pg_available_extensions

The pg_available_extensions view lists the extensions that are available for installation. The pg_extension system catalog table shows the extensions currently installed.

The view is read only.

column	type	description
name	name	Extension name.
default_version	text	Name of default version, or NULL if none is specified.
installed_version	text	Currently installed version of the extension, or NULL if not installed.
comment	text	Comment string from the extension control file.

Parent topic: System Catalogs Definitions