Re: BUG #15523: \df command not working in psql 10.4 postgres 11.1 version - Mailing list pgsql-bugs

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> On 2018-Nov-27, PG Bug reporting form wrote:
>> ERROR:  column p.proisagg does not exist
>> LINE 6:   WHEN p.proisagg THEN 'agg'

> Ugh ... looks like we should have a test script that runs psql against
> all older supported versions with all backslash commands to ensure
> everything works correctly.  Cross-version support is not complicated,
> we just need to remind people to do it.

No, this appears to be a forward-compatibility problem not a
backward-compatibility one.

Getting a time machine *is* complicated.

            regards, tom lane