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Power Query Cookbook

You're reading from   Power Query Cookbook Use effective and powerful queries in Power BI Desktop and Dataflows to prepare and transform your data

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Product type Paperback
Published in Oct 2021
Publisher Packt
ISBN-13 9781800569485
Length 412 pages
Edition 1st Edition
Languages
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Author (1):
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Andrea Janicijevic Andrea Janicijevic
Author Profile Icon Andrea Janicijevic
Andrea Janicijevic
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Table of Contents (12) Chapters Close

Preface 1. Chapter 1: Getting Started with Power Query 2. Chapter 2: Connecting to Fetch Data FREE CHAPTER 3. Chapter 3: Data Exploration in Power Query 4. Chapter 4: Reshaping Your Data 5. Chapter 5: Combining Queries for Efficiency 6. Chapter 6: Optimizing Power Query Performance 7. Chapter 7: Leveraging the M Language 8. Chapter 8: Adding Value to Your Data 9. Chapter 9: Performance Tuning with Power BI Dataflows 10. Chapter 10: Implementing Query Diagnostics 11. Other Books You May Enjoy

Appending queries

Within a single table, you often need to have data coming from different files/tables. You need to append data and have a unique view that will allow you to run more complex analyses. In this recipe, you will see how you can append data in Power Query with just a few clicks.

Getting ready

For this recipe, you need to download the following files:

  • FactInternetSales CSV file
  • FactResellerSales CSV file

In this example, we will refer to the C:\Data folder.

How to do it…

Once you open your Power BI Desktop application, you are ready to perform the following steps:

  1. Click on Get Data and select the Text/CSV connector.
  2. Browse to your local folder where you downloaded the two CSV files (FactInternetSales and FactResellerSales) and load them into the Power Query view:
    Figure 5.20 – Queries pane

    Figure 5.20 – Queries pane

  3. Select the FactInternetSales query, browse to the Add Column tab, and click on Custom Column:
    Figure 5.21 – Custom Column button

    Figure 5.21 – Custom...

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