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

MV_MIN [esql-mv_min]

Syntax

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

Parameters

field : Multivalue expression.

Description

Converts a multivalued expression into a single valued column containing the minimum value.

Supported types

field	result
boolean	boolean
date	date
date_nanos	date_nanos
double	double
integer	integer
ip	ip
keyword	keyword
long	long
text	keyword
unsigned_long	unsigned_long
version	version

Examples

ROW a=[2, 1]
| EVAL min_a = MV_MIN(a)

a:integer	min_a:integer
[2, 1]	1

It can be used by any column type, including keyword columns. In that case, it picks the first string, comparing their utf-8 representation byte by byte:

ROW a=["foo", "bar"]
| EVAL min_a = MV_MIN(a)

a:keyword	min_a:keyword
["foo", "bar"]	"bar"