PG_AVAILABLE_EXTENSION_VERSIONS

PG_AVAILABLE_EXTENSION_VERSIONS displays 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	Whether this extension version is installed
superuser	Boolean	Whether only system administrators are allowed to install the extension
relocatable	Boolean	Whether the extension can be relocated to another schema
schema	name	Name of the schema that the extension must be installed into (NULL if the extension is partially or fully relocatable)
requires	name[]	Names of prerequisite extensions (NULL if none)
comment	text	Comment string from the extension's control file