On Sun, Feb 04, 2018 at 05:06:38PM +0200, Mariel Cherkassky wrote: > Great, it solved the issue. Seems problematic that the planner do full > scans on all partitions in the first case isnt it ? Seems like a bug ?
See also: https://www.postgresql.org/message-id/20170725131650.GA30519%40telsasoft.com https://www.postgresql.org/message-id/20170825154434.GC16287%40telsasoft.com Justin 2018-02-04 16:54 GMT+02:00 Andreas Kretschmer <andr...@a-kretschmer.de>: > > > > > Am 04.02.2018 um 13:19 schrieb Mariel Cherkassky: > > > >> I checked the plan of the next query : > >> explain select count(*) from log_full where end_date between > >> to_date('2017/12/03','YY/MM/DD') and to_date('2017/12/03','YY/MM/DD'); > >> > >> > > can you rewrite the query to > > > > ... where end_date between '2017/12/03' and '2017/12/03' > > > > maybe the planner should be smart enough to do that for you, but obvously > > he can't. So it's a workaround, but it seems to solve the problem.