Re: async notification patch for dblink

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Tom Lane wrote:
> Could you do something like
> be_pid = pg_backend_pid() AS is_self_notify
> instead, to verify that it's a self-notify? (This is not quite right
> because you'd need to execute pg_backend_pid() at the remote end, but
> I'm not awake enough to remember the dblink syntax for that. Maybe
> it's too complex to be worth it, but I think demonstrating how to
> check for self-notify would be a useful bit of doco.)
>
> Otherwise it looks ok to me.

Committed. Final version attached.

Joe
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