Re: JOIN on set of rows?

Поиск
Список
Период
Сортировка
От Peter Fein
Тема Re: JOIN on set of rows?
Дата
Msg-id 20050510184328.53260d8b@layout.pfein.org
обсуждение исходный текст
Ответ на JOIN on set of rows?  (Peter Fein <pfein@pobox.com>)
Список pgsql-general
On 05/10/05 06:17 PM CDT, Peter Fein <pfein@pobox.com> said:
> Hiya-
>
> I need to do something like this:
>
> SELECT t1.symbol AS app_name, t2.outside_key AS app_id
> FROM t2 LEFT JOIN t1 ON t1.t2_id=t2.id AS my_join
> LEFT JOIN rows of arbitrary (app_name, app_id) ON
> my_join.app_name=rows.app_name AND my_join.app_id=rows.app_id
>

The other thought was:
SELECT t1.symbol AS app_name, t2.outside_key AS app_id
FROM t2 LEFT JOIN t1 ON t1.t2_id=t2.id AS my_join
UNION SELECT rows of arbitrary (app_name, app_id)

Thanks!

--
Peter Fein                 pfein@pobox.com                 773-575-0694

Basically, if you're not a utopianist, you're a schmuck. -J. Feldman

В списке pgsql-general по дате отправления:

Предыдущее
От: Daniel Schuchardt
Дата:
Сообщение: Re: Delphi - Developers start develop Access components
Следующее
От: Greg Stark
Дата:
Сообщение: Re: [PERFORM] "Hash index" vs. "b-tree index" (PostgreSQL