Re: Proposal: scan key push down to heap [WIP]

On 2016-11-28 09:55:00 -0500, Robert Haas wrote:
> I think we should go with this approach.  I don't think it's a good
> idea to have the heapam layer know about executor slots.

I agree that that's not pretty.

> Even though
> it's a little sad to pass up an opportunity for a larger performance
> improvement, this improvement is still quite good.

It's imo not primarily about a larger performance improvement, but about
avoid possible regressions. Doubling deforming of wide tuples will have
noticeable impact on some workloads. I don't think we can disregard
that.

Andres