Gbase 8C system table PG_ auth_ members

pg_auth_members The system table stores and displays the membership between roles .

name	type	quote	describe
roleid	oid	pg_authid.oid	Having the role of a member ID
member	oid	pg_authid.oid	roleid Member role of ID
grantor	oid	pg_authid.oid	The role that authorizes this membership ID
admin_option	bool		If member Can put the roleid Membership granted to others , It is true