Re: Simple OUTER JOIN doubt

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От Tom Lane
Тема Re: Simple OUTER JOIN doubt
Дата
Msg-id 8937.1161978935@sss.pgh.pa.us
обсуждение исходный текст
Ответ на Simple OUTER JOIN doubt  (Sandro Dentella <sandro@e-den.it>)
Ответы Re: Simple OUTER JOIN doubt  (Sandro Dentella <sandro@e-den.it>)
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Sandro Dentella <sandro@e-den.it> writes:
> I only get films for which a vote was expressed. My query:

>        SELECT f.id, f.titolo, p.voto
>        FROM film_film f
>        LEFT OUTER JOIN vota_punteggio  p
>        ON (f.id = p.film_id)
>        WHERE
>        (p.user_id = 2 OR p.user_id IS NULL)

> Can you help me understanding what is wrong?

[ scratches head... ]  Looks all right to me.  Are you sure you copied
what you typed accurately?  Does EXPLAIN show that a left join is being
used?

            regards, tom lane

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