历史版本。 PostgreSQL 9.1 已结束支持。 2016-10-27. 请参阅 当前版本手册.
45.52. pg_available_extension_versions #
pg_available_extension_versions视图列出了可供安装的特定扩展版本。另请参阅pg_extension目录，显示当前已安装的扩展。
表 45.53. pg_available_extension_versions 列
| Name | Type | Description |
|---|---|---|
name | name | Extension name |
version | text | Version name |
installed | bool | True if this version of this extension is currently installed |
superuser | bool | True if only superusers are allowed to install this extension |
relocatable | bool | True if extension can be relocated to another schema |
schema | name | Name of the schema that the extension must be installed into,
or NULL if partially or fully relocatable |
requires | name[] | Names of prerequisite extensions,
or NULL if none |
comment | text | Comment string from the extension's control file |
pg_available_extension_versions视图是只读的。