获得每个科目的名称,考试人数,最高分,最低分和平均分
2014-10-25 21:21:45 访问(1724) 赞(0) 踩(0)
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select c.TheName,r.CountValue as '考试人数',
r.MaxValue as '最高分', r.MinValue as '最低分',r.AvgValue as '平均分'
from
(
select c.ID, count(sc.ID) as countValue,
max(sc.score) as maxValue,min(sc.score) as MinValue,avg(sc.score) as AvgValue
from
UTB_EXAM_COURSE c,
UTB_EXAM_SCORE sc
where
c.ID = sc.CourseId
group by c.ID
)r,
UTB_EXAM_COURSE c
where
c.ID = r.ID
order by c.TheName
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获得每个科目的名称,考试人数,最高分,最低分和平均分 


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