Series of dates, import

[Ronein]

Hello,

I want to import CSV files into SAS.

I wan to create a series of dates and import files with names of these dates.

Why Way B in this code is not working?

What is the way to solve it please?

In Way B there is only one CSV file that is imported   with date 20210511.

Why?

%macro import_one(YYYYMMDD);
%if %sysfunc(fileexist(/path/Revenue&YYYYMMDD.))
%then %do;
data t&YYYYMMDD.;
infile "/path/Revenue&YYYYMMDD."
dlm=';' dsd truncover firstobs=2;
input VAR1-VAR59;
run;
%end;
/*If doesnt exist then create empty data set*/
%else %do;
data t&YYYYMMDD.;
Format VAR1-VAR59 8.;
stop;
run;
%end;
%mend import_one;

/**Way A-Working well**/
Data datestbl;
input YYYYMMDD $;
call execute('%nrstr(%import_one('!!YYYYMMDD!!'))');
cards;
20210501
20210502
20210503
20210504
20210505
20210506
20210507
20210508
20210509
20210510
;
Run;

/**Way B-Not Working well**/
%let start_date=01MAY2021;
%let end_date=10MAY2021;
data datestbl(keep=YYYYMMDD);
date="&start_date"d;
YYYYMMDD=put(date,yymmddn8.);
do while (date<="&end_date"d);
    output;
    date=intnx('day', date, 1, 's');
	YYYYMMDD=put(date,yymmddn8.);
end;
format date date9.;
call execute('%nrstr(%import_one('!!YYYYMMDD!!'))');
run;
 

[Kurt_Bremser]

In B, you run the CALL EXECUTE once after the DO loop has finished, with the value that caused the loop to terminate.

[Ronein]

Do you mean that I need to write call execute within the loop?

 %let start_date=01MAY2021;

%let end_date=10MAY2021;

data datestbl(keep=YYYYMMDD);

date="&start_date"d;

YYYYMMDD=put(date,yymmddn8.);

do while (date<="&end_date"d);  

output;  

date=intnx('day', date, 1, 's');    

YYYYMMDD=put(date,yymmddn8.);

call execute('%nrstr(%import_one('!!YYYYMMDD!!'))');

end;

 run;

[Kurt_Bremser]

Maxim 4.

Try It.