1. 数据库系统角色 1) 系统角色 select * from pg_roles where rolname='pguser'; 2) 自定义角色 select t2.rolname as group_name,t3.rolname as member_name,t4.rolname as grantor_name,t1.admin_option from pg_auth_members t1 left join pg_authid t2 on t2.oid = t1.roleid left join pg_authid t3 on t3.oid = t1.member left j
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