Solve it in your browser. Share your time. Come back next week. 136 challenges in rotation, picked deterministically each week — same challenge for everyone, no leaderboard gaming.
A merchandising dashboard wants product categories with more than 10 orders. Show category and order_count. Group by category, filter with **HAVING COUNT(*) > 10**. Order by order_count descending. Classic Easy HAVING: group, count, thresh…
Past challenges are still solvable in the app. Each week's pick is deterministic, so anyone visiting that week sees the same challenge — fair time comparisons.
Practicing SQL works the way going to the gym works: a small, predictable habit beats heroic sprints. 15 minutes every Monday for a year is enough to clear most data-analyst SQL interviews. A scattered hour-here-and-there approach plateaus around month 2.
The Weekly Challenge is the ritual. Same time every week, fresh problem, no decision fatigue. Solve it, share it if you want to, come back Monday. The 299-challenge practice bank is here when you want unlimited; the weekly is for when you want a single committed rep.
SQL Quest's free tier covers every Easy and Medium challenge plus 6 Hard previews, and the AI Coach with a daily quota.
Open SQL Quest — Free ⚡Or: learn SQL from zero · interview prep hub · tutorials blog