SQL SERVER存储过程中使用事务与try catch

CREATE PROCEDURE YourProcedure    
AS
BEGIN
    SET NOCOUNT ON;

    BEGIN TRY---------------------开始捕捉异常
       BEIN TRAN------------------开始事务
        UPDATE A SET A.names = B.names FROM 表1 AS A INNER JOIN 表2 AS B ON A.id = B.id

        UPDATE A SET A.names = B.names FROM 表1 AS A INNER JOIN 表2 AS B ON A.TEST = B.TEST

    COMMIT TRAN -------提交事务
    END TRY-----------结束捕捉异常
    BEGIN CATCH------------有异常被捕获
        IF @@TRANCOUNT > 0---------------判断有没有事务
        BEGIN
            ROLLBACK TRAN----------回滚事务
        END 
        EXEC YourLogErrorProcedure-----------记录存储过程执行时的错误信息，自定义
    END CATCH--------结束异常处理
END

		

ALTER PROC usp_AccountTransaction  
  
    @AccountNum INT,  
  
    @Amount DECIMAL  
  
AS  
  
BEGIN  
  
    BEGIN TRY --Start the Try Block..  
  
        BEGIN TRANSACTION -- Start the transaction..  
  
            UPDATE MyChecking SET Amount = Amount - @Amount  
  
                WHERE AccountNum = @AccountNum  
  
            UPDATE MySavings SET Amount = Amount + @Amount  
  
                WHERE AccountNum = @AccountNum  
  
        COMMIT TRAN -- Transaction Success!  
  
    END TRY  
  
    BEGIN CATCH  
  
        IF @@TRANCOUNT > 0  
            BEGIN
            ROLLBACK TRAN --RollBack in case of Error  
            END 
            EXEC YourLogErrorProcedure-----------记录存储过程执行时的错误信息，自定义
    END CATCH  
END  
  
GO