On Tue, Feb 24, 2015 at 4:32 PM, Jeremy Harris <jgh@wizmail.org> wrote:
> On 23/02/15 16:40, Tomas Vondra wrote:
>> On 22.2.2015 22:30, Peter Geoghegan wrote:
>>> You should try it with the data fully sorted like this, but with one
>>> tiny difference: The very last tuple is out of order. How does that
>>> look?
>
> If this case is actually important, a merge-sort can take
> significant advantage of the partial order:
> test=# set enable_intmerge_sort to on;
What is this?
--
Peter Geoghegan