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help / color / mirror / Atom feedFrom: Jan Ostrochovsky <jan.ostrochovsky@mobiletech.sk>
To: Metatrader EA <metatraderea@gmail.com>
Cc: pgsql-sql <pgsql-sql@postgresql.org>
Subject: Re: Dynamic queries for Partitions
Date: Thu, 24 Nov 2016 10:22:49 +0100 (CET)
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Hello Bill,
if I understand correctly, you need to have constraint exclusion turned on and be careful about types - types in WHERE condition should be the same as those with CHECK constraint in partitioned table. Then you won't need 2 steps, but just one - one SELECT from master table fits all. Details are in the PostgreSQL documentation (Partitioning).
Jano
> From: "Metatrader EA" <metatraderea@gmail.com>
> To: "pgsql-sql" <pgsql-sql@postgresql.org>
> Sent: Wednesday, 23 November, 2016 15:54:03
> Subject: [SQL] Dynamic queries for Partitions
> Hi,
> When I run one query on one partitioned table.
> Select * from customer where opendate = (date_trunc('month', current_date)+'11
> days'::interval)::date ;
> This query will do that postgres will check all my partitions.
> How can I do ?
> Step 1 generate one sql that will be like "Select * from customer where opendate
> = '2016-11-01' ;
> Step 2 :: Then run code from step1.
> Any advice?
> //Bill
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To: pgsql-sql@postgresql.org
Cc: jan.ostrochovsky@mobiletech.sk, metatraderea@gmail.com
Subject: Re: Dynamic queries for Partitions
In-Reply-To: <1685623271.4216209.1479979369717.JavaMail.zimbra@mobiletech.sk>
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