Write and run SQL queries in your browser. Practice with sample African business databases — no setup required.
Run a query to see results here
Your queries will appear here
Learning SQL is one of the most valuable skills for anyone working with data in Africa's growing tech ecosystem. Whether you're a computer science student in Lagos, a data analyst in Nairobi, or a developer in Johannesburg, SQL proficiency opens doors to countless opportunities in tech, finance, and business intelligence.
Unlike generic SQL tutorials, our playground includes sample databases modelled on real African business scenarios. Practice queries against an e-commerce store with products priced in Naira, Shillings, and Rand. Explore a school management system reflecting African educational structures, or query hospital records that mirror healthcare data across the continent.
This SQL playground runs entirely in your browser using sql.js (SQLite compiled to WebAssembly). There's nothing to download, no database server to configure, and no account to create. Simply type your query and press Ctrl+Enter to see results instantly. It's perfect for quick practice during lunch breaks, interview preparation, or classroom demonstrations.
Start with basic SELECT statements and work your way up to complex queries. Practice JOINs to combine data across tables, GROUP BY with aggregate functions for summary reports, subqueries for nested logic, and window functions for advanced analytics. Each sample database includes enough data to produce meaningful results for all these concepts. The schema browser shows all available tables and columns so you always know what data you can query.
SQL skills are in high demand across Africa's tech hubs. From Lagos to Cape Town, companies are hiring data professionals who can extract insights from databases. This free tool gives you unlimited practice time with instant feedback — no paid subscriptions, no signup walls. Start writing queries now and level up your database skills for your next job interview or data project.
No. Everything runs locally in your browser using WebAssembly. No data is sent to any server. When you refresh the page, the sample databases are recreated fresh.
This playground uses SQLite syntax, which is very close to standard SQL. Most SELECT, INSERT, UPDATE, DELETE, JOIN, GROUP BY, and aggregate function queries work exactly as expected. Some advanced features specific to PostgreSQL or MySQL (like stored procedures) are not available.
Yes! You can run CREATE TABLE, INSERT INTO, and other DDL/DML statements. Your custom tables exist for the duration of your session. Switch between sample databases to get fresh starting data at any time.
Absolutely. The sample queries cover common interview topics including JOINs, aggregations, subqueries, and window functions. Practice these patterns and you'll be well-prepared for SQL technical interviews at African and international tech companies.
We believe learning is more effective when the data feels familiar. Our sample databases use African currencies, city names, and business contexts that reflect the environments where many of our users work and live.