start transaction; select balance from bank where name="zhangsan"; // 生成 重做日志 balance=600 update bank set balance = balance - 400; // 生成 重做日志 amount=400 update finance set amount = amount 400; commit;
start transaction; select balance from bank where name="zhangsan"; // 生成 重做日志 balance=600 update bank set balance = balance - 400; // 生成 重做日志 amount=400 update finance set amount = amount 400; commit;