I am trying to set a file reference according to how a macro variable is set. It appears as if SAS is ignoring my "if" blocks. Here is some code:
%LET DRIVE=M;
LIBNAME USEFILE "C:\";
data _null_;
if ("&DRIVE" = 'M') then do;
filename fileh 'this.txt';
end;
if ("&DRIVE" = 'S') then do;
filename fileh 'that.txt';
end;
data test; infile fileh;
input test;
run;
When I try to run this the SAS code tries to open "that.txt". Why?
I would guess that the lines are executed before the if statements are seen. Will it work correctly if you wrap it in a macro and then change your if statements to %if statements?
Use the FILENAME() function instead of the global filename statement.
Don't miss out on SAS Innovate - Register now for the FREE Livestream!
Can't make it to Vegas? No problem! Watch our general sessions LIVE or on-demand starting April 17th. Hear from SAS execs, best-selling author Adam Grant, Hot Ones host Sean Evans, top tech journalist Kara Swisher, AI expert Cassie Kozyrkov, and the mind-blowing dance crew iLuminate! Plus, get access to over 20 breakout sessions.
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.