sql script
create table `actor` (
actor_id smallint(5) not null comment '主键id',
first_name varchar(45) not null comment '名字',
last_name varchar(45) not null comment '姓氏',
last_update date not null comment '日期'
) 
create table `actor` (
actor_id smallint(5) not null comment '主键id',
first_name varchar(45) not null comment '名字',
last_name varchar(45) not null comment '姓氏',
last_update date not null comment '日期'
)