DROP LANGUAGE SQL - Language Statements DROP LANGUAGE remove a procedural language DROP LANGUAGE DROP [ PROCEDURAL ] LANGUAGE [ IF EXISTS ] name [ CASCADE | RESTRICT ] DROP LANGUAGE will remove the definition of the previously registered procedural language called name. IF EXISTS Do not throw an error if the function does not exist. A notice is issued in this case. name The name of an existing procedural language. For backward compatibility, the name may be enclosed by single quotes. CASCADE Automatically drop objects that depend on the language (such as functions in the language). 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.