1.相关数据表
score表
[user]表
sql语句如下：
复制代码 代码如下:
–查询出各科成绩最好的学生信息
–自连接
–select top 1 * from score b where b.scorename = ‘数学’ order by b.score desc
select a.id,u.name,a.scorename,a.score
from score a,[user]u
where uid in (select top 1 uid
from score b
where b.scorename = a.scorename
order by b.score desc) and a.uid=u.id
order by a.scorename, a.score desc
查询结果如下图：