@archita wrote: I need it only by data step.
This is similar to @andreas_lds's approach:
data _null_;
call execute('data have; length');
do until(last);
set sashelp.vcolumn end=last;
where libname='WORK' & memname='HAVE';
call execute(catx(' ',name,ifc(type='char','$42',put(length,1.))));
end;
call execute('; set have; run;');
stop;
run;
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