Bang a trigger on to populate a new column and partition on that.
Alternatively, use dbms_utility.get_hash_value to see how your varchar2 map out across 4
partitions. You might be able to get away with just a range on year and hash on varchar2.
Connor
- Surendra.Tirumala_at_ky.gov wrote:
> Hi,
>
> I have a table with several columns which include a NUMBER(year) and a
> VARCHAR(some code) columns. The VARCHAR column has values that start with
> either 1 or 2 or 3 or 4. I would like to have composite range partition key
> based on YEAR and the first digit of the VARCHAR column. Is there any way I
> can accomplish this? Can I use some function like SUBSTR to partition the
> table based on first digit of VARCHAR column data?
>
> Thanks for your help.
> Surendra
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Connor McDonald
Co-author: "Mastering Oracle PL/SQL - Practical Solutions"
ISBN: 1590592174
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Received on Thu Aug 26 2004 - 21:46:06 CDT