Re: [HACKERS] Open 6.5 items

> > resno's, sublevelsup corrupt when reaching rewrite system
>
> Don't remember exactly how I produced them. Haven't seen
> them again after the latest changes in the rule system. I
> think it was due to incorrect handling of unrewritten TLE's
> from group by clauses, which are now pulled out of the main
> targetlist.

Removed. I suspected you had fixed it with your last GROUP patch,
because you were addressing this exact area.

>
> > 3 = sum(x) in rewrite system is a problem
>
> Is it? I guess what is meant by this item is the problem of
> the rewriter that it must create subqueries for view
> aggregate columns if they appear in the WHERE clause.

The issue where was that aggregates can't be on the right in some cases.
Tom Lane brought this up.

>
> That entire area is a very problematic one. And for sake it
> must wait for after v6.5. Aggregates and GROUP BY in views
> are unsafe and depend on the later usage of the view.
> Consider the following:

Yes, I understand.

> > Future TODO items
> > -----------------
> > CREATE VIEW ignores DISTINCT
>
> Covered above.
>

OK.

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