ClickHouse/docs/en/sql-reference/aggregate-functions/reference/sum.md

---
slug: /en/sql-reference/aggregate-functions/reference/sum
sidebar_position: 4
---

# sum

Calculates the sum. Only works for numbers.

```
SELECT sum(salary) FROM employees;
```
[docs] split aggregate function and system table references (#11742) * prefer relative links from root * wip * split aggregate function reference * split system tables 2020-06-18 08:24:31 +00:00			`---`
add slugs 2022-08-28 14:53:34 +00:00			`slug: /en/sql-reference/aggregate-functions/reference/sum`
Removed /ja folder, cleaned up /ru markdown 2022-04-09 13:29:05 +00:00			`sidebar_position: 4`
[docs] split aggregate function and system table references (#11742) * prefer relative links from root * wip * split aggregate function reference * split system tables 2020-06-18 08:24:31 +00:00			`---`

Remove H1 anchor tags from docs 2022-06-02 10:55:18 +00:00			`# sum`
[docs] split aggregate function and system table references (#11742) * prefer relative links from root * wip * split aggregate function reference * split system tables 2020-06-18 08:24:31 +00:00
			`Calculates the sum. Only works for numbers.`
Update sum.md 2023-01-26 14:33:30 +00:00
			```
			`SELECT sum(salary) FROM employees;`
			```