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From Erick Erickson <>
Subject Re: When is/should qf different from pf?
Date Mon, 28 Oct 2013 10:35:33 GMT
The facetious answer is "when phrases aren't important in the fields".
If you're doing a simple boolean match, adding phrase fields will add
expense, to no good purpose etc. Phrases on numeric
fields seems wrong.


On Mon, Oct 28, 2013 at 1:03 AM, Amit Nithian <> wrote:

> Hi all,
> I have been using Solr for years but never really stopped to wonder:
> When using the dismax/edismax handler, when do you have the qf different
> from the pf?
> I have always set them to be the same (maybe different weights) but I was
> wondering if there is a situation where you would have a field in the qf
> not in the pf or vice versa.
> My understanding from the docs is that qf is a term-wise hard filter while
> pf is a phrase-wise boost of documents who made it past the "qf" filter.
> Thanks!
> Amit

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