Date:         Fri, 4 Jan 2008 05:44:19 -0800
Reply-To:     litonchen@GMAIL.COM
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         litonchen@GMAIL.COM
Organization: http://groups.google.com
Subject:      How to calculate month
Comments: To: sas-l@uga.edu
Content-Type: text/plain; charset=ISO-8859-1

I have tw columns as following

YYMM   Num
--------------------
200801   2

2 months before 200801 is 200711

Does SAS provides any solution?