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help / color / mirror / Atom feedFrom: David G Johnston <david.g.johnston@gmail.com>
To: pgsql-sql@postgresql.org
Subject: Re: slow sub-query problem
Date: Mon, 17 Nov 2014 11:44:46 -0700 (MST)
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Tim Dudgeon wrote
> All relevant columns are indexed and using PostgreSQL 9.4.
> Any clues how to re-write it to avoid the slow sub-query.
Try using an actual join instead of a subquery. You will have to provide
aliases and then setup the where clause appropriately.
I am reading the query correctly in that the repeated reference to 643413 is
redundant? The lack of a defined natural primary key makes blind reasoning
difficult.
David J.
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To: pgsql-sql@postgresql.org
Cc: david.g.johnston@gmail.com
Subject: Re: slow sub-query problem
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