FILTER & SUMX Explained Deeply 🔥 | Power BI DAX Iterator Functions Full Guide
In this video, we’ll deeply explore FILTER and Iterator Functions in Power BI DAX with practical understanding. You’ll learn how FILTER creates complex filter context, how iterator functions loop through rows, and why SUMX is different from SUM in real business scenarios.
We’ll break down concepts like Row Context vs Filter Context, table filtering logic, nested calculations, and performance considerations. If you want to master DAX calculations and build advanced Power BI reports, this session will give you complete clarity.
This tutorial is part of our Power BI DAX Learning Series, so make sure to check the full playlist to understand every concept step-by-step.
00:00 — Introduction & Video Overview
01:05 — What is FILTER Function in DAX
02:10 — FILTER Syntax Explained
03:20 — How FILTER Creates New Filter Context
04:00 — Real Example Using FILTER
05:15 — Performance Considerations of FILTER
06:10 — What are Iterator Functions (X Functions)
07:00 — SUMX Syntax & Working
08:20 — How Iterators Create Row Context
09:10 — SUM vs SUMX — Core Difference
10:30 — Practical Business Use Case
11:10 — FILTER + SUMX Combined Example
12:00 — Assignment Walkthrough
13:40 — Solution Explanation
14:00 — Best Practices & Optimization Tips
15:10 — Final Summary
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