Topic 10618 min readStructured Tutorial
SQL Server GROUP BY and HAVING Examples
Quick Answer
In SQL Server, the GROUP BY clause groups rows sharing a property so aggregate functions can be applied. The HAVING clause filters these grouped results based on conditions. Together, they enable summarizing data and filtering groups, essential for reports and analytics.
Learning Objectives
- Understand the purpose and syntax of GROUP BY in SQL Server.
- Learn how to use HAVING to filter grouped data.
- Practice writing queries combining GROUP BY and HAVING with aggregate functions.
Introduction
When working with data in SQL Server, summarizing information is a common task. The GROUP BY clause allows you to group rows that share common values in specified columns.
After grouping, you often want to filter these groups based on aggregate conditions. This is where the HAVING clause comes in, enabling filtering on aggregated data.
