Advanced SQL in PostgreSQL: Rollup, Cube, and Grouping
If you've already mastered GROUP BY, it's time to level up your SQL skills 🚀
In this video, you'll learn how to use ROLLUP and CUBE in PostgreSQL to automatically generate subtotals and totals, something widely used in BI, Data Warehouses, and management reports.
You will understand:
✔ What ROLLUP is and how its hierarchy works
✔ What CUBE is and how it generates all possible combinations
✔ Practical difference between ROLLUP and CUBE
✔ How to use the GROUPING() function