On Thu, 19 Aug 2010, darklow wrote:
Hello,
I am using PostgreSQL 8.4 full text search in following way:
Custom FTS configuration called "dc2" with these dictionaries in
following order for asciihword token: latvian_ispell, english_stem,
russian_stem
russian_stem will never called ! Sorry, I have no time right now, will
be back later.
Latvian ispell dictionary contains words with different endings but
same meaning (latvian langiage specifics, plural words, etc)
The problem starts when using wildcard :* to_tsquery syntax.
For example. If i look for the word "kriev" i am automatically adding
wildcard using syntax: to_tsquery('dc2', 'kriev:*');
By searching kriev:* FTS founds word "krievs" in latvian_ispell
dictionary which is totally ok.
SELECT * from ts_debug('dc2', 'kriev:*');
alias | description | token | dictionaries
| dictionary | lexemes
-----------+-----------------+-------+----------------------------------------------------------+----------------+----------
asciiword | Word, all ASCII | kriev |
{latvian_ispell,english_stem,russian_stem} | latvian_ispell | {krievs}
blank | Space symbols | :* | {}
If understand correctly now database uses not kriev:* but krievs:* for
following queries.
And here is the problem, data contains also word: Krievija, and in
this case search doesn't find it, because now it looks for Krievs:*
and not Kriev:* anymore.
Is there any solution anone could suggest to get results by both
criterias - kriev:* (starting query) and krievs:* (founded in ispell
dict).
Only idea i had is to somehow combine two tsqueries one -
to_tsquery('dc2', 'kriev:*') and to_tsquery('english', 'kriev:*'); so
the search looks for both - kriev:* and krievs:* but anyway didnt
figured out any syntax i could use :(
Thanks
Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@xxxxxxxxxx, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83
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