Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: merging without repeat obs in master dataset


From   "Mingfeng Lin" <mingfeng.lin@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: merging without repeat obs in master dataset
Date   Thu, 22 May 2008 22:51:22 -0400

Greetings!

The -merge- command in Stata requires that the variable to merge
uniquely identify observations in the master dataset.  But how should
I merge if the variable I would like to merge on does not uniquely
identify master dataset observations?

For instance:
Master: ID GROUP
(multiple IDs could be in the same group)

Using dataset:   GROUP GROUPDEMOGRAPHICS

I wanted to do
.merge GROUP using ..., sort

error message r(459):  something that should be true of your data is not;

My final dataset should have each ID as an observation. Is there
something I can do to work around this?

Thank you!

Mingfeng
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index