From: | David Fetter <david(at)fetter(dot)org> |
---|---|
To: | Itagaki Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Triggers on columns |
Date: | 2009-09-03 02:10:18 |
Message-ID: | 20090903021018.GO8410@fetter.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
On Thu, Sep 03, 2009 at 10:52:09AM +0900, Itagaki Takahiro wrote:
> Here is a patch to implement "Support triggers on columns" in our ToDo list.
>
> The syntax is:
> CREATE TRIGGER name
> BEFORE UPDATE OF col1, col12, ...
> ON tbl FOR EACH ROW EXECUTE PROCEDURE func();
Kudos!
>
> I consulted the previous work following:
> Column-level triggers (From: Greg Sabino Mullane, Date: 2005-07-04)
> http://archives.postgresql.org/pgsql-patches/2005-07/msg00107.php
> and completed some under-construction parts.
>
> It's still arguable that we should add dependencies from column
> triggers to referenced columns.
+1 for adding the dependencies.
Cheers,
David.
> In the present patch, dropeed
> columns are just ignored and always considered as not-modified.
> Please grep with "TODO: (TRIGGER)" to check the issue.
>
> Comments welcome.
>
> Regards,
> ---
> ITAGAKI Takahiro
> NTT Open Source Software Center
>
> --
> Sent via pgsql-hackers mailing list (pgsql-hackers(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-hackers
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter
Skype: davidfetter XMPP: david(dot)fetter(at)gmail(dot)com
Remember to vote!
Consider donating to Postgres: http://www.postgresql.org/about/donate
From | Date | Subject | |
---|---|---|---|
Next Message | Robert Haas | 2009-09-03 02:12:04 | Re: Schedule for 8.5 Development |
Previous Message | Itagaki Takahiro | 2009-09-03 01:52:09 | Triggers on columns |