> ## Documentation Index
> Fetch the complete documentation index at: https://docs.less.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# Row ID

> Create an ID column in your dataset

The Row ID is pleasantly simple. It creates a new column with a ID ranging from 1 to however many rows your data set contains. You can use a Group By functionality (see the configuration guide below) to create IDs within certain groups of your data.

## Configuration

However, you can choose to add IDs within groups.

<Steps>
  <Step title="Column name">
    Input the name of the column you want to create.
  </Step>

  <Step title="Group by (optional)">
    This is an optional input. Select the columns that you want to group by when creating IDs. The IDs will created inside each of these groups. In other words, if you group by a column, the IDs will start from 1 again for each group.
  </Step>
</Steps>