Intermediate Power Query in Excel

It’s all about customization in this chapter. You’ll learn the fundamentals of M language syntax, and how it underpins every transformation step in query development. You’ll leverage M to create custom conditional columns using logical operators to suit numerous scenarios. You’ll also delve into M table transformation expressions to create custom grouped index columns, enhancing your proficiency in advanced query design.

In this final chapter, you’ll delve into the Power Query Advanced Editor, unraveling M-Language syntax for code modification and debugging. You’ll explore M's built-in functions, and master best practices such as query grouping and dynamic filtering with parameters. Lastly, you’ll elevate your skills by crafting custom M formula language functions, unlocking advanced query design capabilities