Power BI’s Hottest Upgrade - Developer Mode with TMDL
Proposed session for SQLBits 2026TL; DR
Learn how TMDL and Power BI Developer Mode transform model development: bulk edit tables and measures, refactor DAX at scale, manage security and perspectives, and deploy targeted changes faster with practical tips you can use immediately.
Session Details
Power BI development just got a significant upgrade, and it's about to change the way you work.
Imagine bulk-copying entire tables and measures between models in seconds. Renaming dozens of measures or applying find-and-replace logic across your DAX all at once. Or creating perspectives and implementing object-level security without ever leaving Power BI Desktop. Now, imagine publishing changes to measures and tables without having to republish the entire PBIX file. It's not a fantasy, it's TMDL.
Welcome to the Power BI developer mode, we've all been waiting for. With TMDL (Tabular Model Definition Language) and the sleek power of Fabric Studio, you'll unlock a new level of productivity, precision, and control.
In this session, you'll learn how to:
✅ Differentiate between TMDL and TMDL scripts
✅ Accelerate your Power BI workflow with real-world TMDL techniques and tips
✅ Edit and manage models with surgical precision using Fabric Studio
Whether you're a seasoned developer or just diving into Power BI's modeling layer, this session will equip you with tools and tips to transform the way you build.
Say goodbye to repetitive tasks and hello to true freedom in Power BI development.
Imagine bulk-copying entire tables and measures between models in seconds. Renaming dozens of measures or applying find-and-replace logic across your DAX all at once. Or creating perspectives and implementing object-level security without ever leaving Power BI Desktop. Now, imagine publishing changes to measures and tables without having to republish the entire PBIX file. It's not a fantasy, it's TMDL.
Welcome to the Power BI developer mode, we've all been waiting for. With TMDL (Tabular Model Definition Language) and the sleek power of Fabric Studio, you'll unlock a new level of productivity, precision, and control.
In this session, you'll learn how to:
✅ Differentiate between TMDL and TMDL scripts
✅ Accelerate your Power BI workflow with real-world TMDL techniques and tips
✅ Edit and manage models with surgical precision using Fabric Studio
Whether you're a seasoned developer or just diving into Power BI's modeling layer, this session will equip you with tools and tips to transform the way you build.
Say goodbye to repetitive tasks and hello to true freedom in Power BI development.
3 things you'll get out of this session
How to use TMDL to bulk edit tables, measures, and DAX safely and efficiently
When to use TMDL vs. TMDL scripts in real-world scenarios
How Developer Mode and Fabric Studio speed up model changes without republishing PBIX
Practical techniques to reduce repetitive Power BI modeling work
Speakers
Dhyan Rathore's other proposed sessions for 2026
Power BI Beyond Read-Only: Writebacks and Automation with Fabric User Data Functions - 2026
Power BI on a diet: 5 TIPS to slim down your semantic models - 2026