Bind ordered pair of nested tables into cursor

Question

Hello,
I'd like to ask you for help. I was searching for this topic, but haven't found any answer.
This is a very simple example that works with HR schema.
I have a stored type:
CREATE TYPE t_ids AS TABLE OF NUMBER(9);
and simple procedure. There is a cursor with paremeter that accepts nested table and uses MEMBER OF operator.
CREATE OR REPLACE PROCEDURE m_test
AS
CURSOR mycur (a_ids t_ids)
IS
SELECT last_name
FROM employees
WHERE employee_id MEMBER OF a_ids;
some_ids t_ids;
TYPE t_result IS TABLE OF employees.first_name%TYPE;
result_table t_result;
BEGIN
some_ids := t_ids(100,101,102);
OPEN mycur (some_ids);
FETCH mycur BULK COLLECT INTO result_table;
CLOSE mycur;
DBMS_OUTPUT.PUT_LINE('count: ' || result_table.COUNT);
END m_test;
This example works fine. BUT - What I need is to modify the cursor in this way:
CURSOR mycur (a_ids t_ids)
IS
SELECT last_name
FROM employees
WHERE *(employee_id,manager_id)* MEMBER OF (a_ids,a_ids);
Well - this does not function - and is't my question - which operator should I use to compare ordered pair with two nested tables?
Thank you!
Pavel Ruzicka
Edited by: user8117512 on 28.8.2009 6:12

Answer 1

user8117512 wrote:
No, no, pls. don't look at repeating a_ids. This is only an example. There could be two different nested tables.
There is, lets say,
(employee_id,manager_id) MEMBER OF (a_fist_table,a_second_table);But this syntax doesn't have a meaning (yet). So you'll have to explain what you mean with that syntax.
Possibilities:
- Treat the two independent collections a_first_table and a_second_table as a collection containing elements that are a tuple. Only use the ones with a subscript occuring in both collections. Then check if the tuple (employee_id,manager_id) occurs within that set.
- Check if employee_id or manager_id occurs within the set a_first_table UNION ALL a_second table. If so, then it's a member.
You'll have to be more specific, before we start guessing.
Regards,
Rob.