下面程序中,如何让startDate和stopDate变成数字,以便循环?谢谢了!
%macro Main;
%let startDate='15Jul2000'd;
%let stopDate='19Jul2000'd;
%let numOfDays=120;
%do date=?startDate %to ?stopDate;
proc sql;
create table nb.date_line as
select *
from nb.raw_date_line
where "&date"d-&numOfDays<date<="&date"d;
quit;
%end;
%mend;
%Main