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Write User Defined Functions

duckdb.org

Overview The JDBC driver can register user-defined functions (UDFs) written in Java, including scalar functions and table functions. This page covers building and registering both, from the simple functional-interface overloads to the vectorized interface, along with type mapping and the function registry. Scalar Functions Build a scalar function with the DuckDBFunctions.scalarFunction() builder — which returns an o…

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