On Mon, Feb 11, 2002 at 11:07:19AM -0500, Peter Eisentraut wrote:
> Patrick Welche writes:
>
> > I think this is right..
>
> No, it's talking about relational algebra, not SQL.
OK please ignore it then.. I was trying to do (A union B) - (A intersection B)
and wondered what to use as the -. Read sql.sgml to find union, intersect,
and found no DIFFERENCE in gram.y, so thought that the list was wrong.
Cheers,
Patrick
