Re: Statistics Import and Export

On Mon, 2024-05-06 at 23:43 -0400, Corey Huinker wrote:
>
> v21 attached.
>
> 0003 is the statistics changes to pg_dump, adding the options -X / --
> statistics-only, and the derivative boolean statisticsOnly. The -P
> option is already used by pg_restore, so instead I chose -X because
> of the passing resemblance to Chi as in the chi-square statistics
> test makes it vaguely statistics-ish. If someone has a better letter,
> I'm listening.
>
> With that change, people should be able to use pg_dump -X --table=foo
> to dump existing stats for a table and its dependent indexes, and
> then tweak those calls to do tuning work. Have fun with it. If this
> becomes a common use-case then it may make sense to get functions to
> fetch relation/attribute stats for a given relation, either as a
> formed SQL statement or as the parameter values.

Can you explain what you did with the
SECTION_NONE/SECTION_DATA/SECTION_POST_DATA over v19-v21 and why?

Regards,
    Jeff Davis