Justin Pryzby <pry...@telsasoft.com> writes:
> On Fri, Nov 10, 2017 at 04:19:41PM -0500, Tom Lane wrote:
>> One idea is to say that relpages = reltuples = 0 is only the state that
>> prevails for a freshly-created table, and that VACUUM or ANALYZE should
>> always set relpages to at least 1 even if the physical size is zero.
>> Dunno if that would confuse people.
> What about adding && rel->rd_rel->reltuples==0, and make VACUUM/ANALYZE
> instead
> set only reltuples=1, since that's already done at costsize.c: clamp_row_est()
> and therefor no additional confusion?
1 tuple in 0 pages is a physically impossible situation, so I'm quite
sure that way *would* confuse people.
regards, tom lane
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