All labs · 🗃️ SQL Lab

Ask a database questions

A real SQL database runs in your browser, with a school and a shop inside. SELECT, filter, sort, summarise and JOIN tables – the language behind almost every app and website.

👋 Free demo: try the first 2 lessons and the first tool. Subscribe to unlock everything here and in all the other labs – USD 10 a month (USD 100 a year), or included with lessons. ✨ Subscribe Log in

🗺️ The tables (the ones your query uses light up · 🔑 = id · → points to another table)