Don't invent a wheel and use contrib/tsearch2 for that.
On Tue, 13 Jun 2006, Aaron Bono wrote:
> In another post on a different topic, Rod Taylor said the following:
>
> "A\tcat in the\nhat" might be stored as ARRAY['A', 'cat', 'in', 'the',
> 'hat'].
>
> This got me thinking. I have a discussion forum for gamers and want
> to provide searching capabilities so the user can type in a phrase
> like "magical bow" and get all posts, sorted by relevance that contain
> these words.
>
> My questions are:
> 1. Will storing the posts in an ARRAY help improve performance of
> these searches? If so, by how much?
> 2. What functions or libraries are available to make such searching
> easy to implement well?
> 3. What is the best way to sort by relevance?
>
> Thanks,
> Aaron Bono
>
> ---------------------------(end of broadcast)---------------------------
> TIP 3: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/docs/faq
>
Regards, Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83