Silvio Brandani <silvio.brandani@xxxxxxxxxxx> writes: > On postgres 8.3.11 on linux centos 5 we have a table not too big with > primary key index on > Indexes: > "aida_references_pkey" PRIMARY KEY, btree (aida_reference_id) > the query not use index: > aidadb=# explain analyze select aida_reference_id from > aida.aida_references where aida_reference_id = '3145'; > QUERY PLAN > ---------------------------------------------------------------------------------------------------------------- > Seq Scan on aida_references (cost=0.00..51489.15 rows=1 width=4) > (actual time=0.173..1457.643 rows=1 loops=1) > Filter: (aida_reference_id = 3145) > Total runtime: 1457.696 ms There's nothing here to suggest that this query shouldn't use an index, so the problem is in something you didn't show us. Maybe you have enable_indexscan turned off, or maybe that index isn't really on that table, or something else. regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
