From: Tom Lane <tgl@sss.pgh.pa.us>
To: cgg007@yahoo.com
Cc: pgsql-sql@postgresql.org
Subject: Re: Using VIEW to simplify code...
Date: Tue, 19 Nov 2002 14:47:41 -0500
Message-ID: <22625.1037735261@sss.pgh.pa.us> (raw)
In-Reply-To: <20021119182940.91495.qmail@web13802.mail.yahoo.com>
References: <20021119182940.91495.qmail@web13802.mail.yahoo.com>
Chris Gamache <cgg007@yahoo.com> writes:
> Right now I dynamicly generate the SQL for an incredibly ugly 4 table join
> based on user information client-side. I got the bright idea to create a view
> and then run a MUUUCH simpler client-side query on that view. The problem is
> that PostgreSQL apparantly runs the view FIRST and then applies the criteria
> AFTER assembling the whole view.
Not necessarily; it starts with that (which after all is what you wrote)
and tries to transform it into something more efficient. But it's not
as smart as a person ;-).
> If you MUST have the giant-and-hard-to-maintain-client-generated-sql
> statement and its related explain, I'll produce it.
If you want help, you must provide details. The PG version number is
relevant also.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, cgg007@yahoo.com
Subject: Re: Using VIEW to simplify code...
In-Reply-To: <22625.1037735261@sss.pgh.pa.us>
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