Top Forums Shell Programming and Scripting Join and merge multiple files with duplicate key and fill void columns Post 303040708 by yjacknewton on Tuesday 5th of November 2019 03:23:22 AM
Join and merge multiple files with duplicate key and fill void columns by using AWK

Join and merge multiple files with duplicate key and fill void columns

Hi guys,

I have many files that I want to merge:







My desired output is like this, conserve the duplicate key and fill it with the data of anothers files, and the void columns is filling by NULL:


How to do that with awk, join or shell scripts?

Last edited by yjacknewton; 11-06-2019 at 06:03 AM..
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