David Garamond <lists@zara.6.isreserved.com> writes:
> Perhaps I can make a GUID by MD5( two random numbers || a timestamp || a
> unique seed like MD5 of '/sbin/ifconfig' output)...
Adding an MD5 hash contributes *absolutely zero*, except waste of space,
to any attempt to make a GUID. The hash will add no uniqueness that was
not there before.
regards, tom lane