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PostgreSQL 角色和权限详解：https://mp.weixin.qq.com/s?__biz=MzAxMzgyMDc3MQ==&mid=2247489015&idx=1&sn=b80658b249affcbed7532f0f653b3b5c&chksm=9b9de3fbacea6aed9d973682a9e68b60c36ed83d43a2acd42c1f1047e1d1e1fee25048a48175&scene=126&sessionid=1687307845#rd