| From: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
| Cc: | Tatsuro Yamada <tatsuro(dot)yamada(dot)tf(at)nttcom(dot)co(dot)jp>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: list of extended statistics on psql |
| Date: | 2021-01-07 15:56:26 |
| Message-ID: | 61cba5af-5a58-6bda-610c-420077b780c3@enterprisedb.com |
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| Lists: | pgsql-hackers |
On 1/7/21 3:47 PM, Alvaro Herrera wrote:
> On 2021-Jan-07, Tomas Vondra wrote:
>
>> On 1/7/21 1:46 AM, Tatsuro Yamada wrote:
>
>>> I overlooked the check for MCV in the logic building query
>>> because I created the patch as a new feature on PG14.
>>> I'm not sure whether we should do back patch or not. However, I'll
>>> add the check on the next patch because it is useful if you decide to
>>> do the back patch on PG10, 11, 12, and 13.
>>
>> BTW perhaps a quick look at the other \d commands would show if there are
>> precedents. I didn't have time for that.
>
> Yes, we do promise that new psql works with older servers.
>
Yeah, makes sense. That means we need add the check for 12 / MCV.
> I think we would not backpatch any of this, though.
I wasn't really planning to backpatch any of this, of course.
regards
--
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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