Re: Performance inside and outside view ( WAS Re: Select the

On Thu, 12 Sep 2002, Tom Lane wrote:

> "Gaetano Mendola" <mendola@bigfoot.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.