út 13. 6. 2023 v 13:26 odesílatel David Rowley <dgrowle...@gmail.com> napsal:
> (moving to -hackers) > > On Tue, 13 Jun 2023 at 21:30, Pavel Stehule <pavel.steh...@gmail.com> > wrote: > > út 13. 6. 2023 v 11:21 odesílatel James Pang (chaolpan) < > chaol...@cisco.com> napsal: > >> When join two table on multiple columns equaljoin, rows estimation > always use selectivity = multiplied by distinct multiple individual > columns, possible to use extended n-distinct statistics on multiple > columns? > >> > >> PG v14.8-1, attached please check test case with details. > > > > There is not any support for multi tables statistic > > I think it's probably worth adjusting the docs to mention this. It > seems like it might be something that could surprise someone. > > Something like the attached, maybe? > +1 Pavel > David >
