Claudio Freire <klaussfre...@gmail.com> writes:
> So correlated index scans look extra favourable vs bitmap index scans
> because bitmap heap scans consider random page costs sans correlation
> effects (even though correlation applies to bitmap heap scans as
> well).
Really? How? The index ordering has nothing to do with the order in
which heap tuples will be visited.
regards, tom lane
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