From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Rod Taylor <rbt(at)rbt(dot)ca> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: TODO: DROP COLUMN .. CASCADE |
Date: | 2003-03-06 18:40:01 |
Message-ID: | 200303061840.h26Ie2m16382@candle.pha.pa.us |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
OK, I will remove the TODO item:
* Require DROP COLUMN CASCADE for a column that is part of a multi-column index
Can we promote the index drop to a warning if it is multi-column?
---------------------------------------------------------------------------
Rod Taylor wrote:
-- Start of PGP signed section.
> > > Basically I think this proposal would introduce a weird, confusing
> > > dichotomy of behavior between single- and multi-column indexes.
> > > And as Rod pointed out, you'd logically have to do the same for CHECK
> > > constraints depending on whether they mention one or several columns.
> > > (And what of multicolumn foreign keys?) I see much confusion ahead,
> > > and no payback.
> >
> > I do see the confusion argument, but I also see cases where folks are
> > losing the use of an index for single-column lookups. Others?
>
> So long as the user has NOTICES enabled, they should see what else was
> dropped along with it.
>
> Besides, we should encourage schema modifications to be done in
> transactions, thus they can rollback if they're not happy with the
> results.
>
> --
> Rod Taylor <rbt(at)rbt(dot)ca>
>
> PGP Key: http://www.rbt.ca/rbtpub.asc
-- End of PGP section, PGP failed!
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
From | Date | Subject | |
---|---|---|---|
Next Message | Merlin Moncure | 2003-03-06 19:02:21 | Re: Aggregate "rollup" |
Previous Message | Antti Haapala | 2003-03-06 18:30:57 | Re: TODO: DROP COLUMN .. CASCADE |