Question

    data _null_;
    set hash.bankholidays;

        retain total 0; 
        format date :date9.;

        set hash.oyster;
            datetime = datepart(datetime);
            format datetime :date9. ;

            if date eq datetime then do;
            total = total + amount; end;


    put "total =" total; 

    run;    

This gives me a popup dialog box in eclipse:
Multiple SET/MERGE statements in a data step

I’m wondering what’s going on here? It seems to be saying that you can’t have a set statement within a set statement, but I’m sure I’ve done it before.

eg.

    data data_ex.giftwrap_ribbon_final; 
    set data_ex.giftwrap_w_ribbon_fl; 
        if not missing (first) and not missing (last) then do;
            do i = first to last;
            set data_ex.ribbon (keep=ribbon_colour) point = i;
            output;
            end;
        end; 

        else do;
        ribbon_colour = ''; 
        output; 
        end;
    run;

could I get some clarification here?

Also, about that last put. How do I tell it to execute the put after the set statement has finished?

Answer 1

You need to wrap the set statment in a do loop and use pointers.

data _null_;
set hash.bankholidays;

    retain total 0; 
    format date :date9.;

    do i = 1 to nobs; 
        set hash.oyster point = i nobs = nobs; 
            datetime = datepart(datetime);
            format datetime :date9. ;

            if date eq datetime then do;
            total = total + amount; end;
    end;

put "total =" total; 

run;