Re: Query planner and variables with constraint_exclusion

From: Aleksej Trofimov <aleksej(dot)trofimov(at)ruptela(dot)lt>
To: pgsql-novice(at)postgresql(dot)org
Subject: Re: Query planner and variables with constraint_exclusion
Date: 2011-10-13 08:26:36
Message-ID: 4E96A0BC.2090706@ruptela.lt
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On 10/13/2011 11:05 AM, Aleksej Trofimov wrote:
> Hello,
> I've got stuck with such a problem.. We are doing partitioning, but as
> I've
> read, query planner does not support variables in WHERE clause, so we
> can not use pgsql function with partitioning (where function parameters
> are passed into where clause of select). Is it possible to affect on
> planner behavior, that planner would be taking into account Variables?
> Or may be there are some other possibilities to use partitioning with
> variables in where clause? Such as dynamic sql, querying directly
> partitioned table..
>
>
May be there is a way how to cast variable constant? Or it is only
possible using dynamic sql?

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