tldr/pages/common/csv-diff.md

# csv-diff

> View differences between two CSV, TSV or JSON files.
> More information: <https://github.com/simonw/csv-diff>.

- Display a human-readable summary of differences between files using a specific column as a unique identifier:

`csv-diff {{path/to/file1.csv}} {{path/to/file2.csv}} --key {{column_name}}`

- Display a human-readable summary of differences between files that includes unchanged values in rows with at least one change:

`csv-diff {{path/to/file1.csv}} {{path/to/file2.csv}} --key {{column_name}} --show-unchanged`

- Display a summary of differences between files in JSON format using a specific column as a unique identifier:

`csv-diff {{path/to/file1.csv}} {{path/to/file2.csv}} --key {{column_name}} --json`