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Full Discussion: Comparing two CSV files
Top Forums Shell Programming and Scripting Comparing two CSV files Post 302974623 by dan139 on Wednesday 1st of June 2016 02:58:51 PM
Old 06-01-2016
Comparing two CSV files

I have two csv files and im trying to compare them. e.g.

SAMPLE DATA:

file one:
Code:
ZipCode            Name
20878             Washington
10023              Missouri
20304              Maryland

file two:
Code:
ID                 Name            City                 ZipCode
11654      Arizona               Phoenix              10001
12343     Washington             DC                   20878
12343     New Hampshire      Concord             20854
54211        Maryland           Silver Spring         20304             
54877       Missouri              St. Louis             10023

SAMPLE OUTPUT:

Code:
12343     Washington             DC                   20878
54211        Maryland           Silver Spring         20304             
54877       Missouri              St. Louis             10023

These 3 rows only display because they are the rows we were looking for from file 1. Basically filtering file2 by zipcode to display all the zipcodes from file 1 but including all the other data components of file 2.

these files have like tens of thousands of rows so I wanted to retrieve all the rows in file 2 that exist with the same zip code in file 1. I thought this would be like an awk command like :

Code:
awk*-F','*'NR==FNR{c[$1]++;next};c[$4] > 0'*file2 file1


Am I not understanding the AWK command or typing something wrong? Comparing field 1 from file 1 to field 4 from file 2.




Moderator's Comments:
Mod Comment Please use code tags as required by forum rules!

Last edited by RudiC; 06-01-2016 at 06:42 PM.. Reason: Added code tags.
 

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