eval parsing issue?

[mwibowo1]

index=xyz CurrentAgentSnapshot.Contacts{}.State=ENDED | table CurrentAgentSnapshot.Contacts{}.StartTime There is no issue with this.
but it gives me error when i try to do eval x = CurrentAgentSnapshot.Contacts{}.StartTime (the error is Error in 'eval' command: The expression is malformed.)

I need to do some calculation using eval on some of the variables CurrentAgentSnapshot.Contacts{}.variables .. such as
eval startTime = strptime(CurrentAgentSnapshot.Contacts{}.StartTime, "%Y-%m-%dT%H:%M:%S.%3N") |
eval endTime = strptime(CurrentAgentSnapshot.Contacts{}.EndTime, "%Y-%m-%dT%H:%M:%S.%3N") |
eval diff = tostring((endTime - startTime), "duration")

[somesoni2]

Your field names contains special characters (dot, curly braces) so you need to enclose them in single quotes when using it on right side of expressions in eval (or in where clause). Try like this

index=xyz CurrentAgentSnapshot.Contacts{}.State=ENDED|
eval startTime = strptime('CurrentAgentSnapshot.Contacts{}.StartTime', "%Y-%m-%dT%H:%M:%S.%3N") |
eval endTime = strptime('CurrentAgentSnapshot.Contacts{}.EndTime', "%Y-%m-%dT%H:%M:%S.%3N") | 
eval diff = tostring((endTime - startTime), "duration") 

[mwibowo1]

thanks - that works... also | rename CurrentAgentSnapshot.Contacts{}.StartTime as StartTime works as well (just to share the knowledge)

[HiroshiSatoh]

I do not know whether it is a bug or specification
It is a workaround.

Even if you set the field name "{}", "{}" seems to have been deleted, so delete "{}" if you use it with EVAL.
Please do not forget to enclose it with a single quotation.

| makeresults | eval CurrentAgentSnapshot.Contacts{}.StartTime="2018-05-24T01:02:03.004"
| eval startTime = strptime('CurrentAgentSnapshot.Contacts.StartTime', "%Y-%m-%dT%H:%M:%S.%3N")

[mwibowo1]

sorry - the workaround does not work... i try to remove the {} but the result does not show up..

[HiroshiSatoh]

I fixed the answer. Instead of deleting from the field name, delete it when using it with EVAL.

[mwibowo1]

sorry - i cannot delete the {} , the data does not show up.

[mwibowo1]

it seems like the eval operation cannot parse the json array {} .. please help