On Thu, Sep 3, 2015 at 6:19 PM, Claudio Freire <klaussfre...@gmail.com> wrote: > On Wed, Sep 2, 2015 at 4:29 PM, Jeff Janes <jeff.ja...@gmail.com> wrote: >> On Wed, Sep 2, 2015 at 7:00 AM, Volker Böhm <vol...@vboehm.de> wrote: >>> >>> >>> >>> CREATE INDEX trgm_adresse ON adressen.adresse USING gist >>> (normalize_string((btrim((((((((normalize_string((((COALESCE((vorname)::text, >>> ''::text) || ' '::text) || (name1)::text))::character varying, >>> (-1)))::text || ' '::text) || (normalize_string((COALESCE((strasse)::text, >>> ''::text))::character varying, (-2)))::text) || ' '::text) || (plz)::text) >>> || ' '::text) || (normalize_string((COALESCE((ort)::text, >>> ''::text))::character varying, (-3)))::text)))::character varying) >>> gist_trgm_ops); >> >> >> >> You might have better luck with gin_trgm_ops than gist_trgm_ops. Have you >> tried that? > > > I just had the exact same problem, and indeed gin fares much better.
Also, with 9.5 we will see much better worst case performance from gin via Jeff's patch: http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=97f3014647a5bd570032abd2b809d3233003f13f (I had to previously abandon pg_tgrm for a previous project and go with solr; had this patch been in place that would not have happened) merlin -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
