Note
This view is available starting with V2.2.77.
Purpose
This view displays the subpartition names, table names, partition names, and storage attributes of subpartitions for all tables accessible to the current user.
Applicability
This view is available only in Oracle-compatible 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 | Currently, this column is set to NULL. |
| INMEMORY | VARCHAR2(8) | NO | This is an Oracle-compatibility column, which has the NULL value and no practical significance. |
| INMEMORY_PRIORITY | VARCHAR2(8) | NO | This is an Oracle-compatibility column, which has the NULL value and no practical significance. |
| INMEMORY_DISTRIBUTE | VARCHAR2(15) | NO | This is an Oracle-compatibility column, which has the NULL value and no practical significance. |
| INMEMORY_COMPRESSION | VARCHAR2(17) | NO | This is an Oracle-compatibility column, which has the NULL value and no practical significance. |
| INMEMORY_DUPLICATE | VARCHAR2(13) | NO | This is an Oracle-compatibility column, which has the NULL value and no practical significance. |
| INMEMORY_SERVICE | VARCHAR2(12) | NO | This is an Oracle-compatibility column, which has the NULL value and no practical significance. |
| INMEMORY_SERVICE_NAME | VARCHAR2(1000) | NO | This is an Oracle-compatibility column, which has the NULL value and no practical significance. |
| CELLMEMORY | VARCHAR2(24) | NO | This is an Oracle-compatibility column, which has the NULL value and no practical significance. |
| MEMOPTIMIZE_READ | VARCHAR2(8) | NO | Currently, this column is set to NULL. |
| MEMOPTIMIZE_WRITE | VARCHAR2(8) | NO | Currently, this column is set to NULL. |
Sample query
Query the subpartition information of the TBL2_F_RL table in the partitioned tables owned by the current user.
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
Query the subpartition information of all partitioned tables in the current tenant: DBA_TAB_SUBPARTITIONS
Query the subpartition information of partitioned tables accessible to the current user: ALL_TAB_SUBPARTITIONS
Query the partition information of partitioned tables owned by the current user: USER_TAB_PARTITIONS