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Write User Defined Functions

duckdb.org

Overview The Rust client can register user-defined functions written in Rust: scalar functions with the vscalar feature and table functions with the vtab feature. Both operate on DuckDB's columnar data chunks, so a single call processes a batch of rows. The sections below build and register each, then point to a template for packaging them as a loadable extension. Scalar Functions A scalar function is a type that im…

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