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

On Mon, Oct 5, 2020 at 4:53 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>
> On Mon, Oct 5, 2020 at 4:26 PM Bharath Rupireddy
> <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> wrote:
> >
> > On Wed, Sep 30, 2020 at 7:38 AM Greg Nancarrow <gregn4422(at)gmail(dot)com> wrote:
> > >
> >
> > I have one question which is common to both this patch and parallel
> > inserts in CTAS[1], do we need to skip creating tuple
> > queues(ExecParallelSetupTupleQueues) as we don't have any tuples
> > that's being shared from workers to leader?
> >
>
> As far as this patch is concerned we might need to return tuples when
> there is a Returning clause. I think for the cases where we don't need
> to return tuples we might want to skip creating these queues if it is
> feasible without too many changes.

+1

--
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com