| From: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Claudio Freire <klaussfreire(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: bitmaps and correlation |
| Date: | 2019-12-01 16:00:20 |
| Message-ID: | 20191201160019.GI16647@telsasoft.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On Sun, Dec 01, 2019 at 12:34:37PM +0900, Michael Paquier wrote:
> On Sat, Nov 02, 2019 at 03:26:17PM -0500, Justin Pryzby wrote:
> > Attached is a fixed and rebasified patch for cfbot.
> > Included inline for conceptual review.
>
> Your patch still causes two regression tests to fail per Mr Robot's
> report: join and select. Could you look at those problems? I have
> moved the patch to next CF, waiting on author.
The regression failures seem to be due to deliberate, expected plan changes.
I think the patch still needs some discussion, but find attached rebasified
patch including regression diffs.
Justin
| Attachment | Content-Type | Size |
|---|---|---|
| v3-0001-Use-correlation-statistic-in-costing-bitmap-scans.patch | text/x-diff | 17.4 KB |
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