On Tue, 10 Nov 2009 15:53:32 -0600, Joe Matise <snoopy369@GMAIL.COM> wrote:

>Of course, I was using union as it was shorter for the example :) Though >Union All will allow duplicates. > >-Joe > >On Tue, Nov 10, 2009 at 3:50 PM, Cornel Lencar ><clencar@interchange.ubc.ca>wrote: > >> Thank you for the clarification. I am doing that just now and I'll see if >> it is working (it should). I am using a data step wit a set statement >> rather than union, because there are duplicates. >>

Apparently I still have to work with the small files one by one and then aggregate the results into a final file, due to considerations of size of files and space on the server