On Tue, Oct 10, 2023 at 11:09 AM Richard Guo <guofengli...@gmail.com> wrote: > Do you mean the const-folding? It happens in the preprocessing phase, > specifically in eval_const_expressions().
Thanks. > Hm, I don't think so. get_gating_quals is called in createplan.c, where > we've selected the best path, while the optimization with my code > happens much earlier, when we set size estimates for a base relation. > Neither of these two is a duplicate of the other. I think the theory > here is that it's always a win to mark a rel as dummy if possible as > early as we can. Right. Do you have an example where this could be demonstrated? -- Best Wishes, Ashutosh Bapat
