elasticsearch/docs/reference/query-languages/esql/_snippets/functions/mv_median.md

MV_MEDIAN [esql-mv_median]

Syntax

:::{image} ../../../../../images/mv_median.svg :alt: Embedded :class: text-center :::

Parameters

number

Multivalue expression.

Description

Converts a multivalued field into a single valued field containing the median value.

Supported types

number	result
double	double
integer	integer
long	long
unsigned_long	unsigned_long

Examples

ROW a=[3, 5, 1]
| EVAL median_a = MV_MEDIAN(a)

a:integer	median_a:integer
[3, 5, 1]	3

If the row has an even number of values for a column, the result will be the average of the middle two entries. If the column is not floating point, the average rounds down:

ROW a=[3, 7, 1, 6]
| EVAL median_a = MV_MEDIAN(a)

a:integer	median_a:integer
[3, 7, 1, 6]	4