It would be better to give us some more context - its helps with trying to help and answer you question.
I guess you are trying to remove / filter out some data?
This is just guessing on what you maybe wanting to do.
This is an example using make results, this filters the ticket_id=5678 (so apply same princples for your code)
| makeresults | eval _raw="ticket_id, priority,status
123,P1,Closed
5678,,
8765,P2,Closed"
| multikv forceheader=1
| search ticket_id!=5678
| table ticket_id, priority, status
