ORA-22905 - when querying a table type with a select statement

Question

 DECLARE
 TYPE record_AB IS RECORD
   (
      AA              VARCHAR2 (16 BYTE),
      BB    VARCHAR2 (16 BYTE)
   );

  TYPE type_tab_AB IS TABLE OF record_AB
             


        

Answer 1

You cannot query a type created inside a pl/sql block. You need to create it at sql prompt and then you can query it. See exmaple below :

scott@ORA92> CREATE OR REPLACE TYPE emp_type AS OBJECT
  2    (id   NUMBER,
  3     name VARCHAR2(20));
  4  /

Type created.

scott@ORA92> CREATE OR REPLACE TYPE emp_tab AS TABLE OF emp_type;
  2  /

Type created.

scott@ORA92> VARIABLE g_ref REFCURSOR
scott@ORA92> DECLARE
  2    employees emp_tab := emp_tab();
  3  BEGIN
  4    employees.EXTEND(2);
  5    employees(1) := emp_type (1, 'name1');
  6    employees(2) := emp_type (2, 'name2');
  7    OPEN :g_ref FOR
  8    SELECT * FROM TABLE (CAST (employees AS emp_tab));
  9  END;
 10  /