topic splunk eval case statement compare the case-sensitive value or case-insensitive in Splunk Search

splunk eval case statement compare the case-sensitive value or case-insensitive

Chandras11 — Wed, 09 May 2018 09:15:04 GMT

Hi Everyone,

I have a very small conceptual doubt. Does the eval case do case insensitive compare or will it compare the exact values (Case sensitive only)? I need a case-insensitive comparison here.

LINE_CODE value examples:- AMx05323, amy4bl124, bmz4265678 etc. If the first Character is a or A (case insensitive "a", it should return Atlanta otherwise it should return Other.

Do the following 2 statements will provide the same results or different.

| eval REGION_ID = (substr(LINE_CODE,1,1)="a") OR (substr(LINE_CODE,1,1)="A")) ,"Atlanta", 1=1,"Other")

and

| eval REGION_ID = substr(LINE_CODE,1,1)="a"  ,"Atlanta" , 1=1," Other")

Thanks for your time.

Re: splunk eval case statement compare the case-sensitive value or case-insensitive

FrankVl — Wed, 09 May 2018 09:24:02 GMT

That's easy enough to test:

| makeresults
| eval LINE_CODE="Abcd"
| append [
| makeresults
| eval LINE_CODE="abcd"
]
| eval REGION_ID = case(substr(LINE_CODE,1,1)="a","Atlanta", 1=1," Other")

Which results in:

LINE_CODE   REGION_ID
Abcd    Other
abcd    Atlanta

Conclusion: it is case sensitive. To make it insensitive, simply cast to lowercase before testing:

| eval REGION_ID = case(lower(substr(LINE_CODE,1,1))="a","Atlanta", 1=1," Other")

Re: splunk eval case statement compare the case-sensitive value or case-insensitive

Chandras11 — Tue, 29 Sep 2020 19:29:49 GMT

Perfect, thanks for the explanation. is there any way to remove if there is a blank space in from of LINE_CODE for example:- LINE_CODE = " Abrd"

Re: splunk eval case statement compare the case-sensitive value or case-insensitive

FrankVl — Wed, 09 May 2018 09:32:15 GMT

Take a look at the trim() command: http://docs.splunk.com/Documentation/Splunk/7.0.1/SearchReference/TextFunctions#trim.28X.2CY.29

Re: splunk eval case statement compare the case-sensitive value or case-insensitive

Chandras11 — Wed, 09 May 2018 09:34:52 GMT

Thanks a lot.. It looks like the excel TRIM function. 🙂 I can go ahead easily now

Re: splunk eval case statement compare the case-sensitive value or case-insensitive

woodcock — Thu, 10 May 2018 05:29:40 GMT

By default, the lookups are case-insensitive but if you create a Lookup definition mapped to your Lookup file then you can specify MANY things, including case-sensitive vs. case-insensitive and also WILDCARD and CIDR based fields.