Em qui., 18 de set. de 2025 às 13:40, Tom Lane <t...@sss.pgh.pa.us> escreveu:
> I wrote: > > Sigh ... so the answer is this used to work (since commit 39df0f150) > > and then I carelessly broke it in commit a391ff3c3. If you try this > > test case in versions 9.5..11 you get a spot-on rowcount estimate. > > Serves me right for not having a test case I guess, but I'm astonished > > that nobody complained sooner. > > The attached fixes things so it works like it did pre-a391ff3c3. > > I spent some time trying to devise a test case, and was reminded > of why I didn't have one before: it's hard to make a case that > will be robust enough to not show diffs in the buildfarm. > I'll keep thinking about that though. > One question, make difference return -1.0 (float point notation)? If not, static analyzers will have less work. best regards, Ranier Vilela
