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The Definitive Guide to Power Query (M)

You're reading from  The Definitive Guide to Power Query (M)

Product type Book
Published in Mar 2024
Publisher Packt
ISBN-13 9781835089729
Pages 758 pages
Edition 1st Edition
Languages
Authors (3):
Gregory Deckler Gregory Deckler
Profile icon Gregory Deckler
Rick de Groot Rick de Groot
Profile icon Rick de Groot
Melissa de Korte Melissa de Korte
Profile icon Melissa de Korte
View More author details

Table of Contents (19) Chapters

Preface 1. Introducing M 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

Parameters

Parameters in Power Query play an important role in making queries dynamic. Think of them as variables that you can tweak to change the behavior of your queries. As you go through this chapter, you’ll discover how parameters are a useful building block for storing and managing values. We will delve into what they are, how you can create one, and look at where and how to use them.

Understanding parameters

Parameters are placeholders that make it easy to adapt and manage your queries. They allow for the input of scalar values like dates, numbers, or text, without the need to hardcode these values directly into the queries. This design enables you to make external modifications to a single parameter, which then automatically propagates updates across multiple queries or steps within a query.

Typical use cases for using parameters provide flexibility by allowing a user to:

  • Choose a server and database name. This allows users to switch between development...
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