On Thu, 12 Sep 2002, Tom Lane wrote:
> "Gaetano Mendola" <mendola(at)bigfoot(dot)com> writes:
> > Yes that's right it's help me,
> > but here the optimizer have some problems:
>
> What's the datatype of id_user, and why are you quoting the compared
> constant in some cases but not others? I don't think the difference
> has anything to do with the view here ...
At least in current sources it would, since it can't push down the clause
(unless I'm misreading subquery_is_pushdown_safe and the comment) through
the distinct on.