| From: | Andreas Karlsson <andreas(at)proxel(dot)se> |
|---|---|
| To: | Alexander Korotkov <aekorotkov(at)gmail(dot)com> |
| Cc: | David Rowley <dgrowleyml(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Andres Freund <andres(at)2ndquadrant(dot)com>, Martijn van Oosterhout <kleptog(at)svana(dot)org> |
| Subject: | Re: PoC: Partial sort |
| Date: | 2014-01-01 03:14:37 |
| Message-ID: | 52C3881D.9080107@proxel.se |
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| Lists: | pgsql-hackers |
On 12/28/2013 04:51 PM, Alexander Korotkov wrote:
> I've compiled it with clang. Yeah, there was mixed declarations. I've
> rechecked it with gcc, now it gives no warnings. I didn't try it with
> visual studio, but I hope it will be OK.
I looked at this version of the patch and noticed a possibility for
improvement. You could decrement the bound for the tuplesort after every
completed sort. Otherwise the optimizations for small limits wont apply
to partial sort.
--
Andreas Karlsson
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