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From Markus Jelsma <markus.jel...@openindex.io>
Subject Re: dismax 1.4.1 and pure negative queries
Date Thu, 17 Mar 2011 20:45:37 GMT
Oh i see, i overlooked your first query. A query with one term that is negated 
will yield zero results, it doesn't return all documents because nothing 
matches. It's, if i remember correctly, the same as when you're looking for a 
field that doesn't have a value: q=-field:[* TO *].

> My fault for putting in the quotes in the email, I actually don't have
> tests in my quotes, just tried again to make sure.
> 
> And I always get 0 results on a pure negative Solr 1.4.1 dismax query. I
> think it does not actually work?
> 
> On 3/17/2011 3:52 PM, Markus Jelsma wrote:
> > Hi,
> > 
> > It works just as expected, but not in a phrase query. Get rid of your
> > quotes and you'll be fine.
> > 
> > Cheers,
> > 
> >> Should 1.4.1 dismax query parser be able to handle pure negative queries
> >> like:
> >> 
> >> &q="-foo"
> >> &q="-foo -bar"
> >> 
> >> It kind of seems to me trying it out that it can NOT.  Can anyone else
> >> verify?  The documentation I can find doesn't say one way or another.
> >> Which is odd because the documentation for straight solr-lucene query
> >> parser athttp://wiki.apache.org/solr/SolrQuerySyntax  suggests that
> >> straight solr-lucene query parser_can_  handle pure negative.  That
> >> seems odd that solr-lucene Q.P. can, but dismax can't? Maybe I'm
> >> misinterpreting or misunderstanding my experimental results.

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