Date: Sat, 14 Jul 2012 19:27:55 -0400
Reply-To: bbser 2009 <bbser2009@GMAIL.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: bbser 2009 <bbser2009@GMAIL.COM>
Subject: getting rid of redundant records from database
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I have a concern regarding how a database manages or updates it's records.
My raw data come from monthly dumps of a database. So there are a lot of
I would like to distill it by finding the first occurrence of each primary
key value. Is this method reliable?
I am worrying about two records from two months with the same primary key
value might be different. If this were true, then I would lose data by
distilling the raw data that way.
Any comments or suggestions are welcome! Thank you.