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, and other explicitly dependent routines (seeALTER ROUTINE, the depends on extension action), to be dropped as well.
You must own the extension to useDROP EXTENSION.
Parameters
IF EXISTSDo not throw an error if the extension does not exist. A notice is issued in this case.
nameThe name of an installed extension.
CASCADEAutomatically drop objects that depend on the extension, and in turn all objects that depend on those objects (seeSection 5.14).
RESTRICTThis option prevents the specified extensions from being dropped if other objects, besides these extensions, their members, and their explicitly dependent routines, depend on them. This is the default.
Examples
To remove the extensionhstore from the current database:
DROP EXTENSION hstore;
This command will fail if any ofhstore's objects are in use in the database, for example if any tables have columns of thehstore type. Add theCASCADE option to forcibly remove those dependent objects as well.
Compatibility
DROP EXTENSION is aPostgreSQL extension.