DROP LANGUAGE — remove a procedural language
DROP [ PROCEDURAL ] LANGUAGE name [ CASCADE | RESTRICT ]
DROP LANGUAGE will remove the definition
of the previously registered procedural language called
name.
nameThe name of an existing procedural language. For backward compatibility, the name may be enclosed by single quotes.
CASCADEAutomatically drop objects that depend on the language (such as functions in the language).
RESTRICTRefuse to drop the language if any objects depend on it. This is the default.