PostgreSQL Exercises. Excellent set of PostgreSQL exercises by Alisdair Owens, each with an interactive editor that lets you run your queries against a real database. Starts with the basics, but also covers advanced topics like recursive queries and window aggregate functions.
Recent articles
- Under the hood of Canada Spends with Brendan Samek - 9th December 2025
- Highlights from my appearance on the Data Renegades podcast with CL Kao and Dori Wilson - 26th November 2025
- Claude Opus 4.5, and why evaluating new LLMs is increasingly difficult - 24th November 2025