On Thu, May 17, 2018 at 10:36 AM, Amit Langote <amitlangote09@gmail.com> wrote:
> On Thu, May 17, 2018 at 10:29 PM, Robert Haas <robertmhaas@gmail.com> wrote:
>> Unless the indexing system actually can't reference the first element
>> of *pds, and -1 means the second element. But then I think we need a
>> more verbose explanation here.
>
> First element in *pds list (and the array subsequently created from
> it) contains the root table's entry. So, a -1 does mean the 2nd entry
> in that list/array. A 0 in the indexes array always refers to a leaf
> partition and hence an index into the array for leaf partitions.
All right, so let's just say that explicitly. Maybe something like
the attached.
--
Robert Haas
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