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Re: st: re: merging datasets and getting different N in resulting dataset if I


From   Woolton Lee <finished07@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: re: merging datasets and getting different N in resulting dataset if I
Date   Fri, 14 Aug 2009 11:28:31 -0400

not sure what you mean by N:N merges.

Woolton

On Fri, Aug 14, 2009 at 10:48 AM, Kit Baum<baum@bc.edu> wrote:
> <>
> This is a FAQ. Avoid N:N merges, for one thing; their results are
> unpredictable. When you sort the datasets (as you must prior to Stata 11) by
> the merge keys, use the stable option on the sort command.
>
> Kit
>
> Kit Baum   |   Boston College Economics & DIW Berlin   |
> http://ideas.repec.org/e/pba1.html
>                              An Introduction to Stata Programming  |
> http://www.stata-press.com/books/isp.html
>   An Introduction to Modern Econometrics Using Stata  |
> http://www.stata-press.com/books/imeus.html
>
>
>
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