> On 24 Sep 2024, at 10:32, btnakamurakoukil <btnakamurakou...@oss.nttdata.com> > wrote:
> I noticed unnecessary variable "low" in index_delete_sort() > (/postgres/src/backend/access/heap/heapam.c), patch attached. What do you > think? That variable does indeed seem to not be used, and hasn't been used since it was committed in d168b666823. The question is if it's a left-over from development which can be removed, or if it should be set and we're missing an optimization. Having not read the referenced paper I can't tell so adding Peter Geoghegan who wrote this for clarification. -- Daniel Gustafsson