Splunk macro to remove empty fields

If you have a Splunk query that returns empty fields, you can use this query to programatically remove these blanks.

foreach * [
  | eval maybe<<FIELD>>=<<FIELD>>
  | fields - <<FIELD>>
  | rename maybe<<FIELD>> as <<FIELD>>
]

Happy Splunking!

note: after I created this macro, I realized I could reuse it to remove identical fields which you might also find useful.