> For the complete documentation index, see [llms.txt](https://help.reasy.ai/help/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.reasy.ai/help/getting-started/workspace/tools/data-driven-plugins/data-sources/joinplugin.md).

# JoinPlugin

The "Join" plugin helps you concatenate the data available in two different arrays. It returns an array as a string by concatenating all of the elements in the two arrays, separated by commas or a specified separator string, keeping the original array intact.

For instance, you can use this plugin to combine employee records with department details to create a comprehensive employee directory. This allows you to create custom datasets tailored to your unique needs.

### How to Use?

Drag and drop the Join plugin into your flow. Configure the plugin by selecting or specifying the key attributes of the arrays you want to join. 

1. Save and execute to see your data seamlessly joined for a richer and more insightful experience.