Have you seen this page? http://lucene.apache.org/java/docs/queryparsersyntax.html
>From that page: Note: The NOT operator cannot be used with just one term. For example, the following search will return no results: NOT "jakarta apache" Erick On Jan 14, 2008 9:30 AM, Karen Loughran <[EMAIL PROTECTED]> wrote: > > > Hi all, > > We are indexing different types of documents, some with certain fields set > and > some without, some fields sometimes in both. > > If a particular field is missing in a newly added record, I would have > expected the query: > > field_name:(-null) > > not to return this particular record in the response, ie, I'm assuming the > field is set to null. > > But the response we see includes empty docs: > > ...... > .... > .. > <doc> > </doc> > <doc> > </doc> > <doc> > </doc> > etc, etc.... > .. > .... > > Can someone explain why field_name:(-null) returns the records where > field_name is missing ? > > We note that if we do the range operation we can get a response without > the > records with no field_name: > > field_name:[* TO *] > > Many thanks > Karen >
