How to use Oracle temporary table and verify if it exists

Question

1. I got two errors on the following code.
ORA-06550: line 13, column 4:
PLS-00428: an INTO clause is expected in this SELECT statement
ORA-06550: line 17, column 3:
PLS-00103: Encountered the symbol "CREATE" when expecting one of the following:
2. Can I include this code in the create view statement?
Thanks ahead, I am new to oracle dev world.
===========================================================
DECLARE
l_count NUMBER;
BEGIN
select count(*)
into l_count
from all_tables
where table_name like 'TEMP_SHOW_STAFF_2%';
if l_count > 0 then
select * from TEMP_SHOW_STAFF_2;
else
create global temporary table TEMP_SHOW_STAFF_2
(employee_id Number,
last_name varchar(10),
first_name varchar(10),
salary_amount varchar(10))
on COMMIT delete rows;
end if;
END;

Answer 1

The PL/SQL User's Guide will have much more information, but as a quick example (new_dept is an empty table with the same structure as the DEPT table in the SCOTT schema).
  1  declare
  2    -- Create the type & declare a variable of that type
  3    type dept_arr_typ is table of dept%rowtype;
  4    dept_arr dept_arr_typ;
  5  begin
  6    -- Populate the type in memory
  7    select *
  8      bulk collect into dept_arr
  9      from dept;
10    -- Manipulate the data
11    for i in 1..dept_arr.count
12    loop
13      select 'foo'
14        into dept_arr(i).dname
15        from dual;
16    end loop;
17    -- Write the data back
18    for i in 1..dept_arr.count
19    loop
20      insert into new_dept( deptno, dname, loc )
21        values( dept_arr(i).deptno, dept_arr(i).dname, dept_arr(i).loc );
22    end loop;
23* end;
SCOTT @ nx102 Local> /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.01
SCOTT @ nx102 Local> select * from new_dept;
    DEPTNO DNAME          LOC
        10 foo            NEW YORK
        20 foo            DALLAS
        30 foo            CHICAGO
        40 foo            BOSTONOf course, for this sort of thing, we could do everything in a single SQL statement
INSERT INTO new_dept( deptno, dname, loc )
  SELECT deptno, 'foo', loc
    FROM dept;Collections can be handy if you need to apply a bit more conditional logic, though.
Justin