Seems like a good time to recommend Apache Datafusion. It's designed to be a library, but works pretty well standalone as well. There's a CLI version, but also Python and Java bindings, as well as a Rust library, of course.
From my own experience I can say it integrates far better into your Rust app than DuckDB does.
From my own experience I can say it integrates far better into your Rust app than DuckDB does.
Well over 100 monthly contributors, too.