topic Macro '&&' could not be recognized? in SAS Programming

Macro '&&' could not be recognized?

ybz12003 — Tue, 08 Sep 2020 19:56:23 GMT

Hello,

I wrote a program to assign a new column 'Class' corresponding to different dataset names. I found out the class is shown in '&&Y&i.', and not the individual dataset name. I have Please let me know how to fix it. Thank you.

%let Y1=ulung;
%let Y2=uheme;
%let Y3=ucancer;
%let Y4=utransplant;
%let Y5=ugm;

%macro assign;
	%do i = 1 %to 5;
    data &&Y&i.. (keep=Underlying_Cond class);
		set &&Y&i.;
			Underlying_Cond=strip(Upcase(Underlying_Conditions));
			Class='&&Y&i..';
		run;
	
	%end;
%mend;
%assign;

Re: Macro '&&' could not be recognized?

PaigeMiller — Tue, 08 Sep 2020 19:58:32 GMT

Text that contains macro references should be enclosed in double-quotes, not single-quotes.

Re: Macro '&&' could not be recognized?

novinosrin — Tue, 08 Sep 2020 19:59:14 GMT

Perhaps you are missing double quotes?

Class="&Y&i..";

Re: Macro '&&' could not be recognized?

Tom — Tue, 08 Sep 2020 20:00:42 GMT

The reason the value is literally

&&Y&i..

is because that is that you asked it to do.

If you want string values to be evaluated by the macro processor use double quote characters instead of single quote characters.

Class="&&Y&i..";