SQLZoo
SQLZoo: A focused, free environment for structured SQL practice and learning. Ranked #17 of 30 in Coding Challenge Platforms by our editors (7.6/10); pricing: Free plan; best for structured SQL learning practice.
At a glance
- Editor score7.6 / 10
- PricingFree plan
- Best forStructured SQL learning practice
- Free planYes
- Paid fromFree
- Primary usePractice
- Facts checked22 Sep 2026
Where it wins
- Step-by-step tutorials with interactive query execution
- Immediate feedback, quizzes, references, and graded assessments
- Practice across SQL Server, Oracle, MySQL, DB2, and more
Where it doesn't
- Focused on SQL rather than general coding challenges
- Available through the web platform only
- Designed for learning rather than company assessments
Our verdict on SQLZoo
SQLZoo is a free, web-based learning environment for people building SQL skills through structured practice. Its tutorials cover querying, filtering, aggregation, joins, subqueries, NULL handling, window functions, database creation, and related topics. Learners work with sample databases, submit queries, and receive immediate feedback. The platform also serves educational settings, including classroom use, making it a fit for independent learners and instructors who want guided SQL exercises rather than a broad coding challenge catalog.
The learning path combines step-by-step lessons with multiple-choice quizzes, SQL reference materials, and graded assessments containing easy, medium, and hard questions. That mix gives beginners a clear progression while providing more demanding exercises for learners who want to check their understanding. Database creation and DDL tutorials add coverage beyond querying existing tables. SQLZoo also supports SQL Server, Oracle, MySQL, DB2, Mimer, PostgreSQL, SQLite, and Access, which helps learners compare syntax and practice in environments relevant to different courses or workplaces.
SQLZoo’s free model keeps the focus on accessible practice, without a paid tier structure to evaluate. Its main limitation is scope: the experience is centered on SQL learning, not general-purpose programming, interview preparation across multiple languages, or employer-facing coding assessments. Choose it for guided SQL study, interactive exercises, feedback, and assessment-style practice. Choose another category platform if you need company assessments, broader programming-language coverage, or a wider coding challenge ecosystem.
Your product? Our editors can test SQLZoo in depth and publish a review, labelled as paid · from $149/mo →
SQLZoo pricing
SQLZoo fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Primary use | Practice |
| Languages supported | SQL Server, Oracle, MySQL, DB2, Mimer, PostgreSQL, SQLite, Access |
| Problem library size | Not verified |
| Solution explanations | Not verified |
| Custom challenges | Not verified |
| Company assessments | No |
| Deployment | Cloud |
| Platforms | Web |
| Support | Email, Docs |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Pricing | Free plan |
| Website | sqlzoo.net |
| Facts checked | 22 Sep 2026 |
Alternatives to SQLZoo
- LeetCodeA broad coding practice platform with judging, contests, study plans, and interview tools.9.4
- ExercismA free exercise platform combining broad language coverage, automation, and human feedback.9.2
- CodewarsA free, language-rich kata platform for structured practice and community learning.9.0
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Featured on iTechGuides
SQLZoo is listed in our Coding Challenge Platforms directory. Add the badge to your site — it links back to this page.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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