Note
This view is available starting with V2.2.77.
Purpose
This view displays the subpartition name, table name, partition, and storage attributes of each subpartition of a table owned by the current user.
Applicability
This view is available only in Oracle mode of OceanBase Database.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| TABLE_NAME | VARCHAR2(128) | NO | The name of the table. |
| PARTITION_NAME | VARCHAR2(128) | NO | The name of the partition. |
| SUBPARTITION_NAME | VARCHAR2(128) | NO | The name of the subpartition. |
| HIGH_VALUE | VARCHAR2(32767) | NO | The subpartition expression. |
| HIGH_VALUE_LENGTH | NUMBER | NO | The length of the subpartition expression. |
| PARTITION_POSITION | NUMBER | NO | The position of the partition. |
| SUBPARTITION_POSITION | NUMBER | NO | The position of the subpartition in the partition. |
| TABLESPACE_NAME | VARCHAR2(30) | NO | The name of the tablespace that contains the subpartition. |
| PCT_FREE | NUMBER | NO | This column is not supported. The default value is NULL. |
| PCT_USED | NUMBER | NO | This column is not supported. The default value is NULL. |
| INI_TRANS | NUMBER | NO | This column is not supported. The default value is NULL. |
| MAX_TRANS | NUMBER | NO | This column is not supported. The default value is NULL. |
| INITIAL_EXTENT | NUMBER | NO | This column is not supported. The default value is NULL. |
| NEXT_EXTENT | NUMBER | NO | This column is not supported. The default value is NULL. |
| MIN_EXTENT | NUMBER | NO | This column is not supported. The default value is NULL. |
| MAX_EXTENT | NUMBER | NO | This column is not supported. The default value is NULL. |
| MAX_SIZE | NUMBER | NO | This column is not supported. The default value is NULL. |
| PCT_INCREASE | NUMBER | NO | This column is not supported. The default value is NULL. |
| FREELISTS | NUMBER | NO | This column is not supported. The default value is NULL. |
| FREELIST_GROUPS | NUMBER | NO | This column is not supported. The default value is NULL. |
| LOGGING | VARCHAR2(3) | NO | This column is not supported. The default value is NULL. |
| COMPRESSION | VARCHAR2(8) | NO | Indicates whether the subpartition is compressed. |
| COMPRESS_FOR | VARCHAR2(30) | NO | The compression method. |
| NUM_ROWS | NUMBER | NO | This column is not supported. The default value is NULL. |
| BLOCKS | NUMBER | NO | This column is not supported. The default value is NULL. |
| EMPTY_BLOCKS | NUMBER | NO | This column is not supported. The default value is NULL. |
| AVG_SPACE | NUMBER | NO | This column is not supported. The default value is NULL. |
| CHAIN_CNT | NUMBER | NO | This column is not supported. The default value is NULL. |
| AVG_ROW_LEN | NUMBER | NO | This column is not supported. The default value is NULL. |
| SAMPLE_SIZE | NUMBER | NO | This column is not supported. The default value is NULL. |
| LAST_ANALYZED | DATE | NO | This column is not supported. The default value is NULL. |
| BUFFER_POOL | VARCHAR2(7) | NO | This column is not supported. The default value is NULL. |
| FLASH_CACHE | VARCHAR2(7) | NO | This column is not supported. The default value is NULL. |
| CELL_FLASH_CACHE | VARCHAR2(7) | NO | This column is not supported. The default value is NULL. |
| GLOBAL_STATS | VARCHAR2(3) | NO | This column is not supported. The default value is NULL. |
| USER_STATS | VARCHAR2(3) | NO | This column is not supported. The default value is NULL. |
| INTERVAL | VARCHAR2(3) | NO | This column is not supported. The default value is NO |
| SEGMENT_CREATED | VARCHAR2(3) | NO | This column is not supported. The default value is NULL. |
| INDEXING | VARCHAR2(3) | NO | The default value is NULL. |
| READ_ONLY | VARCHAR2(3) | NO | This column is NULL by default. |
| INMEMORY | VARCHAR2(8) | NO | This column is for compatibility with Oracle, and it can be null, which has no actual meaning. |
| INMEMORY_PRIORITY | VARCHAR2(8) | NO | This column is compatible with Oracle and indicates the in-memory priority. The value can be NULL, which means that no in-memory priority is specified. |
| INMEMORY_DISTRIBUTE | VARCHAR2(15) | NO | This field is compatible with that in Oracle. This field can be NULL, which means it has no value. |
| INMEMORY_COMPRESSION | VARCHAR2(17) | NO | This column is for Oracle compatibility, and its value is always NULL. |
| INMEMORY_DUPLICATE | VARCHAR2(13) | NO | Oracle compatibility field. The value is NULL and has no actual meaning. |
| INMEMORY_SERVICE | VARCHAR2(12) | NO | This column is compatible with the Oracle INMEMORY_SERVICE column and has a NULL value, which does not have practical meaning. |
| INMEMORY_SERVICE_NAME | VARCHAR2(1000) | NO | The value of this column is NULL. It is a compatible Oracle column. |
| CELLMEMORY | VARCHAR2(24) | NO | This column is compatible with the corresponding column in an Oracle database. NULL values are not meaningful. |
| MEMOPTIMIZE_READ | VARCHAR2(8) | NO | NULL by default |
| MEMOPTIMIZE_WRITE | VARCHAR2(8) | NO | This field is set to NULL by default. |
Sample query
Query the subpartition information of the partitioned table TBL2_F_RL in the current user's schema.
obclient [SYS]> SELECT TABLE_NAME, PARTITION_NAME, SUBPARTITION_NAME, HIGH_VALUE, HIGH_VALUE_LENGTH, PARTITION_POSITION, SUBPARTITION_POSITION
FROM SYS.USER_TAB_SUBPARTITIONS
WHERE TABLE_NAME='TBL2_F_RL';
The query result is as follows:
+------------+----------------+-------------------+------------+-------------------+--------------------+-----------------------+
| TABLE_NAME | PARTITION_NAME | SUBPARTITION_NAME | HIGH_VALUE | HIGH_VALUE_LENGTH | PARTITION_POSITION | SUBPARTITION_POSITION |
+------------+----------------+-------------------+------------+-------------------+--------------------+-----------------------+
| TBL2_F_RL | P0 | SP0 | 1,3 | 3 | 1 | 1 |
| TBL2_F_RL | P0 | SP1 | 4,6 | 3 | 1 | 2 |
| TBL2_F_RL | P0 | SP2 | 7,9 | 3 | 1 | 3 |
| TBL2_F_RL | P1 | SP3 | 1,3 | 3 | 2 | 1 |
| TBL2_F_RL | P1 | SP4 | 4,6 | 3 | 2 | 2 |
| TBL2_F_RL | P1 | SP5 | 7,9 | 3 | 2 | 3 |
+------------+----------------+-------------------+------------+-------------------+--------------------+-----------------------+
6 rows in set
References
View the subpartition information of all partitioned tables in the current tenant: DBA_TAB_SUBPARTITIONS
View the subpartition information of partitioned tables accessible to the current user: ALL_TAB_SUBPARTITIONS
View the partition information of partitioned tables owned by the current user: USER_TAB_PARTITIONS