How to Use GROUP BY in SQL with Simple Examples

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Master the GROUP BY and HAVING clauses in PostgreSQL with simple, real-world examples and practical SQL tips.

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Description
In this tutorial, we dive deep into the GROUP BY and HAVING clauses in PostgreSQL, perfect for beginners and intermediate SQL learners.

You'll learn how to group data meaningfully using real-world examples such as employee salary summaries and product sales analytics. We also explore advanced options like ROLLUP, CUBE, and GROUPING SETS, which are essential for creating insightful reports and dashboards.

✅ Topics Covered:

GROUP BY basics with syntax

Using aggregate functions (SUM, COUNT, AVG, etc.)

Filtering grouped data with HAVING

Advanced GROUP BY techniques for flexible reporting

Practical examples using employees and sales data

If you're just starting with SQL or looking to level up your PostgreSQL reporting skills, this video is for you!

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