Oracle® Database SQL Reference 10g Release 2 (10.2) Part Number B14200-02 |
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Purpose
Use the DISASSOCIATE
STATISTICS
statement to disassociate default statistics or a statistics type from columns, standalone functions, packages, types, domain indexes, or indextypes.
See Also:
ASSOCIATE STATISTICS for more information on statistics type associationsPrerequisites
To issue this statement, you must have the appropriate privileges to alter the underlying table, function, package, type, domain index, or indextype.
Syntax
disassociate_statistics::=
Semantics
FROM COLUMNS | FUNCTIONS | PACKAGES | TYPES | INDEXES | INDEXTYPES
Specify one or more columns, standalone functions, packages, types, domain indexes, or indextypes from which you are disassociating statistics.
If you do not specify schema
, then Oracle Database assumes the object is in your own schema.
If you have collected user-defined statistics on the object, then the statement fails unless you specify FORCE
.
Specify FORCE
to remove the association regardless of whether any statistics exist for the object using the statistics type. If statistics do exist, then the statistics are deleted before the association is deleted.
Note:
When you drop an object with which a statistics type has been associated, Oracle Database automatically disassociates the statistics type with theFORCE
option and drops all statistics that have been collected with the statistics type.Example
Disassociating Statistics: Example This statement disassociates statistics from the emp_mgmt
package in the hr
schema (created in "Creating a Package: Example"):
DISASSOCIATE STATISTICS FROM PACKAGES hr.emp_mgmt;