Re: Parallel INSERT (INTO ... SELECT ...)

On Sun, Oct 11, 2020 at 1:05 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> On Sat, Oct 10, 2020 at 5:25 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> >
> > 8. You have made changes related to trigger execution for Gather node,
> > don't we need similar changes for GatherMerge node?
> >
> ..
> >
> > 10. Don't we need a change similar to cost_gather in
> > cost_gather_merge? It seems you have made only partial changes for
> > GatherMerge node.
> >
>
> Please ignore these two comments as we can't push Insert to workers
> when GatherMerge is involved as a leader backend does the final phase
> (merge the results by workers). So, we can only push the Select part
> of the statement.
>

Precisely, that's why I didn't make those changes for GatherMerge.

Regards,
Greg Nancarrow
Fujitsu Australia