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求圣人!

发布时间: 2012-08-13 13:21:53 作者: rapoo

求高人!!!
怎么样才查出哪些行参与了平均数计算?

平均数的计算方法是:(先算的是a的并且在范围内的平均值,b是比例,然后是统计)

SQL code
SELECT  [name], AVG(a) as a, SUM(CASE WHEN b<=5 THEN 1 ELSE 0 END) * 100.0 / COUNT(b) AS bFROM  taGROUP BY namehaving AVG(a)>'1'UNION ALL SELECT  '统计', AVG(a) as a,AVG(b) as bFROM(SELECT  [name], AVG(a) as a, SUM(CASE WHEN b<=5 THEN 1 ELSE 0 END) * 100.0 / COUNT(b) AS bFROM  taGROUP BY namehaving AVG(a)>'1')ta


数据库是:数据随意

name a b


[解决办法]
那些行是什么意思?

满足条件的行都参加了啊

SQL code
select * from tawhere name in(SELECT  [name]FROM  taGROUP BY namehaving AVG(a)>1) 

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