Dilip Kumar <dilipbal...@gmail.com> writes: > On Fri, Jul 4, 2025 at 9:56 PM Tom Lane <t...@sss.pgh.pa.us> wrote: >> So on the whole it seems like a research project requiring nontrivial >> effort and probably yielding only marginal gains. It's certainly not >> going to yield a back-patchable fix for this performance regression.
> Yeah that's correct. OK. I pushed the one-liner (plus comment) fix. If anyone does feel like looking into allowing subplans to run in parallel in this context, it's not stopping them from doing so. regards, tom lane