| From: | Andrew - Supernews <andrew+nonews(at)supernews(dot)com> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: SELECT Rules or stored procedure |
| Date: | 2006-01-20 10:52:38 |
| Message-ID: | slrndt1g7l.d6t.andrew+nonews@atlantis.supernews.net |
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| Lists: | pgsql-general |
On 2006-01-19, "Jim C. Nasby" <jnasby(at)pervasive(dot)com> wrote:
> On Tue, Jan 17, 2006 at 09:55:42PM -0700, Assad Jarrahian wrote:
>> q2) How does one get access to the rows just selected in the CREATE
>> RULE computation?
>
> Via NEW and OLD. Read Chapter 34 of the documentation.
He's talking about a SELECT rule. A SELECT rule is no more and no less than
a view - you can do nothing with select rules that you can't do with a
normal view.
(You can only have one SELECT rule, it must be named _RETURN, and it must
be a DO INSTEAD SELECT rule. If you put such a rule on a plain table, you
will find that the table changes into a view.)
--
Andrew, Supernews
http://www.supernews.com - individual and corporate NNTP services
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