Note
This view is available starting with V4.0.0.
Purpose
This view displays information about all auto-increment columns in the current cluster. Only the sys tenant can view this view.
Columns
Column |
Type |
Nullable |
Description |
|---|---|---|---|
| CREATE_TIME | datetime(6) | YES | The time when the auto-increment column was created. |
| MODIFY_TIME | datetime(6) | YES | The time when the auto-increment column was last modified. |
| TENANT_ID | bigint(20) | NO | The tenant ID. |
| AUTO_INCREMENT_KEY | bigint(20) | NO | The key of the table that contains the auto-increment column. |
| COLUMN_ID | bigint(20) | NO | The column ID. |
| AUTO_INCREMENT_VALUE | bigint(20) unsigned | YES | The next available auto-increment value. |
| SYNC_VALUE | bigint(20) unsigned | NO | The value explicitly specified for the auto-increment column using the INSERT statement, which is greater than the current value of the auto-increment column. |
Sample query
Query all auto-increment columns in the cluster.
obclient [oceanbase]> SELECT * FROM oceanbase.CDB_OB_AUTO_INCREMENT;
The query result is as follows:
+----------------------------+----------------------------+-----------+--------------------+-----------+----------------------+------------+
| CREATE_TIME | MODIFY_TIME | TENANT_ID | AUTO_INCREMENT_KEY | COLUMN_ID | AUTO_INCREMENT_VALUE | SYNC_VALUE |
+----------------------------+----------------------------+-----------+--------------------+-----------+----------------------+------------+
| 2025-02-20 14:37:01.322987 | 2025-02-20 14:37:07.197611 | 1002 | 500006 | 16 | 1000001 | 0 |
| 2025-02-20 14:39:18.505040 | 2025-02-20 14:39:18.505040 | 1002 | 500008 | 16 | 1 | 0 |
+----------------------------+----------------------------+-----------+--------------------+-----------+----------------------+------------+
2 rows in set
References
For more information about auto-increment columns, see Define an auto-increment column.