Doh - sorry about these hideously late posts. I think my mail queue has
been clogged up for a while!
Chris
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Christopher
> Kings-Lynne
> Sent: Monday, 23 July 2001 10:34 AM
> To: Tom Lane
> Cc: Hackers
> Subject: Re: [HACKERS] Full Text Indexing
>
>
> > "Christopher Kings-Lynne" <[EMAIL PROTECTED]> writes:
> > > I'm playing around with the Full Text Indexing module, and I
> notice that
> > > it's case-sensitive. This seems to be pretty useless to me -
> > especially for
> > > my application. I wonder if there'd be any objections to me
> > modifying it to
> > > be case-insensitive. Or at least be configurable either way...
> >
> > Seems like a good idea, but make it configurable.
>
> I actually came up with another way of solving the problem.
>
> The FTI table has two columns: (string, id). The code needs to do two
> things; delete all strings for an id, and join to the main table based on
> the id.
>
> The docs for FTI recommend indexing (string, id). This is poor as the
> delete based on id does a sequential scan, although the join seems to be
> able to use the index (as long was you have a where string ~
> '^something').
>
> I indexed as follows:
>
> -- Functional index that lets us do case-insensitivity without hacking
> fti.so
> CREATE INDEX fti_string_idx ON fti_table(lower(string));
>
> -- Index on id to allow fast deletes
> CREATE INDEX fti_id_idx ON fti_table(id);
>
> That seems to be a good solution to me - it allows
> case-insensitivity, fast
> deletion and fast joining.
>
> > > Also, the fti.pl that comes with the contrib seems to be using
> > an outdated
> > > version of CPAN's Pg.pm.
> >
> > It hasn't been touched in awhile, so feel free to update it. BTW,
> > someone ought to look at bringing src/interfaces/perl5 into sync with
> > the CPAN version, too. Or possibly we should stop distributing that
> > altogether, if the CPAN copy is being maintained?
>
> I'll have a look someday maybe, but I'll try to get this
> harder-than-expected ADD CONSTRAINT UNIQUE/PRIMARY patch off my
> hands first.
>
> Chris
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 3: if posting/reading through Usenet, please send an appropriate
> subscribe-nomail command to [EMAIL PROTECTED] so that your
> message can get through to the mailing list cleanly
>
---------------------------(end of broadcast)---------------------------
TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
