Observed arrival · 2026-10-01
Query Dojo turns SQL practice into a feedback loop
A browser-based SQL learning site with hands-on challenges, lessons, and practice databases.
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- SQL learners who want browser-based practice
- Worth noticing
- A sample checker flags a missing alias and extra rows separately before accepting the corrected query.
Field notes
Beyond SELECT drills, the visible curriculum includes joins, aggregation, subqueries, window functions, CTEs, indexes, and transactions; the page lists 79 bite-size lessons alongside its challenges. A sample transaction transfers inventory between products, and the site says write exercises use private database copies. Progression is recorded through points, belts, and daily streaks, while the daily challenge is presented as the same for all players.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue