LearnSQL is a website made for you to experiment and learn about SQL databases by trying out various commands. It's based on the widely used SQLite database system which is used a wide variety of applications.
At the moment, it's just a simple prompt with an interface for viewing database contents. However I want to add integrated tutorials for users to step through so they can get familiar with how relational databases, and the syntax for retrieving information works.
Under the hood, LearnSQL uses sql.js which is effectively SQLite compiled for WebAssembly.