Hello,
I have a dedicated server for my
posgresql database :
P4 2.4 GHZ
HDD IDE 7200 rpm
512 DDR 2700
I have a problem whith one table of
my database :
CREATE SEQUENCE "base_aveugle_seq" START
1;
CREATE TABLE "base_aveugle" ( "record_id" integer DEFAULT nextval('"base_aveugle_seq"'::text) NOT NULL, "dunsnumber" integer NOT NULL, "cp" text NOT NULL, "tel" text NOT NULL, "fax" text NOT NULL, "naf" text NOT NULL, "siege/ets" text NOT NULL, "effectif" integer NOT NULL, "ca" integer NOT NULL, Constraint "base_aveugle_pkey" Primary Key ("record_id") ); CREATE INDEX base_aveugle_dunsnumber_key ON base_aveugle USING btree (dunsnumber); CREATE INDEX base_aveugle_cp_key ON base_aveugle USING btree (cp); CREATE INDEX base_aveugle_naf_key ON base_aveugle USING btree (naf); CREATE INDEX base_aveugle_effectif_key ON base_aveugle USING btree (effectif); This table contains 5 000 000
records
I have a PHP application which
often makes queries on this table (especially on the "cp","naf","effectif"
fields)
Querries are like :
select (distint cp) from base_aveugle where cp='201A' and effectif between 1 and
150
select (*) from base_aveugle where naf in ('721A','213F','421K') and cp in
('54210','21459','201A') and effectif < 150
I think it is possible to optimize
the performance of this queries before changing the hardware (I now I
will...) but I don't know how, even after having read lot of things about
postgresql ...
Thanks ;)
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