mySQL--找出各科最高成績

//找出各科最高成績
create table gradeMax(
id int primary key auto_increment,
name varchar(20),
subject varchar(20),
grade int
);

insert into gradeMax(name ,subject ,grade ) values
('小點','java',99),
('小黑','.net',100),
('小軍','職業素養',100),
('小王','語文',78),
('小憋','數學',96),
('小麗','英語',87);

select * from gradeMax
where GRADE =(select max(grade) from gradeMax where name=name);

select subject,max(grade),min(grade),sum(grade),avg(grade),count(grade) from gradeMax group by subject;

主要：
select * from gradeMax where grade in(select max(grade) from gradeMax group by subject);

select * from gradeMax where subject,grade in gradeMax ;