Note
This view is available starting with V2.2.77.
Purpose
This view displays the subpartition name, table name, partition name, and storage attributes of the subpartitions of 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_OWNER | VARCHAR2(128) | NO | The owner of the table. |
| 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 within 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 | This field is NULL by default. |
| READ_ONLY | VARCHAR2(3) | NO | This field is NULL by default. |
| INMEMORY | VARCHAR2(8) | NO | This field is compatible with Oracle. The value is NULL and has no practical meaning. |
| INMEMORY_PRIORITY | VARCHAR2(8) | NO | This field is compatible with Oracle. The value is NULL and has no practical meaning. |
| INMEMORY_DISTRIBUTE | VARCHAR2(15) | NO | This field is compatible with Oracle. The value is NULL and has no practical meaning. |
| INMEMORY_COMPRESSION | VARCHAR2(17) | NO | This field is compatible with Oracle. The value is NULL and has no practical meaning. |
| INMEMORY_DUPLICATE | VARCHAR2(13) | NO | This field is compatible with Oracle. The value is NULL and has no practical meaning. |
| INMEMORY_SERVICE | VARCHAR2(12) | NO | This field is compatible with Oracle. The value is NULL and has no practical meaning. |
| INMEMORY_SERVICE_NAME | VARCHAR2(1000) | NO | This field is compatible with Oracle. The value is NULL and has no practical meaning. |
| CELLMEMORY | VARCHAR2(24) | NO | This field is compatible with Oracle. The value is NULL and has no practical meaning. |
| MEMOPTIMIZE_READ | VARCHAR2(8) | NO | This field is NULL by default. |
| MEMOPTIMIZE_WRITE | VARCHAR2(8) | NO | This field is NULL by default. |
Sample query
Query the subpartition information of the TBL2_F_RL table in the partitioned tables that the current user can access.
obclient [SYS]> SELECT TABLE_OWNER, TABLE_NAME, PARTITION_NAME, SUBPARTITION_NAME, HIGH_VALUE, HIGH_VALUE_LENGTH, PARTITION_POSITION, SUBPARTITION_POSITION
FROM SYS.ALL_TAB_SUBPARTITIONS
WHERE TABLE_NAME='TBL2_F_RL';
The query result is as follows:
+-------------+------------+----------------+-------------------+------------+-------------------+--------------------+-----------------------+
| TABLE_OWNER | TABLE_NAME | PARTITION_NAME | SUBPARTITION_NAME | HIGH_VALUE | HIGH_VALUE_LENGTH | PARTITION_POSITION | SUBPARTITION_POSITION |
+-------------+------------+----------------+-------------------+------------+-------------------+--------------------+-----------------------+
| SYS | TBL2_F_RL | P0 | SP0 | 1,3 | 3 | 1 | 1 |
| SYS | TBL2_F_RL | P0 | SP1 | 4,6 | 3 | 1 | 2 |
| SYS | TBL2_F_RL | P0 | SP2 | 7,9 | 3 | 1 | 3 |
| SYS | TBL2_F_RL | P1 | SP3 | 1,3 | 3 | 2 | 1 |
| SYS | TBL2_F_RL | P1 | SP4 | 4,6 | 3 | 2 | 2 |
| SYS | 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 all partitioned tables that the current user owns: USER_TAB_SUBPARTITIONS
Query the partition information of all partitioned tables that the current user can access: ALL_TAB_PARTITIONS