Uploaded April 2026 | Updated September 2026, 2 weeks ago
Join my DAX & Data Modeling Course - products.goodly.co.in/learn-dax-powerbi
Download the Practice Kit ⬇ - goodly.co.in/youre-probably-making-these-4-modeling-mistakes
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I’ve seen this happen way too often…
People start building Power BI reports without thinking about the model first and that’s where things start breaking.
In this video, I’m going to walk you through some of the most common data modeling mistakes in Power BI that I’ve seen over the years, and how you can avoid them.
We’ll talk about things like:
• Why you don’t always need all the rows in your fact table
• How to reduce data size using aggregation (summarization)
• Why too many tables (especially 1:1 relationships) slow down your model
• The problem with multiple fact tables instead of one clean table
• How to decide which columns to keep vs remove
• And most importantly, how to plan your data model before building anything
I’ve been working with Power BI for a long time, and one thing I can tell you is this - a clean model makes everything else easier… DAX, visuals, performance, everything.
If you’re working with Power BI, data modeling, Power Query, or DAX, this video will help you build cleaner and more scalable models.
===== ONLINE COURSES =====
✔️ Grab My Power Query Book -
products.goodly.co.in/power-query-book
✔️ Master 'M' in Power Query -
products.goodly.co.in/learn-m-powerquery/?
✔️ Mastering DAX in Power BI -
products.goodly.co.in/learn-dax-powerbi
✔️ Power Query Course -
products.goodly.co.in/learn-power-query
✔️ Master Excel Step-by-Step-
products.goodly.co.in/learn-excel
===== LINKS 🔗 =====
Blog 📰 - goodly.co.in/blog
Corporate Training 👨🏫 - goodly.co.in/training
Need my help on a Project 💻- goodly.co.in/consulting
Download the Practice Kit ⬇ - goodly.co.in/youre-probably-making-these-4-modeling-mistakes
=====CHAPTERS =====
0:00 - Intro
0:42 - Mistake 1
4:15 - Mistake 2
7:47 - Mistake 3
9:17 - Mistake 4
===== CONTACT 🌐 =====
Twitter - twitter.com/chandeep2786
LinkedIn - linkedin.com/in/chandeepchhabra
Email - goodly.wordpress@gmail.com
===== WHO AM I? =====
A lot of people think that my name is Goodly, it's NOT ;)
My name is Chandeep. Goodly is my full-time venture where I share what I learn about Excel and Power BI.
Please browse around, you'll find a ton of interesting videos that I have created :) Cheers!
Join my DAX & Data Modeling Course - products.goodly.co.in/learn-dax-powerbi
Download the Practice Kit ⬇ - goodly.co.in/youre-probably-making-these-4-modeling-mistakes
Recommended Videos
youtu.be/SmwQuyh3Cz0?si=hC-8NRAMOF9rscNk
youtu.be/II6nNwWB3zY?si=3X7qmlzue8gtO7U2https://youtu.be/II6nNwWB3zY?si=3X7qmlzue8gtO7U2
youtu.be/5G7POgz9K1o?si=wldT11EX4UDkSALz
youtu.be/0ZOY8is-bgY?si=xWA0d8xaM1IB-4-I
I’ve seen this happen way too often…
People start building Power BI reports without thinking about the model first and that’s where things start breaking.
In this video, I’m going to walk you through some of the most common data modeling mistakes in Power BI that I’ve seen over the years, and how you can avoid them.
We’ll talk about things like:
• Why you don’t always need all the rows in your fact table
• How to reduce data size using aggregation (summarization)
• Why too many tables (especially 1:1 relationships) slow down your model
• The problem with multiple fact tables instead of one clean table
• How to decide which columns to keep vs remove
• And most importantly, how to plan your data model before building anything
I’ve been working with Power BI for a long time, and one thing I can tell you is this - a clean model makes everything else easier… DAX, visuals, performance, everything.
If you’re working with Power BI, data modeling, Power Query, or DAX, this video will help you build cleaner and more scalable models.
===== ONLINE COURSES =====
✔️ Grab My Power Query Book -
products.goodly.co.in/power-query-book
✔️ Master 'M' in Power Query -
products.goodly.co.in/learn-m-powerquery/?
✔️ Mastering DAX in Power BI -
products.goodly.co.in/learn-dax-powerbi
✔️ Power Query Course -
products.goodly.co.in/learn-power-query
✔️ Master Excel Step-by-Step-
products.goodly.co.in/learn-excel
===== LINKS 🔗 =====
Blog 📰 - goodly.co.in/blog
Corporate Training 👨🏫 - goodly.co.in/training
Need my help on a Project 💻- goodly.co.in/consulting
Download the Practice Kit ⬇ - goodly.co.in/youre-probably-making-these-4-modeling-mistakes
=====CHAPTERS =====
0:00 - Intro
0:42 - Mistake 1
4:15 - Mistake 2
7:47 - Mistake 3
9:17 - Mistake 4
===== CONTACT 🌐 =====
Twitter - twitter.com/chandeep2786
LinkedIn - linkedin.com/in/chandeepchhabra
Email - goodly.wordpress@gmail.com
===== WHO AM I? =====
A lot of people think that my name is Goodly, it's NOT ;)
My name is Chandeep. Goodly is my full-time venture where I share what I learn about Excel and Power BI.
Please browse around, you'll find a ton of interesting videos that I have created :) Cheers!
