Re: PoC: Partial sort

Funny, I just wrote a patch to do that some minutes ago (didn't see your
email yet).

http://www.postgresql.org/message-id/CABRT9RCK=wmFUYZdqU_+MOFW5PDevLxJmZ5B=eTJJNUBvyARxw@mail.gmail.com

Regards,
Marti



On Sat, Jan 18, 2014 at 7:10 PM, Jeremy Harris <jgh@wizmail.org> wrote:

> On 13/01/14 18:01, Alexander Korotkov wrote:
>
>> Thanks. It's included into attached version of patch. As wall as
>> estimation
>> improvements, more comments and regression tests fix.
>>
>
> Would it be possible to totally separate the two sets of sort-keys,
> only giving the non-index set to the tuplesort?  At present tuplesort
> will, when it has a group to sort, make wasted compares on the
> indexed set of keys before starting on the non-indexed set.
> --
> Cheers,
>   Jeremy
>
>
>
>
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