Hoja de preparación de datos

data casuser.contacts; infile datalines delimiter=','; length F_NAME $20 L_NAME $20 ADDRESS $50 CITY $20; input F_NAME $ L_NAME $ ADDRESS $ CITY $; datalines; JOHN,SMITH,123 MAIN ST,ANYTOWN JON,SMYTHE,123 MAIN STREET,ANYTOWN JANE,DOE,456 OAK AVE,OTHERVILLE JOHN,SMITH,456 OAK AVENUE,OTHERVILLE SUE,JONES,789 PINE LN,ANYTOWN SUSAN,JONES,789 PINE LANE,ANYTOWN ; run;