答案

create table actor_name (
    first_name varchar(45) not null,
    last_name varchar(45) not null);/*注意:建表之后,需要;符号,以和之后的代码隔开,不然会报错*/
insert into actor_name (first_name, last_name)
    select first_name, last_name from actor;

优化

create table if not exists actor_name ( /*if not exists避免重复建表*/
    first_name varchar(45) not null,
    last_name varchar(45) not null);
insert into actor_name (first_name, last_name)
    select first_name, last_name from actor;