Yes it does:
SET EXPLAIN ON;
It writes the file to sqexplain.out
-----Original Message-----
From: pgsql-performance-owner@postgresql.org
[mailto:pgsql-performance-owner@postgresql.org] On Behalf Of Tom Lane
Sent: Tuesday, January 09, 2007 9:13 AM
To: Gregory S. Williamson
Cc: db@zigo.dhs.org; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Horribly slow query/ sequential scan
"Gregory S. Williamson" <gsw@globexplorer.com> writes:
> HAving burdened others with my foolishness too often, I hesitate to
> ask, but could someone either point me to a reference or explain what
> the difference might be ... I can see it with the eyes but I am having
> trouble understanding what Informix might have been doing to my (bad
> ?) SQL to "fix" the query.
Me too. Does informix have anything EXPLAIN-like to show what it's
doing?
regards, tom lane
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