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st: merge strategy


From   Dimitri Szerman <[email protected]>
To   statalist <[email protected]>
Subject   st: merge strategy
Date   Wed, 19 Jan 2011 19:52:17 +0000

Hello,

I'm merging two data sets on a varlist -- say v1 v2 v3. Sometimes
there's a mismatch because of a problem in v3, so for a given v1 v2 v3
I might end up with, say, 5 observation with _merge==3; 1 observation
with _merge==1; and 1 observation with _merge==2. *I know* that the
two unmatched observation should actually match -- in one of the
datasets, there was a problem in v3. Any ideas on how to correct this
in a concise and robust way?

Many thanks,
Dimitri
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