(moving to -hackers)
On Tue, 13 Jun 2023 at 21:30, Pavel Stehule <pavel.stehule@gmail.com> wrote:
> út 13. 6. 2023 v 11:21 odesílatel James Pang (chaolpan) <chaolpan@cisco.com> napsal:
>> When join two table on multiple columns equaljoin, rows estimation always use selectivity = multiplied by
distinctmultiple 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?
David
