> On 11 Jan 2024, at 18:27, Adrian Klaver <adrian.kla...@aklaver.com> wrote:
> 
> On 1/11/24 08:48, Adrian Klaver wrote:
>> On 1/11/24 08:04, Alban Hertroijs wrote:
> 
>>> The drawback, as mentioned, being that we need to maintain those functions 
>>> in each deployment, which is a bit of a hassle (albeit a minor one) because 
>>> we need to customise both the TDV side and the PostgreSQL side in that 
>>> case. Our preferred solution would be to just add a few entries to the TDV 
>>> database-specific capabilities file (as described in my initial message)
>> Are you referring to?:
>> "It currently have this:
>> ToDatetimeOffsetNL(~any) : ciscache.ToDatetimeOffsetNL($1)
>> ToDatetimeOffset(~any,~any) : ciscache.ToDatetimeOffset($1, $2)
>> "
> 
> It finally dawned on me, you want to replace the user defined functions above 
> with Postgres builtins only. Try as I might I could not come with that 
> solution.

Exactly. I was having the same problem of finding a solution, quite to my 
surprise.

>> I thought the issue there was maintaining the two Postgres functions?

Yup, those two functions in fact.

There will be at least 3 separate deployments, while maintenance of the 
database(-schema) contents is the responsibility of the 3rd party application 
(TDV). PG is used as a caching DB here, we therefore intend to treat the data 
in it as volatile; it shouldn’t hurt if we decide to recreate the caches from 
scratch from source data. Having custom code in there not under control of the 
3rd party application breaks that guideline.

If they’re necessary, then so be it, but I can’t shake the feeling that we can 
achieve this without custom code in the database.

Regards,

Alban Hertroys
--
There is always an exception to always.






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