I don't know how this is in other DBMS, but e. g. Sybase SQL Anywhere 7, which we use,
does not allow a part of a primary key to be NULL. Does anybody have a link to the
spec, so we could check?
-------- Original Message --------
Subject: Re: Jonas & Oracle (21-Aug-2001 10:05)
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
> Hi,
>
> Indeed, there is a problem when a primary key field has a 'null' value.
> But I'm not sure that a field, which is a part of the primary key,
> may logically have a 'null' value.
>
> Kind regards.
> H�l�ne.
> --
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