Re: re : tsearch2 problem - Mailing list pgsql-general

From Teodor Sigaev
Subject Re: re : tsearch2 problem
Date
Msg-id 4354ADA9.4040801@sigaev.ru
Whole thread Raw
In response to re : tsearch2 problem  ("沈一枫" <alphahunters@163.com>)
List pgsql-general
> because of its way of "Inverse Order OF Idexing",and "The GiST Tree is
> well for larting lan but doesn't for chinese lan(also ineffifent for
> Japanese lan)"。

About japanese look at http://www.oss.ecl.ntt.co.jp/tsearch2j/ (it's on
Japanese, but you can contact with developer)



>
>
>
> I only know that GiST is also  "Inverse Order OF Idexing",but of course
> it is a tree NOT as lucene does

Tsearch2 doesn't use inverted index (yet), and so it easy to update (your index
is always full - online indexing), but it hasn't good performance on large data
set. The limit is about 10^5 - 10^6 rows in practice.


--
Teodor Sigaev                                   E-mail: teodor@sigaev.ru
                                                    WWW: http://www.sigaev.ru/

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