CREATE view actor_name_view(first_name_v,last_name_v) as
select
first_name,
last_name
from
actor

题目描述：针对actor表创建视图actor_name_view，只包含first_name以及last_name两列，

并对这两列重新命名，first_name为first_name_v，last_name修改为last_name_v

直接在视图名的后面用小括号创建视图中的字段名

create view actor_name_view (first_name_v,last_name_v) as

select first_name,last_name from actor