xan is a command line tool that can be used to process CSV files directly from the shell.
Xan : un outil en CLI Open Source, conçu pour manipuler les CSV développé chez Sciences Po Medialab

Doc: https://duckdb.org/docs/
Exemples:

• https://write.as/bortzmeyer/essai-avec-duckdb
• https://labs.ripe.net/author/giovane_moura/easy-ripe-atlas-data-analysis-with-sql/

Inclus dans Debian (depuis 2015)

Code: https://github.com/multiprocessio/dsq
Not under active development. While development may continue in the future with a different architecture, for the moment you should probably instead use DuckDB, ClickHouse-local, or GlareDB (based on DataFusion).