Quiz

proc sql noprint;

    select avg(Days)
    into:NumDays
    from certadv.all;

quit;


%put &=NumDays;

  
proc sql noprint;  
    select avg(Days)
    into NumDays
    from certadv.all;
  quit;  

%put &=NumDays;
  

proc sql noprint;

    select avg(Days) as NumDays
    from certadv.all;

quit;

%put &=NumDays;

proc sql noprint;

    select Days
    into avg(Days) as NumDays
    from certadv.all;

quit;


%put &=NumDays;

Happy learning!