51.68. pg_available_extension_versions
 The pg_available_extension_versions view lists the specific extension versions that are available for installation. See also the pg_extension catalog, which shows the extensions currently installed. 
Table 51.69. pg_available_extension_versions Columns
| Column Type Description | 
|---|
| 
 Extension name | 
| 
 Version name | 
| 
 True if this version of this extension is currently installed | 
| 
  True if only superusers are allowed to install this extension (but see  | 
| 
 True if the extension can be installed by non-superusers with appropriate privileges | 
| 
 True if extension can be relocated to another schema | 
| 
  Name of the schema that the extension must be installed into, or  | 
| 
  Names of prerequisite extensions, or  | 
| 
 Comment string from the extension's control file | 
 The pg_available_extension_versions view is read-only.