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Full Discussion: Compare 2 csv files by columns, then extract certain columns of matcing rows
Top Forums Shell Programming and Scripting Compare 2 csv files by columns, then extract certain columns of matcing rows Post 302904239 by Akshay Hegde on Tuesday 3rd of June 2014 04:41:27 AM
Old 06-03-2014
There is no match except header in current example try this

Code:
awk -F, '
	FNR==NR{
		# Read file3

		# Loop through fields...
		  for(i=1;i<=NF;i++)
		   {
			if(i < 4 || ( i > 6 && i < 12 ) || i>12)
			{
				# Array A with index key offer,category,brand,company
                                key = $12 FS $4 FS $6 FS $5

				# All column except 12,4,6,5 are array element with OFS being comma
				A[key] = A[key] ? A[key] OFS $i : $i	
			}
		   }
			next
	        }
	
	# read file4, if exact match print
	(($1 FS $2 FS $6 FS $4) in A) \
		{ 
			print $0, A[$1 FS $2 FS $6 FS $4] 
		}
      ' OFS="," file3 file4

Last edited by Akshay Hegde; 06-03-2014 at 05:53 AM..
This User Gave Thanks to Akshay Hegde For This Post:
bkane3
 

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OCR4GAMERA(1)															     OCR4GAMERA(1)

NAME

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