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The Definitive Guide to Power Query (M)

The Definitive Guide to Power Query (M)

By : Greg Deckler, Rick de Groot, Melissa de Korte
4.8 (39)
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The Definitive Guide to Power Query (M)

The Definitive Guide to Power Query (M)

4.8 (39)
By: Greg Deckler, Rick de Groot, Melissa de Korte

Overview of this book

Data transformation is a critical step in building data models and business intelligence reports. Power Query is an invaluable tool for anyone who wants to master data transformation, and this book will equip you with the knowledge and skills to make the most of it. The Definitive Guide to Power Query (M) will help you build a solid foundation in the Power Query M language. As you progress through the chapters, you'll learn how to use that knowledge to implement advanced concepts and data transformations. This will set the stage for an uncompromisingly thorough exploration of the Power Query M Language. You'll also get to grips with optimizing performance, handling errors, and implementing efficient data processing techniques. As this is a hands-on guide, the practical examples in the chapters will help you gain the skills to apply Power Query to real-world problems and improve your data analysis capabilities. By the end of this book, you will be able to leverage all of Power Query's remarkable capabilities for data transformation.
Table of Contents (19 chapters)
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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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