2022 老男孩大厂DBA直通班首期

除student

drop table student

//创建数据库表-学生成绩表

create table student(id int primary key auto_increment,name varchar(20) unique not null,chinese float,english float,math float);

//添加几条数据

insert into student values(1,’张三’,90,80,80);

insert into student values(2,’李四’,90,87,60);

insert into student values(3,’王五’,70,60,69);