Oracle Stored Procedure - oracle

Question

My question is pretty basic but I am complete newbie to stored procedure and need to get around quickly. Any help will be appreciated,
Below is the current stored procedure we have,
PROCEDURE get_something(
type IN VARCHAR2,
value IN VARCHAR2,
i_type OUT VARCHAR2,
i_id OUT VARCHAR2)
AS
TYPE t_array
IS
TABLE OF VARCHAR2(320);
identifers t_array;
column_name VARCHAR2(32);
info_qry VARCHAR2(500);
top_row_qry VARCHAR2(500);
BEGIN
identifers := t_array('ABC');
column_name := get_column_name(type);
info_qry := 'select INS.i_id, INS.model from table1 INS where INS.'||column_name||'='''||value||''' order by INS.version desc';
top_row_qry := 'select * from ('||info_qry||') where rownum<=1';
EXECUTE immediate top_row_qry INTO i_id, i_type;
EXCEPTION
WHEN OTHERS THEN
i_id := NULL;
i_type := NULL;
END get_something;
Now when I execute this procedure, it gives me one record due to the rownum condition.
My requirement is to remove the rownum from the top_row_qry, so result would be multiple rows.
I want to store each field into some variable out of which I will use one of the variable for some comparison in the procedure itself.
So basically i want to store the results which I can later loop over and compare with a list of values.
Also, I need to define the list of values in this procedure itself.
Something like below:
list_of_vals:= t_array('ABC','XYZ');
Can anyone help me on this.

Answer 1

I guess you need to use cursor as OUT parameter for your procedure and later use it for your requirement.
Also for "I need to define the list of values in this procedure itself."
you can use a collection the way I have used in the procedure code (v_array).
You can then use a loop to traverse through multiple values for the v_array.
CREATE ORE REPLACE PROCEDURE get_something(type IN VARCHAR2,
value IN VARCHAR2,
out_param OUT sys_refcursor)
AS
TYPE t_array IS TABLE OF VARCHAR2(320);
v_array t_array:=t_array();
-- identifers t_array;
column_name VARCHAR2(32);
info_qry VARCHAR2(500);
top_row_qry VARCHAR2(500);
BEGIN
--To define multiple values for a collection e.g. ABC, XYZ
v_array.EXTEND(2) ;
v_array(1):='ABC' ;
v_array(2):='XYZ' ;
--identifers := t_array('ABC') ;
column_name := get_column_name(TYPE) ;
info_qry := 'select INS.i_id, INS.model from table1 INS where INS.'||column_name||'='''||VALUE||''' order by INS.version desc';
top_row_qry := 'select * from ('||info_qry||')' ;
OPEN out_param FOR top_row_qry ;
EXCEPTION
WHEN OTHERS THEN
OPEN out_param FOR 'select null, null from dual' ;
END get_something ;
/
--To execute the procedure
DECLARE
lv_type VARCHAR2(200);
lv_id NUMBER;
lv_cur SYS_REFCURSOR;
BEGIN
get_something('param1','param2',lv_cur);
LOOP
FETCH lv_cur INTO lv_id,lv_type;
EXIT WHEN lv_cur%NOTFOUND;
--Do something.....
END LOOP;
END;