SUM vs SUMX Finally Explained! The Difference Everyone Gets Wrong
Welcome to Power BI DAX Series Episode 4!
In this video, you'll learn the difference between SUM() and SUMX() in Power BI DAX. These are two of the most commonly used DAX functions, but many developers get confused about when to use SUM and when to use SUMX.
In this tutorial, I explain both functions with practical examples, business scenarios, performance tips, and interview questions.
📌 Topics Covered:
✔ What is SUM() in Power BI
✔ What is SUMX() in Power BI
✔ Difference between SUM and SUMX
✔ Iterator Functions Explained
✔ Revenue Calculation Example
✔ Performance Comparison
✔ Real Business Use Cases
✔ Power BI Interview Questions
Whether you're a beginner or an experienced Power BI developer, understanding SUMX is essential for creating advanced DAX measures.
🎯 Power BI DAX Series:
Episode 1 – Introduction to DAX
Episode 2 – Calculated Columns
Episode 3 – Measures
Episode 4 – SUM vs SUMX
💬 Let me know in the comments which DAX function you'd like to learn next.
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