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Re: st: merge problem

From   Nick Cox <>
Subject   Re: st: merge problem
Date   Fri, 21 Sep 2012 14:25:41 +0100

The display formats are immaterial here; the difference is presumably
in variable or storage type.


On Fri, Sep 21, 2012 at 2:22 PM, Jerome Fauconnier
<> wrote:

> I have just understood : my old variable "numven" exists in the two files, but in two different formats.
> So, it cannot be merged !
> Thank you

Le 21 sept. 2012 à 15:08, Jerome Fauconnier a écrit :

>> I am using Stata 12.
>> I have two files that I want to merge with a new variable "numhosp" which I have just created from a existing variable "numven".
>> When I try to merge the two files with the following command :
>> "merge 1:1 numhosp using lamda2011"
>> I have got the following error message :
>> "numven is double in using data"
>> I don't use "numven" in the merge command. Why is it taken in account?

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