On Mon, Apr 18, 2022 at 1:10 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> The places where index AMs refer to num_heap_tuples seem to be using
> it as a ceiling on estimated index tuple counts. Given that we should
> be counting dead index entries, redefining it as you suggest would be
> wrong.
I would argue that it would be correct for the first time -- at least
if we take the behavior within heapam_index_build_range_scan (and
everywhere else) as authoritative. That's a feature, not a bug.
--
Peter Geoghegan