SAS--宏变量

系统宏变量

/*系统宏变量*/
/*不能在data步同一行创建宏变量*/
footnote "report on &sysdate ,&sysday , &sysdate9";  *must be double qutation mark;
data sasuser.talent99;
   set sasuser.talent;
   if year(lasthired)=1999;
   format birthdate lasthired date.;
run;
proc print data=sasuser.talent99;
run; 
footnote;           *把footnote内容清零;
run;

%let name=november;
%let number=11;
title1 "Actors Hired in &name";
footnote1 "Report Number &number";
data sasuser.newhire;
   set sasuser.talent99;
   if month(lasthired)=11;
   format lasthired date9.;
run;
proc print data=sasuser.newhire;
run;

options symbolgen; *是否将宏变量显示在日志，默认是nosymbolgen，即不显示;


        /*%let axd=end;
        &axd.date===endtime   
            data axd..time;=== data end.time;*/   /*宏变量加后缀时需要加一个period*/

%let number=11;    /*11也是character*/
%let name=November;
%let abbrev=nov;
%let year=99;
data &abbrev.hire;
   set sasuser.talent&year end=last;    /*end要放在set步*/
   if month(lasthired)=&number then
   do;
      Fee=rate*.10;
      TotFee+fee;
      output;
   end;
   if last then
        call symput('total',put(totfee,dollar6.)); /*call symput定义一个宏变量，赋值某变量值，且put一个format*/
run;                                                /*且这个变量名唯一，不能再创建*/
title1 "Actors Hired in &name";
title2 "Agency Commission &total";       /*title中引用call创建的宏变量，位置应放在call出现位置的后面*/
footnote1 "Report Number &number";
proc print data=&abbrev.hire;
run;