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我正在尝试从两个不同的表中为特定用户获取角色和权限。我的查询是这样的：

Select r.grantee, r.granted_role , s.privilege 
From dba_role_privs r, dba_sys_privs s 
Where r.grantee=s.grantee and r.grantee=(select username from dba_users where username='HR');

我结束了这个：

GRANTEE    GRANTED_ROLE         PRIVILEGE
---------- -------------------- --------------------
HR         DBA                  CREATE VIEW
HR         RESOURCE             CREATE VIEW
HR         DBA                  UNLIMITED TABLESPACE
HR         RESOURCE             UNLIMITED TABLESPACE
HR         DBA                  CREATE DATABASE LINK
HR         RESOURCE             CREATE DATABASE LINK
HR         DBA                  CREATE SEQUENCE
HR         RESOURCE             CREATE SEQUENCE
HR         DBA                  CREATE SESSION
HR         RESOURCE             CREATE SESSION
HR         DBA                  ALTER SESSION

GRANTEE    GRANTED_ROLE         PRIVILEGE
---------- -------------------- --------------------
HR         RESOURCE             ALTER SESSION
HR         DBA                  CREATE SYNONYM
HR         RESOURCE             CREATE SYNONYM

14 rows selected.

当用户没有很多角色/权限时这很好，但是对于像 SYS 这样的用户，例如，我最终得到10600 rows selected.

有没有办法让查询结果更好？我错过了加入吗？

PS：我正在研究oracle 11g。

如果您可以帮助使其变得更好，请这样做

先谢谢了！

4

1 回答 1

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也许您想要union all而不是加入：

Select r.grantee, r.granted_role as role_or_privilege
From dba_role_privs r, 
Where r.grantee = (select username from dba_users where username = 'HR'); 
union all
select s.grantee, s.privilege 
from dba_sys_privs s 
Where s.grantee = (select username from dba_users where username = 'HR');

我留下的逻辑where与您的查询相同。但是，这对我来说更有意义：

Select r.grantee, r.granted_role as role_or_privilege
From dba_role_privs r, 
Where r.grantee = 'HR'; 
union all
select s.grantee, s.privilege 
from dba_sys_privs s 
Where s.grantee = 'HR';
于 2016-01-29T16:25:59.410 回答