MySQL Function Reference

MySQL SUM() Function

Learn how to use the MySQL SUM aggregate function for summary queries and reports.

Syntax

SUM(expression)

Basic Example

SELECT SUM(total) AS result
FROM orders;

When to use it

Use SUM when you need a aggregate operation in MySQL. This page is designed as a quick reference for developers, analysts, and students comparing SQL dialects.

Common mistake

A common mistake is copying syntax from another SQL dialect. Always verify function name, argument order, and formatting tokens for MySQL.

Related SQL Functions

MySQL CONCAT() Function
MySQL CONCAT_WS() Function
MySQL SUBSTRING() Function
MySQL LEFT() Function
MySQL RIGHT() Function
MySQL REPLACE() Function

FAQ

Is SUM available in every SQL database?

Not always. Function names and argument behavior can differ across SQL engines.

Can I use this in SELECT queries?

Yes. Most SQL functions are commonly used in SELECT and often in WHERE, ORDER BY, and GROUP BY depending on the function.