In this tutorial, we explore the powerful GROUPING SETS, ROLLUP, and CUBE clauses in PostgreSQL, which are essential for advanced data analysis and reporting.
You'll learn how to:
Use GROUPING SETS to calculate subtotals across different combinations of dimensions like region, category, and subcategory.
Apply ROLLUP to create hierarchical totals—ideal for business summaries (e.g., region → category → subcategory).
Use CUBE for full multidimensional aggregation—critical in business intelligence and OLAP scenarios.
This video walks through real SQL examples using a sample sales_data table and demonstrates how these clauses simplify complex reporting tasks. If you're working with data warehouses, financial reports, or BI dashboards, mastering these techniques is a must!
👨💻 Whether you're a student, analyst, or backend developer, this PostgreSQL video will take your skills to the next level.
📌 Don’t forget to like, subscribe, and check out the full PostgreSQL series!
No comments:
Post a Comment