elasticsearch/docs/reference/esql/functions/median.asciidoc
Abdon Pijpelink e87c49cb4b
[DOCS] Improve ES|QL functions reference for functions E-Z (#104623)
* Functions E-Z

* Incorporate changes from #103686

* More functions

* More functions

* Update docs/reference/esql/functions/floor.asciidoc

Co-authored-by: Liam Thompson <32779855+leemthompo@users.noreply.github.com>

* Update docs/reference/esql/functions/left.asciidoc

Co-authored-by: Liam Thompson <32779855+leemthompo@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Alexander Spies <alexander.spies@elastic.co>

* Review feedback

* Fix geo_shape description

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Co-authored-by: Liam Thompson <32779855+leemthompo@users.noreply.github.com>
Co-authored-by: Alexander Spies <alexander.spies@elastic.co>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
2024-01-25 16:32:24 +01:00

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[discrete]
[[esql-agg-median]]
=== `MEDIAN`
*Syntax*
[source,esql]
----
MEDIAN(column)
----
*Parameters*
`column`::
Column from which to return the median value.
*Description*
Returns the value that is greater than half of all values and less than half of
all values, also known as the 50% <<esql-agg-percentile>>.
NOTE: Like <<esql-agg-percentile>>, `MEDIAN` is <<esql-agg-percentile-approximate,usually approximate>>.
[WARNING]
====
`MEDIAN` is also {wikipedia}/Nondeterministic_algorithm[non-deterministic].
This means you can get slightly different results using the same data.
====
*Example*
[source.merge.styled,esql]
----
include::{esql-specs}/stats_percentile.csv-spec[tag=median]
----
[%header.monospaced.styled,format=dsv,separator=|]
|===
include::{esql-specs}/stats_percentile.csv-spec[tag=median-result]
|===