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1. ¼ÆËãÿ¸öÈ˵Ä×ܳɼ¨²¢ÅÅÃû
select name,sum(score) as allscore from stuscore group by name order by allscore
2. ¼ÆËãÿ¸öÈ˵Ä×ܳɼ¨²¢ÅÅÃû
select distinct t1.name,t1.stuid,t2.allscore from stuscore t1,
(
select stuid,sum(score) as allscore from stuscore group by stuid
)t2
where t1.stuid=t2.stuid
order by t2.allscore desc
3. ¼ÆËãÿ¸öÈ˵¥¿ÆµÄ×î¸ß³É¼¨
select t1.stuid,t1.name,t1.subject,t1.score from stuscore t1,
(
select stuid,max(score) as maxscore from stuscore group by stuid
) t2
where t1.stuid=t2.stuid and t1.score=t2.maxscore
4.¼ÆËãÿ¸öÈËµÄÆ½¾ù³É¼¨
select distinct t1.stuid,t1.name,t2.avgscore from stuscore t1,
(
select stuid,avg(score) as avgscore from stuscore group by stuid
) t2
where t1.stuid=t2.stuid
5.Áгö¸÷Ãſγ̳ɼ¨×îºÃµÄѧÉú
select t1.stuid,t1.name,t1.subject,t2.maxscore from stuscore t1,
(
select subject,max(score) as maxscore from stuscore group by subject
) t2
where t1.subject=t2.subject and t1.score=t2.maxscore
6.Áгö¸÷Ãſγ̳ɼ¨×îºÃµÄÁ½Î»Ñ§Éú
select distinct t1.* from stuscore t1
where t1.stuid in
(select top 2 stuscore.stuid from stuscore where subject = t1.subject order by score desc)
order by t1.subject
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price IS NULL THEN
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WHEN
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'Very Reasonable Title'
WHEN
price >= 10 AND
price < 20 THEN
'Coffee Table Title'
EL ......
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