--创建视图
create view empview
as
select employee_id,last_name,salary
from employees
where department_id=80;--查询视图
select * from empview--修改视图
update empview set salary=20000
where employee_id=179

运行结果

--修改视图
create or replace view empview2
as
select employee_id,last_name,salary,department_name
from employees e,departments d
where e.department_id=d.department_id

--删除视图
drop view empview2

公司工资前10