Databases & SQL · ⁨Bases de datos y SQL⁩

Every lesson runs in your browser — write real code, press Run, and the tasks check themselves. Free, no account needed, with translated notes paired with English. · ⁨Cada lección funciona en su navegador: escriba código real, presione Ejecutar y las tareas se verifican solas. Gratis, sin necesidad de cuenta, con notas traducidas emparejadas con inglés.⁩

Start the course · ⁨Iniciar el curso⁩

Lessons in this course · ⁨Lecciones en este curso⁩

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1. history A short history of SQL · ⁨Una breve historia de SQL⁩ Reading and resources
2. usage What SQL is used for · ⁨Para qué se usa SQL⁩ Reading and resources
3. resources Where to learn more · ⁨Dónde aprender más⁩ Reading and resources
4. setup Set up your computer · ⁨Configura tu computadora⁩ Reading and resources
5. 01 Databases and SELECT · ⁨Bases de datos y SELECT⁩ 2 required tasks Video
6. 02 Choosing columns · ⁨Elegir columnas⁩ 2 required tasks Video
7. 03 Filtering with WHERE · ⁨Filtrado con WHERE⁩ 2 required tasks Video
8. 04 AND, OR, NOT · ⁨Y, O, NO⁩ 2 required tasks Video
9. 05 Sorting with ORDER BY · ⁨Ordenamiento con ORDER BY⁩ 2 required tasks Video
10. 06 Counting and averaging · ⁨Conteo y promedio⁩ 2 required tasks Video
11. 07 LIKE, IN and BETWEEN · ⁨LIKE, IN y BETWEEN⁩ 2 required tasks Video
12. 08 Grouping with GROUP BY · ⁨Agrupación con GROUP BY⁩ 2 required tasks Video
13. 09 Tables, keys and relationships · ⁨Tablas, claves y relaciones⁩ 2 required tasks Video
14. 10 INNER JOIN 2 required tasks Video
15. 11 Joins with grouping · ⁨Uniones con agrupación⁩ 2 required tasks Video
16. 12 Creating tables · ⁨Creación de tablas⁩ 2 required tasks Video
17. 13 Changing the schema · ⁨Cambiar el esquema⁩ 2 required tasks Video
18. 14 Inserting rows · ⁨Insertar filas⁩ 2 required tasks Video
19. 15 Updating rows · ⁨Actualización de filas⁩ 2 required tasks Video
20. 16 Deleting rows · ⁨Eliminar filas⁩ 2 required tasks Video
21. 17 Normalisation · ⁨Normalización⁩ 2 required tasks Video

Language reference · ⁨Referencia del idioma⁩

/know/reference/sql