DROP EXTENSION
DROP EXTENSION — remove an extension
Synopsis
DROP EXTENSION [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
Description
DROP EXTENSION removes extensions from the database. Dropping an extension causes its member objects to be dropped as well.
You must own the extension to use DROP EXTENSION.
Parameters
IF EXISTS
Do not throw an error if the extension does not exist. A notice is issued in this case.
name
The name of an installed extension.
CASCADE
Automatically drop objects that depend on the extension, and in turn all objects that depend on those objects.
RESTRICT
Refuse to drop the extension if any objects depend on it (other than its own member objects and other extensions listed in the same DROP command). This is the default.
Examples
To remove the extension hstore from the current database:
DROP EXTENSION hstore;
This command will fail if any objects in the database are using the extension hstore, for example if a table column is of type hstore. Adding the CASCADE option can force the removal of these dependent objects as well.