Re: Consider low startup cost in add_partial_path - Mailing list pgsql-hackers

Hi,

For the record, here is the relevant part of the Incremental Sort patch
series, updating add_partial_path and add_partial_path_precheck to also
consider startup cost.

The changes in the first two patches are pretty straight-forward, plus
there's a proposed optimization in the precheck function to only run
compare_pathkeys if entirely necessary. I'm currently evaluating those
changes and I'll post the results to the incremental sort thread.


regards

-- 
Tomas Vondra                  http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services