I have this long-running macro code to check for the existence of a local table but there are no statements after the THEN. What happens? What does SAS do? I'm just trying to understand the logic
/* make sure the local table exist */
%if %sysfunc(exist(cdm.&tablename)) %then;
%else %do;
%let man_month=%sysfunc(putn(%sysfunc(intnx(MONTH,%sysfunc(inputn(&sysdate9,date9.)),+1)),yymmn6.));
%return;
%end;
If this macro finds that the table exists, it does nothing. If it does not exists then it does the calculation in the %ELSE portion.
If this macro finds that the table exists, it does nothing. If it does not exists then it does the calculation in the %ELSE portion.
A more readable version would be to simply negate the condition :
%if not %sysfunc(exist(cdm.&tablename)) %then do;
%let man_month=....
%end;
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.