Procedure parameter of type returned by function

Question

Hi there
I want to know if it's possible to pass a parameter to procedure of type returned by function
Something like that
pocedure test(x in varchar2
,y in my_function(param)
)

Answer 1

Definitely don't fullish yourself ;-)
AFAIK you cannot declare a variable based on the return type of a function.
Perhaps though you are looking for SUBTYPEs.
SQL> SET SERVEROUTPUT ON;
SQL> DECLARE
  2    SUBTYPE subtype_name IS VARCHAR2 (30) NOT NULL;
  3
  4    PROCEDURE procedure_name (
  5      parameter_name IN subtype_name)
  6    IS
  7    BEGIN
  8      DBMS_OUTPUT.PUT_LINE (parameter_name);
  9    END;
10
11    FUNCTION function_name (
12      parameter_name IN DATE)
13      RETURN subtype_name
14    IS
15    BEGIN
16      RETURN TO_CHAR (parameter_name, 'DAY');
17    END;
18
19  BEGIN
20    procedure_name (function_name (SYSDATE));
21  END;
22  /
THURSDAY
PL/SQL procedure successfully completed.
SQL>