Re: [PERFORM] How would you store read/unread topic status?

2009-06-24 Thread Chris St Denis
Mathieu Nebra wrote: Alexander Staubo a écrit : On Tue, Jun 23, 2009 at 1:12 PM, Mathieu Nebramate...@siteduzero.com wrote: This flags table has more or less the following fields: UserID - TopicID - LastReadAnswerID We are doing pretty much same thing. My problem is

[PERFORM] tsvector_update_trigger performance?

2009-06-24 Thread Chris St Denis
Is tsvector_update_trigger() smart enough to not bother updating a tsvector if the text in that column has not changed? If not, can I make my own update trigger with something like if new.description != old.description return tsvector_update_trigger('fti_all', 'pg_catalog.english',

Re: [PERFORM] tsvector_update_trigger performance?

2009-06-24 Thread Chris St Denis
Dimitri Fontaine wrote: Hi, Le 24 juin 09 à 18:29, Alvaro Herrera a écrit : Oleg Bartunov wrote: On Wed, 24 Jun 2009, Chris St Denis wrote: Is tsvector_update_trigger() smart enough to not bother updating a tsvector if the text in that column has not changed? no, you should do check