On Fri, Aug 14, 2009 at 4:46 PM, Woolton Lee<[email protected]> wrote:
> The id variables do not uniquely identify observations in the master
> or using dataset.
This will be a problem, you might want to consider using the -joinby-
command as opposed to -merge-
I _very_ much doubt it is a bug in the -merge- command, its almost
definitely an artefact of your data.
Neil
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