elasticsearch/docs/reference/query-languages/esql/_snippets/functions/left.md

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LEFT [esql-left]

Syntax

:::{image} ../../../../../images/left.svg :alt: Embedded :class: text-center :::

Parameters

string
The string from which to return a substring.
length
The number of characters to return.

Description

Returns the substring that extracts length chars from string starting from the left.

Supported types

string length result
keyword integer keyword
text integer keyword

Example

FROM employees
| KEEP last_name
| EVAL left = LEFT(last_name, 3)
| SORT last_name ASC
| LIMIT 5
last_name:keyword left:keyword
Awdeh Awd
Azuma Azu
Baek Bae
Bamford Bam
Bernatsky Ber