Yeah, the planner doesn't know that call_created_date can be limited on both tables unless you tell it specify it in the where condition as Laurenz said on another thread.
Both table Portion by same column call_created_date ________________________________ From: Michael Lewis <mlewis@entrata.com> Sent: 14 February 2019 19:35:48 To: suganthi Sekar Cc: Justin Pryzby; pgsql-performance@lists.postgresql.org Subject: Re: constraint exclusion with ineq condition (Re: server hardware tuning.)
On Thu, Feb 14, 2019 at 10:38:36AM +0000, suganthi Sekar wrote: > u mean the below parameter need to set on . its already on only. > alter system set constraint_exclusion to 'on';
No, I said: > You can work around it by specifying the same condition on b.call_created_date: > > AND b.call_created_date >='2017-11-01' AND b.call_created_date<'2017-11-30'