--创建用户 test_user ,并授权 连接,查询视图create user test_user identified by test_user;grant connect to test_user;grant create view to test_user;--授权视图引用的表权限给新用户grant select on other_user.table1 to test_user with grant option;grant select on other_user.table2 to test_user with grant option;grant select on other_user.table3 to test_user with grant option;-- 使用新用户 test_user 创建相关视图create or replace view v_1 asselect a.*,b.*,c.* from  other_user.table1 ajoin other_user.table2 b on a.id=b.fidjoin other_user.table3 c on b.fid=c.xid-- 移出新用户创建视图的权限revoke create view from test_user;