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MySQL - SUM() function example

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Created by:

Dharman

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In this article, we would like to show you how to use SUM() function in MySQL.

Quick solution:

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SELECT SUM(`column_name`) FROM `table_name`;

Practical example

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To show how the SUM() function works, we will use the following table:

Note:

At the end of this article you can find database preparation SQL queries.

Example

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In this example, we will display the sum of values in salary column.

Query:

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SELECT SUM(`salary`) FROM `users`;

Output:

Database preparation

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create_tables.sql file:

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CREATE TABLE `users` (
    `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
    `name` VARCHAR(50) NOT NULL,
    `surname` VARCHAR(50) NOT NULL,
    `department_id` INT(10) UNSIGNED,
    `salary` DECIMAL(15,2) NOT NULL,
    PRIMARY KEY (`id`)
);

insert_data.sql file:

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INSERT INTO `users`
    ( `name`, `surname`, `department_id`, `salary`)
VALUES
    ('John', 'Stewart', 1, '3512.00'),
    ('Chris', 'Brown', 2, '1344.00'),
    ('Kate', 'Lewis', 3, '6574.00'),
    ('Ailisa', 'Gomez', NULL, '6500.00'),
    ('Gwendolyn', 'James', 2, '4200.00'),
    ('Simon', 'Collins', 4, '3320.00'),
    ('Taylor', 'Martin', 2, '1500.00'),
    ('Andrew', 'Thompson', NULL, '2100.00');