On Mon, Aug 09, 2010 at 06:35:47PM -0300, Euler Taveira de Oliveira wrote: > Alexander Korotkov escreveu: > > Such approach can give benefit when we need to filter by > > similarity. For example, in pg_trgm "%" is used for similarity > > filtering, but similarity threshold is global for session. That's > > why we can't create complex queries which contain similarity > > filtering with different threshold. > > > What do you mean by complex queries? You can always use the SET > command. Sadly it doesn't work when you have different thresholds > within distinct subqueries. (In pg_similarity I use this approach > to set the function's thresholds). What I am investigating is a way > to build an index with some user-defined parameters. (We already > have some infra-structure in reloptions for that but it needs some > work to support my idea). I have some half-baked patch that I'm > planning to submit to some of the CFs. Unfortunately, I don't have > time for it ATM.
Do you have enough of it to send out as WIP? Cheers, David. -- David Fetter <da...@fetter.org> http://fetter.org/ Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter Skype: davidfetter XMPP: david.fet...@gmail.com iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics Remember to vote! Consider donating to Postgres: http://www.postgresql.org/about/donate -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
