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List:       sas-l
Subject:    Re: Modify By
From:       Xia Keshan <12135835 () QQ ! COM>
Date:       2015-09-30 2:30:32
Message-ID: 0442481486967818.WA.12135835qq.com () listserv ! uga ! edu
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I would not recommend to use MODIFY. There are some disadvantage for it. =
If you can , use MERGE or UPDATE to replace it .
For your scenario, you need a special system variable  _iros_  to judge m=
any condition. Check SAS Documentation.



Ksharp
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