Splunk Search

lookup field value case sensitivity

constantinetamp
Observer

While field values are not case sensitive by default on Splunk, when we use lookups the default setting for the field values is to be case sensitive.

I can't think of any valid use case of that inconsistency, is there any reason that I could possibly be missing?

note: I am aware that you can overwritte the case sensitivity setting when importing a lookup, I am merely wondering why doen't the default option for lookup field values align with the overall Splunk logic of field values being non case sensitive.

0 Karma

to4kawa
Ultra Champion

https://docs.splunk.com/Documentation/Splunk/latest/SearchReference/Lookup

Syntax:

lookup [local=<bool>] [update=<bool>] <lookup-table-name> ( <lookup-field> [AS <event-field>] )... [ OUTPUT | OUTPUTNEW (<lookup-destfield> [AS <event-destfield>] )... ]

the default setting for the field values is to be case sensitive.
What are you talking about?

0 Karma

constantinetamp
Observer

well what you pasted above is exactly the same thing as I'm stating on my question.

0 Karma

to4kawa
Ultra Champion
0 Karma

constantinetamp
Observer

I'm talking about the field values in lookups being case sensitive, the terms fieldname and fieldvalue in the lookup command that you're referring to are irrelevant to my question

0 Karma

to4kawa
Ultra Champion

While field values are not case sensitive by default on Splunk
this is wrong assumption.

0 Karma

constantinetamp
Observer

It clearly isn't an assumption that field values are case insentivite and that field names are case sensitive on Splunk, that's clearly stated on the official Splunk documentation, and it's definitely not a wrong one:

https://answers.splunk.com/answers/65/are-field-values-case-sensitive.html

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!

May 2026 Splunk Expert Sessions: Security & Observability

Level Up Your Operations: May 2026 Splunk Expert Sessions Whether you are refining your security posture or ...

Network to App: Observability Unlocked [May & June Series]

In today’s digital landscape, your environment is no longer confined to the data center. It spans complex ...

SPL2 Deep Dives, AppDynamics Integrations, SAML Made Simple and Much More on Splunk ...

Splunk Lantern is Splunk’s customer success center that provides practical guidance from Splunk experts on key ...