SQL Gym
Contains ads
Everyone
info
10+
Downloads
About this app
Want to learn SQL but tired of theoretical tutorials? SQL Gym lets you practice from the very first minute.
Write real queries against fictitious store databases (customers, products, orders, artists, invoices) and receive immediate validation. All the content is included in the app: the exercises work offline and without creating an account.
How it works
Two learning paths:
ā¢ Basic (online store) ā SELECT, WHERE, ORDER BY, GROUP BY, and JOIN: 20 exercises.
ā¢ Advanced (music store) ā DISTINCT & LIMIT, subqueries, HAVING, CASE, multi-join, self-join, UNION, and advanced aggregations: 38 exercises.
You can switch paths whenever you want: each one saves its own progress.
Each exercise presents you with a real business problem: "What are the 5 best-selling products?" or "Which artists span more than three genres?" You write the query, the app executes it and tells you if it's correct by comparing the resultsānot the syntax.
Key Features
ā 58 progressive exercises in two paths, organized by concept
ā Results-based validation: any equivalent query is accepted
ā Progressive hints and a reference solution for each exercise
ā Learning notes for each module, to review the theory when you need it
ā Sandbox mode to freely explore the databases
ā Integrated schema explorer: view tables and columns at any time
ā Progress system with gradual exercise unlocking
ā Daily SQL tips (local notifications, optional)
ā No account or subscription required
Does it work offline?
Yes. The exercises, validation, sandbox, and your progress run entirely on your device, so you can practice even in airplane mode.
The app only uses the network for two optional services: displaying ads (Google AdMob) and sending usage statistics (Firebase Analytics). No ads are displayed offline, and statistics are sent later; none of this affects your practice.
Who is it for?
Students learning SQL, developers who want to review concepts, and anyone who prefers learning by doing rather than just reading.
Privacy
You don't need to create an account or provide any personal information: your progress is saved on your device, and we don't have any servers.
To display ads and understand which features are used, the app uses Google services (AdMob and Firebase Analytics), which receive technical data such as the advertising identifier and usage events. You can disable notifications from within the app and limit personalized ads in your device settings.
Full privacy policy: https://mkfnx.github.io/full-privacy-policy-es/
Write real queries against fictitious store databases (customers, products, orders, artists, invoices) and receive immediate validation. All the content is included in the app: the exercises work offline and without creating an account.
How it works
Two learning paths:
ā¢ Basic (online store) ā SELECT, WHERE, ORDER BY, GROUP BY, and JOIN: 20 exercises.
ā¢ Advanced (music store) ā DISTINCT & LIMIT, subqueries, HAVING, CASE, multi-join, self-join, UNION, and advanced aggregations: 38 exercises.
You can switch paths whenever you want: each one saves its own progress.
Each exercise presents you with a real business problem: "What are the 5 best-selling products?" or "Which artists span more than three genres?" You write the query, the app executes it and tells you if it's correct by comparing the resultsānot the syntax.
Key Features
ā 58 progressive exercises in two paths, organized by concept
ā Results-based validation: any equivalent query is accepted
ā Progressive hints and a reference solution for each exercise
ā Learning notes for each module, to review the theory when you need it
ā Sandbox mode to freely explore the databases
ā Integrated schema explorer: view tables and columns at any time
ā Progress system with gradual exercise unlocking
ā Daily SQL tips (local notifications, optional)
ā No account or subscription required
Does it work offline?
Yes. The exercises, validation, sandbox, and your progress run entirely on your device, so you can practice even in airplane mode.
The app only uses the network for two optional services: displaying ads (Google AdMob) and sending usage statistics (Firebase Analytics). No ads are displayed offline, and statistics are sent later; none of this affects your practice.
Who is it for?
Students learning SQL, developers who want to review concepts, and anyone who prefers learning by doing rather than just reading.
Privacy
You don't need to create an account or provide any personal information: your progress is saved on your device, and we don't have any servers.
To display ads and understand which features are used, the app uses Google services (AdMob and Firebase Analytics), which receive technical data such as the advertising identifier and usage events. You can disable notifications from within the app and limit personalized ads in your device settings.
Full privacy policy: https://mkfnx.github.io/full-privacy-policy-es/
Practice SQL with 58 real-world exercises, no registration required. Works offline.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
Whatās new
Nueva ruta avanzada: 38 ejercicios sobre una tienda de mĆŗsica (subconsultas, HAVING, CASE, multi-join, self-join, UNION y agregaciones). ā¢ Elige entre dos rutas de aprendizaje; cada una guarda su propio progreso. ā¢ "Ver soluciĆ³n": consulta de referencia en cada ejercicio. ā¢ Tips diarios de SQL con notificaciones opcionales. ā¢ Arranque mĆ”s rĆ”pido sin conexiĆ³n. ā¢ Textos y tĆtulos revisados, y correcciones de contenido.
App support
About the developer
Miguel Ćngel LĆ³pez JuĆ”rez
soporte@mkfnx.dev
Calzada General Mariano Escobedo 172
A6
11320 Ciudad de MĆ©xico, CDMX
Mexico
