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Top Forums Shell Programming and Scripting Join and merge multiple files with duplicate key and fill void columns Post 303040715 by yjacknewton on Tuesday 5th of November 2019 06:44:56 AM
Old 11-05-2019
The only algo to preserve duplicate data that I found is this:
awk 'BEGIN{FS=OFS="|"}NR==FNR{a[$1]=$0;next;}{print $0,a[$1]}' test*;

Does someone have some idea?
But result is not appropiate...
Code:
1|123|jojo|1|def
1|NULL|bibi|1|def
3|789|zaza|3|pqr
3|012|NULL|3|pqr
2|1a2b|1994|US|2|jkl
3|3c4e|1995|MG|3|pqr
4|5f6g|1996|FR|


Last edited by Scrutinizer; 11-05-2019 at 12:35 PM.. Reason: Replaced " with "
 

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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). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgawk | +--------------------+-----------------+ |Interface Stability | Volatile | +--------------------+-----------------+ NOTES
Source for gawk is available on http://opensolaris.org. Free Software Foundation Nov 3 1999 IGAWK(1)
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