Can you provide commented, minimal, self-contained, reproducible code.
You can check out 'duplicated' to remove duplicates.

On Tue, May 12, 2009 at 7:06 AM, Xin Shi <jasonshi510@hotmail.com> wrote:

> Dear:
>
>
>
> I am trying to merge two tables by a common variable. However, there are a
> few same variables which are in both of two tables. How can I take them
> away
> when I merge the two tables?
>
>
>
> Thanks!
>
>
>
> Xin
>
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>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

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