Hi, perhaps you can use triggers for some tables.
Regards.

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________________________________
From: Mitar <mmi...@gmail.com>
Sent: Saturday, December 22, 2018 1:21:49 AM
To: Kevin Brannen
Cc: pgsql-general@lists.postgresql.org
Subject: Re: Watching for view changes

Hi!

On Thu, Dec 20, 2018 at 12:54 PM Kevin Brannen 
<kbran...@efji.com<mailto:kbran...@efji.com>> wrote:
Hmm, I guess I could see that as long as the DB wasn't too [write] busy, else 
you'd be flooded with notifications.

Sure. But this could be resolved by allowing notifications to be batched 
together. Debounce them. So could maybe configure how often you want such 
notifications and if they are more often they would be combined together into 
one.

Maybe it's a useful idea for you ... or maybe not. 😊

Thanks. Yes, this is one approach to do it. Hooking into every modify call at 
the app level and in this way have some information what is changing. I would 
prefer doing it in the database though, so that it could be independent from 
the source of the change. Moreover, not all UPDATE queries really do end up 
updating the data.


Mitar

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