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st: RE: -save- with emptyok


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: -save- with emptyok
Date   Sun, 11 Feb 2007 16:52:53 -0000

The issue here is not with -save-, but with -append-. 

-append- needs something more than almost nothing 
to join on to. I think you need to -save- your dataset
with variables (even though there are no observations). 
Fortunately, a token variable is sufficient (but evidently 
necessary). 

. clear
. gen completeanduttergarbage = . 
. save empty, emptyok 
. append using auto
. drop completeanduttergarbage 

Admittedly, the error message here does not indicate
the problem. 

Nick 
n.j.cox@durham.ac.uk 

Partha Deb
 
> I'm having trouble getting -save- to work with emptyok in the 
> way I think it 
> should.  Here's an example.
> 
> . save temp, emptyok
> (note: dataset contains 0 observations)
> file temp.dta saved
> 
> . use temp.dta
> 
> . append using auto.dta
> no dataset in use
> r(3);
> 
> 
> Shouldn't I be able to append?  What am I doing wrong?  I'm 
> using Stata 9.2. 

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