Re: Add %r substitution for psql prompts to show recovery status

> On Wed, Dec 6, 2017 at 9:19 PM, Ian Barwick <ian.barwick@2ndquadrant.com> wrote:
>> Note this substitution sends a "pg_is_in_recovery()" query to the server
>> each time it's encountered; unless there's something I'm overlooking I
>> think that's the only reliable way to determine current recovery status.
> 
> That seems kinda painful.
> 
> And what happens in an aborted transaction?

Yeah. I think we need some from help backend for this. For example, a
parameter status message can be used here.  If PostgreSQL moves to the
recovery state or vice versa, PostgreSQL sends the parameter status
message to frontend.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp