Example 4-18, for a range-list partitioned table, illustrates how using a subpartition template can help you stripe data across tablespaces. In this example, a table is created where the table subpartitions are vertically striped, meaning that subpartition n from every partition is in the same tablespace.
If you specified the tablespaces at the partition level (for example, tbs_1 for partition q1_1999, tbs_2 for partition q2_1999, tbs_3 for partition q3_1999, and tbs_4 for partition q4_1999) and not in the subpartition template, then the table would be horizontally striped. All subpartitions would be in the tablespace of the owning partition.
Example 4-18 Creating a range-list partitioned table with a subpartition template
CREATE TABLE stripe_regional_sales
( deptno number, item_no varchar2(20),
txn_date date, txn_amount number, state varchar2(2))
PARTITION BY RANGE (txn_date)
SUBPARTITION BY LIST (state)
SUBPARTITION TEMPLATE
(SUBPARTITION northwest VALUES ('OR', 'WA') TABLESPACE tbs_1,
SUBPARTITION southwest VALUES ('AZ', 'UT', 'NM') TABLESPACE tbs_2,
SUBPARTITION northeast VALUES ('NY', 'VM', 'NJ') TABLESPACE tbs_3,
SUBPARTITION southeast VALUES ('FL', 'GA') TABLESPACE tbs_4,
SUBPARTITION midwest VALUES ('SD', 'WI') TABLESPACE tbs_5,
SUBPARTITION south VALUES ('AL', 'AK') TABLESPACE tbs_6,
SUBPARTITION others VALUES (DEFAULT ) TABLESPACE tbs_7
)
(PARTITION q1_1999 VALUES LESS THAN ( TO_DATE('01-APR-1999','DD-MON-YYYY')),
PARTITION q2_1999 VALUES LESS THAN ( TO_DATE('01-JUL-1999','DD-MON-YYYY')),
PARTITION q3_1999 VALUES LESS THAN ( TO_DATE('01-OCT-1999','DD-MON-YYYY')),
PARTITION q4_1999 VALUES LESS THAN ( TO_DATE('1-JAN-2000','DD-MON-YYYY'))
);