User-Defined Functions
in Power BI
The Next Level of DAX
Stop writing the same DAX logic over and over.
Build a complete library of reusable DAX functions while developing a full report from scratch.
Every visual in this report
is powered by UDFs
you build in the course.
The CloudFlow Analytics report is your hand-on canvas.
A real, production-quality Finance Dashboard built entirely with UDFs you write from scratch.
End result? A complete library of reusable DAX functions -
time intelligence, forecasting, Pareto, ranking, SVG visuals and a full report.
Who This Is For
This course is built for Power BI developers who already know DAX and want to write it at a higher level: cleaner, faster, and built to scale.
You're comfortable writing DAX but feel like you're solving the same problems over and over in every new project.
You've heard about UDFs but haven't had a structured way to learn them properly, or aren't sure how far they can go.
You work on teams where consistency matters and you're tired of logic drifting across models and developers.
You want to leave behind models that are maintainable, shareable, and don't depend entirely on you to run.
You're serious about operating at a senior level and you know that means thinking in systems, not just measures.
This is probably not for you if
- You're new to DAX. Get confident with the fundamentals first before coming back to this.
- You're looking for a broad Power BI survey course. This one goes deep on one specific capability.
- You work solo on one-off reports with no reuse requirements. The payoff here is in scale.
Full Course Curriculum
01. Getting Started with UDFs
- Welcome
- Files
- Website Cloud Flow Analytics
- Intro to User Defined Functions (UDFs)
- Your first UDF
- Building and sharing Your Own UDF Library
- UDF parameters
- Parameter types and modes
- Taking care of context transition
- Making UDFs broadly applicable
- Calling a UDF in another UDF
- Adding comments
- UDFs that return tables
- Debugging UDFs
- YTD and running totals
- Pareto
- ABC Classification and Segmentation
- Ranking
- Forecasting
- Coming soon, included with enrollment
I've spent a decade building Power BI solutions for enterprise clients worldwide, and sharing everything I learn with a community of 1M+ developers across YouTube, LinkedIn, Instagram, and TikTok. UDFs are a fundamental shift in how DAX works.
course gives you my best practices and the mistakes to avoid, things that take a lot of trial and error to figure out on your own. My goal is to make it click for you, the same way it has for many of the Power BI developers I've worked with.