On Mon, Jun 13, 2016 at 7:17 PM, Robert Haas <
robertmhaas@gmail.com> wrote:
>
> On Mon, Jun 13, 2016 at 3:18 AM, Amit Kapila <
amit.kapila16@gmail.com> wrote:
> > In create_grouping_paths(), we are building partial_grouping_path and same
> > is used for gather path and other grouping paths (for partial paths).
> > However, we don't use it for partial path list and sort path due to which
> > path target for Sort path is different from what we have expected. Is there
> > a problem in applying partial_grouping_path for partial pathlist?
> > Attached patch just does that and I don't see error with patch.
>
> It doesn't seem like a good idea to destructive modify
> input_rel->partial_pathlist. Applying the projection to each path
> before using it would probably be better.
>
Do you mean to have it when we generate a complete GroupAgg Path atop of the cheapest partial path?
With Regards,
Amit Kapila.