Re: More thoughts on sorting
От | Martijn van Oosterhout |
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Тема | Re: More thoughts on sorting |
Дата | |
Msg-id | 20090801171735.GE24672@svana.org обсуждение исходный текст |
Ответ на | Re: More thoughts on sorting (PFC <lists@peufeu.com>) |
Ответы |
Re: More thoughts on sorting
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Список | pgsql-hackers |
On Sat, Aug 01, 2009 at 09:37:11AM +0200, PFC wrote: >> PFC <lists@peufeu.com> writes: >>> - for short strings (average 12 bytes), sort is CPU-bound in strcoll() >>> - for longer strings (average 120 bytes), sort is even more CPU-bound in >>> strcoll() >> >> No news there. If you are limited by the speed of text comparisons, >> consider using C locale. >> > Actually, I think (see the bottom of my last email) that this would be a > good argument for the per-column COLLATE patch... Standard SQL COLLATE support is per column anyway, so just implementing that will solve all the problems anyway. Have a nice day, -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > Please line up in a tree and maintain the heap invariant while > boarding. Thank you for flying nlogn airlines.
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