Question

因此，我们有一个在早晨SQL作业中使用的多个存储过程，并且按顺序调用过程。如果proc中的一个查询失败，我们会为每个查询捕获/记录错误，因此我们确切地知道哪个块失败了。但问题是，如果出现故障，其中一些进程很难重新开始，所以我想在每个存储过程中实现TRANSACTION。

目前的程序类似于：

CREATE PROCEDURE [dbo].[spStep01]
( 
    @Return_Message     Varchar(1024)   OUT     -- Error messages returned to the calling program
)
AS
BEGIN

SET NOCOUNT ON;

DECLARE @ErrorCode              int
DECLARE @ApplicationNumber      int             
DECLARE @TaskNumber             int             
DECLARE @TaskCompleted          smallint        
DECLARE @TaskFailed             smallint        
DECLARE @TaskRunning            smallint        
DECLARE @ErrorSeverity          smallint        
DECLARE @ErrorState             smallint        

SELECT @ErrorCode = @@ERROR
SELECT @ApplicationNumber   = 10                
SELECT @TaskNumber          = 1
SELECT @TaskCompleted       = 0
SELECT @TaskFailed          = -1
SELECT @TaskRunning         = 1
SELECT @ErrorSeverity       = 16
SELECT @ErrorState          = 1

/***************************************************************************
*  first insert
***************************************************************************/
    BEGIN TRY   
        INSERT INTO ...
    END TRY
    BEGIN CATCH
        SELECT @Return_Message = 'FAILED - first insert did not populate'
        EXEC dbo.spTrackTask '', @ApplicationNumber, @TaskNumber, @TaskFailed, @Return_Message      
        RAISERROR (@Return_Message, @ErrorSeverity, @ErrorState)
        RETURN 
    END CATCH

/***************************************************************************
*  second insert
***************************************************************************/
    BEGIN TRY   
        INSERT INTO ...
    END TRY
    BEGIN CATCH
        SELECT @Return_Message = 'FAILED -  second insert did not populate'
        EXEC dbo.spTrackTask '', @ApplicationNumber, @TaskNumber, @TaskFailed, @Return_Message      
        RAISERROR (@Return_Message, @ErrorSeverity, @ErrorState)
        RETURN 
    END CATCH


/***************************************************************************
* Procedure has completed successfully
***************************************************************************/
    SELECT @Return_Message = 'SUCCESS - Inserts were complete'
    EXEC dbo.spTrackTask '', @ApplicationNumber, @TaskNumber, @TaskCompleted, @Return_Message   


/*************************************
*  Get the Error Message for @@Error
*************************************/
    IF @ErrorCode <> 0
    BEGIN
        SELECT  @Return_Message = [Description]     -- Return the SQL Server error
          FROM  master.dbo.SYSMESSAGES
         WHERE  error = @ErrorCode
    END

/*************************************
*  Return from the Stored Procedure
*************************************/
    RETURN @ErrorCode                               -- =0 if success,  <>0 if failure

END

我想确定的是，如果我将所有TRY/CATCH块包装在TRANSACTION中，如果它将回滚所有内容，则会引发错误。我环顾了一下，发现了一个TRY/CATCH块examples，但我们在大多数存储过程中会有多个。我没有太多的交易经验，所以我不能100％确定如何在这种情况下正确实现它。

将它包装在TRANSACTION工作中吗？或者有更好的方法吗？

Answer 1

这个怎么样

BEGIN TRANSACTION tx
BEGIN TRY
  @CurrentStep = "First Insert"
  INSERT ...

  @CurrentStep = "Second Insert"
  INSERT ...Second

  IF @@TRANCOUNT > 0
  BEGIN --SUCCESS, nothing failed, now I can commit!!
    SELECT @Return_Message = 'SUCCESS - Inserts were complete'
    EXEC dbo.spTrackTask '', @ApplicationNumber, @TaskNumber, @TaskCompleted, @Return_Message   
    COMMIT TRANSACTION tx;    -- now everything is committed
  END
END TRY

BEGIN CATCH 
  IF @@TRANCOUNT > 0 --something failed
  BEGIN
    IF @CurrentStep = 'First Insert'
      SELECT @Return_Message = 'FAILED - first insert did not populate'
    ELSE IF @CurrentStep = 'Second Insert'
      SELECT @Return_Message = 'FAILED - second insert did not populate'

    EXEC dbo.spTrackTask '', @ApplicationNumber, @TaskNumber, @TaskFailed, @Return_Message      
    RAISERROR (@Return_Message, @ErrorSeverity, @ErrorState)

    ROLLBACK TRAN tx; -- everything is rolled back
  END
END CATCH

希望这对您有所帮助，请记住，事务中的所有内容都应该在一个地方提交或回滚，否则您最好不要进行多次交易。

SQL Server事务具有多个更新，插入

1 个答案: