I want to repeat each country's obs. for 31 times and the following statements run well.
%let country1=abudhabi;
%let country2=argentina;
%macro x;
data %do i =1 %to 31;
work.&country1&i
%end;;
set &country1;
run;
data %do i =1 %to 31;
work.&country2&i
%end;;
set &country2;
run;
%mend x;
%x;
But because I have tens of countries, I also want to apply the do loop on "countryj". The commands I want is something like the commands below but it failed. Can anyone give me some advice? Thanks.
%let country1=abudhabi;
%let country2=argentina;
%macro x;
%do j = 1 %to 2;
data %do i =1 %to 31;
work.&&country&j&i
%end;;
set &&country&j;
run;
%end;
%mend x;
%x;
Examine how the extra ampersand plays out.
&&country&i&j
The fist time through the loops, this becomes
&country11
And there is no such macro variable. You would need to take advantage of using a dot to end a macro variable name, changing this to:
&&country&i..&j
On a secondary note, it might be easier to read the names if you change them slightly:
&&country&i.._&j
Good luck.
Examine how the extra ampersand plays out.
&&country&i&j
The fist time through the loops, this becomes
&country11
And there is no such macro variable. You would need to take advantage of using a dot to end a macro variable name, changing this to:
&&country&i..&j
On a secondary note, it might be easier to read the names if you change them slightly:
&&country&i.._&j
Good luck.
Looks like you all set, but here is another solution:
/* If you already have a data set with all the country names then you don't need this data step */
/* Just use your countries data set in the proc sql step. */
/* Otherwise, create a data set with all of your countries */
data countries;
country='argentina';output;
country='abudhabi';output;
run;
proc sql noprint;
select count(*)
into :countries
from countries
;
quit;
%macro x;
%do i=1 %to &countries.;
proc sql noprint;
select country
into :country
from countries (firstobs=&i. obs=&i.)
;
quit;
%let country=%trim(%left(&country.));
/* You probably won't need this data step, I did just to make the code work */
data &country.;
country="&country.";
run;
data
%do j=1 %to 31;
work.&country.&j.
%end;
;
set &country.;
run;
%end;
%mend x;
%x;
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