About
Making SQL clearer, practical and accessible.
SQL.tn helps students, analysts and professionals develop their SQL skills step by step.
Our mission
Turn abstract concepts into business questions, readable queries and useful feedback, from first discovery to complete projects.
Our approach
Every concept connects to a concrete situation, a query to write and a result to understand. Explanations stay focused and hands-on work starts quickly.
Our principles
- Explain before adding complexity.
- Practise with fictional data.
- Point out differences between dialects.
- State clearly which features are available.
- Publish only reviewed and verified content.
Learn without installing anything
The SQL environment runs directly in your browser with fictional data, so you can focus on queries and their results.