แก้ไข transaction ที่มีข้อผิดพลาด

BEGIN TRY  
	START TRAN;
		UPDATE accounts SET current_balance = current_balance - 100 WHERE account_id = 1;
		INSERT INTO transactions VALUES (1, -100, GETDATE());
        
		UPDATE accounts SET current_balance = current_balance + 100 WHERE account_id = 5;
		INSERT INTO transactions VALUES (5, 100, GETDATE());
	FINISH TRAN;
END TRY
BEGIN CATCH  
	UNDO TRAN;
END CATCH