| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(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 14:47:13 |
| Message-ID: | 20210107144713.GA8872@alvherre.pgsql |
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| Lists: | pgsql-hackers |
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.
I think we would not backpatch any of this, though.
--
Álvaro Herrera
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