Re: Limits

On Jul 25, 2:58 pm, JOG <j..._at_cs.nott.ac.uk> wrote:
> For instance if we have relation:
> R := {w, x, y}
>
> where the tuples are:
> w := (a:1, b:1)
> x := (a:2, b:2)
> y := (a:3, b:2)
>
> then "ordering by a" yields a total ordering over R:
> {(w, x), (w,y), (x,y)}
>
> but "ordering by b" gives the partial ordering:
> {(w, x), (w,y)}

OK. But who the recepient of the ORDER BY output? I assume it is some sort of SQL client. Can it understand partial order? Received on Sat Jul 26 2008 - 02:17:14 CEST