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Top Forums Shell Programming and Scripting Left Join in Unix based on Key? Post 302562552 by stack on Friday 7th of October 2011 09:09:17 AM
Old 10-07-2011
Left Join in Unix based on Key?

So I have 2 files:

File 1:

Code:
111,Mike,Stipe
222,Peter,Buck
333,Mike,Mills



File 2:

Code:
222,Mr,Bono
444,Mr,Edge


I want output to be below, where 222 records joined and all none joined records still in output

Code:
111,Mike,Stipe
222,Peter,Buck,Mr,Bono
333,Mike,Mills
444,Mr,Edge



thanks in advance.


Last edited by radoulov; 10-07-2011 at 11:30 AM.. Reason: Code tags!
 

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SPLIT(1)							   User Commands							  SPLIT(1)

NAME
split - split a file into pieces SYNOPSIS
split [OPTION]... [INPUT [PREFIX]] DESCRIPTION
Output fixed-size pieces of INPUT to PREFIXaa, PREFIXab, ...; default size is 1000 lines, and default PREFIX is `x'. With no INPUT, or when INPUT is -, read standard input. Mandatory arguments to long options are mandatory for short options too. -a, --suffix-length=N use suffixes of length N (default 2) -b, --bytes=SIZE put SIZE bytes per output file -C, --line-bytes=SIZE put at most SIZE bytes of lines per output file -d, --numeric-suffixes use numeric suffixes instead of alphabetic -l, --lines=NUMBER put NUMBER lines per output file --verbose print a diagnostic just before each output file is opened --help display this help and exit --version output version information and exit SIZE may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P, E, Z, Y. AUTHOR
Written by Torbjorn Granlund and Richard M. Stallman. REPORTING BUGS
Report split bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for split is maintained as a Texinfo manual. If the info and split programs are properly installed at your site, the command info coreutils 'split invocation' should give you access to the complete manual. GNU coreutils 7.1 July 2010 SPLIT(1)
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