Re: questions about tsearch2 (for czech language)

On Mon, 22 Dec 2003, Pavel Stehule wrote:

> Hello
>
> I try tsearch2 within czech environment. It is works fine, but I have two
> questions.
>
> 1. I have words "se", "ve" in my czech stop words. But I get this words in
> result. Why? Have I problem with my configuration?

did you specify stop words in dictionaries configuration ?

select * from pg_ts_dict;


>
> tsearch2=# select * from ts_debug('jmenuji se Pavel StЛhule a bydlМm ve
> Skalici.');
>     ts_name    | tok_type | description |  token  |  dict_name  | tsvector
> ---------------+----------+-------------+---------+-------------+-----------
>  default_czech | lword    | Latin word  | jmenuji | {cz_ispell} |
> 'jmenuji'
>  default_czech | lword    | Latin word  | se      | {cz_ispell} | 'se'
>  default_czech | lword    | Latin word  | Pavel   | {cz_ispell} | 'pavel'
>  default_czech | word     | Word        | StЛhule | {cz_ispell} |
>  default_czech | lword    | Latin word  | a       | {cz_ispell} |
>  default_czech | word     | Word        | bydlМm  | {cz_ispell} | 'bydlet'
>  default_czech | lword    | Latin word  | ve      | {cz_ispell} | 've'
>  default_czech | lword    | Latin word  | Skalici | {cz_ispell} |
> 'skalici'
> (8 ЬАdek)
>
> tsearch2=# select * from pg_ts_cfgmap where ts_name='default_czech';
>     ts_name    |  tok_alias   |  dict_name
> ---------------+--------------+-------------
>  default_czech | email        | {simple}
>  default_czech | file         | {simple}
>  default_czech | float        | {simple}
>  default_czech | host         | {simple}
>  default_czech | hword        | {cz_ispell}
>  default_czech | int          | {simple}
>  default_czech | lhword       | {cz_ispell}
>  default_czech | lpart_hword  | {cz_ispell}
>  default_czech | lword        | {cz_ispell}
>  default_czech | nlhword      | {cz_ispell}
>  default_czech | nlpart_hword | {cz_ispell}
>  default_czech | nlword       | {cz_ispell}
>  default_czech | part_hword   | {simple}
>  default_czech | sfloat       | {simple}
>  default_czech | uint         | {simple}
>  default_czech | uri          | {simple}
>  default_czech | url          | {simple}
>  default_czech | version      | {simple}
>  default_czech | word         | {cz_ispell}
> (19 ЬАdek)
>
> 2. I use small czech dictionary. I need don't erase words which aren't in
> dictionary (in my sample StЛhule). Can I set it somewhere? I tryed add
> simple dict into cfg map, but witout sucess
>

Example, please ! What do you mean 'erase words' ?


> tsearch2=# select * from ts_debug('jmenuji se Pavel StЛhule a bydlМm ve
> Skalici.');           ts_name    | tok_type | description |  token  |
> dict_name      | tsvector
> ---------------+----------+-------------+---------+--------------------+-----------
>  default_czech | word     | Word        | StЛhule | {cz_ispell,simple} |
>  default_czech | lword    | Latin word  | a       | {cz_ispell,simple} |
>  default_czech | word     | Word        | bydlМm  | {cz_ispell,simple} |
> 'bydlet'
>
>
> Thank You
> Pavel Stehule
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>

    Regards,
        Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83