Re: extended statistics n-distinct on multiple columns not used when join two tables

[Pavel Stehule <pavel.stehule@xxxxxxxxx>]

Hi

út 13. 6. 2023 v 11:21 odesílatel James Pang (chaolpan) <chaolpan@xxxxxxxxx> napsal:

Hi,

     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

Regards

Pavel

 

 

Thanks,

 

James