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On Wed, Nov 01, 2006 at 07:16:37PM -0300, Alvaro Herrera wrote:
> tomas@tuxteam.de wrote:
[...]
> > a "functional trigram index"? (this would be very cool).
>
> Heh :-) I meant an index, using the pg_trgm opclass (which indexes
> trigrams; hence the "trigram" part), on a function that would extract
> the text from a bytea column [...]
[goes back to cave, tests...]
Wow, that works:
CREATE INDEX i2 ON words USING gist(lower(word) gist_trgm_ops);
so I can interpose a (of course immutable) function before gist/trigram
does its thing. Why didn't I dare to assume that this will work?
Thanks for the hint.
- -- tomás
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