st: How to merge 2 datasets using 2 unique variables

[Robin Newberry <wnewber@CLEMSON.EDU>]

Folks,

I've 2 datasets I need to merge (one with accident data and one with 
cost data), but the one "unique" variable they have in common (Social 
Security Number) won't work since there are multiple occurrences of 
the same individual. What I need to do is merge on two variables - 
like SSN and accident date - but I can't figure out how to do this in 
Stata. Is there a way, or do I need to merge the datasets outside of 
Stata (in Excel, for example) and import them?.
--
Robin
--------------------------------------------------------------
W. Robert Newberry, IV CIH, CHMM
Chief Environmental Health and Safety Officer
Clemson University

wnewber@clemson.edu  ehs@clemson.edu
http://ehs.clemson.edu/
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/