Constantin Teodorescu <teo(at)flex(dot)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