1.8.2 Functions

Organization of this subsection
(1) User-defined functions
(2) System-defined functions

(1) User-defined functions

This section describes functions that are defined using either CREATE FUNCTION or the CREATE TYPE function itself; it also shows functions that are provided by plug-ins. A function that is provided by a plug-in is called a plug-in function.

(2) System-defined functions

Constructor functions are generated by the system using the CREATE TYPE function.