Purpose
The V$SQL_JOIN_FILTER view displays the real-time execution information about join filters.
Note
This view is introduced since OceanBase Database V4.2.0.
Columns
Column |
Type |
Nullable? |
Description |
|---|---|---|---|
| SVR_IP | VARCHAR2(46) | NO | The IP address of the OBServer node. |
| SVR_PORT | NUMBER(38) | NO | The port number of the OBServer node. |
| QC_SESSION_ID | NUMBER | NO | The query coordinator (QC) session ID of the given cursor for a parallel query. |
| QC_INSTANCE_ID | NUMBER | NO | The QC instance ID of the given cursor for the parallel query. |
| SQL_PLAN_HASH_VALUE | NUMBER | NO | The hash value of the SQL plan of the cursor for the given parallel query. |
| FILTER_ID | NUMBER | NO | The ID of the connection filter in the given cursor. This ID corresponds to the filter ID in the execution plan. |
| BITS_SET | NUMBER | NO | The size of the bitmap for the Bloom filter. In the current version of OceanBase Database, this column is used only for compatibility. |
| FILTERED | NUMBER | NO | The number of rows processed by the connection filter. |
| PROBED | NUMBER | NO | The number of rows in the right-side table that have been tested by using the bitmap filter. Here, the value is the sum of filtered and unfiltered rows. |
| ACTIVE | NUMBER | NO | Indicates whether the filter is active. |
| CON_ID | NUMBER | NO | The ID of the data container. |
| TRACE_ID | CHAR(64) | NO | The trace ID of the SQL statement. |