On Wed, Jul 28, 2021 at 8:04 PM PG Bug reporting form <
noreply(at)postgresql(dot)org> wrote:
> The following bug has been logged on the website:
>
> Bug reference: 17127
> Logged by: Zhou Digoal
> Email address: digoal(at)126(dot)com
> PostgreSQL version: 14beta2
> Operating system: CentOS 7.7 x64
> Description:
>
> HI, postgresql drop column cann't delete from pg_attribute, so it will up
> to
> 1600 limits soon when add and drop column frequenc.
>
>
Yes, this fact is explicitly documented. See the last paragraph here:
https://www.postgresql.org/docs/13/limits.html
So, it is not a bug, and, IMO, it is not a limitation worth removing.
David J.