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

[discete]
[[esql-rlike-operator]]
==== `RLIKE`

Use `RLIKE` to filter data based on string patterns using using
<<regexp-syntax,regular expressions>>. `RLIKE` usually acts on a field placed on
the left-hand side of the operator, but it can also act on a constant (literal)
expression. The right-hand side of the operator represents the pattern.

[source,esql]
----
FROM employees
| WHERE first_name RLIKE ".leja.*"
| KEEP first_name, last_name
----