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Top Forums Shell Programming and Scripting Joining files using awk not extracting all columns from File 2 Post 302970537 by venkat_reddy on Thursday 7th of April 2016 05:04:02 PM
Old 04-07-2016
Joining files using awk not extracting all columns from File 2

Hello All

I'm joining two files using Awk by Left outer join on the file 1

File 1

Code:
1 AA
2 BB
3 CC
4 DD

File 2

Code:
1 IND 100 200 300
2 AUS 400 500 600
5 USA 700 800 900

Below is the command used to do the left outer join:

Code:
awk 'NR==FNR{A[$1]=$2;next}{print$0 FS (A[$1]?A[$1]:"missing")}' file2 file1

Below is the output:
Code:
1 AA  IND
2 BB AUS
3 CC missing
4 DD missing

If you see, only first column from File 2 is being extracted and other columns are being ignored.

Any thoughts?

Thanks in advance.

Last edited by Scrutinizer; 04-08-2016 at 03:01 AM.. Reason: quote tags of input file -> code tags
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)
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