> ## Documentation Index
> Fetch the complete documentation index at: https://www.integrate.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ETL: OsPatchMinor

> Extract the OS patch minor version number from a user agent string using ua_parser. Use for granular OS version tracking in ETL data pipelines.

## Description

Extract operating system patch minor version number from user agent string, based on [ua\_parser](https://github.com/tobie/ua-parser).

## Syntax

`OsPatchMinor(user_agent_string)`

## Return value datatype

string

## Notes

Returns null if OS patch minor version number can't be extracted from string.

## Impact of null value

If input is null, returns null.