等等等啊，在线等，急

proc sort data = Highfretest ;
  by stkcd descending cp ;
run ;

data avgcp( drop = Tdate1 Ttime1 cp ) ;
  set Highfretest( rename = ( Tdate = Tdate1 Ttime = Ttime1 ) ) ;
  Tdate = mdy(put(substr(TDate1,5,2),2.),put(substr(TDate1,7,2),2.),put(substr(TDate1,1,4),4.)) ;
  Ttime = hms(put(substr(Ttime1,1,2),2.),put(substr(Ttime1,3,2),2.),put(substr(Ttime1,5,2),2.)) ;
  by stkcd ;
  if stkcd = '600766' ;
  if Ttime < '10:00:00't ;
  if Tdate = '01JUN05'd ;
  if first.stkcd then
    do ;
      mcp = cp ;
   output ;
end ;
run ;


:time:现实再一次的告诉我，只有实践才能出真知:time:

感谢各位，帮了大忙了，有不明白的再来请教