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