Re: BUG #15523: \df command not working in psql 10.4 postgres 11.1version

On 2018-Nov-27, PG Bug reporting form wrote:

> PostgreSQL version: 11.1
> Operating system:   macOS High Sierra
> Description:        
> 
> 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.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services