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

[discrete]
[[esql-e]]
=== `E`

*Syntax*

[.text-center]
image::esql/functions/signature/e.svg[Embedded,opts=inline]

*Description*

Returns {wikipedia}/E_(mathematical_constant)[Euler's number].

*Example*

[source.merge.styled,esql]
----
include::{esql-specs}/math.csv-spec[tag=e]
----
[%header.monospaced.styled,format=dsv,separator=|]
|===
include::{esql-specs}/math.csv-spec[tag=e-result]
|===