Power BI: Understanding M

Enough to make you dangerous.

Jenna Eagleson
Towards Data Science
9 min readNov 5, 2020

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Finger pointing at you.
Dangerously cool. Photo by Samantha Hurley from Burst.

When starting out in Power BI, I struggled to understand the difference between M and DAX and measures vs. calculated columns (if you are in the same boat, this overview might help).

TL;DR: Power Query is what you use in Power BI to load in your dataset and clean and manipulate your data. M is the language used in Power Query. You with me…

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