Splunk Search

comparing data from index and input table

60150134
New Member

Hi Everyone,

Thanks for your support too.

I have indexed data of staff events from a source. One field in that data is "Surname".

I have an input table of all staff, field 1 is "Surname".

Please can you help me to report on all staff names from the input CSV that do not have events in the indexed data?

Thank you so much!

0 Karma

jpolvino
Builder

Something like this might help.

(your indexed search that returns Surname)
| stats count AS SurnameCount by Surname
| inputlookup staff_lookup.csv append=true
| chart sum(surnameCount) as abc by Surname
| eval abc=if(isnotnull(abc),abc,0)
| where abc=0

This uses a sentinel value concept, better explained here: https://conf.splunk.com/session/2015/conf2015-LookupTalk.pdf on slide 25

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Casting Call: Compete in Cyber Games

Lights, Camera, SecOps: Apply to Compete in Cyber Games     Think you have what it takes to beat the clock? ...

Data Management Digest – June 2026

Welcome to the June 2026 edition of Data Management Digest! This month’s update is short and sweet, with a ...

Think Like an Architect: Introducing the Splunk Certified Cybersecurity Defense ...

In cybersecurity, defenders respond to threats. Architects design the systems that stop them.    As ...