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From: Patrick Welche <prlw1@newn.cam.ac.uk>
To: Mauricio Hipp Werner <mhipp@mail.pjud.cl>
Cc: Alexaki Sofia <alexaki@ics.forth.gr>
Cc: pgsql-sql@postgresql.org, Markus Wagner <wagner@imsd.uni-mainz.de>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: outer join in PostgreSql
Date: Mon, 15 Jan 2001 21:36:53 +0000
Message-ID: <20010115213653.D8984@quartz.newn.cam.ac.uk> (raw)
In-Reply-To: <012701c07f40$c7c0a6e0$0672148f@cadm.pjud>
References: <Pine.GSO.4.10.10101151201390.22937-100000@athena.ics.forth.gr>
	<012701c07f40$c7c0a6e0$0672148f@cadm.pjud>

On Mon, Jan 15, 2001 at 06:16:00PM -0400, Mauricio Hipp Werner wrote:
> I need help, which is the symbol used in postgreSql to carry out the outer
> join.
> 
>  in oracle the is used (+)
> in sybase the is used * and
> in postgreSql?

I don't really understand your question, but from src/test/regress/sql/join.sql
some examples of use are:

--
-- Outer joins
-- Note that OUTER is a noise word
--

SELECT '' AS "xxx", *
  FROM J1_TBL LEFT OUTER JOIN J2_TBL USING (i);

SELECT '' AS "xxx", *
  FROM J1_TBL LEFT JOIN J2_TBL USING (i);

SELECT '' AS "xxx", *
  FROM J1_TBL RIGHT OUTER JOIN J2_TBL USING (i);

SELECT '' AS "xxx", *
  FROM J1_TBL RIGHT JOIN J2_TBL USING (i);

SELECT '' AS "xxx", *
  FROM J1_TBL FULL OUTER JOIN J2_TBL USING (i);

SELECT '' AS "xxx", *
  FROM J1_TBL FULL JOIN J2_TBL USING (i);

SELECT '' AS "xxx", *
  FROM J1_TBL LEFT JOIN J2_TBL USING (i) WHERE (k = 1);

SELECT '' AS "xxx", *
  FROM J1_TBL LEFT JOIN J2_TBL USING (i) WHERE (i = 1);


Cheers,

Patrick

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  Cc: prlw1@newn.cam.ac.uk, mhipp@mail.pjud.cl, alexaki@ics.forth.gr, wagner@imsd.uni-mainz.de
  Subject: Re: outer join in PostgreSql
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