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.
-- Euler Taveira de Oliveira http://www.timbira.com/ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
