Re: Tsearch limitations

Mat,

there are several function you may use to see (please, read documentation):

apod=# select to_tsvector('Hi my email addres is psql-mail@freeuk.com');
                    to_tsvector
----------------------------------------------------
 'hi':1 'addr':4 'email':3 'psql-mail@freeuk.com':6
(1 row)

or, even better

apod=# select * from ts_debug('Hi my email addres is psql-mail@freeuk.com');
     ts_name     | tok_type | description |        token         | dict_name |        tsvector
-----------------+----------+-------------+----------------------+-----------+------------------------
 default_russian | lword    | Latin word  | Hi                   | {en_stem} | 'hi'
 default_russian | lword    | Latin word  | my                   | {en_stem} |
 default_russian | lword    | Latin word  | email                | {en_stem} | 'email'
 default_russian | lword    | Latin word  | addres               | {en_stem} | 'addr'
 default_russian | lword    | Latin word  | is                   | {en_stem} |
 default_russian | email    | Email       | psql-mail@freeuk.com | {simple}  | 'psql-mail@freeuk.com'
(6 rows)

You may write your own parser or preprocess text before tsearch.

    Oleg
On Mon, 11 Aug 2003, Mat wrote:

> Can Tsearch be used to return substring matches?
>
> i.e
>
> Text to search: Hi my email addres is psql-mail@freeuk.com
>
> Query "psql" would match the email address?
>
> Query "mail" would also match?
>
> Query "reeu" would also match?
>
> Or is tsearch not suitable for this type of query? should i use FTI
> instead?
>
> Thanks.
>
>
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    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/
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