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Joshua Jennings

Troubleshooting SQL Server Trigger Return Errors

Sometimes, your system may display an error indicating that the SQL Server trigger has failed to return. There can be several reasons for this problem.

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    What are triggertriggers in SQL?

    Triggers are nothing, although they are logically stored processes that can run automatically before an insert, update, or delete on a table, or after an insert, update, or delete. Updates or deletions often occur on a table.

    I am trying to create code that covers individual columns, month, and any year. From there I want to see if these numbers have already arrived or not. If they are successful, you make a fantastic mistake and stop investing. Otherwise, you want to go ahead and insert new information according to the table. I know I’m going to try, but I can’t get RAISERROR up and running. I’m sure this is due to the fact that I am completely different, and some are smallSome details have been overlooked.

    I am currently taking the last two months from variables and creating another variable to convert those two others to a better date / time format. Then I use the whole datediff function to try and check if you think this is how it happened. But unsuccessfully. I keep buying and adding this feature even though the card date is out of date.

    USE 

      AdventureWorks2012WALKCREATE Trigger BadCreditCardDateSales Software. Credit CardINSTEAD OF INSERTAS? OR WHATto beginDECLARE @ExpMonth tinyint,        @ExpYear smallint,        @ExpMonthYear date / timeCHOOSE @ExpMonth = ExpMonth,        @ExpYear = ExpYear,        @ExpMonthYear = @ExpYear + '-' + @ExpMonth + '-00'USED ​​BY    IF    DATEDIFF (MONTH, @ExpMonthYear, GETDATE ()) <0    TO BEGIN        RAISERROR ("The credit card you entered has expired status", 10.1)        RETURN OF THE TRANSACTION    ENDDIFFERENTto begin    INSERT credit card to (CardType, CardNumber, ExpMonth, ExpYear, ModifiedDate)    Select CardType, CardNumber, ExpMonth, ExpYear, ModifiedDate FROM insertedENDend     
    

     The purpose of this article is to provide a simple and easy-to-use mechanism for tracking errors in thein the text of triggers. This article is as good as it is for SQL Server compatibility. this year and 2014. 
    

    

  •  The first rule tells me that triggers are part of some type of invocation of a transaction (the transaction that starts them). And the fact is that when the trigger is launched, two values ​​towards @@ trancount and xact_state () are "1". If so, we use COMMIT or ROLLBACK in the trigger. Their values ​​change to "0" immediately after the execution of this type of instruction.
    • 

  •  The second weird rule is that, unfortunately, if a transaction ends with a new trigger, the database will throw a terrible abortion. An example of such leadership is when a COMMIT or ROLLBACK is executed with a trigger.
    • 


    

     In this solution, the lead is used by the second to fire the cancellation trigger and generate an error. The following code exchange demonstrates this mechanism: 
    

     This solution works until RAISERROR is the last trigger record. If we have an operator or two after RAISERROR,they work as shown in the following solution code: 
    

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     This is specific to SQL Server 2012in addition to the above versions. The THROW operator is currently improving error handling triggers. He cancels instructions and delivers fantastic news. The following code demonstrates this excellent mechanism: 
    

    

     As I explained in Previous article  According to the THROW statement, virtually every error handling activity in SQL Server over the next year or so was groundbreaking. This article proves it once again, confined to triggers. 
    

    

          - when getting pressure values ​​when entering a trigger  
    

              PRINT  '@@ trancount is ('  + @trancount +   ').'  ;  
    

    sql server trigger return error
    

              PRINT  'When the trigger is fired, the return price of XACT_STATE () is ('  + @XACT_STATE   '+). Run ' ;  
    

              Print  'after the COMMIT statement there is @@ trancount without question ('  + @trancount +   ').'  ;  
    

    sql server trigger return error
    

              PRINT  'After a COMMIT statement, the return value of XACT_STATE () is often ('  + @XACT_STATE +   ').'  ;  
    

     Issues raised by RAISERROR have traditionally worked like errors generated by database engine code. The values ​​specified by  RAISERROR  are specified by the system functions  ERROR_LINE, ERROR_MESSAGE, ERROR_NUMBER, ERROR_PROCEDURE, ERROR_SEVERITY, ERROR_STATE, then @@ ERROR . If  RAISERROR  is executed with a severity greater than 14 or in  TRY  -Clog, it transfers control to the affected  CATCH  block. An error is passed to the caller when  RAISERROR  is constantly being executed: 
    

     With a severity of 10, also called lower in the TRY block. 
    

     The database connection ends with a pleasant severity of 20 or higher. 
    

    

    

    Why do I get errors when retrying a SQL Server transaction?
    

    If a great error is returned, it "looks like" a SQL Server transaction that is being rolled back and rolled back. This poses a real problem because although this transaction will necessarily be redone, NO other specific call records are inserted into the web SQL table. I can only assume that some kind of telephone system will work.
    

    

     When you find yourself in the context of a trigger, any error discourages the batch and instantly rolls back some of the triggers Alky. 
    

     When it comes to error handling in SQL Server, no rule is valid. Errors you create yourself for  RAISERROR  do not break the disk even in the context of a trigger 
    

     There is another way to terminate the stack. This happens when  @@ trancount  is 0 on some outputs. The trigger is always executed as part of a low-cost transaction because although there is practically no transaction with multiple lazy statements, the  INSERT, UPDATE and DELETE  statement is an internal transaction in SQL Server and therefore the trigger is the part that is related with a transaction.Document 
    

    
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