On Tue, 2007-08-14 at 12:29 -0400, Tom Lane wrote:
> "Simon Riggs" <simon@2ndquadrant.com> writes:
> > On Tue, 2007-08-14 at 12:09 -0400, Tom Lane wrote:
> >> heapam.c lines 1843-1852 presume previous xmax can be hinted
> >> immediately, ditto lines 2167-2176, ditto lines 2716-2725.
> >> I think probably we should just remove those lines --- they are only
> >> trying to save work for future tqual.c calls.
>
> > I'll check those out later tonight.
>
> [ looks closer ] Actually, we can't just dike out those code sections,
> because the immediately following code assumes that XMAX_INVALID is
> correct. So I guess we need to export HeapTupleSetHintBits from tqual.c
> and do the full pushup in these places.
[ without looking ] XMAX_INVALID is always set if we know it, so that
wouldn't be a reason to do that.
-- Simon Riggs EnterpriseDB http://www.enterprisedb.com