Re: 7.4 - TODO : alter table drop foreign key

From: "Dan Langille" <dan(at)langille(dot)org>
To: Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com>
Cc: <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: 7.4 - TODO : alter table drop foreign key
Date: 2002-12-05 17:41:29
Message-ID: 3DEF4979.30970.6B688D5@localhost
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On 5 Dec 2002 at 9:31, Stephan Szabo wrote:

> When we talk about ALTER TABLE ADD FOREIGN KEY we're being imprecise, so
> I think that might be why we're talking past each other here.
>
> Technically the syntax in question is:
> ALTER TABLE <table> ADD <table constraint definition>
> where CONSTRAINT <name> is an optional leading clause in a table
> constraint definition. ADD FOREIGN KEY is a shorthand for a foreign key
> constraint (technically unnamed).

Understood.

What about allowing a named foreign key? I haven't checked the RFCs

> Thus you can also say things like:
> ALTER TABLE <table> ADD CONSTRAINT blah CHECK (foo!=0);
> to make a named check constraint.

Understood.
--
Dan Langille : http://www.langille.org/

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