On 6/3/2024 06:25, Michael Paquier wrote:
Just to elaborate: the intention was to allow a section to be added to
every node in the plan containing information from further down and also
allow this information to propagate upwards. We happen to have buffer
information right now, but allowing something similar to be added
dynamically by extending ExplainNode and passing down a callback to
standard_ExplainOneQuery.
Or an extra hook at the end of ExplainNode() to be able to append more
information at node level? Not sure if others would agree with that,
though.
We already discussed EXPLAIN hooks, at least in [1]. IMO, extensions
should have a chance to add something to the node explain and the
summary, if only because they can significantly influence the planner
and executor's behaviour.
[1]
https://www.postgresql.org/message-id/flat/6cd5caa7-06e1-4460-bf35-00a59da3f677%40garret.ru
--
regards,
Andrei Lepikhov
Postgres Professional
