> ## 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: JsonStringToBag

> Parse a JSON array string into a bag (array) data structure for iteration. Use JSONSTRINGTOBAG for JSON array processing in ETL data pipelines.

## Description

Converts a string expression that contains a json array to a bag (array).

## Syntax

`JsonStringToBag(string_expression)`

## Arguments

*string\_expression* - JSON string

## Examples

`JsonStringToBag('[1,2,3,4,5]')` returns a bag that contains the numbers 1,2,3,4,5 as items.

## Return value datatype

Bag of strings.

## Notes

For more information, read [How do I process JSON data](/etl/how-do-i-process-json-data/).

## Impact of null value

If input is null, returns null.