nushell/docs/commands/dfr_drop-duplicates.md

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---
title: dfr drop-duplicates
layout: command
version: 0.59.1
---
Drops duplicate values in dataframe
## Signature
```> dfr drop-duplicates (subset) --maintain```
## Parameters
- `subset`: subset of columns to drop duplicates
- `--maintain`: maintain order
## Examples
drop duplicates
```shell
> [[a b]; [1 2] [3 4] [1 2]] | dfr to-df | dfr drop-duplicates
```