Re: constraint exclusion with ineq condition (Re: server hardware tuning.)

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.)

What are these two tables partitioned by?

On Thu, Feb 14, 2019, 5:03 AM suganthi Sekar <suganthi@uniphore.com<mailto:suganthi@uniphore.com> wrote:
Hi,

Thanks, i know if explicitly we give in where condition it is working.

i thought with below parameter in Postgresq11 this issue is fixed ?

 enable_partitionwise_join  to 'on';

 what is the use of enable_partitionwise_join  to 'on';

Thanks for your response.

Regards
Suganthi Sekar
________________________________
From: Justin Pryzby <pryzby@telsasoft.com<mailto:pryzby@telsasoft.com>>
Sent: 14 February 2019 16:10:01
To: suganthi Sekar
Cc: pgsql-performance@lists.postgresql.org<mailto: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'