Re: Correction in doc of failover ready steps - Mailing list pgsql-docs

On Mon, Jul 22, 2024 at 10:59 AM shveta malik <shveta.malik@gmail.com> wrote:
>
> On Mon, Jul 22, 2024 at 10:46 AM shveta malik <shveta.malik@gmail.com> wrote:
> >
> > Hi,
> >
> > We have a query in failover-ready doc referring to
> > pg_subscription_rel. Unlike pg_subscription, pg_subscription_rel gives
> > results only when connected to the database having the
> > subscription(s). If we run the concerned query on any other database,
> > it will give incomplete results i.e. it will give info on main slots
> > leaving table sync slots (if any).
> > Thus the failover-ready steps which queries pg_subscription_rel need
> > to mention that the concerned query needs to be run on the database(s)
> > that includes the failover enabled subscription(s).  Corrected the doc
> > for the same.
>
> On rethinking, since pg_subscription query needs to be run only once
> on *any* database to get combined results of all main slots while
> pg_subscription_rel query needs to be run on each database having
> concerned subscription (and table), does it makes sense to separate
> the 2 queries instead of having UNION ? Thoughts?
>

I think so. Let's see if Hou-San or anyone else has better ideas to
fetch this information.

--
With Regards,
Amit Kapila.