[discrete]
[[esql-replace]]
=== `REPLACE`

*Syntax*

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

*Parameters*

`str`::
String expression.

`regex`::
Regular expression.

`newStr`::
Replacement string.

*Description*

The function substitutes in the string `str` any match of the regular expression
`regex` with the replacement string `newStr`.

If any of the arguments is `null`, the result is `null`.

*Supported types*

include::types/replace.asciidoc[]

*Example*

This example replaces any occurrence of the word "World" with the word
"Universe":

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