UDF

A User-Defined Function (UDF) is a custom piece of code that a programmer creates within a database or software system to perform a specific task not available through standard functions. Think of it as designing your own specialized tool to handle a unique calculation or operation. Once defined, a UDF can be used repeatedly in queries or programs, improving efficiency and allowing customization. It helps tailor database functionalities to particular needs without altering the core system, making data processing more flexible and adaptable to specialized requirements.