Re: Workaround: Planner preference for tsquery filter vs. GIN index in fast text search
Laurence Parry <greenreaper@hotmail.com>
From: "Laurence Parry" <greenreaper@hotmail.com>
To: <obartunov@gmail.com>
Cc: <pgsql-performance@postgresql.org>
Date: 2014-04-20T05:44:34Z
Lists: pgsql-performance
> btw, 9.4 should be wiser in case of rare+common terms, > thanks to GIN fast scan feature. I'll look forward to it! We have a few other GIN indexes . . . I don't want to misrepresent my impression of Postgres performance; the only other case where I've made a significant improvement by tweaking was pre-checking a couple of tables with count(*) > 0 before using them against several thousand submissions (checking lists of blocked artists and keywords against submission details). I've been pleasantly surprised at what it can handle, especially after index-only scans came out. -- Laurence "GreenReaper" Parry