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The Definitive Guide to Power Query (M)

You're reading from The Definitive Guide to Power Query (M) Mastering complex data transformation with Power Query

Product type Paperback

Published in Mar 2024

Publisher Packt

ISBN-13 9781835089729

Length 758 pages

Edition 1st Edition

Languages

Power Query

Tools

Power Query

Concepts

Data Analysis

Authors (3):

Greg Deckler

Melissa de Korte

Rick de Groot

View More author details

Table of Contents (19) Chapters

Preface

1. Introducing M FREE CHAPTER

2. Working with Power Query/M

3. Accessing and Combining Data

4. Understanding Values and Expressions

5. Understanding Data Types

6. Structured Values

7. Conceptualizing M

8. Working with Nested Structures

9. Parameters and Custom Functions

10. Dealing with Dates, Times, and Durations

11. Comparers, Replacers, Combiners, and Splitters

12. Handling Errors and Debugging

13. Iteration and Recursion

14. Troublesome Data Patterns

15. Optimizing Performance

16. Enabling Extensions

17. Other Books You May Enjoy

18. Index

Creating a custom connector

With Visual Studio Code, the Power Query SDK installed, our local environment configured with IIS, and Discord elements created and configured, we can now create a custom connector for Power Query.

The full code for the custom connector for this book is available in the GitHub repository found here: https://github.com/PacktPublishing/The-Definitive-Guide-to-Power-Query-M-/tree/main/Chapter%2016. You can either download the TDGTPQM_Discord.zip file from Chapter 14 in the repository, extract the files, copy and paste the connector folder somewhere on your PC, and then open the folder in Visual Studio Code ( File | Open Folder…), or you can follow along with the rest of this section where we build the connector from scratch.

In either case, you will be well served by reading the code explanations throughout the rest of this section. The rest of this section assumes that you are creating the custom connector from scratch.

The steps to create...

The rest of the chapter is locked

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Authors (3)

Greg Deckler

Greg Deckler

Greg Deckler is a 7-time Microsoft MVP for Data Platform and an active blogger and Power BI community member, having written over 6,000 solutions to community questions. Greg has authored many books on Power BI, including Learn Power BI 1st and 2nd Editions, DAX Cookbook, Power BI Cookbook 2nd Edition and Mastering Power BI 2nd Edition. Greg has also created several external tools for Power BI and regularly posts video content to his YouTube channels, Microsoft Hates Greg and DAX For Humans.

See other products by Greg Deckler

Melissa de Korte

Melissa de Korte

Melissa de Korte's approach to facing challenges is fueled by relentless curiosity. She is a dedicated community member and content creator. Her portfolio includes blogs, tutorials, courses, and webinars, that make Power Query M more accessible and useful for all. Behind her professional persona lies a genuine dedication to empowering others through education and knowledge sharing, and a desire to encourage professionals to embrace the potential of Power Query, M.

See other products by Melissa de Korte

Rick de Groot

Rick de Groot

Rick de Groot was born in the Netherlands and has been working in BI for more than 14 years. He went freelance in 2016 and now works as an independent Power BI consultant. On his mission to make Power BI more accessible, he started two blogs: BI Gorilla and PowerQuery. how, and a YouTube channel sharing Power Query and Power BI content. His commitment to offering free content through multiple platforms has led him to earning the Microsoft Data Platform MVP award for two consecutive years.

See other products by Rick de Groot

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