摘要:
描述 题目已经先执行了如下语句: drop table if exists actor; CREATE TABLE actor ( actor_id smallint(5) NOT NULL PRIMARY KEY, first_name varchar(45) NOT NULL, last_nam 阅读全文
摘要:
描述 题目已经先执行了如下语句: drop table if exists actor; CREATE TABLE actor ( actor_id smallint(5) NOT NULL PRIMARY KEY, first_name varchar(45) NOT NULL, last_nam 阅读全文