Unlock the True Power of Your Data with Power Query and M Code
Are you ready to master the data-shaping language at the heart of Excel and Power BI? In The Transformative Magic of M Code in Power Query and Power BI, award-winning author and Excel MVP Mike Girvin demystifies the deceptively simple, yet incredibly powerful M language—giving beginners a clear path to transforming messy, inconsistent data into clean, structured datasets ready for analysis.

Whether you’re a business analyst, accountant, Excel enthusiast, or Power BI pro, this book walks you through step-by-step how to unleash the full potential of Power Query. From learning the basics of M syntax and values, to building custom functions, performing advanced data transformations, and modeling real-world projects—Mike’s signature teaching style makes it easy to follow along, have fun, and truly get it.

Inside, you’ll discover:

A beginner-friendly guide to mastering M Code in Excel, Power BI Desktop, and Dataflows

How to unpivot, join, append, group, and shape data with ease

Ways to write lookup formulas, use recursion, and create reusable custom functions

Real-world projects to consolidate files, fix bad data structures, and build dynamic solutions

A bonus walkthrough on dynamically connecting to SharePoint file systems

With clear examples, downloadable files, and Mike’s decades of teaching expertise, this book will transform how you think about data—and what’s possible with Power Query.

Because great reports start with great data. And great data starts with M.