From: | David Fetter <david(at)fetter(dot)org> |
---|---|
To: | Иван Марков <aesthete2005(at)gmail(dot)com> |
Cc: | PostgreSQL General <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Need help to dynamically access to colomns in function! |
Date: | 2008-12-17 21:45:30 |
Message-ID: | 20081217214530.GG6793@fetter.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
On Tue, Dec 16, 2008 at 11:37:17PM +0300, Иван Марков wrote:
> Hello. I have table classif with columns:
> ... , group1, group2, group3, ... , group48, ...
That's a very poor design because it's both denormalized and has very
poor naming. There are likely plenty of other things wrong with it,
too. Check http://thedailywtf.com/ for systems similar to yours. I
suspect it won't take long to find some.
> In function i do query and want run on every row and dynamically
> operate on columns from group1 to group20. I do something like this:
Nothing will really help until you fix your design, and dynamic
querying will only lead you further down this rat-hole.
The answer to, "how do I shoot myself in the foot?" is "Don't."
Cheers,
David.
--
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 | Craig Ringer | 2008-12-17 22:41:19 | Re: pglib.dll for windows ce |
Previous Message | Adrian Klaver | 2008-12-17 21:25:51 | Re: Copy/delete issue |