Sas MACRO

[himalayancat]

HI All,

i was not comfortable not having any value after "NE", am i understanding it correctly as per my log message in Below program??

i read some documentation , https://v8doc.sas.com/sashtml/macro/z0543542.htm

and also referred Carpenters's Guide to Macro, Still not clear .

I am not clear what "NE" is comparing against!!

%macro jack(vals);

%if  &vals.  ne %then %do;

%put "Note:Has some values, therefore logical expression resolves to 1, which is True";

%end;

%else %do;

%put "Note:Does not have any value, therefore logical expression 0, which is false";

%end;

%mend;

%jack(nothing);

%jack();

So, is it going to be true anything except Missing values for &vals.!!

Thank You,

HimalayanCat

[jvdl]

This article should help you out: http://support.sas.com/resources/papers/proceedings09/022-2009.pdf

[Jagadishkatam · Accepted solution]

Here NE blank space in the if condition indicates that if the macro parameter i.e., &vals is not blank then execute the condition to print in log the message 'Note:Has some values, therefore logical expression resolves to 1, which is True' else output to the log a message saying that 'Note does not have any value, therefore logical expression 0, which is false'

[Kurt_Bremser]

To be more comfortable, do this:

%if "&vals." ne "" %then %do;