DBA_TAB_PARTITIONS

Updated on 2024-12-19 GMT+08:00

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DBA_TAB_PARTITIONS displays information about all partitions in the database.

Name	Type	Description
table_owner	character varying(64)	Owner of the table that contains the partition
schema	character varying(64)	Schema of the partitioned table
table_name	character varying(64)	Table name
partition_name	character varying(64)	Name of the partition
high_value	text	Upper boundary of a range partition or boundary value set of a list partition Reserved field for forward compatibility. The parameter pretty_high_value is added in version 8.1.3 to record the information.
pretty_high_value	text	Upper boundary of a range partition or boundary value set of a list partition The query result is the instant decompilation output of the partition boundary expression. The output of this column is more detailed than that of high_value. The output information can be collation and column data type.
tablespace_name	name	Name of the tablespace that contains the partition

Example

View the partition information of a partitioned table:

    
     
       
       CREATE TABLE web_returns_p1
(
    wr_returned_date_sk       integer,
    wr_returned_time_sk       integer,
    wr_item_sk                integer NOT NULL,
    wr_refunded_customer_sk   integer
)
WITH (orientation = column)
DISTRIBUTE BY HASH (wr_item_sk)
PARTITION BY RANGE (wr_returned_date_sk)
(
    PARTITION p2016 VALUES LESS THAN(20161231),
    PARTITION p2017 VALUES LESS THAN(20171231),
    PARTITION p2018 VALUES LESS THAN(20181231),
    PARTITION p2019 VALUES LESS THAN(20191231),
    PARTITION p2020 VALUES LESS THAN(maxvalue)
);

SELECT * FROM dba_tab_partitions WHERE table_name='web_returns_p1';
 table_owner | schema |   table_name   | partition_name | high_value | pretty_high_value |  tablespace_name
-------------+--------+----------------+----------------+------------+-------------------+--------------------
 dbadmin     | public | web_returns_p1 | p2016          | 20161231   | 20161231          | DEFAULT TABLESPACE
 dbadmin     | public | web_returns_p1 | p2017          | 20171231   | 20171231          | DEFAULT TABLESPACE
 dbadmin     | public | web_returns_p1 | p2018          | 20181231   | 20181231          | DEFAULT TABLESPACE
 dbadmin     | public | web_returns_p1 | p2019          | 20191231   | 20191231          | DEFAULT TABLESPACE
 dbadmin     | public | web_returns_p1 | p2020          | MAXVALUE   | MAXVALUE          | DEFAULT TABLESPACE
(5 rows)

      

    
   