lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Erick Erickson" <>
Subject Re: unexpected query results (AND and OR)
Date Fri, 04 Apr 2008 13:47:09 GMT
I believe you must capitalize the AND. lower-case 'and' is ignored.

you could also construct your own BoolenQuery if you wanted.

I recommend  copy of Luke to interactively examine how queries
are parsed. Also, toString is your friend....


On Fri, Apr 4, 2008 at 9:41 AM, Jamie <> wrote:

> Hi there
> I need some help in understanding Lucene's query mechanism. I am receiving
> unexpected query results when combining terms with AND and OR operators. We
> are using Lucene to index emails. Our problem is that when we execute a
> search such as '(from:"") and (to:"")' we are
> receiving results that do not contain both and
> i.e. There are some results containing only or
> The AND operator does not appear to work as expected by requiring both terms
> to appear in the document. We thought about using the lucene score value to
> filter exact matches out but we cannot do this as documents with even scores
> around 70% are applicable. Are we using Lucene in the wrong way? Is there
> something that we are missing?
> Thanks in advance
> Jamie
> ---------------------------------------------------------------------
> To unsubscribe, e-mail:
> For additional commands, e-mail:

  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message