From: sarloc@jevic.com
To: pgsql-sql@postgresql.org
Subject: Poor performance on a right join
Date: 13 Mar 2003 16:12:31 -0800
Message-ID: <c8ae6a4.0303131612.270f150a@posting.google.com> (raw)
When doing a join query I am getting a responce time of 3 seconds. The
callhist table has 66000 rows and the phone table has 10000 rows. I
have an indexes on callhist.call_date, callhist.operator_id,
phone.phone, & phone.cust_code. Here's the SQL
SELECT a.CALL_DATE, a.OPERATOR_ID, a.CUST_CODE FROM PHONE as b right
join CALLHIST as a on (a.CUST_CODE=b.CUST_CODE) where (b.PHONE =
'555-555-5555') order by a.call_date desc;
The postgres db is running on a 2 P3 700 processor server with 1GB of
ram running Red Hat Linux 7.3. I am running PostgreSQL 7.2.2
Why is the query taking so long? What can I do to help the
performance?
Thanks in advance,
Carmen
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To: pgsql-sql@postgresql.org
Cc: sarloc@jevic.com
Subject: Re: Poor performance on a right join
In-Reply-To: <c8ae6a4.0303131612.270f150a@posting.google.com>
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