sp_syspolicy_purge_history (Transact-SQL)
Applies to: 
SQL Server
Removes the policy evaluation history according to the history retention interval setting.
Transact-SQL syntax conventions
Syntax
sp_syspolicy_purge_history
[ ; ]
Arguments
This stored procedure has no parameters.
Return code values
0 (success) or 1 (failure).
Remarks
You must run sp_syspolicy_purge_history in the context of the msdb system database.
To view the history retention interval, you can use the following query:
SELECT current_value
FROM msdb.dbo.syspolicy_configuration
WHERE name = N'HistoryRetentionInDays';
GO
If the history retention interval is set to 0, policy evaluation history isn't removed.
Permissions
Requires membership in the PolicyAdministratorRole fixed database role.
Important
Possible elevation of credentials: Users in the PolicyAdministratorRole role can create server triggers and schedule policy executions that can affect the operation of the instance of the Database Engine. For example, users in the PolicyAdministratorRole role can create a policy that can prevent most objects from being created in the Database Engine. Because of this possible elevation of credentials, the PolicyAdministratorRole role should be granted only to users who are trusted with controlling the configuration of the Database Engine.
Examples
The following example removes the policy evaluation history.
EXEC msdb.dbo.sp_syspolicy_purge_history;
GO