Why Your Power BI Totals Are WRONG

It's one of the most common and frustrating problems in Power BI: your DAX measure calculates perfectly for every single row, so why are your Power BI totals WRONG? If you've ever stared at a table where the math just doesn't add up, you've landed on the right video.
In this in-depth tutorial, Pragmatic Works expert Mitchell Pearson demystifies this core DAX challenge. You'll learn that the "total" row isn't a simple sum—it's your measure being re-evaluated in a completely different Filter Context. Understanding this concept is the key to mastering DAX.
We'll walk you through the exact DAX pattern to solve this issue for good. By using powerful iterator functions like SUMX in combination with context-aware functions like HASONEVALUE, you can force Power BI to perform the correct calculation row-by-row and then aggregate the results, giving you accurate grand totals every time.

⏰TIMESTAMPED GUIDE:
🕒0:00 - The Problem: Why Power BI Totals Are Wrong
🕒0:51 - Understanding the Simple Data Model and Measures
🕒1:35 - Seeing the "Wrong Total" in Action with an IF Statement
🕒4:09 - The Theory: A Deep Dive into DAX Filter Context
🕒5:30 - Solution Part 1: Using HASONEVALUE to Detect the Total Row
🕒8:10 - The Final Pattern: Combining SUMX and SUMMARIZE for a Perfect Total
🕒12:31 - Get Expert Help with Pragmatic Works Mentoring

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