Your friendly SQL learning companion! SQL Boy helps you learn SQL with interactive tutorials, real-time visualizations, and instant feedback. No installation required - everything runs in your browser with complete privacy.
Our comprehensive platform combines interactive tutorials, powerful developer tools, and visual learning aids to help you master SQL from basics to advanced concepts.
Learn SQL through 15 hands-on lessons covering SELECT statements, JOINs, aggregations, subqueries, and window functions. Each lesson includes real-time validation and instant feedback to help you learn faster and retain knowledge better.
Start LearningUnderstand complex SQL concepts with interactive visualizations. See how queries are parsed with AST views, explore execution plans, and watch animated JOIN operations. Visual learning makes difficult concepts easier to grasp and remember.
Explore VisualsProfessional SQL tools for everyday development work. Format queries for readability, minify SQL for production, and validate syntax across multiple database dialects including MySQL, PostgreSQL, SQLite, and MariaDB.
Try ToolsSQL Playground runs entirely in your browser using WebAssembly technology. All SQL execution happens locally on your device - your data never leaves your computer. No server-side processing, no data collection, no tracking. Practice with confidence knowing your queries and data remain completely private and secure.
SQLite WASM runs directly in your browser with zero server communication
We don't collect, store, or transmit any of your queries or practice data
Once loaded, you can practice SQL even without an internet connection
When learning SQL, you might want to practice with real data structures from your work or personal projects. With SQL Playground, you can safely upload and query your own CSV files without worrying about data leaks or privacy violations.
Your learning progress is saved locally in your browser's storage, giving you full control over your data. No accounts, no sign-ups, no compromises on privacy.
Join thousands of learners who have improved their SQL skills with our interactive platform. Start your journey today - it's completely free!
Begin Your SQL Journey