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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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Toc

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

Summary

In this chapter, we explored lists, records, and tables, showing how important they are when you’re using the M language.

We learned that structured values serve as containers holding one or more primitive or structured values. Learning about them is useful in many different areas. For instance, lists and records are often used to provide multiple items in function arguments and they help in simplifying your code by using them. Record structures are also great structures in which you can create variables.

We also investigated how to access items from the different structured values through selection and projection, enabling you to easily extract values. You will find that these skills help you understand code created by the user interface, but also help you create shorter code yourself.

We then looked at the creation of these values and how operators work on them. You also learned about complex data types, highlighting their importance and how to assign...

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