PostgreSQL中如何创建只读用户？ - How do you create a read-only user in PostgreSQL?

问题：

I'd like to create a user in PostgreSQL that can only do SELECTs from a particular database.我想在 PostgreSQL 中创建一个只能从特定数据库执行 SELECT 的用户。 In MySQL the command would be:在 MySQL 中，命令将是：

GRANT SELECT ON mydb.* TO 'xxx'@'%' IDENTIFIED BY 'yyy';

What is the equivalent command or series of commands in PostgreSQL? PostgreSQL 中的等效命令或一系列命令是什么？

I tried...我试过了...

postgres=# CREATE ROLE xxx LOGIN PASSWORD 'yyy';
postgres=# GRANT SELECT ON DATABASE mydb TO xxx;

But it appears that the only things you can grant on a database are CREATE, CONNECT, TEMPORARY, and TEMP.但似乎您可以对数据库授予的唯一权限是 CREATE、CONNECT、TEMPORARY 和 TEMP。

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解决方案：

参考一： https://stackoom.com/question/3BlS
参考二： How do you create a read-only user in PostgreSQL?