Method 1:

 proc sql;
    create table foo like sashelp.class;
    quit;

Method 2:

proc sql;
create table bar as 
    select * from sashelp.class (obs=0);
quit;

Method 1 should be the preferred option

PROC SQL options;
  SELECT column(s)
FROM table-name | view-name
   WHERE expression
   GROUP BY column(s)
   HAVING expression
ORDER BYcolumn(s);
QUIT;

Example 1:

proc sql;
select name
       ,sex
    from sashelp.class ;
quit;

The SELECT statement is specified in this order :

1.select;
2.from;
3.where;
4.group by;
5.having;
6.order by.

"select" and "from" are required. The other clauses are optional.