> For the complete documentation index, see [llms.txt](https://resources.less.tech/less-tech/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://resources.less.tech/less-tech/modelling/action-guides/new-columns/row-id.md).

# Row ID

<figure><img src="/files/f5oXbUTcR6QDWDsxcrZS" alt=""><figcaption><p>The Row ID Action</p></figcaption></figure>

This Action is very simple. It only adds a row ID column to your existing data set.&#x20;