Target3=(sum(1,M_201810)*sum(1,Target2))-1;
Target4=(sum(1,M_201809)*sum(1,Target3))-1;
Target5=(sum(1,M_201808)*sum(1,Target4))-1;
I have a code which calculates the Target1,Target2,Target3 etc...
this not dynamic
I have come so far on the dynamic code
%macro create(howmany);
%do i=1 %to &howmany;
%let j =&i-1 ;
DATA _NULL_;
%let today=%sysfunc(today());
%let somnow=%sysfunc(intnx(month,&today,-&i,b), yymmn6.);
%let somnow1=%sysfunc(intnx(month,&today,-&i,b), date9.);
run;
%put &somnow;
DATA PD32T_&i;
set PD32TRANS;
format Date_&i yymmn6.;
Date_&i = "&somnow1"d;
Target&i=(sum(1,M_&somnow)*sum(1,Target&j))-1;
if Target&i = 0 then delete;
run;
Proc sql;
create table Target_data_&i as
select t0.objectregnbr
,t1.Date&i as DATE
,t1.Target&i
from PD32TRANS as t0
left join PD32T_&i as t1
on t0.objectregnbr = t1.objectregnbr
;
Quit;
%end;
%mend create;
%create(12)
Need some help to complete the code. Maybe there are far better ways to do this without making 12 different files and aggregating them up... But principally looking for a way that calculates Target backwards in time
The previous target (j) need to be calculated I guess
This change is mandatory:
%let j = %eval(&i - 1);
Other changes are recommended, such as removing this line entirely:
DATA _NULL_;
%LET statements are never part of a DATA step.
First thing to do: create a version without any macro-statement. If you already have that code, post it, so we can help. It seems as if the target-varialbes can be calculated using a normal do-loop and arrays. But to suggest something usefull i need to see data you have and what you expect as result.
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