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by christophergs 1805 days ago
You can build your own site like this with CourseMaker[1] (disclaimer: I'm the founder). We don't have SQL support yet, but you can create interactive exercises with JS, Python, Go, Rust, C# and Java.

I learned to code through these kinds of sites (codeacademy and code school especially), I think being able to tinker in the browser with no setup is great.

[1] https://coursemaker.org