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Jian,
Glad to help. Now for the 2nd part of your question - may I suggest you
look at some code produced by Karsten Self -
TIP00256 - "fuzzy" matching for cases like this where there are common
fields, but not necessary exact matches within the field by Karsten Self
This should give you a guide into your 2 part question
http://www.sconsig.com/sastips/tip00256.htm
HTH,
Charles Patridge
Charles Patridge
PDPC, Ltd.
172 Monce Road
Burlington, CT 06013
Home: 860-673-9278 or 860-675-9026
Email (Home): Charles_S_Patridge@prodigy.net
SAS CONSIG Web Site http://www.sconsig.com
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