Additionally, I should have mentioned that you can instead do:
fq=field_3:[* TO *], which uses the filtercache.

The method presented by Chris will probably outperform the above method but
only on the first request, from then on the filtercache takes over.
>From a performance standpoint it's probably not worth going the 'default
value for null-approach' imho.
It IS useful however if you want to be able to query on docs with a
null-value (instead of excluding them)


2010/6/4 bluestar <sea...@butterflycluster.net>

> nice one! thanks.
>
> >
> >> i could be wrong but it seems this
> >> way has a performance hit?
> >>
> >> or i am missing something?
> >
> > Did you read Chris's message in http://search-lucene.com/m/1o5mEk8DjX1/
> > He proposes alternative (more efficient) way other than [* TO *]
> >
> >
> >
> >
>
>
>

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