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Date: Tue, 30 Jul 2024 11:50:48 -0700
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Subject: Re: Trigger usecase
To: sud <suds1434@gmail.com>, Laurenz Albe <laurenz.albe@cybertec.at>,
 "David G. Johnston" <david.g.johnston@gmail.com>
Cc: pgsql-general <pgsql-general@lists.postgresql.org>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
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On 7/30/24 11:46, sud wrote:
> 
> On Tue, Jul 30, 2024 at 10:54 PM Laurenz Albe <laurenz.albe@cybertec.at 
> <mailto:laurenz.albe@cybertec.at>> wrote:
> 
> 
>     It is largely a matter of taste.
> 
>     The advantage of a trigger is that it works even if somebody
>     bypasses the application
>     to insert data.
> 
>     I think that triggers are easy to debug, but again, that's a matter
>     of taste.
> 
> 
> Thank you David and Laurenz.
> 
> Creating triggers to populates some audit table or say populating data 
> in audit columns (created_by, updated_by,created_date,updated_date) is 
> fine i believe, however this use case was to load/persist data in table 
> with SCD-2 style, so is it good idea to use the trigger for such use case?
> 
> Not sure of the exact pros and cons, but we were following certain rules 
> like , if it's business logic which needs to be implemented in Database, 
> then it should not be done using triggers but rather should be done 
> through database procedure/functions. Hope this understanding correct.

Triggers have to use procedures/functions so I am not understanding the 
issue.

> 
> Regards
> Sud

-- 
Adrian Klaver
adrian.klaver@aklaver.com