> For the complete documentation index, see [llms.txt](https://docs.kuwala.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kuwala.io/transformation-catalog/merging/union.md).

# Union

### Description

With this transformation, you can merge two tables that have the same columns.

### Parameters

* left\_block
* right\_block