Stage 03 · 03 · Backend · skill 2 of 4
SQL fundamentals
Query relational data with SELECT, WHERE, JOIN, GROUP BY. Think in sets.
After this you will be able to
- Filter and project rows
- JOIN two tables on a key
- Aggregate with GROUP BY and HAVING
freeCodeCamp / Mike Dane · why we picked it
Completing this unlocks: Databases & ORMs, Web vulnerabilities (OWASP)