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Microsoft Power BI Quick Start Guide

You're reading from   Microsoft Power BI Quick Start Guide The ultimate beginner's guide to data modeling, visualization, digital storytelling, and more

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Product type Paperback
Published in Nov 2022
Publisher Packt
ISBN-13 9781804613498
Length 330 pages
Edition 3rd Edition
Languages
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Authors (4):
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Mitchell Pearson Mitchell Pearson
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Mitchell Pearson
Devin Knight Devin Knight
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Devin Knight
Bradley Schacht Bradley Schacht
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Bradley Schacht
Erin Ostrowsky Erin Ostrowsky
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Erin Ostrowsky
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Table of Contents (13) Chapters Close

Preface 1. Gaining Data Literacy with Power BI 2. Connecting to Data FREE CHAPTER 3. Data Transformation Strategies 4. Building the Data Model 5. Leveraging DAX 6. Visualizing Data 7. Digital Storytelling with Power BI 8. Using a Cloud Deployment with the Power BI Service 9. Data Cleansing in the Cloud with Dataflows 10. On-Premises Solutions with Power BI Report Server 11. Other Books You May Enjoy
12. Index

Building calculated columns

In this section, you will learn how to create calculated columns in Power BI using DAX. The building of calculated columns is a great way of extending the analytical capability of Power BI and by the end of this chapter, you will feel very comfortable with creating new columns through DAX. The writing of calculated columns logically occurs after the data model has been developed, therefore, in order to follow along with this section, you will need to open the pbix file Chapter 5 Leveraging DAX.pbix from the Microsoft-Power-BI-Start-Guide-Second-Edition-main\Starting Examples directory.

Calculated columns are stored in the table in which they are assigned, and the values are static until the data is refreshed. You will learn more about refreshing data in a later chapter.

There are many use cases for calculated columns, but the two most common are as follows:

  • Descriptive attributes
  • Concatenated key columns

Now you...

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