830 B
830 B
STARTS_WITH
[esql-starts_with]
Syntax
:::{image} ../../../../../images/starts_with.svg :alt: Embedded :class: text-center :::
Parameters
str
- String expression. If
null
, the function returnsnull
. prefix
- String expression. If
null
, the function returnsnull
.
Description
Returns a boolean that indicates whether a keyword string starts with another string.
Supported types
str | prefix | result |
---|---|---|
keyword | keyword | boolean |
keyword | text | boolean |
text | keyword | boolean |
text | text | boolean |
Example
FROM employees
| KEEP last_name
| EVAL ln_S = STARTS_WITH(last_name, "B")
last_name:keyword | ln_S:boolean |
---|---|
Awdeh | false |
Azuma | false |
Baek | true |
Bamford | true |
Bernatsky | true |