From: ta145@yahoo.com
To: pgsql-general@postgresql.org
To: pgsql-php@postgresql.org
To: pgsql-sql@postgresql.org
Subject: looking to speed up SELECT ... LEFT JOIN query
Date: 6 Aug 2002 22:03:55 -0700
Message-ID: <1b23bd38.0208062103.3ec45a2b@posting.google.com> (raw)
Hi,
I have a working SELECT statement using LEFT JOIN but I'm hoping
someone can suggest something that might be a bit quicker (currently 3
seconds for result).
SELECT * FROM ((table1 LEFT JOIN table2 USING (custno)) AS j1
LEFT JOIN table3 USING (custno)) AS j2
LEFT JOIN table4 USING (custno)
WHERE custno='$custno';
The primary table is table1, the key for all tables is 'custno'. I
need the LEFT JOIN because any one or all of the other tables (table2,
table3, table4) might not have corresponding data.
Regards,
Trey Ackerman
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To: pgsql-sql@postgresql.org
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Subject: Re: looking to speed up SELECT ... LEFT JOIN query
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