SQL_227
创建一个actor表,包含如下列信息
https://www.nowcoder.com/practice/ac233de508ef4849b0eeb4f38dcf09cf
方法一:
思路:创建主键 ,所有字段 not null
代码:
create table actor ( actor_id smallint (5) not null, first_name varchar(45) not null, last_name varchar(45) not null, last_update date not null, primary key (actor_id) );