title: How to create sub partition in already interval partitioned table in oracle
body: <p>I have a table which is interval partitioned on date column. I want to sub partition on these already created partition into list partitioning.</p>
  <p>How can I do this in Oracle?</p>
  <p>Suppose there is a table in which there exists a date column and a region column along with the other columns.</p>
  <p>Table is already interval partitioned with this date column.</p>
  <p>Now I want these interval partition to sub partition on the basis on the region column.</p>
  <p>How will it be possible?</p>