Re: phrase search

On Tue, 2008-06-03 at 22:16 +0400, Teodor Sigaev wrote:
> > This is far more complicated than I thought.
> >> Of course, phrase search should be able to use indexes.
> > I can probably look into how to use index. Any pointers on this?
>
> src/backend/utils/adt/tsginidx.c, if you invent operation # in tsquery then you
> will have index support with minimal effort.
> >
> > Yes this is exactly how I am using in my application. Do you think this
> > will solve a lot of common case or we should try to get phrase search
>
> Yeah, it solves a lot of useful case, for simple use it's needed to invent
> function similar to existsing plaitnto_tsquery, say phraseto_tsquery. It should
> produce correct tsquery with described above operations.
>

I can add index support and support for arbitrary distance between
lexeme.

It appears to me that supporting arbitrary boolean expression will be
complicated. Can we pull out something from TSQuery?

-Sushant.