MySQL Aggregate Functions: SUM Function Tutorial
Quick Answer
The MySQL SUM function calculates the total sum of a numeric column across rows in a query result. It is an aggregate function used to add up values, often combined with GROUP BY to summarize data by categories.
Learning Objectives
- Understand the purpose and usage of the MySQL SUM function.
- Write SQL queries using SUM to calculate totals.
- Combine SUM with GROUP BY to aggregate data by categories.
Introduction
The SUM function in MySQL is a powerful aggregate function that helps you calculate the total of numeric values in a column.
It is commonly used in data analysis and reporting to find totals, such as total sales or total quantities.
This tutorial will guide you through the basics of using SUM, including syntax, examples, and best practices.
Aggregation is the foundation of meaningful data insights.





