From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Stephan Szabo <sszabo@megazone23.bigpanda.com>
Cc: PostgreSQL-development <pgsql-hackers@postgreSQL.org>
Subject: Re: [GENERAL] child table doesn't inherit PRIMARY KEY?
Date: Wed, 24 Jan 2001 14:31:29 -0500 (EST)
Message-ID: <200101241931.OAA26463@candle.pha.pa.us> (raw)
In-Reply-To: <Pine.BSF.4.21.0101241120310.57849-100000@megazone23.bigpanda.com>
> On Wed, 24 Jan 2001, Bruce Momjian wrote:
>
> >
> > OK, what do people want to do with this item? Add to TODO list?
> >
> > Seems making a separat unique constraint would be easy to do and be of
> > value to most users.
>
> The problem is that doing that will pretty much guarantee that we won't
> be doing foreign keys to inheritance trees without changing that behavior
> and we've seen people asking about adding that too. I think that this
> falls into the general category of "Make inheritance make sense" (Now
> there's a todo item :) ) Seriously, I think the work on how inheritance
> is going to work will decide this, maybe we end up with a real inheritance
> tree system and something that works like the current stuff in which case
> I'd say it's probably one unique for the former and one per for the
> latter.
I smell TODO item. In fact, I now see a TODO item:
* Unique index on base column not honored on inserts from inherited table
INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail
[inherit]
So it seems the fact the UNIQUE doesn't apply to the new table is just a
manifestion of the fact that people expect UNIQUE to span the entire
inheritance tree. I will add the emails to [inherit] and mark it as
resolved.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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To: pgsql-docs@postgresql.org
Cc: pgman@candle.pha.pa.us, sszabo@megazone23.bigpanda.com, pgsql-hackers@postgreSQL.org
Subject: Re: [GENERAL] child table doesn't inherit PRIMARY KEY?
In-Reply-To: <200101241931.OAA26463@candle.pha.pa.us>
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