| From: | Richard Huxton <dev(at)archonet(dot)com> |
|---|---|
| To: | Stephen Davies <scldad(at)sdc(dot)com(dot)au> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: ts_headline |
| Date: | 2008-02-21 08:49:37 |
| Message-ID: | 47BD3B21.4090700@archonet.com |
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| Lists: | pgsql-general pgsql-patches |
Stephen Davies wrote:
> I am a bit puzzled by the output of ts_headline (V8.3) for different queries.
> It seems that the difference is in the number of occurrences of the criterion
> words. If the number of hits is less than some number, the ts_headline result
> is "correct" but if the number of hits exceeds that limit, the result is just
> the first MinWords of the "document".
>
> I have seen cases with up to 20 hits succeed but cases with 35 hits miss.
> The spread of hits does not seem to be relevant.
http://www.postgresql.org/docs/8.3/static/textsearch-controls.html#TEXTSEARCH-HEADLINE
Are you bumping into the MaxWords limit? If you've got 35 hits that must
be at least 35 words.
--
Richard Huxton
Archonet Ltd
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