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Power Query Cookbook

You're reading from Power Query Cookbook

Product type Book

Published in Oct 2021

Publisher Packt

ISBN-13 9781800569485

Pages 412 pages

Edition 1st Edition

Languages

Concepts

Author (1):

Andrea Janicijevic

Table of Contents (12) Chapters

Preface

1. Chapter 1: Getting Started with Power Query

2. Chapter 2: Connecting to Fetch Data

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

Folding queries

You often connect to relational sources, and it is important to know how to leverage query folding in order to retrieve data from the sources with Power Query steps that act as a single query statement. Query folding helps us to push more steps toward the origin data source in order to reduce the number of steps processed by the Power Query engine.

In this recipe, you will see how to perform query folding and how to control it.

Getting ready

In this recipe, you need to connect to an Azure SQL database that you can recreate in your environment with the Adventureworks.bacpac file.

How to do it…

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

Click on Get data and then More… to access the Get Data window and see the complete list of connectors.
Figure 6.35 – Power BI connectors
Browse to the Azure SQL database connector, select it, and click on Connect.
Figure 6.36 – Azure...

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Authors (1)

Andrea Janicijevic

Andrea Janicijevic is a cloud solution architect and works in the world of analytics and business intelligence, constantly expanding her knowledge in the field of data. From the outset, she has been working on analytics platforms, helping clients to better adopt cloud technology across a wide range of industries and company sizes. She studied economics and management of innovation and technology at Bocconi University in Milan and during her studies, she started working at Microsoft in 2018. She began working with the Microsoft analytics platform, including Power BI, becoming a trusted technical advisor for business and technical users. She later started collaborating with Packt, accepting the challenge of sharing her experience with Power Query.

See other products by Andrea Janicijevic

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