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

[discrete]
[[esql-length]]
=== `LENGTH`
Returns the character length of a string.

[source,esql]
----
FROM employees
| KEEP first_name, last_name, height
| EVAL fn_length = LENGTH(first_name)
----
Restructure ES\|QL docs (#100806) * Break out 'Limitations' into separate page * Add REST API docs * Restructure commands, functions, and operators refs * Add placeholder for getting started guide * Group 'Syntax', 'Metafields', and 'MV fields' under 'Language' * Add placeholder for Kibana page * Add link from landing page * Apply uniform formatting to ACOS, CASE, and DATE_PARSE function refs * Reword default LIMIT * Add support for COUNT() Move 'Commands' and 'Functions and operators' to individual pages --------- Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com> 2023-10-17 23:36:14 +08:00			`[discrete]`
Move each function to its own file 2023-05-11 23:02:27 +08:00			`[[esql-length]]`
			=== `LENGTH`
			`Returns the character length of a string.`

			`[source,esql]`
			`----`
			`FROM employees`
Rename PROJECT command to KEEP (ESQL-1282) 2023-06-19 19:06:44 +08:00			`\| KEEP first_name, last_name, height`
Move each function to its own file 2023-05-11 23:02:27 +08:00			`\| EVAL fn_length = LENGTH(first_name)`
			`----`