On 27/09/15 21:58, Gavin Wahl wrote: > Somewhat harder but still possible would be using BRIN indexes to > accelerate ORDER BY. This would require a sorting algorithm that can take > advantage of mostly-sorted inputs. You would sort the page ranges by their > minimum or maximum value, then feed the sorting algorithm in that order.
An internal merge sort does well with partially-sorted input. -- Cheers, Jeremy -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
