How to return all columns starting with E?

Question

How to return all columns starting with E in emp table?
My attempts (below) were unsuccessful.
SQL> SELECT E* from emp;
SELECT E* from emp
ERROR at line 1:
ORA-00936: missing expression
SQL> SELECT E.* FROM EMP;
SELECT E.* FROM EMP
ERROR at line 1:
ORA-00904: "E": invalid identifier
SQL> SELECT EMP.E* FROM EMP;
SELECT EMP.E* FROM EMP
ERROR at line 1:
ORA-00936: missing expression

Answer 1

You need to do it dynamically:
SQL>  var cur refcursor
SQL>  declare
  co varchar2(40);
begin
  for c in (select column_name from cols where table_name = 'EMP' and column_name like 'E%') loop
    co := co || c.column_name || ',';
  end loop;
  open :cur for 'select '|| rtrim(co,',') || ' from emp';
end;
PL/SQL procedure successfully completed.
SQL>  print cur
     EMPNO ENAME    
      7369 SMITH    
      7499 ALLEN    
      7521 WARD     
      7566 JONES    
      7654 MARTIN   
      7698 BLAKE    
      7782 CLARK    
      7788 SCOTT    
      7839 KING     
      7844 TURNER   
      7876 ADAMS    
      7900 JAMES    
      7902 FORD     
      7934 MILLER   
14 rows selected.