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From: Silvio Brandani <silvio.brandani@tech.sdb.it>
To: pgsql-admin@postgresql.org
Subject: database not using indexes, yet
Date: Fri, 18 Nov 2011 15:09:42 +0100
Message-ID: <4EC66726.6060800@tech.sdb.it> (raw)
In-Reply-To: <4EBA9AAC.9030900@tech.sdb.it>
References: <4EBA9AAC.9030900@tech.sdb.it>

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


already executed the vacuum ,reindex.

Please help

-- 
Silvio Brandani


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