On Mon, Jun 21, 2021 at 4:52 PM Tom Lane <t...@sss.pgh.pa.us> wrote: > I'm willing to take some flak if there's not an easy proof that the outer > scan is single-row, but I don't think we should just up and change it > for cases where there is.
I think that's a reasonable request. I'm not sure that I believe it's 100% necessary, but it's certainly an improvement on a technical level, and given that the proposed change could impact quite a lot of plans, it's fair to want to see some effort being put into mitigating the possible downsides. Now, I'm not sure when I might have time to actually try to do the work, which kind of sucks, but that's how it goes sometimes. -- Robert Haas EDB: http://www.enterprisedb.com
