Re: Constraints and Functional Dependencies
From: Marshall <marshall.spight_at_gmail.com>
Date: 24 Feb 2007 17:45:49 -0800
Message-ID: <1172367949.606658.81280_at_s48g2000cws.googlegroups.com>
Date: 24 Feb 2007 17:45:49 -0800
Message-ID: <1172367949.606658.81280_at_s48g2000cws.googlegroups.com>
On Feb 24, 11:02 am, paul c <toledobythe..._at_oohay.ac> wrote:
> (Regarding set operators, SQL UNION seems to parallel OR and JOIN to AND
> and DELETE to AND NOT. Does UPDATE parallel anything other than DELETE
> followed by UNION?)
I think of it as delete followed by insert these days, but your
approach
also works.
Marshall Received on Sun Feb 25 2007 - 02:45:49 CET