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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 have learned the multi-faceted approach required to optimize performance in Power Query. We have delved into areas such as the effective use of query folding and strategies for navigating the formula firewall. The difference between buffering and streaming operations, along with the careful use of buffer functions and the importance of reducing memory usage in your queries, were important areas of focus.

Key to this chapter is the understanding that the careful management of memory aspects helps improve query performance. By integrating these concepts and approaches, you are now equipped with a comprehensive understanding of the various elements that contribute to the performance optimization of your Power Query operations.

In the following chapter, we will focus on working with extensions. You’ll learn the fundamental concepts required to create a custom connector and what tools are involved in the process.

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