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DuckDB 1.3 ドキュメント 全文検索
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- C++ API – DuckDB 9414
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...F API The UDF API allows the definition of user-defined functions. It is exposed in duckdb:Connection through the methods: CreateScalarFunction() , CreateVectorizedFunction() , and variants. These methods created UDFs into the temporary schema ( TEMP_SCHEMA ) of the...owner connection that is the only one allowed to use and change them. CreateScalarFunction The user can code an ordinary scalar function and invoke the CreateScalarFunction() to register and afterward use the UDF...in a SELECT statement, for instance: bool bigger_than_four ( int value ) { return value > 4 ; } connection . CreateScalarFunction < bool , int > ( "bigger_than_four" , & bigger_than_four ); connection . Query ( "SELECT bigger_than_four(i) FROM (VALUES(... - https://man.mtool.work/duckdb/1.3/clients/cpp.html
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