The DELETE_COLUMN_STATS procedure deletes column-level statistics.
Syntax
DBMS_STATS.DELETE_COLUMN_STATS (
ownname VARCHAR2,
tabname VARCHAR2,
colname VARCHAR2,
partname VARCHAR2 DEFAULT NULL,
cascade_parts BOOLEAN DEFAULT TRUE);
Parameters
| Parameter | Description |
|---|---|
| ownname | The username. If the username is set to NULL, the current logon username is used by default. |
| tabname | The name of the table to which the column belongs. |
| colname | The column name or the extension name. |
| partname | The name of the partition where the table for storing statistics resides. If the table is partitioned and partname is NULL, statistics are stored at the table level. |
| cascade_parts | Specifies whether to delete statistics at the partition level and the sub-partition level. Default value: TRUE. |
Exceptions
| Error code | Description |
|---|---|
| ORA-20000 | The object does not exist, or you do not have the required privileges. |
| ORA-20005 | Statistics on the object are locked. |
Usage notes
To call this procedure, you must be the owner of the table. If the object is in the sys tenant, you must be the owner of the table or have the SYSDBA privilege.
Examples
Delete all statistics on the col1 column in the tbl1 table of the testUser01 user.
obclient> CALL DBMS_STATS.DELETE_COLUMN_STATS('testUser01', 'tbl1', 'col1');
Query OK, 0 rows affected
