Re: heapgettup() with NoMovementScanDirection unused in core? - Mailing list pgsql-hackers

David Rowley <dgrowleyml@gmail.com> writes:
> On Wed, 1 Feb 2023 at 03:02, Melanie Plageman <melanieplageman@gmail.com> wrote:
>> I previously had the asserts here, but I thought perhaps we shouldn't
>> restrict table AMs from using NoMovementScanDirection in whatever way
>> they'd like. We care about protecting heapgettup() and
>> heapgettup_pagemode(). We could put a comment in the table AM API about
>> NoMovementScanDirection not necessarily making sense for a next() type
>> function and informing table AMs that they need not support it.

> hmm, but the recent discovery is that we'll never call ExecutePlan()
> with NoMovementScanDirection, so what exactly is going to call
> table_scan_getnextslot() and table_scan_getnextslot_tidrange() with
> NoMovementScanDirection?

Yeah.  This is not an AM-local API.

            regards, tom lane