# MV_SUM

Converts a multivalued field into a single-valued field containing the sum of all its values.

## Syntax

`MV_SUM(number)`

### Parameters

#### `number`

A multivalued expression.

## Examples

```esql
ROW a=[3, 5, 6]
| EVAL sum_a = MV_SUM(a)
```

This example calculates the sum of the values in the multivalued column `a`.