From: Tom Lane <tgl@sss.pgh.pa.us>
To: Constantin Teodorescu <teo@flex.ro>
Cc: PostgreSQL Interfaces <pgsql-interfaces@postgresql.org>
Subject: Re: MULTIPLE OUTER JOIN SYNTAX :-( can't quess it
Date: Mon, 30 Apr 2001 15:05:37 -0400
Message-ID: <17688.988657537@sss.pgh.pa.us> (raw)
In-Reply-To: <3AED6EB6.6D808185@flex.ro>
References: <3AED6EB6.6D808185@flex.ro>
Constantin Teodorescu <teo@flex.ro> writes:
> I want a select query with them with 2 outer joins like that
> t0.id = t1.author
> t0.id = t2.id
> Tried :
> select t0.name, t1.title, t2.nickname from authors t0 left outer JOIN
> books t1 ON (t0."id"=t1."author") , authors t0 left outer join nicknames
> t2 on (t0."id"=t2."id")
> but it says "author table declared more than once".
select t01.name, t01.title, t2.nickname from
(authors t0 left outer join books t1 on (t0."id"=t1."author")) t01
left outer join
nicknames t2 on (t01."id"=t2."id") ;
There are variants but that's the basic idea...
regards, tom lane
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To: pgsql-interfaces@postgresql.org
Cc: tgl@sss.pgh.pa.us, teo@flex.ro
Subject: Re: MULTIPLE OUTER JOIN SYNTAX :-( can't quess it
In-Reply-To: <17688.988657537@sss.pgh.pa.us>
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