win8装sql server2012 需要framework3.5，电脑里有framework4.0，没用么，每次都要装framework3.5半天
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http://jingyan.baidu.com/article/19020a0a251102529d284231.html
http://www.win7china.com/html/19697.html
http://www.ithome.com/html/win8/12280.htm
忘了当初用哪个方法的