On 3/30/21 4:09 AM, Tomas Vondra wrote:
> Hi,
>
> ...
>
> We may need to "sync" the counts for individual relations in a couple
> places (e.g. after the worker is done with the leaf, it should propagate
> the remaining delta before resetting the values to 0). Maybe multi-level
> partitioning needs some additional handling, not sure.
>
I forgot to mention one additional thing yesterday - I wonder if we need
to do something similar after a partition is attached/detached. That can
also change the parent's statistics significantly, so maybe we should
handle all partition's rows as changes_since_analyze? Not necessarily
something this patch has to handle, but might be related.
regards
--
Tomas Vondra
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