topic Re: Need ampersand to act as the actual value and SAS not think it is a macro in SAS Programming

Need ampersand to act as the actual value and SAS not think it is a macro

HN2001 — Tue, 08 Aug 2023 18:00:03 GMT

Hi,

I'm putting together some code to check valid values. If it isn't in the valid values, it would be put into the dataset, tmp.

However, one of the valid values contains an ampersand. How do I trick SAS so it doesn't think it is a macro.

I have simplified the code I actually wrote to the part I'm having issues with

data Test_Data;

input Person $ Color $20.;

datalines;

Person1 Black&White

Person2 Purple

Person3 Black&White

Person4 Blue

Person5 Red

;

run;

%macro colorchk(var1,var2);

data tmp (keep=Person Color);

set Test_Data;

if &var1. ^in (&var2.);

run;

%mend colorchk;

%colorchk(Color,"Black&White" "Purple" "Blue" "Red");

When you run this, you get this in the log:
WARNING: Apparent symbolic reference WHITE not resolved.
WARNING: Apparent symbolic reference WHITE not resolved.

Is there a way to code so this warning doesn't happen??

Re: Need ampersand to act as the actual value and SAS not think it is a macro

Tom — Tue, 08 Aug 2023 18:04:46 GMT

Just use single quotes around the value instead of double quotes and the macro processor will ignore the content of the string.

%colorchk(Color,'Black&White' "Purple" "Blue" "Red");

Re: Need ampersand to act as the actual value and SAS not think it is a macro

HN2001 — Tue, 08 Aug 2023 18:43:55 GMT

Thanks Tom!

That does seem to work. A similar question, I also have a pdf with frequencies being produced. in this pdf, I was also outputting the valid values from the macro statement.

However, the warnings also appear for that too.

This is the code I have:

ods pdf text="^{style [font_face=arial font_weight=Bold font_size=14pt color=blue just=center] &var1.}";
proc freq data=Test_Data;
table Group*&var1./list missing;
run;
ods pdf text="^{style [font_face=arial font_size=12pt color=blue just=center] &var1. has no out of range observations}";
ods pdf text="^{style [font_face=arial font_size=12pt color=blue just=center] Possible values: %bquote(&var2.)}";

The last line is what also gives the warning:

WARNING: Apparent symbolic reference WHITE not resolved.
WARNING: Apparent symbolic reference WHITE not resolved.

Re: Need ampersand to act as the actual value and SAS not think it is a macro

Tom — Tue, 08 Aug 2023 19:12:37 GMT

If you don't want the & evaluated then don't use %BQUOTE(). That is one of the main reason TO use %BQUOTE() is to quote values that are enclosed in single quotes.

You might use %SUPERQ() instead to add macro quoting. Pass just the NAME of the macro variable whose value you want quoted.

ods pdf text="^{style [font_face=arial font_size=12pt color=blue just=center] Possible values: %superq(var2)}";

Re: Need ampersand to act as the actual value and SAS not think it is a macro

HN2001 — Wed, 09 Aug 2023 13:45:05 GMT

Tom - Thank you so much for your help! It cleaned up the log and still gave me the output I was looking for! Thanks again