Etsuro Fujita <fujita.ets...@lab.ntt.co.jp> writes:
> (2014/04/10 0:08), Tom Lane wrote:
>> TBH I think that's barely the tip of the iceberg of cases where this
>> patch will get the wrong answer.
>> Also, I don't see it doing anything to check the ordering
>> of multiple index columns
> I think that the following code in index_pathkeys_are_extensible() would
> check the ordering:
> + if (!pathkeys_contained_in(pathkeys, root->query_pathkeys))
> + return false;
Hm ... if you're relying on that, then what's the point of the new loop
at all?
regards, tom lane
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