On Mon, Feb 11, 2002 at 11:43:45AM -0500, Tom Lane wrote:
> Patrick Welche <prlw1@newn.cam.ac.uk> writes:
> > I think this is right..
>
> I think not. The section in question is defining the mathematical
> terms of set theory, not their representation in SQL.
>
> (BTW, is this file even still used? Right offhand I can't see it
> anywhere in the 7.2 documentation set.)
I have no idea, I just grep -i intersect * in doc/src/sgml and sql.sgml
seemed to have the right sort of list in it, just that whereas UNION
and INTERSECT have direct correspondence to SQL, DIFFERENCE <-> EXCEPT,
so it just looked wrong to me. So, please ignore..
Cheers,
Patrick