Copy partition definitions from one table to another

Question

I have a table USERS with columns USER_ID and NAME, that is partitioned on the USER_ID column.

Say, I want to create another table USER_PHN with columns USER_ID and PHN_NO. This table should have the same partitions on USER_ID as in the USERS table. Is it possible to copy partition definitions from the original table into the new table?

Answer 1

If users and user_phn have a referential constraint, you can use reference partitioning, if you happen to be using Oracle 11g. See Oracle® Database VLDB and Partitioning Guide 11g Release 1 (11.1) for docu.

One of the advantages here is that you have less redundant data because to partitioning key does not need a copy in the child rows. That is already defined in the FK relation.

The child table inherits the partitioning definitions from the parent table.

Answer 2

考虑在过程中编写USERS表脚本，在DDL中找到分区部分，然后用USER_PHN替换表名，然后执行它。