Online SQL Editor
Practice SQL by running real queries against a sample database, right in your browser. JOINs, GROUP BY, subqueries, window functions - all live, no signup, no install. Edit the query and press Run.
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What is this?
A free online SQL editor and practice sandbox. It loads a small sample database - customers, products, and orders - and runs your queries for real using SQLite compiled to WebAssembly. Perfect for practicing JOINs, aggregation, subqueries, and window functions without installing a database.
It runs SQLite in your browser, so the SQL is standard but engine-specific features differ from Postgres/MySQL. For real Postgres and MySQL work - and fixing real broken queries and schemas - use a HeyDevJob cloud workspace.
Frequently asked questions
Is this a free online SQL editor?
Yes - completely free, no signup and no install. Run real SQL against a sample database in your browser.
Can I practice SQL here?
Yes - it ships with a sample customers/products/orders database, so you can practice JOINs, GROUP BY, subqueries, and window functions on real data.
Does it run real SQL?
Yes - it runs SQLite compiled to WebAssembly, so queries execute for real against the in-browser database. Nothing leaves your device.
Want to practice SQL on real Postgres?
HeyDevJob gives you a real Postgres/MySQL database in a live cloud workspace - tune a slow query, fix a broken JOIN, rank rows with window functions. Free to start, every fix lands on your portfolio.
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