DROP LANGUAGE DROP LANGUAGE 7 SQL - Language Statements DROP LANGUAGE remove a procedural language DROP [ PROCEDURAL ] LANGUAGE [ IF EXISTS ] name [ CASCADE | RESTRICT ] DROP LANGUAGE removes the definition of a previously registered procedural language. You must be a superuser or the owner of the language to use DROP LANGUAGE. As of PostgreSQL 9.1, most procedural languages have been made into extensions, and should therefore be removed with DROP EXTENSION not DROP LANGUAGE. IF EXISTS Do not throw an error if the language does not exist. A notice is issued in this case. name The name of an existing procedural language. CASCADE Automatically drop objects that depend on the language (such as functions in the language), and in turn all objects that depend on those objects (see ). RESTRICT Refuse to drop the language if any objects depend on it. This is the default. This command removes the procedural language plsample: DROP LANGUAGE plsample; There is no DROP LANGUAGE statement in the SQL standard.