Splunk Search

how to add a new column to existing inputlookup

james_n
Path Finder

Hi Experts,

Hi have existing inputlookup file like test.csv which contains 3 fields like host source sourcetype, i want to add extra one new filed called _time with these 3 fields. I have tried with basesearch | table host source soursetype _time|outputlookup test.csv append=true but new field is not appending

for example if I have this existing csv file contains 100 rows, then these 3 fileds along with new filed results shold be added from 101th row onwards in the csv. Plz help on this and thanks in advance.

0 Karma

richgalloway
SplunkTrust
SplunkTrust

I think you need to re-write the entire CSV so the header has the new field name.

| inputlookup test.csv
| append [ basesearch ]
| dedup host source sourcetype
| table host source sourcetype _time
| outputlookup test.csv

The dedup command presumes you want unique tuples in your lookup file. If that's not the case, remove dedup.

---
If this reply helps you, Karma would be appreciated.
Get Updates on the Splunk Community!

Index This | What is broken 80% of the time by February?

December 2025 Edition   Hayyy Splunk Education Enthusiasts and the Eternally Curious!    We’re back with this ...

Unlock Faster Time-to-Value on Edge and Ingest Processor with New SPL2 Pipeline ...

Hello Splunk Community,   We're thrilled to share an exciting update that will help you manage your data more ...

Splunk MCP & Agentic AI: Machine Data Without Limits

Discover how the Splunk Model Context Protocol (MCP) Server can revolutionize the way your organization uses ...