/**********************************************************************
 * concatenate all SAS data sets in one directory
 * Peng Zeng (Auburn University) 
 * 11-30-2020 
 **********************************************************************/

libname mylib 'your_directory';

ods output datasets.members = _data_list; 
proc datasets library = mylib memtype = data details; 
run;

proc sql noprint; 
   select "mylib." || name into: name_list separated by ' '
   from _data_list; 
run;

data output;
   set &name_list; 
run;

/**********************************************************************
 * THE END
 **********************************************************************/