Prevent users SELECT permissions on the system database tables

Due to security considerations database, some users want to remove the SELECT privilege on the system database tables, looking for a long-N, that there are public role in role in the system database, permissions to that role allows the system database table SELECT permissions can be set to prohibit.

Reproduced in: https: //www.cnblogs.com/Spring/archive/2008/05/28/1209250.html