Searching for Empty Field

[Trieu, Jason T]

Hi all,

I read postings about searching for empty field with but did not find any cases 
of successful search using query language syntax itself(-myField:[* TO *] for 
example). I  saw that other techniques like using a filter were used to get 
around this syntax string limitation.   Given that the latest postings on this 
topic were a few years old, I am wondering  if there have been any changes in 
Lucene query syntax to support searching for empty fields.   Has anyone been 
successfully searched for empty fields with recent Lucene releases?

Thanks

Jason