HAVING vs WHERE in SQL | Filter Aggregated Data Using HAVING
In this video, you will learn how to use the HAVING clause in SQL to filter grouped data after aggregation. This tutorial explains filtering groups, aggregation conditions, and the difference between HAVING and WHERE in a simple beginner-friendly way.
Topics Covered:
• HAVING clause in SQL
• Filtering grouped results
• Aggregation conditions with COUNT, SUM, AVG
• Difference between HAVING and WHERE
The HAVING clause is used with GROUP BY to filter aggregated results returned by SQL queries.
Personal Example:
Finding spending categories where total expenses exceed a certain amount in a personal finance database.
Industry Example:
Businesses use HAVING in reporting systems to filter aggregated results such as regions with high sales, departments with large budgets, or products with high revenue.
Example SQL Query:
SELECT Category, SUM(Amount)
FROM Expenses
GROUP BY Category
HAVING SUM(Amount) 500;
This query returns only categories where the total spending is greater than 500.
This tutorial is useful for beginners learning:
SQL
Database fundamentals
MySQL
PostgreSQL
SQL Server
Data analytics basics
Understanding HAVING is essential for advanced SQL reporting, analytics queries, and business intelligence dashboards.
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