Topic 8824 min readStructured Tutorial
Filtering Groups with GROUP BY and HAVING in MySQL
Quick Answer
In MySQL, the GROUP BY clause groups rows sharing a property, while the HAVING clause filters these groups based on aggregate conditions. Use HAVING to apply conditions on grouped data, such as filtering groups with a minimum count or sum.
Learning Objectives
- Understand the purpose of GROUP BY in MySQL queries.
- Learn how to use HAVING to filter grouped results.
- Differentiate between WHERE and HAVING clauses.
Introduction
When working with data in MySQL, summarizing information by groups is a common task. The GROUP BY clause allows you to group rows that share the same values in specified columns.
However, sometimes you need to filter these groups based on aggregate conditions, such as only showing groups with more than a certain number of records. This is where the HAVING clause comes in.
