Tommi Kaksonen <t2nn2t(at)gmail(dot)com> wrote:
> ---Version---
> PostgreSQL 9.2.1, compiled by Visual C++ build 1600, 64-bit
current point release for 9.2 is 9.2.18, you are some years behind.
The plan seems okay for me, apart from the on-disk sort: increase
work_mem to avoid that.
If i where you i would switch to PG 9.5 - or wait for 9.6 and parallel
execution of aggregates.
Regards, Andreas Kretschmer
--
Andreas Kretschmer
http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services