## 51.71. `pg_group`

The view `pg_group` exists for backwards compatibility: it emulates a catalog that existed in PostgreSQL before version 8.1. It shows the names and members of all roles that are marked as not `rolcanlogin`, which is an approximation to the set of roles that are being used as groups.

Table 51.72. `pg_group` Columns

Name | Type | References | Description
--- | --- | --- | ---
`groname` | `name` | ``pg_authid`.rolname` | Name of the group
`grosysid` | `oid` | ``pg_authid`.oid` | ID of this group
`grolist` | `oid[]` | ``pg_authid`.oid` | An array containing the IDs of the roles in this group