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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

The standard M function library contains a plethora of functions designed to facilitate data access and retrieval from a wide array of different systems and data storage formats. In addition, the M language also provides functions for combining and joining data together. Practical examples were included throughout this chapter to allow the reader to experiment with and visualize the output from these functions.

In this chapter, we explored data-accessing functions for a variety of file formats, folders, web content, databases, cubes, and standard data protocols such as OData and ODBC. We also covered a variety of binary functions, identity functions, and specialized functions for accessing popular software systems such as Microsoft Exchange and Microsoft SharePoint. Finally, we explored five functions for combining and joining data, including the ability to perform fuzzy matching when joining tables.

In the next chapter, we continue to explore the M language by seeking...

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