Re: PoC: Partial sort
Jeremy Harris <jgh@wizmail.org>
From: Jeremy Harris <jgh@wizmail.org>
To: pgsql-hackers@postgresql.org
Date: 2014-01-18T17:10:01Z
Lists: pgsql-hackers
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
Commits
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Implement Incremental Sort
- d2d8a229bc58 13.0 landed
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Improve memory management for external sorts.
- 0011c0091e88 9.6.0 cited