DISABLE primary key constraint

Hello,
let me know whats meaning by this....
Here, it creates a primary key and disable it... So whats the purpose of doing this...
(defines and disables an integrity constraint)
Constraint is DISABLED. is it in VALIDATE state / NO-VALIDATE state)
CREATE TABLE emp (
empno NUMBER(5) PRIMARY KEY DISABLE, . . . ;
ALTER TABLE emp
ADD PRIMARY KEY (empno) DISABLE;
Thanks
Edited by: Zerandib on Nov 12, 2008 6:47 AM

Having just done this this morning, let me have a go at explaining one possible use for this feature:
I am bulk-loading some data into a table. I know that some of the rows in that data duplicates other rows, and that I need to clean out those duplicates.
The quickest way of detecting duplicates I know of is to attempt to switch on a primary or unique key constraint and have the duplicate records written out to an EXCEPTIONS table. Therefore, I create my loading table with a primary key constraint DISABLED, so that I can actually perform the data load which I know will violate the constraint. If I'd created it enabled, which is the default, the bulk load would never be able to insert anything into the table, after all. When the load is finished, I do this:
alter table bulk_load enable constraint bulk_load_pk exceptions into exceptions;...and then I can use other techniques to use the new contents of the EXCEPTIONS table to work out which rows from the BULK_LOAD table to delete to clear out the duplicates.
All constraints when first created are in the enabled validate state, unless you specify otherwise. If you miss out the validate/novalidate keyword, in other words, your constraint will be created as VALIDATE.
Hope that helps a little.

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    Please Mark This As Answer if it solved your issue
    Please Vote This As Helpful if it helps to solve your issue
    Visakh
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    The duplicate key value is (21b5edcc-6e2d-421f-ad08-5a9e275add8a, 0x, 0, 10724c04-dcbb-4f02-af40-e19a694d015c, a558cc06-6f8a-408d-a1f6-f4b712d68881, 4096, 1, 4e405c39-8677-4ba0-8901-2ca4fa273461, 0).  The statement has been terminated.      at
    System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)      at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)      at System.Data.SqlClient.TdsParser.Run(RunBehavior
    runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)      at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()      at System.Data.SqlClient.SqlDataReader.get_MetaData()
         at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)      at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior
    runBehavior, Boolean returnStream, Boolean async)      at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)      at
    System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)      at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)  
       at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior)      at Microsoft.SharePoint.Utilities.SqlSession.ExecuteReader(SqlCommand command, CommandBehavior behavior, SqlQueryData monitoringData, Boolean retryForDeadLock)
    at Microsoft.SharePoint.SPSqlClient.ExecuteQueryInternal(Boolean retryfordeadlock)    
     at Microsoft.SharePoint.SPSqlClient.ExecuteQuery(Boolean retryfordeadlock)    
     at Microsoft.SharePoint.Library.SPRequestInternalClass.AddOrUpdateItem(String bstrUrl, String bstrListName, Boolean bAdd, Boolean bSystemUpdate, Boolean bPreserveItemVersion, Boolean bPreserveItemUIVersion, Boolean bUpdateNoVersion, Int32&
    plID, String& pbstrGuid, Guid pbstrNewDocId, Boolean bHasNewDocId, String bstrVersion, Object& pvarAttachmentNames, Object& pvarAttachmentContents, Object& pvarProperties, Boolean bCheckOut, Boolean bCheckin, Boolean bMigration, Boolean bPublish,
    String bstrFileName, ISP2DSafeArrayWriter pListDataValidationCallback, ISP2DSafeArrayWriter pRestrictInsertCallback, ISP2DSafeArrayWriter pUniqueFieldCallback)    
     at Microsoft.SharePoint.Library.SPRequest.AddOrUpdateItem(String bstrUrl, String bstrListName, Boolean bAdd, Boolean bSystemUpdate, Boolean bPreserveItemVersion, Boolean bPreserveItemUIVersion, Boolean bUpdateNoVersion, Int32& plID,
    String& pbstrGuid, Guid pbstrNewDocId, Boolean bHasNewDocId, String bstrVersion, Object& pvarAttachmentNames, Object& pvarAttachmentContents, Object& pvarProperties, Boolean bCheckOut, Boolean bCheckin, Boolean bMigration, Boolean bPublish,
    String bstrFileName, ISP2DSafeArrayWriter pListDataValidationCallback, ISP2DSafeArrayWriter pRestrictInsertCallback, ISP2DSafeArrayWriter pUniqueFieldCallback)    
     at Microsoft.SharePoint.SPListItem.AddOrUpdateItem(Boolean bAdd, Boolean bSystem, Boolean bPreserveItemVersion, Boolean bNoVersion, Boolean bMigration, Boolean bPublish, Boolean bCheckOut, Boolean bCheckin, Guid newGuidOnAdd, Int32&
    ulID, Object& objAttachmentNames, Object& objAttachmentContents, Boolean suppressAfterEvents, String filename, Boolean bPreserveItemUIVersion)    
     at Microsoft.SharePoint.SPListItem.UpdateInternal(Boolean bSystem, Boolean bPreserveItemVersion, Guid newGuidOnAdd, Boolean bMigration, Boolean bPublish, Boolean bNoVersion, Boolean bCheckOut, Boolean bCheckin, Boolean suppressAfterEvents,
    String filename, Boolean bPreserveItemUIVersion)    
     at Microsoft.SharePoint.SPListItem.Update()    
     at BV.PEL.BL.Common.PublishProject(SPListItem sourceItem, Boolean isFromPublish, SPWeb web, SPSite systemSite, SPFieldUserValueCollection adminGroup, String strComments)    
     at BV.PEL.Portal.WebParts.OneBVProjectInformation.OneBVProjectInformationUserControl.buttonApprove_Click(Object sender, EventArgs e)    
     at System.Web.UI.WebControls.Button.OnClick(EventArgs e)    
     at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)    
     at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)    
     at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)    
     at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)    
     at System.Web.UI.Page.ProcessRequest()    
     at System.Web.UI.Page.ProcessRequest(HttpContext context)    
     at ASP.BLANKWEBPARTPAGE_ASPX_1653093133.ProcessRequest(HttpContext context)    
     at Microsoft.SharePoint.Publishing.TemplateRedirectionPage.ProcessRequest(HttpContext context)    
     at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()    
     at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)    
     at System.Web.HttpApplication.PipelineStepManager.ResumeSteps(Exception error)    
     at System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb)    
     at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)    
     at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)    
     at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)    
     at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)    
     at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)

