Re: Can I getting a unique ID from a select

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От Bill Moran
Тема Re: Can I getting a unique ID from a select
Дата
Msg-id 20070301112453.173b4770.wmoran@collaborativefusion.com
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Ответ на Can I getting a unique ID from a select  ("Timasmith" <timasmith@hotmail.com>)
Список pgsql-general
In response to "Timasmith" <timasmith@hotmail.com>:

> I am using hibernate, using a view like a read only table and I need a
> primary key each time a select is issued.
>
> So in Oracle terms this might work, though I am skeptical that
> Hibernate is going to return a cached result.
>
> create view myview as
> select rownum, t1.field, t2.field
> from tableOne t1, tableTwo t2
> where t1.key = t2.fkey
>
> select * from myview
>
> But what I really need is
>
> select makemeauniquekey, t1.field, t2.field
> ...
>
> Maybe there is no way I think...  incrementing a sequence per select
> is untenable.

Create a sequence and use nextval().

--
Bill Moran
Collaborative Fusion Inc.

wmoran@collaborativefusion.com
Phone: 412-422-3463x4023

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