data a1;                                                                                                                               
set a;                                                                                                                                 
xy=trim(x)||left(trim(y));                                                                                                             
run;                                                                                                                                   
                                                                                                                                       
proc print;                                                                                                                            
run;                                                                                                                                   
    

再转为数值型

谢谢各位!!!!