I currently have a macro which moves my dataset from one branch to another. In each movement, the date is updated. However, I am having trouble with removing the old date autonomously before inputting the new date, any advice?
The code is:
%Macro Merge_Branch(Branch = , Filename = , Library = );
%Let Timestamp = %sysfunc(putn(%sysfunc(date()),yymmddn8.));
%if &Branch. = Latest_Commit %then %do;
Data LC._&Timestamp._&Filename.;
set &Library..&Filename.;
run;
%end;
%else %if &Branch. = Staging %then %do;
%Let Filename = _20180909_Financial_Input;
%Let Filename_temp = %scan(&Filename.,2,'_');
%Let Date_String = %scan(&Filename.,1,'_');
/* this is the section where I get stuck the dash is a subtraction i.e. I want to remove the date and just have the string*/
%Let Filename_Stg = &Filename_temp - &Date_String;
Data Stg._&Timestamp._&Filename_Stg.;
set LC.&Filename.;
run;
%end;
%mend;
Input data can be made like this
data LC._20180909_Financial_Input;
var var1;
datalines;
1
1
1
1
;
run;
%Macro Merge_Branch(Branch = Staging , Filename = Financial_Input, Library = LC );
/*Note, in this macro the library is not important because it will always move from LC to STG*/
is the - a typo
%Let Filename_Stg = &Filename_temp - &Date_String;
should it be
%Let Filename_Stg = &Filename_temp_&Date_String;
It's more like a subtraction so i'm trying to make the following happen
_20181009_Financial_Input - _20181009_ = Financial_Input
then in the next step I will create a dataset name where there will be the most recent date (in this case it is the most recent date but in future there will be discrepancies)
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