PG_AVAILABLE_EXTENSION_VERSIONS

PG_AVAILABLE_EXTENSION_VERSIONS displays the extension versions of certain database features.

**Table 1** PG_AVAILABLE_EXTENSION_VERSIONS columns
Name	Type	Description
name	name	Extension name
version	text	Version name
installed	boolean	The value is true if the version of this extension is currently installed.
superuser	boolean	The value is true if only system administrators are allowed to install this extension.
relocatable	boolean	The value is true if an extension can be relocated to another schema.
schema	name	Name of the schema that the extension must be installed into. The value is NULL if the extension is partially or fully relocatable.
requires	name[]	Names of prerequisite extensions. The value is NULL if there are no prerequisite extensions.
comment	text	Comment string from the extension's control file