Hello mentors,
I'm in a situation where I need to check the existence of a file in sas grid. The filename however has a date, which can be any date of the month, so there is no way to predict the full file name. For eg. in january, filename could be 'file_jan20_02jan20.sas7bdat', but in feb it could be 'file_feb20_08feb20.sas7bdat'. so there is absolutely no way to predict the right filename and look for it.
I usually use the following code to check the existence of the file, and I searched around but couldn't find a way to look for partial names such that if file: file_%SYSFUNC(TODAY(),monyy7.)_*.sas7bdat. Trying to do something along these lines using a wildcard.
data _null_;
rc=fileexist("/users/abc/filename.sas7bdat");
if rc > 0 then call symput ('flag',"Y");
else call symput ('flag',"N");
run;
%put &=flag;
Appreciate your guidance so very much!
Do you have already a libref to "/users/abc" ?
Suppose you don't have then:
libname mydata "/users/abc";
%let flag = "N";
data _null_;
set sashelp.table;
if libnmae = 'MYDATA' and
lowcase(substr,memname,1,7) = 'file_jan' /* or feb or ... */
then do;
if memname = "<full data set name>" /* omit .sas7bdat */
then call symput('flag', "Y");
end;
run;
Do you have already a libref to "/users/abc" ?
Suppose you don't have then:
libname mydata "/users/abc";
%let flag = "N";
data _null_;
set sashelp.table;
if libnmae = 'MYDATA' and
lowcase(substr,memname,1,7) = 'file_jan' /* or feb or ... */
then do;
if memname = "<full data set name>" /* omit .sas7bdat */
then call symput('flag', "Y");
end;
run;
That totally makes sense, thank you for the direction!
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