Re: Subqueries in Check() -- Still Intentionally Omitted?

Поиск
Список
Период
Сортировка
От Richard Broersma
Тема Re: Subqueries in Check() -- Still Intentionally Omitted?
Дата
Msg-id 396486430809021707x45d34935lab11fc8722f42a23@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Subqueries in Check() -- Still Intentionally Omitted?  (Alvaro Herrera <alvherre@commandprompt.com>)
Список pgsql-general
On Tue, Sep 2, 2008 at 3:47 PM, Alvaro Herrera
<alvherre@commandprompt.com> wrote:

> The problem is that you have to rerun the query to verify that the CHECK
> condition still holds, whenever the table that the CHECK clause is
> checking changes.  This is rather problematic, because we'd need to make
> the system aware of such reverse dependencies.

Thanks for the clarification.  This makes sense.


--
Regards,
Richard Broersma Jr.

Visit the Los Angeles PostgreSQL Users Group (LAPUG)
http://pugs.postgresql.org/lapug

В списке pgsql-general по дате отправления:

Предыдущее
От: Matthew Wilson
Дата:
Сообщение: Re: Foreign Key normalization question
Следующее
От: Tom Lane
Дата:
Сообщение: Re: Subqueries in Check() -- Still Intentionally Omitted?