
--创建视图【必须有dba权限】
create view v_emp as select account.account_name from account;
--查询视图
select * from v_emp;
--创建只读视图
create view v_emp as select account.account_name from account with read only;
--创建视图【必须有dba权限】
create view v_emp as select account.account_name from account;
--查询视图
select * from v_emp;
--创建只读视图
create view v_emp as select account.account_name from account with read only;