Re: question about partitioning

I don't know how you would partition by size.
Date is a good candidate, and roughly wouldn't you have the same number of tx's/day
You'll only benefit query performance if you include the partitioning column in the where clause.
If you have a surrogate pk, you could also use this to partition.  Using a range key you would probably get relatively
constantpartition size. 

Doug



-----Original Message-----
From: pgsql-sql-owner@postgresql.org [mailto:pgsql-sql-owner@postgresql.org] On Behalf Of Joshua Gooding
Sent: Thursday, June 24, 2010 2:31 PM
To: pgsql-sql@postgresql.org
Subject: Re: [SQL] question about partitioning

I think I replied to the individual and not to the list before....

As of right now size doesn't matter, I need to partition it via a date.
10 partitions, 10 weeks worth of data.

I was thinking of partitioning it off every 32GB of data, but that is
not exactly what I am looking to do.

Joshua Gooding


On 6/24/2010 11:06 AM, Jasen Betts wrote:
> On 2010-06-24, Joshua Gooding<JGooding@ttitech.net>  wrote:
>
>> Right now I am in the process of migrating an Oracle DB over to Postgres
>> 8.4.3.  The table is partitioned by size.  Is there anyway to partition
>> the new postgres table by size?  I created some partitions for the new
>> table, but I didn't give postgres any rules to partition by, so I have
>> 250M test records in one table.  Any ideas or thoughts on how to build
>> the rules for the table by size would be greatly appreciated.
>>
> by size of what?
>
>

--
Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-sql