  • [SQL Server]Violation of PRIMARY KEY constraint 'DeploymentSummary_PK'. Cannot insert duplicate key in object 'dbo.DeploymentSummary'. The duplicate key value is

    I have migrated my SCCm 2007 environment to SCCM 2012 SP1 CU4.
    I noticed in the System Status\Component Status\SMS_STATE_SYSTEM a lot of errors like the one below:
    Microsoft SQL Server reported SQL message 2627, severity 14: [23000][2627][Microsoft][SQL Server Native Client 11.0][SQL Server]Violation of PRIMARY KEY constraint 'DeploymentSummary_PK'. Cannot insert duplicate key in object 'dbo.DeploymentSummary'. The duplicate key value is (1, 0, S0220438, 0). : spUpdateClassi
    Please refer to your Configuration Manager documentation, SQL Server documentation, or the Microsoft Knowledge Base for further troubleshooting information.
    When looking up the deployment ID and recreate the Deployment the problem is solved. But I have 700 packages and don't want to manually do this action on all packages. I think it is related to the migration i did and something went wrong there :-(
    Besides it will retriggers the deployment to the clients which is also not preferred.
    Is there another way to solve this by e.e.g do something directly in the SQL database tables ?

    Hi,
    It is not supported by Microsoft that do something directly in SQL database.
    If you want to do that, you could make a call to CSS.
    Best Regards,
    Joyce
    We
    are trying to better understand customer views on social support experience, so your participation in this
    interview project would be greatly appreciated if you have time.
    Thanks for helping make community forums a great place.

  • SSIS - "Violation of PRIMARY KEY constraint. Cannot insert duplicate key in object ' tablename '. The duplicate key value is 1234 . Though there are no duplicate records.

    Hi,
    I am providing support to one of our clients, where we have jobs scheduled to load the data from the tables in the source database to the destination database via SSIS packages. The first time load is a full load where we truncate all the tables in the destination
    and load them from the source tables. But from the next day, we perform the incremental load from source to destination, i.e., only modified records fetched using changed tracking concept will be loaded to the destination. After full load, if we run the incremental
    load, the job is failing with the error on one of the packages "Violation of PRIMARY KEY constraint. Cannot insert duplicate key in object '<tablename>'. The duplicate key value is <1234>, even though there are no duplicate records. When we
    try debugging and running the failing package, it runs successfully. We are not able to figure out why the package fails and when we run the next day it runs successfully. Request you to help me in this regard.
    Thank you,
    Bala Murali Krishna Medipally.

    Hi,
    I am providing support to one of our clients, where we have jobs scheduled to load the data from the tables in the source database to the destination database via SSIS packages. The first time load is a full load where we truncate all the tables in the destination
    and load them from the source tables. But from the next day, we perform the incremental load from source to destination, i.e., only modified records fetched using changed tracking concept will be loaded to the destination. After full load, if we run the incremental
    load, the job is failing with the error on one of the packages "Violation of PRIMARY KEY constraint. Cannot insert duplicate key in object '<tablename>'. The duplicate key value is <1234>, even though there are no duplicate records. When we
    try debugging and running the failing package, it runs successfully. We are not able to figure out why the package fails and when we run the next day it runs successfully. Request you to help me in this regard.
    Thank you,
    Bala Murali Krishna Medipally.
    I suspect you are trying to insert modified records instead of updating.

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