elasticsearch/docs/reference/esql/functions/sqrt.asciidoc

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[discrete]
[[esql-sqrt]]
=== `SQRT`
*Syntax*
[.text-center]
image::esql/functions/signature/sqrt.svg[Embedded,opts=inline]
*Parameters*
`n`::
Numeric expression. If `null`, the function returns `null`.
*Description*
Returns the square root of a number. The input can be any numeric value, the
return value is always a double.
Square roots of negative numbers are NaN. Square roots of infinites are
infinite.
include::types/sqrt.asciidoc[]
*Example*
[source.merge.styled,esql]
----
include::{esql-specs}/math.csv-spec[tag=sqrt]
----
[%header.monospaced.styled,format=dsv,separator=|]
|===
include::{esql-specs}/math.csv-spec[tag=sqrt-result]
|===