Re: updated SORT/LIMIT patch
| От | Tom Lane |
|---|---|
| Тема | Re: updated SORT/LIMIT patch |
| Дата | |
| Msg-id | 2097.1178241568@sss.pgh.pa.us обсуждение исходный текст |
| Ответ на | updated SORT/LIMIT patch (Gregory Stark <stark@enterprisedb.com>) |
| Ответы |
Re: updated SORT/LIMIT patch
|
| Список | pgsql-patches |
Gregory Stark <stark@enterprisedb.com> writes:
> Updated patch against cvs update in case it makes applying easier.
Applied with revisions --- notably, I avoided adding any overhead to
HEAPCOMPARE() by the expedient of reversing the logical sort order
before heapify'ing. We couldn't have done that before the NULLS_FIRST
patch went in, but now it's trivial to make the sort order reverse
fully.
Since you didn't include any documentation patch for the
optimize_bounded_sort GUC variable, I assumed it was meant only for
debugging and hid it behind #ifdef DEBUG_BOUNDED_SORT.
regards, tom lane
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