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求好人

发布时间: 2012-08-09 15:59:21 作者: rapoo

求救,求好人!
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


表里的数据
name a b
001 1 2
001 5 6
001 2 3
002 1 2
002 3 2
003 2 2
平均和比例的结果
name a b
001 2.66666666666667 66.666666666666
002 2 100.000000000000
003 2 100.000000000000
统计 2.22222222222222 88.888888888888


我不是要求平均值啊!!!

我平均值的计算现在是这个写法

我现在想知道的是::::参与我这个平均值计算的[color=#0000FF]行有哪些,然后把这下行查出来[/color]!

[解决办法]
SQL code
select * from tbwhere name in(select name from(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)t)
[解决办法]
把AVG去掉就行了
[解决办法]
去掉所有avg就可以了

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