missing values in a library

BrahmanandaRao — Thu, 05 May 2022 05:43:14 GMT

Hi guys

we can find missing values by using nmiss and cmiss functions in a dataset so how to find

missing values in all datasets and count in a library i think dictionary.tables can does

Re: missing values in a library

andreas_lds — Thu, 05 May 2022 06:40:21 GMT

You will have to process each dataset using the cmiss (no need for nmiss, cmiss works with both types).

options dlcreatedir;

/* create some test data */
libname test "INSERT_A_DIR_NAME_HERE\test"; 

data test.class test.beta;
   set sashelp.class;

   if mod(_n_, 3) = 0 then Age = .;
   if mod(_n_, 7) = 0 then Weight = .;

   output test.class;

   if mod(_n_, 5) = 0 then Height = .;
   output test.beta;
run;


/* define the datasets holding the results */
data work.CountMiss;
   length Dataset $ 42 NumMissing 8;
   call missing(of _all_);
   stop;
run;

/* the macro will be called by the next data step */
%macro CountMissings(Dataset=);
   data _null_;
      set &Dataset. end=jobDone;

      NumMissing + cmiss(of _all_);

      if jobDone then do;
         call execute(catx(' ', 'proc sql noprint; insert into work.CountMiss'
            , 'set Dataset = "&Dataset.", NumMissing =', NumMissing, ';quit;'));
      end;
   run;
%mend;


/* call the macro for each dataset in the library test */
data _null_;
   set sashelp.vtable(keep= LibName MemName);
   where LibName = 'TEST';

   length Dataset $ 42;

   Dataset = cats(Libname, '.', MemName);

   call execute('%nrstr(%CountMissings(Dataset=' !! Dataset !! '))');
run;


/* print the results */
proc print data=work.CountMiss;
run;

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missing values in a library

Re: missing values in a library