Re: POC: PLpgSQL FOREACH IN JSON ARRAY

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.

            regards, tom lane