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st: simple "merge" question


From   Isabelle.Roux@ehess.fr
To   statalist@hsphsun2.harvard.edu
Subject   st: simple "merge" question
Date   Mon, 9 Mar 2009 13:06:09 +0100 (CET)

Hello,

I have two datasets: the first one, called "country" gives some
characteristics of 221 countries (GDP, population...), the second one,
called "safety", contains 24 countries with the variable "safety public
expenditures"

I want to merge these databases, by keeping all the countries. So I write:
...........
use base_pays\country.dta, clear
sort country
merge country using GFS\safety
sort _merge
......

The problem is that Stata accepts to merge (I have no error message), but
indeed my datasets are not merged: the common countries are repeated two
times, and _merge just takes values 1 and 2. So I really don't know what
to do.

Thank you very much for help

Isabelle

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