Hi,
On 2018-06-06 15:58:16 +0200, Tomas Vondra wrote:
> The other issue is that serialize/deserialize is only a part of a problem -
> you also need to know how to do "combine", and not all aggregates can do
> that ... (certainly not in universal way).
There are several schemes where only serialize/deserialize are needed,
no? There are a number of fairly sensible schemes where there won't be
multiple transition values for the same group, no?
Greetings,
Andres Freund