Tom Lane wrote:
> Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> > Tom Lane wrote:
> >> If VACUUM and brin_summarize_new_values both ignore the partial
> >> range, then what else would request this? Can't we just decree
> >> that we don't summarize the partial range, period?
>
> > brin_summarize_range() can do it.
>
> So what would happen if we just don't summarize partial ranges?
Index scan would always have to read all the heap pages for that partial
range. Maybe not a big issue, but when you finish loading a table, it'd
be good to have a mechanism to summarize that partial range ...
Rather than remove the capability, I'd be inclined to make
brin_summarize_new_values summarize the final partial range, and have
VACUUM not do it. Would that be too inconsistent?
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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