue. And as you may have guessed, it has everything to do with AutoExist.

The root of the problem

Let's take a very close look at the context in the last datapoint in May 2020's order intake chart. We haven't included all report elements in the image, but you can guess that there are a number of filters in this context:

'Calendar'[Year]: 2020
'Calendar'[Month]: May
'Calendar'[Workday in Month]: 21

What we would...

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Authors (2)

Michiel Rozema

Michiel Rozema is one of the world's top Power BI experts, living in the Netherlands. He holds a master's degree in mathematics and has worked in the IT industry for over 25 years as a consultant and manager. Michiel was the data insight lead at Microsoft Netherlands for 8 years, during which time he launched Power BI in the country. He is the author of two Dutch books on Power Pivot and Power BI. Michiel is one of the founders of the Dutch Power BI user group and the organizer of the Power BI Summer School, and has been a speaker at many conferences on Power BI. He has been awarded the Microsoft MVP award since 2019 and, together with fellow MVP Henk Vlootman, runs the consultancy company Quanto, specialists in Power BI.

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Henk Vlootman

Henk Vlootman is a senior global Power Platform, Power BI, and Excel business consultant. Every year since 2013, Henk has received the Microsoft MVP award for his outstanding expertise and community leadership. Henk is one of founders of the Dutch Power BI user group and the organizer of the Power BI Summer School, and has been a speaker at many conferences on Power BI all over the world. He is also the author of two Excel and two Power Pivot / Power BI books. He started his career in 1992 with his own company, then as an Excel consultant. Nowadays he runs the consultancy company Quanto, specialists in Power BI, together with fellow MVP Michiel Rozema.

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