Question on Macro Parameters

[RamKumar]

When I ran this macro code in EG 5.1,encountered by error as follows.SAS is installed in UNIX server and the /data/PPM is directory where SAS resides.

Ideally I want this code to run, when file is not availble on sever and if there are files it should produce a dataset as mentioned in macros.

16         %let appfile =<None>;

17 

18         %macro do_work(infilename);

19         %if "&infilename" ne "<NONE>" %then %do;

20        

21         proc import datafile="/data/PPM/&infilename." out=appfile_cass dbms=CSV replace;

22              guessingrows=30000;

23         run;

24        

25         data want;

26         set appfile_cass;

27         run;

28        

29         %end;

30         %mend;

31        

32         %do_work(&appfile);

MLOGIC(DO_WORK):  Beginning execution.

MLOGIC(DO_WORK):  Parameter INFILENAME has value <None>

MLOGIC(DO_WORK):  %IF condition "&infilename" ne "<NONE>" is TRUE

MPRINT(DO_WORK):   proc import datafile="/data/PPM/<None>" out=appfile_cass dbms=CSV replace;

MPRINT(DO_WORK):   ADLM;

MPRINT(DO_WORK):   guessingrows=30000;

MPRINT(DO_WORK):   run;

NOTE: Unable to open parameter catalog: SASUSER.PARMS.PARMS.SLIST in update mode. Temporary parameter values will be saved to

WORK.PARMS.PARMS.SLIST.

ERROR: Physical file does not exist, /data/PPM/<None>.

Can someone guide me to achieve this task?

Thanks for any help provided.

[Ksharp]

Check function FEXIST() .

[CTorres]

Check the case of the parameters:

94   %let appfile =<NONE>;
95   %put &appfile;
<NONE>
96   options mprint mlogic;

97    %macro do_work(infilename);
98     %if "&infilename" ne "<NONE>" %then %do;
99
100    proc import datafile="/data/PPM/&infilename." out=appfile_cass dbms=CSV replace;
101         guessingrows=30000;
102    run;
103
104    data want;
105    set appfile_cass;
106    run;
107
108    %end;
109    %mend;
110  %do_work(&appfile);
MLOGIC(DO_WORK):  Beginning execution.
MLOGIC(DO_WORK):  Parameter INFILENAME has value <NONE>
MLOGIC(DO_WORK):  %IF condition "&infilename" ne "<NONE>" is FALSE
MLOGIC(DO_WORK):  Ending execution.

[Tom]

The error message is that there is no file named '<None>'  in that directory.

You can use the %UPCASE() function to make your test for <NONE> case insensitive.

  %if %upcase("&infilename") ne "<NONE>" %then %do;