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Implementing vectorized UDFs in Rust that you can use in DuckDB, with a little help from Arrow The title’s quite a mouthful but the gist of this post is how to implement Vectorized UDFs in Rust that you can use within DuckDB, specifically its Python API. Assuming you’re already familiar with DuckDB Python UDFs and Rust-Python FFI (using PyO3), I’ll get straight to the implementation. Otherwise, these two posts are great starting points: From Waddle to Flying: Quickly expanding DuckDB’s functio...