---
title: ES|QL MV_COUNT function
description: 
url: https://docs-v3-preview.elastic.dev/elastic/elasticsearch/pull/152901/reference/query-languages/esql/functions-operators/mv-functions/mv_count
products:
  - Elasticsearch
---

# ES|QL MV_COUNT function
Counts the values in a multi-value field.

## Syntax

![Embedded](https://docs-v3-preview.elastic.dev/elastic/elasticsearch/pull/152901/reference/query-languages/esql/images/generated/x-pack-esql/functions/mv_count.svg)


## Parameters

<definitions>
  <definition term="field">
    Expression that can be null, a single value, or multiple values.
  </definition>
</definitions>


## Description

Converts a multivalued expression into a single valued column containing a count of the number of values.

## Supported types


| field                                                      | result  |
|------------------------------------------------------------|---------|
| boolean                                                    | integer |
| cartesian_point                                            | integer |
| cartesian_shape                                            | integer |
| date                                                       | integer |
| date_nanos                                                 | integer |
| date_range <applies-to>Elastic Stack: Planned</applies-to> | integer |
| double                                                     | integer |
| flattened <applies-to>Elastic Stack: Planned</applies-to>  | integer |
| geo_point                                                  | integer |
| geo_shape                                                  | integer |
| geohash                                                    | integer |
| geohex                                                     | integer |
| geotile                                                    | integer |
| integer                                                    | integer |
| ip                                                         | integer |
| keyword                                                    | integer |
| long                                                       | integer |
| text                                                       | integer |
| unsigned_long                                              | integer |
| version                                                    | integer |


## Example

```esql
ROW a=["foo", "zoo", "bar"]
| EVAL count_a = MV_COUNT(a)
```


| a:keyword             | count_a:integer |
|-----------------------|-----------------|
| ["foo", "zoo", "bar"] | 3               |