greenplum里每个分区里还有子分区的语法是什么

这里是oracle里的分区建表语句，放在greenplum数据库里语句应该怎么写，每个分区里还得分区

示例：

CREATE TABLE p3_sales (id int, year int, month int, day int, 
region text)
DISTRIBUTED BY (id)
PARTITION BY RANGE (year)
    SUBPARTITION BY RANGE (month)
       SUBPARTITION TEMPLATE (
        START (1) END (13) EVERY (1), 
        DEFAULT SUBPARTITION other_months )
           SUBPARTITION BY LIST (region)
             SUBPARTITION TEMPLATE (
               SUBPARTITION usa VALUES ('usa'),
               SUBPARTITION europe VALUES ('europe'),
               SUBPARTITION asia VALUES ('asia'),
               DEFAULT SUBPARTITION other_regions )
( START (2002) END (2012) EVERY (1), 
  DEFAULT PARTITION outlying_years );