How to display default value in rex statements if the value is blank?

[manojchacko78]

Hi,

I am using the following script in Splunk query. Here i am trying having multiple values in field AdditionalData

and splitting them to extract the fields and writing to separate fields. Now if there is any blank value, in any of these extract fields, i want to have the default value appear as Not Available. 

Thanks in advance

| eval "AddtionalData"=if(isnotnull('cip:AuditMessage.ExtraData'),'cip:AuditMessage.ExtraData',"Not Available")
| rex field=AddtionalData "Legal employer name:(?<LegalEmployerName>[^,]+)"
| rex field=AddtionalData "Legal entity:(?<LegalEntity>[^,]+)"
| rex field=AddtionalData "Country:(?<Country>[^,]+)"
| rex field=AddtionalData "Business unit:(?<BusinessUnit>[^,]+)"

[manojchacko78]

Thanks a lot @gcusello. You are an angel 🙂

[gcusello]

Hi @manojchacko78,

good for you, see next time!

Ciao and happy splunking

Giuseppe

P.S.: Karma Points are appreciated 😉

[gcusello · Accepted solution]

Hi @manojchacko78,

yu could try fill null:

<your_search>
| eval "AddtionalData"=if(isnotnull('cip:AuditMessage.ExtraData'),'cip:AuditMessage.ExtraData',"Not Available")
| rex field=AddtionalData "Legal employer name:(?<LegalEmployerName>[^,]*)"
| rex field=AddtionalData "Legal entity:(?<LegalEntity>[^,]*)"
| rex field=AddtionalData "Country:(?<Country>[^,]*)"
| rex field=AddtionalData "Business unit:(?<BusinessUnit>[^,]*)"
| fillnull value="Not  Available" LegalEmployerName
| fillnull value="Not  Available" LegalEntity
| fillnull value="Not  Available" Country
| fillnull value="Not  Available" BusinessUnit

remember in your regexes, to use "*" instead "+" when you could have no values.

Ciao.

Giuseppe