Re: POC: PLpgSQL FOREACH IN JSON ARRAY

Pavel Stehule <pavel.stehule@gmail.com>

From: Pavel Stehule <pavel.stehule@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Peter Eisentraut <peter@eisentraut.org>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2026-03-12T07:00:19Z
Lists: pgsql-hackers
Hi

čt 12. 3. 2026 v 5:30 odesílatel Tom Lane <tgl@sss.pgh.pa.us> napsal:

> Peter Eisentraut <peter@eisentraut.org> writes:
> > Maybe this could be written in such a way that it doesn't hardcode JSON
> > arrays specifically, but a type could have an iteration helper function
> > that would feed this feature?
>
> +1.  ISTM that this feature would make sense for subscriptable types,
> so one way to shoehorn it into the system without a lot of new overhead
> could be to extend struct SubscriptRoutines to offer optional support
> function(s) for iterating through all the elements of a subscriptable
> object.
>

I'll try to write second patch in this way

Regards

Pavel


>
>                         regards, tom lane
>