如何显示Redshift Spectrum（外部架构）格兰特？

Question

This post对于显示Redshift GRANTS非常有用，但不能在外部表/架构上显示GRANTS。

如何显示外部架构（和相对表）特权？

Answer 1

由于在外部表中仅可以select个数据，这足以检查对外部表的usage权限：

SELECT schemaname, objectname, usename,
       has_schema_privilege(usrs.usename, schemaname, 'usage')  AS usage
FROM(
    SELECT schemaname, tablename AS objectname, schemaname + '.' + tablename AS fullobj
    FROM SVV_EXTERNAL_TABLES
    ) AS objs,(SELECT * FROM pg_user) AS usrs