QueryCase

Learn SQL by solving detective mystery cases

10 followers

Learn SQL by solving detective mystery cases

10 followers

QueryCase teaches SQL through detective investigations, not exercises. Chief Fox briefs you on a case, you get a real database, and you write real SQL to crack it. The JOIN matters when a suspect has an alibi. 54 cases · Five detective ranks · Timed exams · Shareable certificates Free Sandbox: IMDB, Spotify, NBA, Steam, Pokémon data Investigations mode: no hints, countdown timer Runs entirely in the browser - nothing to install Rookie Detective path is completely free to try out!

Free Options

Launch tags:Developer Tools•Data & Analytics•Online Learning

Launch Team

Framer AI AgentsDesign and publish professional sites with AI

Promoted

Maker

📌

Hey Product Hunt 👋 I've spent seven years as a data analyst watching people try to learn SQL the same way - filter a fake employees table, get a result, close the tab, forget everything by Thursday. The problem isn't SQL. It's that there's never a reason to care about the answer. QueryCase fixes that. You're a detective. Chief Fox briefs you on a case. You write real SQL to solve it. The JOIN matters when a suspect has an alibi. The query has a purpose. Since launching just under three weeks ago: 350+ signups, 1500+ cases completed, and people have been reaching Senior Detective level within days of starting from zero. What's live today: - 54 cases from basic SELECT through to window functions and CTEs - Duolingo-style drills between cases to reinforce concepts - Five detective ranks with timed exams and shareable certificates - Leaderboards and unlockable titles as you progress - Free Sandbox with IMDB, Spotify, NBA, Steam, Pokémon and more to query freely - Timed Investigations mode — no hints, just you and the evidence - Runs entirely in the browser via DuckDB WASM, no setup required Coming next week: Career Hub with FAANG-style SQL interview questions built around real company patterns. The longer goal is to make QueryCase the centralised SQL platform for everyone; new learners, career switchers, and experienced analysts who want to stay sharp. Rookie path is completely free. Happy to answer anything - the DuckDB implementation, the gamification decisions, anything about the build.

Report

2mo ago

Found info about this app on Reddit. Just completed the Rookie Detective Level. The lessons are logical and help make the information "stick". I plan to purchase the Pro and try to complete all 54 levels. I have not looked at the interview questions or played in the sandbox yet.

Report

1mo ago

Maker

@deirdreb007 Thank you so much, Deirdre! That genuinely means a lot to hear. 😊

I'm really glad you enjoyed the Rookie Detective level and that the format helped the concepts stick; that's exactly what I was hoping to achieve when I started building QueryCase.

I hope you enjoy the rest of the cases, and I'd love to hear what you think of the Sandbox and Careers Hub when you get a chance to try them.

I'm still actively building and improving the platform, so if you have any feedback or ideas, I'd genuinely love to hear them. Thanks again for taking the time to try it and leave such a thoughtful comment! 🚀

Report

1mo ago

Reviews