removes extensions from the database. Dropping an extension causes its component objects to be dropped as well.

You must own the extension to use DROP EXTENSION.

This command fails if any of the extension objects are in use in the database. For example, if a table is defined with columns of the extension type. Add the option to forcibly remove those dependent objects.

Before issuing a DROP EXTENSION with the keyword, you should be aware of all object that depend on the extension to avoid unintended consequences.

IF EXISTS

Do not throw an error if the extension does not exist. A notice is issued.

name

The name of an installed extension.

Automatically drop objects that depend on the extension, and in turn all objects that depend on those objects. See the PostgreSQL information about Dependency Tracking.

RESTRICT

Refuse to drop an extension if any objects depend on it, other than the extension member objects. This is the default.

DROP EXTENSION is a Greenplum Database extension.

, ALTER EXTENSION