From: saads@umich.edu
To: pgsql-sql@postgresql.org
Subject: Creating a foreign key on the Union of two tables
Date: 6 Apr 2003 14:53:50 -0700
Message-ID: <a811aba0.0304061353.664e2263@posting.google.com> (raw)
I have 2 tables "A" and "B" in mySQL. They both have an attribute 'id'
which is unique between the 2 tables. I want the union of these 2
attributes to be a foreign key in a 3rd table "C". How do I specify
this constraing in sql (mySQL) in table C? And for complex reasons I
cannot merge the 2 tables A and B.
Thanks,
-Saad
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To: pgsql-sql@postgresql.org
Cc: saads@umich.edu
Subject: Re: Creating a foreign key on the Union of two tables
In-Reply-To: <a811aba0.0304061353.664e2263@posting.google.com>
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