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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

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Product type Paperback
Published in Mar 2024
Publisher Packt
ISBN-13 9781835089729
Length 758 pages
Edition 1st Edition
Languages
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Authors (3):
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Greg Deckler Greg Deckler
Author Profile Icon Greg Deckler
Greg Deckler
Melissa de Korte Melissa de Korte
Author Profile Icon Melissa de Korte
Melissa de Korte
Rick de Groot Rick de Groot
Author Profile Icon Rick de Groot
Rick de Groot
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Table of Contents (19) Chapters Close

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

Introducing structured values

As we delve further into the M language, we arrive at one of the most important concepts: structured values. These values form the foundation of data shaping and manipulation in Power Query M. But what exactly do we mean when we say structured values? You can think of them as a container or package that can contain one or more values. These containers are organized in a way that allows us to perform transformations on them. As a developer, getting a thorough understanding of how to use these values allows you to perform challenging data transformations more easily.

Structured values allow us to deal with complexity by splitting data into manageable chunks. Each structured value – be it a list, record, table, or function – has its unique characteristics and applications, and understanding when to use each helps in writing effective code.

As we go through this chapter, you might find some concepts slightly more challenging than others...

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