Re: Horribly slow query/ sequential scan

 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

---------------------------(end of broadcast)---------------------------
TIP 7: You can help support the PostgreSQL project by donating at

                http://www.postgresql.org/about/donate