思路:
1.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;
2.注意 create view ... as ... 中的 as 是创建视图语法中的一部分,而后面的两个 as 只是为字段创建别名
create view actor_name_view as
select first_name as fist_name_v, last_name as last_name_v
from actor;