On Mon, Nov 01, 2010 at 02:57:56PM +0100, CÃdric Villemain wrote: > > Â CONSTRAINT tableindex_pkey PRIMARY KEY (tableindex) > > ) > > the index definition is > > CREATE INDEX "PK_AT2" > > Â ON ABC > > Â USING btree > > Â (event, tableindex) > > TABLESPACE sample; > > Indexing twice the same column is useless. (perhaps move your PK to > the tablespace 'sample' is good too ?) why do you say that? these are not the same indexes and they serve different purposes. Best regards, depesz -- Linkedin: http://www.linkedin.com/in/depesz / blog: http://www.depesz.com/ jid/gtalk: depesz@xxxxxxxxxx / aim:depeszhdl / skype:depesz_hdl / gg:6749007 -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance