如你所愿了吧 O(∩_∩)O~

谢谢啊！！！！

Using the sum function can bypass an looping of array index. It is not only simpler, but also it runs faster as well. See the comparison at bottom.

There is no macro necessary in this context.

data t1;
  array abc[*] abc01ef abc02ef abc03ef abc04ef;
  do i=1 to 5;
      
     do j=1 to dim(abc);
             if i in (1,4,5) then abc[j]=ranuni(123);
                 else abc[j]=.;
         end;
         output;
  end;
  keep abc:;
run;

data t2;
  set t1;
  array abc[*] abc01ef abc02ef abc03ef abc04ef;
  missflag=(sum(of abc[*])=.);
run;

proc print;run;

******************************
251  data t1;
252    array abc[*] abc01ef abc02ef abc03ef abc04ef;
253    do k=1 to 1e6;
254    do i=1 to 5;
255
256       do j=1 to dim(abc);
257           if i in (1,4,5) then abc[j]=ranuni(123);
258           else abc[j]=.;
259       end;
260       output;
261    end;
262    end;
263    keep abc:;
264  run;

NOTE: The data set WORK.T1 has 5000000 observations and 4 variables.
NOTE: DATA statement used (Total process time):
      real time           1.64 seconds
      cpu time            1.57 seconds


265
266  data t2;
267    set t1;
268    array abc[*] abc01ef abc02ef abc03ef abc04ef;
269    missflag=(sum(of abc[*])=.);
270  run;

NOTE: Missing values were generated as a result of performing an operation on missing values.
      Each place is given by: (Number of times) at (Line):(Column).
      2000000 at 269:13
NOTE: There were 5000000 observations read from the data set WORK.T1.
NOTE: The data set WORK.T2 has 5000000 observations and 5 variables.
NOTE: DATA statement used (Total process time):
      real time           1.57 seconds
      cpu time            1.35 seconds


271
272  data t2;
273
274    set t1;
275    array abc[*] abc01ef abc02ef abc03ef abc04ef;
276    s=1;
277    do i=1 to dim(abc);
278       s=s*missing(abc[i]);
279    end;
280    drop i;
281  run;

NOTE: There were 5000000 observations read from the data set WORK.T1.
NOTE: The data set WORK.T2 has 5000000 observations and 5 variables.
NOTE: DATA statement used (Total process time):
      real time           3.89 seconds
      cpu time            1.81 seconds