Splunk Search

Error while creating eval expression for calculated fields in data models

pdantuuri0411
Explorer

I have a data model and defined about 5 fields. But one of the fields doesnt always have a value. I want it to show as "null" when there is no value in the log. So for this particular field, I created it as a calculated field(systemid) and gave an eval expression systemid=if(isnull(systemid),"NULL",systemid). Now I get the error "Error in 'eval' command: Fields cannot be assigned a boolean result. Instead, try if([bool expr], [expr], [expr])."

0 Karma

richgalloway
SplunkTrust
SplunkTrust

What you have should work. Try this alternative, however: systemid = coalesce(systemid, "NULL").

---
If this reply helps you, Karma would be appreciated.
0 Karma

pdantuuri0411
Explorer

Thank you for the reply @rickgalloway

I just copy pasted systemid = coalesce(systemid, "NULL") in eval expression in calculated fields and I get the same error Error in 'eval' command: Fields cannot be assigned a boolean result. Instead, try if([bool expr], [expr], [expr]).

Regards.

0 Karma
Get Updates on the Splunk Community!

.conf24 | Registration Open!

Hello, hello! I come bearing good news: Registration for .conf24 is now open!   conf is Splunk’s rad annual ...

Splunk is officially part of Cisco

Revolutionizing how our customers build resilience across their entire digital footprint.   Splunk ...

Splunk APM & RUM | Planned Maintenance March 26 - March 28, 2024

There will be planned maintenance for Splunk APM and RUM between March 26, 2024 and March 28, 2024 as ...