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44.9. pg_auth_members

The catalog 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.

Table 44-9. pg_auth_members Columns

Name Type References Description
roleid oid pg_authid.oid ID of a role that has a member
member oid pg_authid.oid ID of a role that is a member of roleid
grantor oid pg_authid.oid ID of the role that granted this membership
admin_option bool   True if member can grant membership in roleid to others
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