Re: Two joins on same foreign key

Поиск
Список
Период
Сортировка
От elein
Тема Re: Two joins on same foreign key
Дата
Msg-id 20040131110937.W14914@cookie.varlena.com
обсуждение исходный текст
Ответ на Two joins on same foreign key  (Anony Mous <a.mous@shaw.ca>)
Ответы Re: Two joins on same foreign key  (Anony Mous <a.mous@shaw.ca>)
Re: Two joins on same foreign key  (elein <elein@varlena.com>)
Список pgsql-general
PostgreSQL General Bits Issue #56 has an article on Join Basics
which also has an example of multiple table joins.

http://cookie.varlena.com/varlena/GeneralBits/56.php

--elein
elein@varlena.com

On Fri, Jan 30, 2004 at 03:03:35PM -0700, Anony Mous wrote:
> Hi,
>
>
>
> I??m fairly new to this database, and have read much discussion on
> sub-queries.  I??ve seen that they can be great for some queries, and downright
> slow for others.  I have a table with two foreign keys referencing another
> table, like:
>
>
>
> Table #1
>
> employee_id (pk)
>
> employee_name
>
>
>
> Table #2
>
> teamleader_employee_id
>
> backup_employee_id
>
>
>
> both fields in table 2 need to do a lookup in table 1 to get the name of the
> actual employee.  Do I need to use nested queries to accomplish this?  Any help
> is greatly appreciated!
>
>
>
> -AM
>

В списке pgsql-general по дате отправления:

Предыдущее
От: "John Sidney-Woollett"
Дата:
Сообщение: Re: Large object insert/update and oid use
Следующее
От: Anony Mous
Дата:
Сообщение: Re: Two joins on same foreign key