Re: Performance problem in view joining UNION ALL three tables

From: Tim Gorman <tim_at_evdbt.com>
Date: Tue, 08 Jul 2014 18:35:43 -0600
Message-ID: <53BC8E5F.9090708_at_evdbt.com>

Partitioned UNION-ALL views still worked as of 11.2; attached is a sample test-case script to demonstrate.

On 7/8/14, 18:11, Juan Carlos Reyes Pacheco wrote:
> Hello, If you please have some advice.
> I have standard edition 11.2.0.3
>
> and I have view, like a primitive partitioning
>
> This is an old topic
> https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:21547067945222
> buty maybe there is a new trick on 11g.
>
> the view is like
> view a
> is
> select date,* from table_01ene1990_01ene2000
> union all
> select date,* from table_02ene2000_01ene2010
> union all
> select date,* from table_02ene2010_today
>
> I will like to know if there is some trick to get only access to the
> table,
> where the date is,
>
>
>
> In some situations I did it using a function table, the function table
> only query the specific table.
> But in other, like joinings I can't do that.
>
> The only I remember from oracle 7 an option I saw was outdated.
>
> Thank you.
>
>
>
>
>

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text/plain attachment: pvtest.sql



text/plain attachment: pvtest.lst

Received on Wed Jul 09 2014 - 02:35:43 CEST