topic Re: macro not resolving in loop in SAS Programming

macro not resolving in loop

sathya66 — Thu, 29 Mar 2018 12:56:47 GMT

Hi All,

it has to create

sashelp

dd data sets but macro is not resolving.

Thanks,

data test;
infile cards;
input a$;
cards;
sashelp
aa
dd
ss
dd
;
run;

proc sql noprint;
	select count(*) into :numb
	from test;
	;
quit;
%macro a;
%do i=1 %to &numb.;
	data _null_;
	set test (firstobs=&i obs=&i);
	call symput("a&&i",trim(left(a)));
	run;
	data work.&a&i._01;
	  set sashelp.class;
	  run;
	  %end;
%mend;

%a;

Re: macro not resolving in loop

Astounding — Thu, 29 Mar 2018 13:09:49 GMT

This line is wrong:

data work.&a&i._01;

It should be:

data work.&&a&i.._01;

This piece won't cause an error, but is mildly misleading:

call symput("a&&i", trim(left(a)));

It should become:

call symputx("a&i", a);

Only one ampersand is needed, and switching to SYMPUTX removes all leading and trailing blanks.

Re: macro not resolving in loop

PaigeMiller — Thu, 29 Mar 2018 13:11:09 GMT

You have too many & in your code.

Replace the lines you typed with these

call symputx("a&i",a);

and

data work.a&i._01;

Hint: debugging these things is much easier if your code begins with

options mprint;