From: Tom Lane <tgl@sss.pgh.pa.us>
To: Patrick Hatcher <pathat@comcast.net>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Slow update statement
Date: Sat, 06 Aug 2005 10:12:43 -0400
Message-ID: <17916.1123337563@sss.pgh.pa.us> (raw)
In-Reply-To: <42F4B812.7070501@comcast.net>
References: <42F4B812.7070501@comcast.net>
Patrick Hatcher <pathat@comcast.net> writes:
> I'm running an update statement on about 12 million records using the
> following query:
> Update table_A
> set F1 = b.new_data
> from table_B b
> where b.keyfield = table_A.keyfield
What does EXPLAIN show for this?
Do you have any foreign key references to table_A from elsewhere?
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, pathat@comcast.net
Subject: Re: Slow update statement
In-Reply-To: <17916.1123337563@sss.pgh.pa.us>
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