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Re: bug in join

From: Jim Meyering
Subject: Re: bug in join
Date: Wed, 26 Feb 2003 15:13:37 +0100

"Haidong Wang" <address@hidden> wrote:
> With following two simple files:
> test1:
> a     f
> b     h
> c     g
> test2:
> 1     b
> 2     g
> c     6
> join -j 2 test1 test2
> gives the wrong result which is nothing.
> The correct result should be:
> G     c       2

Thank you for the report, but that is not a bug.
The input files must be sorted on the respective fields
used to perform the join operation, and neither of those
files is properly sorted.

Since I see you've used a TAB to separate the fields,
you should sort each of those files using `sort -k2,2b'.
Then your command would produce this output:

g c 2

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