Richard Huxton wrote:
> Andrew Dunstan wrote:
>>
>> Actually, I think we could teach the PLs to do it - just not
>> transparently, so we'd need to mark which functions used the new
>> protocol. Such functions would get a state object as an implied first
>> argument, so in plperl it might work like this (for a
>> generate_series-like function):
>
>> To support this I think we'd need to do something like:
>>
>> create function mygs(int, int)
>> returns setof int
>> language plperl
>> with srfstate
>> as $$ ... $$;
>
> Is this not what we do with aggregate functions at present?
>
Yes, more or less. That's what made me think of it.
OTOH, before we rush out and do it someone needs to show that it's a net
win. I agree with Tom that making tuplestore faster would probably be a
much better investment of time.
cheers
andrew