From: Ludwig Lim <lud_nowhere_man@yahoo.com>
To: PostgreSQL Mailing List <pgsql-sql@postgresql.org>
Subject: Question on OUTER JOINS.
Date: Fri, 27 Jun 2003 22:45:47 -0700 (PDT)
Message-ID: <20030628054547.40824.qmail@web80503.mail.yahoo.com> (raw)
Hi:
1) Is the ON clause of an OUTER JOIN always
evaluated first before the WHERE clause?
2) Given the ff SQL statement :
SELECT employee_id,
a.status as status
FROM permissions a LEFT JOIN
(select * from employee where employee_id = 3)
as b on (a.status=b.status)
WHERE a.status='test';
Is there a way to rewrite the query as a view such
that one can do:
select *
from test_view
where employee_id=3 and status='test';
Thank you very much,
ludwig lim
__________________________________
Do you Yahoo!?
SBC Yahoo! DSL - Now only $29.95 per month!
http://sbc.yahoo.com
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-sql@postgresql.org
Cc: lud_nowhere_man@yahoo.com
Subject: Re: Question on OUTER JOINS.
In-Reply-To: <20030628054547.40824.qmail@web80503.mail.yahoo.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox