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From Erick Erickson <erickerick...@gmail.com>
Subject Re: Reason Why Query Does Not Work
Date Tue, 18 Sep 2018 18:56:24 GMT
Also, Solr does _not_ implement strict Boolean logic, although with
appropriate parentheses you can get it to look like Boolean logic.
See: https://lucidworks.com/2011/12/28/why-not-and-or-and-not/.

Additionally, for _some_ clauses a pure-not query is translated into
*:* -pure_not_query which is helpful, but occasionally confusing.

Best,
Erick
On Tue, Sep 18, 2018 at 11:43 AM Alexandre Rafalovitch
<arafalov@gmail.com> wrote:
>
> Have a look at what debug shows in the parsed query. I think every
> bracket is quite significant actually and you are generating a
> different type of clause.
>
> Also, have you thought about putting those individual clauses into
> 'fq' instead of jointly into 'q'? This may give you faster search too,
> as Solr will not have to worry about ranking.
>
> Regards,
>    Alex.
>
> On 18 September 2018 at 14:38, Antelmo Aguilar <aaguilar@nd.edu> wrote:
> > Hi,
> >
> > I am doing some date queries and I was wondering if there is some way of
> > getting this query to work.
> >
> > ( ( !{!field f=collection_date_range op=Within v='[2000-01-01 TO
> > 2018-09-18]'} AND !{!field f=collection_date_range op=Within v='[1960-01-01
> > TO 1998-09-18]'} ) AND collection_season:([1999-05 TO 1999-05]) )
> >
> > I understand that I could just not do NOT queries and instead search for
> > 1998-09-18 TO 2000-01-01, but doing NOT queries gives me more results (e.g
> > records that do not have collection_date_range defined).
> >
> > If I remove the parenthesis enclosing the NOT queries, it works.  Without
> > the parenthesis the query does not return results though.  So the query
> > below, does work.
> >
> > ( !{!field f=collection_date_range op=Within v='[2000-01-01 TO
> > 2018-09-18]'} AND !{!field f=collection_date_range op=Within v='[1960-01-01
> > TO 1998-09-18]'} AND collection_season:([1999-05 TO 1999-05]) )
> >
> > Any insight would be appreciated.  I really do not see the reason why the
> > parenthesis enclosing the NOT queries would cause it to not return results.
> >
> > Best,
> > Antelmo

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