ES|QL `LENGTH` function

Syntax

Embedded

Parameters

string: String expression. If null, the function returns null.

Description

Returns the character length of a string.

Note

All strings are in UTF-8, so a single character can use multiple bytes.

Supported types

string	result
keyword	integer
text	integer

Example

		FROM airports
| WHERE country == "India"
| KEEP city
| EVAL fn_length = LENGTH(city)
		
	

city:keyword	fn_length:integer
Agwār	5
Ahmedabad	9
Bangalore	9