17.10 - Overall Procedure Synopsis - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - SQL External Routine Programming

Advanced SQL Engine
Teradata Database
Release Number
Release Date
July 2021
Content Type
Programming Reference
Publication ID
English (United States)

The steps that you take to develop, compile, install, and use a UDF depend on whether the UDF issues operating system I/O calls and whether the UDF implements UDT functionality, such as transform or ordering. The meaning of I/O as it applies to UDFs is any operating system call that requires the operating system to retain a resource context, such as for open files or other operating system services. Such resource usage usually returns a handle to the caller that is used to access the resource and must be released when finished using it.