Note
This view is available starting with V4.0.0.
Purpose
This view displays information about all index subpartitions in the database.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| INDEX_OWNER | varchar(128) | NO | The owner of the index. |
| INDEX_NAME | varchar(128) | NO | The name of the index. |
| TABLE_NAME | varchar(128) | NO | The name of the table to which the index belongs. |
| PARTITION_NAME | varchar(128) | NO | The name of the partition. |
| SUBPARTITION_NAME | varchar(128) | NO | The name of the subpartition. |
| HIGH_VALUE | mediumtext | NO | The expression that binds the value of the subpartition. |
| HIGH_VALUE_LENGTH | bigint(20) | NO | The length of the expression that binds the value of the subpartition. |
| PARTITION_POSITION | bigint(20) | NO | The position of the partition in the index. |
| SUBPARTITION_POSITION | bigint(20) | NO | The position of the subpartition in the partition. |
| STATUS | varchar(8) | NO | Indicates whether the index partition is available. |
| TABLESPACE_NAME | varchar(30) | NO | The name of the tablespace that contains the partition. |
| PCT_FREE | bigint(0) | NO | This column is not supported. The default value is NULL. |
| INI_TRANS | bigint(0) | NO | This column is not supported. The default value is NULL. |
| MAX_TRANS | bigint(0) | NO | This column is not supported. The default value is NULL. |
| INITIAL_EXTENT | bigint(0) | NO | This column is not supported. The default value is NULL. |
| NEXT_EXTENT | bigint(0) | NO | This column is not supported. The default value is NULL. |
| MIN_EXTENT | bigint(0) | NO | This column is not supported. The default value is NULL. |
| MAX_EXTENT | bigint(0) | NO | This column is not supported. The default value is NULL. |
| MAX_SIZE | bigint(0) | NO | This column is not supported. The default value is NULL. |
| PCT_INCREASE | bigint(0) | NO | This column is not supported. The default value is NULL. |
| FREELISTS | bigint(0) | NO | This column is not supported. The default value is NULL. |
| FREELIST_GROUPS | bigint(0) | NO | This column is not supported. The default value is NULL. |
| LOGGING | varchar(3) | NO | This column is not supported. The default value is NULL. |
| COMPRESSION | varchar(13) | NO | Indicates whether the partition index is compressed:
|
| BLEVEL | bigint(0) | NO | This column is not supported. The default value is NULL. |
| LEAF_BLOCKS | bigint(0) | NO | This column is not supported. The default value is NULL. |
| DISTINCT_KEYS | bigint(0) | NO | This column is not supported. The default value is NULL. |
| AVG_LEAF_BLOCKS_PER_KEY | bigint(0) | NO | This column is not supported. The default value is NULL. |
| AVG_DATA_BLOCKS_PER_KEY | bigint(0) | NO | This column is not supported. The default value is NULL. |
| CLUSTERING_FACTOR | bigint(0) | NO | This column is not supported. The default value is NULL. |
| NUM_ROWS | bigint(0) | NO | This column is not supported. The default value is NULL. |
| SAMPLE_SIZE | bigint(0) | 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 | varchar(7) | NO | This column is not supported. The default value is NULL. |
| FLASH_CACHE | varchar(7) | NO | This column is not supported. The default value is NULL. |
| CELL_FLASH_CACHE | varchar(7) | NO | This column is not supported. The default value is NULL. |
| USER_STATS | varchar(3) | NO | This column is not supported. The default value is NULL. |
| GLOBAL_STATS | varchar(3) | NO | This column is not supported. The default value is NULL. |
| INTERVAL | varchar(3) | NO | This column is not supported. The default value is NO. |
| SEGMENT_CREATED | varchar(3) | NO | This column is not supported. The default value is NULL. |
| DOMIDX_OPSTATUS | varchar(6) | NO | This column is not supported. The default value is NULL. |
| PARAMETERS | text | NO | This column is not supported. The default value is NULL. |
Sample query
In the sys tenant, query the subpartitions (secondary partitions) of the tbl2_f_rl index table in the current tenant.
obclient [infotest]> SELECT INDEX_OWNER, INDEX_NAME, PARTITION_NAME, SUBPARTITION_NAME, HIGH_VALUE, HIGH_VALUE_LENGTH, PARTITION_POSITION, SUBPARTITION_POSITION FROM oceanbase.DBA_IND_SUBPARTITIONS;
The query result is as follows:
+--------+-------------+----------------+----------------+-------------------+------------+-------------------+--------------------+-----------------------+
| CON_ID | INDEX_OWNER | INDEX_NAME | PARTITION_NAME | SUBPARTITION_NAME | HIGH_VALUE | HIGH_VALUE_LENGTH | PARTITION_POSITION | SUBPARTITION_POSITION |
+--------+-------------+----------------+----------------+-------------------+------------+-------------------+--------------------+-----------------------+
| 1002 | infotest | tbl2_f_rl_idx1 | p0 | sp0 | 1,3 | 3 | 1 | 1 |
| 1002 | infotest | tbl2_f_rl_idx1 | p0 | sp1 | 4,6 | 3 | 1 | 2 |
| 1002 | infotest | tbl2_f_rl_idx1 | p0 | sp2 | 7,9 | 3 | 1 | 3 |
| 1002 | infotest | tbl2_f_rl_idx1 | p1 | sp3 | 1,3 | 3 | 2 | 1 |
| 1002 | infotest | tbl2_f_rl_idx1 | p1 | sp4 | 4,6 | 3 | 2 | 2 |
| 1002 | infotest | tbl2_f_rl_idx1 | p1 | sp5 | 7,9 | 3 | 2 | 3 |
+--------+-------------+----------------+----------------+-------------------+------------+-------------------+--------------------+-----------------------+
6 rows in set