Re: full text indexing

From: Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>
To: Chris <dmagick(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: full text indexing
Date: 2006-03-17 05:10:35
Message-ID: Pine.GSO.4.63.0603170809120.22593@ra.sai.msu.su
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Chris,

try REL8_1_STABLE branch, because you save a lot of time of indexing

Oleg
On Fri, 17 Mar 2006, Chris wrote:

> Oleg Bartunov wrote:
>> On Wed, 15 Mar 2006, chris smith wrote:
>>
>>> Hi all,
>>>
>>> Just wondering which full text module is better & what the differences
>>> are between tsearch and fti ?
>>
>> if you need online indexing and linguistic support (dictionaries, stop
>> words, ranking) tsearch2 is fine. If your data are static and you need
>> only strict search, fti could works for you.
>> We hope to develop inverted index support for tsearch2 this year, though.
>>
>>>
>>> The table in question has roughly 80,000 rows.
>>
>>
>> how many unique words and how long are documents ?
>
> I think I'll stick to tsearch, it seems to work pretty well.
>
> I created the words list from one table (2 columns) for fti. 2.6G file and
> almost 200 million records, and took up almost 8.5G of space in the database.
>
> I was going to see if I could do a speed comparison between the two but ran
> out of space before I could create the indexes on this table.
>
> Hmm. Might try it on a different table and see what happens, I'm interested
> to see the differences (if any) between the results :)
>
>

Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru)
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83

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