Author

Mireia

Author and maintainer of powerbitutorials.com. Every tutorial on this site is written and reviewed by the same person.

What I write about

The articles here concentrate on the mechanisms underneath the clicks: how filter context and context transition actually work, why a star schema makes DAX shorter, and which Power Query steps quietly break query folding. Those are the places where copying a formula from a forum answer stops working as soon as your model changes shape.

How I work

• Every DAX and Power Query snippet is run against a sample model in Power BI Desktop before it is published. If it does not return the stated result, it does not ship.
• Version-dependent behaviour is stated explicitly and linked to the Microsoft documentation so you can check it against your own build.
• When a feature is renamed, deprecated or superseded, the article is revised and its review date is updated rather than left to drift.

Corrections and topic requests

If a formula fails on your model, or a step assumes something you don't have, that is a bug in the article — send it over and it gets fixed. Topic requests are read too; the queue is driven by what readers keep getting stuck on.