Hi Nissim, This is by design: boolean queries that don't have positive clauses like empty boolean queries or boolean queries that only consist of negative (MUST_NOT) clauses don't match any hits.
On Thu, Nov 5, 2020 at 9:07 PM Nissim Shiman <nshi...@yahoo.com.invalid> wrote: > Hello Apache Lucene team members, > I have found that constructing a BooleanQuery with just > a BooleanClause.Occur.MUST_NOT will return no results. It will return > results is if there is also a BooleanClause.Occur.MUST as part of the query > as well though. > > > I don't see this limitation with a BooleanQuery with just > a BooleanClause.Occur.MUST (i.e. results will return fine if they match). > > Is this by design or is this an issue? > > Thanks You, > Nissim Shiman -- Adrien
