Re: tsearch bug in 7.2.1?

tsearch has compiled-in stop-list, it's currently just not flexible
as OpenFTS does. We plan to move most functionality to tsearch but
currently have no time. Feel free to join us to speedup tsearch
development.
Oleg

On Thu, 15 Aug 2002, Christopher Kings-Lynne wrote:

> Actually, looking at this again it's possible that tsearch sees 'a' as a
> skip word and so doesn't allow a search on it.  This makes it _really_ hard
> for me to parse and check user keywords - maybe a 'isvalidsyntax' sort of
> function should be included?  Hmmm...maybe I could use the cast to
> ::mquery_txt to check it...but now I have to detect an ERROR condition and
> deal with it appropriately...
>
> Chris
>
> > -----Original Message-----
> > From: pgsql-hackers-owner@postgresql.org
> > [mailto:pgsql-hackers-owner@postgresql.org]On Behalf Of Christopher
> > Kings-Lynne
> > Sent: Thursday, 15 August 2002 1:43 PM
> > To: Hackers
> > Subject: [HACKERS] tsearch bug in 7.2.1?
> >
> >
> > Hi,
> >
> > I noticed this behaviour:
> >
> > usa=# SELECT rr.id, rr.name, rr.description FROM recipe_recipes rr WHERE
> > rr.ftiidx ## 's';
> >  id  |               name               |
> > description
> > -----+----------------------------------+-------------------------
> > ----------
> > ------------------------------------------------
> >  202 | Bird's Nest                      | An egg nestled in a crispy, hot
> > bread roll.
> >  293 | Reuben Triple S                  | Corn beef, swiss cheese and
> > sauerkraut on pumpernickel.
> >   30 | Hedgehogs                        | This is comfort food at it's
> > yummiest.
> >  130 | Hearty Apple & Cinnamon Porridge | A great way to warm you up on a
> > winter's morning.
> >   83 | Banana & Apple Compote           | Great way to finish a meal on a
> > cool winter's day.
> >  139 | Minestrone                       | Served with a crusty roll, this
> > soup is a meal on it's own.
> >   75 | Mango Sorbet                     | A mango-lover's delight.
> >   19 | Chunky Vegetable Chowder         | Serve this soup with a
> > crusty roll
> > and it's a hearty meal on a cold winter's eve.
> >   36 | Lemon Fish Rolls                 | A pleasant way to
> > include fish in
> > your family's diet.
> > (9 rows)
> >
> > usa=# SELECT rr.id, rr.name, rr.description FROM recipe_recipes rr WHERE
> > rr.ftiidx ## 's|a';
> > ERROR:  Your query contained only stopword(s), ignored
> > usa=# SELECT rr.id, rr.name, rr.description FROM recipe_recipes rr WHERE
> > rr.ftiidx ## 's|x';
> >  id  |               name               |
> > description
> > -----+----------------------------------+-------------------------
> > ----------
> > ------------------------------------------------
> >  202 | Bird's Nest                      | An egg nestled in a crispy, hot
> > bread roll.
> >  293 | Reuben Triple S                  | Corn beef, swiss cheese and
> > sauerkraut on pumpernickel.
> >   30 | Hedgehogs                        | This is comfort food at it's
> > yummiest.
> >  130 | Hearty Apple & Cinnamon Porridge | A great way to warm you up on a
> > winter's morning.
> >   83 | Banana & Apple Compote           | Great way to finish a meal on a
> > cool winter's day.
> >  139 | Minestrone                       | Served with a crusty roll, this
> > soup is a meal on it's own.
> >   75 | Mango Sorbet                     | A mango-lover's delight.
> >   19 | Chunky Vegetable Chowder         | Serve this soup with a
> > crusty roll
> > and it's a hearty meal on a cold winter's eve.
> >   36 | Lemon Fish Rolls                 | A pleasant way to
> > include fish in
> > your family's diet.
> > (9 rows)
> > usa=# SELECT rr.id, rr.name, rr.description FROM recipe_recipes rr WHERE
> > rr.ftiidx ## 'st|a';
> > ERROR:  Your query contained only stopword(s), ignored
> > usa=# SELECT rr.id, rr.name, rr.description FROM recipe_recipes rr WHERE
> > rr.ftiidx ## 'st|ar';
> >  id | name | description
> > ----+------+-------------
> > (0 rows)
> >
> > I don't see how that's correct?  Those ERRORs seem to be valid syntax to
> > me...
> >
> > Chris
> >
> >
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> >
>
>
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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/
phone: +007(095)939-16-83, +007(095)939-23-83