Public SQL database for educational purposes

Question

I am looking for a publicly available SQL database with free access, where one can run some SELECT queries for free on some meaningful data (not item1, item2, item3

Answer 1

You can use https://db4free.net/ which allows you to access it remotely from your code or tools like JMeter.

It's slow but works.

it requires registration.

Answer 2

Try SQL Exercises

Start with learning stage