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Re: st: Adding variables to datasets


From   Eric Booth <ebooth@ppri.tamu.edu>
To   "<statalist@hsphsun2.harvard.edu>" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Adding variables to datasets
Date   Sun, 17 Jul 2011 19:41:13 +0000

<>

See -help merge-.  

- Eric
__
Eric A. Booth
Public Policy Research Institute
Texas A&M University
ebooth@ppri.tamu.edu

On Jul 17, 2011, at 2:36 PM, <mmolina@uniroma3.it>
 wrote:

> Dear Statalist,
> 
> I'd need to combine three datasets.
> 
> For the first two, I do:
> 
> use filename
> 
> append using filename
> 
> and it's fine. Now I'd like to add only one variable from a third dataset.
> This variables matches with id from the previous two (it is a new variable
> about observation id from a previous year).
> 
> I tried again with 'append using filename' but it generates too many
> missing values.
> 
> Could you please help me?
> 
> Thanks,
> 
> Maria
> 
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