Scott Ribe wrote:
> where a <> b or (a is null and b is not null) or (a is not null and
> b is null)
In the absence of IS DISTINCT FROM, I think this has the same semantics:
where coalesce(a, b) <> coalesce(b, a)
although it's not as concise as one might wish.
- John D. Burger
MITRE
