Back Uživatelem definovaná funkce Czech User Defined Function German Función definida por el usuario Spanish 사용자 정의 함수 Korean Fungsi bertakrif pengguna Malay Brukerdefinert funksjon NB UDF (funkcja) Polish
A user-defined function (UDF) is a function provided by the user of a program or environment, in a context where the usual assumption is that functions are built into the program or environment. UDFs are usually written for the requirement of its creator.