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From: Andreas Joseph Krogh <[email protected]>
To: Steve Midgley <[email protected]>
Cc: [email protected]
Subject: Re: How to ensure a log-entry is created based on state of data in other tables
Date: Thu, 9 Feb 2023 17:33:07 +0100 (CET)
Message-ID: <VisenaEmail.6a.d3040d504876c082.1863705b248@visena.app.internal.visena.net> (raw)
In-Reply-To: <CAJexoSJT_uVdMGwne8wDBEsZEMA_jfPdz41S0W9sVoj+MugOUA@mail.gmail.com>
References: <VisenaEmail.3d.88fc3a77a99e504f.18635052f66@visena.app.internal.visena.net>
	<CAJexoSJT_uVdMGwne8wDBEsZEMA_jfPdz41S0W9sVoj+MugOUA@mail.gmail.com>



På torsdag 09. februar 2023 kl. 16:08:16, skrev Steve Midgley <
[email protected] <mailto:[email protected]>>:



[…]



What is the time window required for "DONE" and "NOT_DONE" to be correct? Do 
they need to be atomic (meaning the time window is effectively 0)? Or can the 
system "notice" recent changes and keep track of done/not done after-the-fact? 
If your time window is > 0, it seems like recurring processes could be set up 
to track DONE / NOT_DONE?

Another totally different way to think about this is to create a view that 
provides answers on DONE and NOT_DONE as computed values based on the 
underlying state of the table at the time the view is queried? That would seem 
to satisfy a time window of 0?

Steve 
Yes, they need to be atomic. Either all are DONE and there is an entry in 
activity_product_log for product_id, or there is no entry in 
activity_product_log.






--
Andreas Joseph Krogh
CTO / Partner - Visena AS
Mobile: +47 909 56 963
[email protected] <mailto:[email protected]>
www.visena.com <https://www.visena.com;
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