Re: [HACKERS] [PATCH] Rename pg_switch_xlog to pg_switch_wal

On Fri, Feb 10, 2017 at 10:16 AM, Stephen Frost <sfrost@snowman.net> wrote:
>> As someone mentioned, forcing a user to install an extension makes
>> the deprecation visible. Another option would be to have the backend
>> spit out a WARNING the first time you access anything that's
>> deprecated. Both of those are pertinent reminders to people that
>> they need to change their tools.
>
> Ugh.  Please, no.  Hacking up the backend to recognize that a given
> query is referring to a deprecated view and then throwing a warning on
> it is just plain ugly.
>
> Let's go one step further, and throw an ERROR if someone tries to query
> these views instead.

FWIW, I am of the opinion to just nuke them as the "soft of"
deprecation period has been very long. Applications should have
switched to pg_authid and pg_roles long ago already.
-- 
Michael