Splunk Search

Can I add a new column to an existing CSV lookup file?

wtaylor149
Explorer

I have a CSV file I'm using to hold data for use in other searches. This file has 5 columns (AcctNo, user, src_ip, count, Client). There are over 4K rows. This file works just fine in my searches. I was asked to add another column to the file but can't seem to get the file to update with the new column / results.

I'd rather not have to remove the file and rebuild it. I just want to add the new column to the existing CSV file.

I've tried:

|inputlookup myfile.csv | append [subsearch_with_new_results] | outputlookup myfile.csv

Thanks in advance for the help.

0 Karma

woodcock
Esteemed Legend

You need to use appendcols or eval or something else to create new columns (fields); using append creates new rows. Other than that, your approach is fine. Also, you should be aware of the new dataset feature that you could use to manually edit your lookup:
http://docs.splunk.com/Documentation/Splunk/6.5.1/Knowledge/Aboutdatasets

0 Karma

somesoni2
Revered Legend

The direction is correct, but may need tweaking based on how you're adding the additional column. You may have to use appendcols or any other command. Could you post your full query?

0 Karma
Get Updates on the Splunk Community!

Splunk Observability Cloud’s AI Assistant in Action Series: Analyzing and ...

This is the second post in our Splunk Observability Cloud’s AI Assistant in Action series, in which we look at ...

Elevate Your Organization with Splunk’s Next Platform Evolution

 Thursday, July 10, 2025  |  11AM PDT / 2PM EDT Whether you're managing complex deployments or looking to ...

Splunk Answers Content Calendar, June Edition

Get ready for this week’s post dedicated to Splunk Dashboards! We're celebrating the power of community by ...