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List:       postgresql-general
Subject:    Re: [HACKERS] primary_conninfo missing from pg_stat_wal_receiver
From:       Michael Paquier <michael.paquier () gmail ! com>
Date:       2016-06-30 23:50:38
Message-ID: CAB7nPqQBePNnT2LjJ1b63WU7A8UWH3aSdO88VLCv07ww9oof=g () mail ! gmail ! com
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On Fri, Jul 1, 2016 at 8:48 AM, Alvaro Herrera <alvherre@2ndquadrant.com> wrote:
> Michael Paquier wrote:
>> Yeah, I know. Now my opinion regarding this view is that we should
>> show information about a currently-working WAL receiver, and that it
>> has nothing to do with reporting information of its previous startup state.
>> That's more consistent with the WAL sender.
>
> Okay, that argument I buy.
>
> I suppose this function/view should report no row at all if there is no
> wal receiver connected, rather than a view with nulls.

The function returns PG_RETURN_NULL() so as we don't have to use a
SRF, and the view checks for IS NOT NULL, so there would be no rows
popping up.
-- 
Michael


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