Tableau Tutorial: How to Use the Custom SQL option for Cleaner, Faster, and Smarter Data Sources
Unlock one of the most overlooked features in Tableau! In this Tableau Tutorial, you’ll learn how to use the New Custom SQL option on the Data Source page to take full control of your data before it ever reaches your worksheet.
Whether you want to join tables more efficiently, pre-filter your data, improve performance, or clean complex datasets, Custom SQL lets you shape exactly what Tableau reads — giving you a faster, cleaner, and more flexible data foundation.
In this video, you’ll learn:
Where to find the New Custom SQL option and how it works
Three potential use cases
Once you start using Custom SQL, you'll wonder how you survived without it. Let’s dive in!
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