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作者 新手问一个关于sql的问题
sampos





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于 2006-04-18 19:44 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
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我的数据库表里面有个字段为生日(只有生日没有年龄字段,生日是datetime类型),我想查比如年龄从20到30岁之间的人怎么查? 请高手用sql帮我举个例子,不胜感激


作者 Re:新手问一个关于sql的问题 [Re:sampos]
liminhy





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于 2006-06-19 16:04 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
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其实就是年数相减啊。。。。。

举个统计个数的例子把:

20到30数的人有多少。。。。

select count(*)
from dbo.A001
where (year(getdate())-year(dbo.A001.A00111)>20) AND (year(getdate())-year(dbo.A001.A00111)<30)


why edited on 2006-06-19 19:55

作者 Re:新手问一个关于sql的问题 [Re:sampos]
why

問題兒童

总版主


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于 2006-06-19 19:59 user profilesend a private message to usersend email to whysearch all posts byselect and copy to clipboard. 
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something like
birthdate between dateadd(yyyy, -20, getdate()) and dateadd(yyyy, -30, getdate())



作者 Re:新手问一个关于sql的问题 [Re:sampos]
min_li168





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于 2006-08-02 11:23 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
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where datediff(year,birthday,getdate())>20 and datediff(year,birthday,getdate())<30

这样试试。




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