DROP EXTENSION

Function

DROP EXTENSION deletes an extension.

Precautions

• DROP EXTENSION deletes an extension from the database. When you delete an extension, the components that make up the extension are also deleted.
• The DROP EXTENSION command can be used only by the owner of the extension.

Syntax

DROP EXTENSION [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]

Parameter Description

• IF EXISTS

  If the IF EXISTS parameter is used and the extension does not exist, no error is reported. Instead, a NOTICE is generated.

• name

  Name of an installed extension.

• CASCADE

  Automatically deletes objects that depend on the extension.

• RESTRICT

  If any object depends on an extension, the extension cannot be deleted (unless all its member objects and other extension objects are deleted at a time using the DROP command). This is a default processing.

Examples

Delete extension hstore from the current database.

DROP EXTENSION hstore;

In the current database, if an object that uses hstore exists, this command will fail. For example, a column in any table is of the hstore type. Adding the CASCADE option can forcibly delete the extension and objects that depend on it.