Re: Statistics import and export: difference in statistics of materialized view dumped

Jeff Davis <pgsql@j-davis.com>

From: Jeff Davis <pgsql@j-davis.com>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>, Corey Huinker <corey.huinker@gmail.com>

Date: 2025-03-11T22:38:34Z

Lists: pgsql-hackers

Attachments

v1-0001-Make-MV-statistics-depend-on-MV-data.patch (text/x-patch) patch v1-0001

On Tue, 2025-03-11 at 11:26 -0400, Tom Lane wrote:
> Right, that was what I was thinking, but hadn't had time to look in
> detail.  The postDataBound dependency isn't real helpful here, we
> could lose that if we had the data dependency.

Attached a patch.

It's a bit messier than I expected, so I'm open to other suggestions.
The reason is because materialized view data is also pushed to
RESTORE_PASS_POST_ACL, so we need to do the same for the statistics
(otherwise the dependency is just ignored).

Regards,
	Jeff Davis

Commits

Matview statistics depend on matview data.
- a0a4601765b8 18.0 landed