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63 lines
1.1 KiB
Markdown
63 lines
1.1 KiB
Markdown
---
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slug: /en/sql-reference/aggregate-functions/reference/sum
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sidebar_position: 4
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---
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# sum
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Calculates the sum. Only works for numbers.
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**Syntax**
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```sql
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sum(num)
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```
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**Parameters**
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- `num`: Column of numeric values. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
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**Returned value**
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- The sum of the values. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
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**Example**
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First we create a table `employees` and insert some fictional employee data into it.
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Query:
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```sql
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CREATE TABLE employees
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(
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`id` UInt32,
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`name` String,
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`salary` UInt32
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)
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ENGINE = Log
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```
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```sql
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INSERT INTO employees VALUES
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(87432, 'John Smith', 45680),
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(59018, 'Jane Smith', 72350),
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(20376, 'Ivan Ivanovich', 58900),
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(71245, 'Anastasia Ivanovna', 89210);
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```
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We query for the total amount of the employee salaries using the `sum` function.
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Query:
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```sql
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SELECT sum(salary) FROM employees;
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```
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Result:
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```response
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┌─sum(salary)─┐
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1. │ 266140 │
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└─────────────┘
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```
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