> ## 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: ExtractQueryStringParam

> Extract the value of a specific query string parameter from a URL field. Use for URL parsing and web analytics processing in ETL data pipelines.

## Description

Extracts the value from a specified query string parameter for a url field.

## Syntax

`ExtractQueryStringParam(url, param_name)`

## Arguments

*url* - url string expression

*param\_name* - string expression indicating the parameter to extract

## Examples

`ExtractQueryStringParam('http://someurl/?origin=135&target=example', 'origin')` returns: '135'

`ExtractQueryStringParam('http://someurl/?origin=135&origin=246,id=321', 'origin')` returns: '135,246,id=321'

## Return value datatype

String

## Impact of null value

If any (or all) inputs are null, returns null.