Notifications You must be signed in to change notification settings For basics follow the SQL Bolt tutorial. Then you can set up a postgres database in podman (or docker) and try out the exercises ...

The 3 Levels of SQL Mastery: 🟢 Basics: CRUD, Filtering, Joins. 🟡 Intermediate: Aggregations, Subqueries, Constraints. 🔴 Advanced: Window Functions, Recursive CTEs, Execution Plans. This post breaks ...

Data Analyst | I Transform Raw Data Into Strategic Insights That Drive Smarter Decisions And Encourage Business Growth | Business Analyst | Data Scientist | Instructor | SQL • Power BI • Python • ...