nushell/docs/commands/dfr_group-by.md

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---
title: dfr group-by
layout: command
version: 0.59.1
---
Creates a groupby object that can be used for other aggregations
## Signature
```> dfr group-by ...rest```
## Parameters
- `...rest`: groupby columns
## Examples
Grouping by column a
```shell
> [[a b]; [one 1] [one 2]] | dfr to-df | dfr group-by a
```