如何在SAS中将一列拆分为多行

data new_data;
   set old_data;
   array new_col{N} $ new_col1-new_colN; /* N为拆分后的行数 */
run;

data new_data;
   set old_data;
   array new_col{N} $ new_col1-new_colN;
   do i = 1 to N;
      new_col{i} = scan(old_col, i, ','); /* old_col为原始列的名称，','为分隔符 */
   end;
   drop old_col; /* 可选，删除原始列 */
run;

data new_data;
   set old_data;
   array new_col{N} $ new_col1-new_colN;
   do i = 1 to N;
      new_col{i} = scan(old_col, i, ',');
   end;
   drop old_col;
run;

proc print data=new_data;
run;