分区表中实际保存数据的表，对应的entry通常保存在pg_partition中，各个子分区的parentid作为外键关联其分区母表在pg_class表中的oid列。

示例1：t1_hash为一个分区表：

gaussdb=# CREATE TABLE t1_hash (c1 INT, c2 INT, c3 INT)PARTITION BY HASH(c1)(    PARTITION p0,    PARTITION p1,    PARTITION p2,    PARTITION p3,    PARTITION p4,    PARTITION p5,    PARTITION p6,    PARTITION p7,    PARTITION p8,    PARTITION p9);--查询t1_hash分区类型gaussdb=# SELECT oid, relname, parttype FROM pg_class WHERE relname = 't1_hash';oid  | relname | parttype-------+---------+----------16685 | t1_hash | p      (1 row)--查询t1_hash的分区信息gaussdb=# SELECT oid, relname, parttype, parentid FROM pg_partition WHERE parentid = 16685;oid  | relname | parttype | parentid-------+---------+----------+----------16688 | t1_hash | r        |    1668516689 | p0      | p        |    1668516690 | p1      | p        |    1668516691 | p2      | p        |    1668516692 | p3      | p        |    1668516693 | p4      | p        |    1668516694 | p5      | p        |    1668516695 | p6      | p        |    1668516696 | p7      | p        |    1668516697 | p8      | p        |    1668516698 | p9      | p        |    16685(11 rows)--删除t1_hashgaussdb=# DROP TABLE t1_hash;