* Set up data for example;
proc sort data=sashelp.class out=ByAge;
  by Age;
run;
proc transpose data=ByAge out=HeightsByAge(drop=_name_) prefix=Height;
  by Age;
  var Height;
run;
proc print data=HeightsByAge;
  id Age;
  title1 "HeightsByAge data set";
run;
 data SecondSMALLEST;
  set HeightsByAge;
  SecondShortest=smallest(2,of height:);
run;
proc print data=SecondSMALLEST;
  id Age;
  title1 "Second Shortest found through SMALLEST function";
run;