应该不是难题,请各位帮忙

我用sql2000,delphi6.0 的ado执行update,update的对象应该在表中都有,但是如果update语句要操作的对象的主键CreateTime的值在数据库中并不存在,比如通过MyMeterReadingTask.CreateTime输入一个时间,肯定数据库中是没有的,但是delphi和sql并不报错,我该怎样统计最后真正update了多少条记录,失败了多少条,失败的数据是哪几条,有没有简单的方法.
        Sql.Add('update MeterReadingTask set OperatorNumber=:MyOperatorNumber,HHUOperatorNumber=:MyHHUOperatorNumber,'
            +'HHUNumber=:MyHHUNumber,TotalCount=:MyTotalCount,IsComplete=:MyIsComplete,CompleteTime=:MyCompleteTime,'
            +'CompleteCount=:MyCompleteCount,HandInputCount=:MyHandInputCount,FailCount=:MyFailCount'
            +' where CreateTime=:MyCreateTime');
      end;
      parameters.ParamByName('MyCreateTime').Value                 :=MyMeterReadingTask.CreateTime;
      parameters.ParamByName('MyOperatorNumber').Value             :=MyMeterReadingTask.OperatorNumber;
      parameters.ParamByName('MyHHUOperatorNumber').Value          :=MyMeterReadingTask.HHUOperatorNumber;
      parameters.ParamByName('MyHHUNumber').Value                  :=MyMeterReadingTask.HHUNumber;
      parameters.ParamByName('MyTotalCount').Value                 :=MyMeterReadingTask.TotalCount;
      parameters.ParamByName('MyIsComplete').Value                 :=MyMeterReadingTask.IsComplete;
      parameters.ParamByName('MyCompleteTime').Value               :=MyMeterReadingTask.CompleteTime;
      parameters.ParamByName('MyCompleteCount').Value              :=MyMeterReadingTask.CompleteCount;
      parameters.ParamByName('MyHandInputCount').Value             :=MyMeterReadingTask.HandInputCount;
      parameters.ParamByName('MyFailCount').Value                  :=MyMeterReadingTask.FailCount;
      execSql;