| From: | Joe Conway <mail(at)joeconway(dot)com> |
|---|---|
| To: | Markur Sens <markursens(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: C function to return double precision[][] |
| Date: | 2023-08-21 20:04:53 |
| Message-ID: | 714e6e48-1ad0-9172-2731-9682e0266dc7@joeconway.com |
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| Lists: | pgsql-hackers |
On 8/21/23 15:31, Markur Sens wrote:
> Is there any piece of code I could see how to achieve $subject ?
> I haven’t found anything in the standard library or contrib modules.
>
> I’m trying to build ArrayType ** of sorts and return a Datum of those but I can’t seem to manage memory correctly.
There is an example in PL/R here:
which points to here with number of dims == 2:
This is all generic to the element type (i.e. not specifically float8),
but the needed type conversion stuff happens in here:
https://github.com/postgres-plr/plr/blob/20a1f133bcf2bc8f37ac23da191aea590d612619/plr.c#L1109
HTH,
--
Joe Conway
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com
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