## 51.70. `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 51.71. `pg_group` Columns

Column Type Description
`groname` `name` (references `pg_authid`.`rolname`) Name of the group
`grosysid` `oid` (references `pg_authid`.`oid`) ID of this group
`grolist` `oid[]` (references `pg_authid`.`oid`) An array containing the IDs of the roles in this group