Hubert 'depesz' Lubaczewski：系统角色——是什么，为什么，如何？
原文英文，约1800词，阅读约需7分钟。发表于：。Not everyone knows, but at since PostgreSQL 9.6, we have some built-in roles. Of course, there is always superuser (usually called postgres), but I'm not talking about it. I'm talking about...
PostgreSQL 9.6开始，我们有一些以pg_开头的内置角色，它们是组，不能用于登录数据库，但可以授予用户更多的权限，包括CHECKPOINT命令，pg_database_owner角色，pg_execute_server_program，pg_read_all_settings，pg_read_all_stats，pg_stat_scan_tables，pg_signal_backend和pg_use_reserved_connections等。
