This creates a table partitioned by lists, in this example on store id.
CREATE TABLE orders (
order_nr NUMBER(15),
user_id VARCHAR2(2),
order_value NUMBER(15),
store_id NUMBER(5)
)
PARTITION BY LIST(store_id) (
PARTITION p1 VALUES (1,2,3),
PARTITION p2 VALUES(4,5,6),
PARTITION p3 VALUES(7,8,9),
PARTITION p4 VALUES(10,11)
);