I've tried a few searches and can't find it but it feels like it should exist.
Is there a Codepen style (online playpen) SQL server and GUI client thing? Let's you make a toy database and query it within your browser, and persist the data against an obscure URL.
👤 thehenster Accepted Answer ✓
I found https://www.db-fiddle.com but it doesn't have the GUI element to let you navigate around the tables.