Create view with variables

Question

Is there any way of create a view that asks for the value of some parameters?
something like...
CREATE VIEW "VIEW1" AS
SELECT NOMBRE
FROM EPTABLA_01
WHERE NOMBRE = ??? WITH READ ONLY

Answer 1

The method below won't "ask" for a value, but if you set the variable, this will work as a parametrized view.
SQL> create context my_ctx using my_proc
  2  /
Context is aangemaakt.
SQL> create procedure my_proc (p_nombre in number)
  2  is
  3  begin
  4    dbms_session.set_context('my_ctx','my_nombre',to_char(p_nombre));
  5  end;
  6  /
Procedure is aangemaakt.
SQL> create table eptabla_01 as select l nombre from (select level l from dual connect by level <= 10)
  2  /
Tabel is aangemaakt.
SQL> create view view1
  2  as
  3  select nombre
  4    from eptabla_01
  5   where nombre = sys_context('my_ctx','my_nombre')
  6    with read only
  7  /
View is aangemaakt.
SQL> exec my_proc(5)
PL/SQL-procedure is geslaagd.
SQL> select * from view1
  2  /
                                NOMBRE
                                     5
1 rij is geselecteerd.
SQL> exec my_proc(8)
PL/SQL-procedure is geslaagd.
SQL> select * from view1
  2  /
                                NOMBRE
                                     8
1 rij is geselecteerd.Regards,
Rob.