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st: RE: Requirement(s) for a match merge
Let's turn this round. If this is not true,
how do you expect match merge to work?
> Is it true that "for a match merge to work, the identifier or
> must uniquely identify each observation"? I found this
> statement in sample
> lecture NC 101 (one of StataCorp's NetCourses), but I thought
> that this
> requirement (of the id uniquely identifying each observation)
> is often
> desirable, but not necessary in all cases. Any insights will
> be appreciated.
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