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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

Combining data

Although the process of extracting and combining data may seem straightforward at a glance, it can quickly turn into a complex and demanding task. The level of complexity largely depends on the characteristics of the data and its organization. From the perspective of this section, it’s important to understand that by combining data we mean an append operation, typically seen when consolidating files.

In the real world, data often originates from various sources and is managed by multiple users, which complicates maintaining consistency across all files. Excel workbooks, in particular, is a very common format, as Excel is used extensively across many industries for numerous data-related tasks.

In this section, we’ll delve into techniques and strategies to overcome challenges commonly faced when working with multiple Excel files. While some are specific to the nature of Excel, others are more generic and applicable across different scenarios.

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