pg_auth_members shows the membership relations between roles. Any non-circular set of relationships is allowed.
Because user identities are cluster-wide,
pg_auth_members is shared across all databases of a cluster: there is only one copy of
pg_auth_members per cluster, not one per database.
|ID of a role that has a member|
|ID of a role that is a member of |
|ID of the role that granted this membership|
|True if |