如上:
在说一下,谢谢了!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

解决方案 »

  1.   

    with adoquery1 do
    begin
    close;
    sql.clear;
    sql.add('select sum(工资) from tablename where 日期 between :begintime and :endtime');
    parameters.parambyname('begintime').value := datetimepicker1.datetime;
    parameters.parambyname('endtime').value := datetimepicker2.datetime;
    open;
    end;
      

  2.   

    用fieldbyname().value取得那个值,不知道是不是你想要得
      

  3.   

    两日期两减
    s为string;s:=inttostr(Trunc(datetimepicker1.Date)-Trunc(datetimepicker2.Date)));
      

  4.   

    up,
    谢谢你,不过我说的不是样,,DateTimePicker1,或DateTimePicker2 是DELPHI的控件,我想取它们下拉时的日期 ,,,在取二者的日期差
    谢谢了!!!!!!!!!!!!!!!
      

  5.   

    to 回复人: sailer_shi(笨笨虫) ( ) 信誉:95 
    不行呀,,,DateTimePicker2。DATE可以可是,,,str:=DateTimePicker2。DATE就不可以了,
      

  6.   

    str:=formatdatetime('yyyy-mm-dd',datetimepicker2.date)
      

  7.   

    两日期两减
    s为string;s:=inttostr(Trunc(datetimepicker1.Date)-Trunc(datetimepicker2.Date)));