错误：尝试以只读用户身份执行 SELECT 时，Postgres 上的关系表名的权限被拒绝

GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonly;

只读用户可以连接，查看表格，但是当它尝试进行简单的选择时，它会得到：

ERROR: permission denied for relation mytable
SQL state: 42501

这发生在 PostgreSQL 9.1 上

我做错了什么？

这是最近更新的 PostgreSQL 9+ 的完整解决方案。

CREATE USER readonly  WITH ENCRYPTED PASSWORD 'readonly';
GRANT USAGE ON SCHEMA public to readonly;
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readonly;

-- repeat code below for each database:

GRANT CONNECT ON DATABASE foo to readonly;
\c foo
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readonly; --- this grants privileges on new tables generated in new database "foo"
GRANT USAGE ON SCHEMA public to readonly; 
GRANT SELECT ON ALL SEQUENCES IN SCHEMA public TO readonly;
GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonly;

谢谢https://jamie.curle.io/creating-a-read-only-user-in-postgres/ https://jamie.curle.io/creating-a-read-only-user-in-postgres/对于几个重要的方面

如果有人找到更短的代码，并且最好是能够对所有现有数据库执行此操作的代码，那么将获得额外的荣誉。