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Re: st: recognizing patterns within two columns of data


From   Austin Nichols <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: recognizing patterns within two columns of data
Date   Wed, 6 Jul 2011 10:30:40 -0400

Dalhia <ggs_da@yahoo.com> :
Do you want to make an identifier as in
http://www.stata.com/statalist/archive/2011-07/msg00170.html
?

On Wed, Jul 6, 2011 at 10:12 AM, Dalhia <ggs_da@yahoo.com> wrote:
> Hello,
>
> I would like some advice on how to do the following. Here is how the data looks:
>
> compA holderA
> compB holderA
> compC holderL
> compD holderH
> compA holderB
> compB holderB
> compC holderB
>
> Above, there was more than one instance where compA and compB had the same holder. In a large database, how do I identify instances where a set of comps appear repeatedly with the same holders?
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