Get resultset from oracle stored procedure - oracle

Question

I'm working on converting a stored procedure from SQL server to Oracle.
This stored procedure provides a direct resultset. I mean that if you call the stored procedure in eg Management Studio you directly obtain the resultset.
By converting to Oracle I walk against the problem that I in Oracle will not display the resultset
I searched on the Internet and have seen that the stored procedure should yield a REF CURSOR, but I still walk with the problem to write a little piece of code to obtain the resultset en process that.
Pseudo Code:
Call stored procedure and obtain cursor
Do something with that cursor so that my resultset appears
Someone an idea?

Answer 1

In SQL Plus:
SQL> create procedure myproc (prc out sys_refcursor)
2 is
3 begin
4 open prc for select * from emp;
5 end;
6 /
Procedure created.
SQL> var rc refcursor
SQL> execute myproc(:rc)
PL/SQL procedure successfully completed.
SQL> print rc
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- ----------- ---------- ---------- ----------
7839 KING PRESIDENT 17-NOV-1981 4999 10
7698 BLAKE MANAGER 7839 01-MAY-1981 2849 30
7782 CLARKE MANAGER 7839 09-JUN-1981 2449 10
7566 JONES MANAGER 7839 02-APR-1981 2974 20
7788 SCOTT ANALYST 7566 09-DEC-1982 2999 20
7902 FORD ANALYST 7566 03-DEC-1981 2999 20
7369 SMITHY CLERK 7902 17-DEC-1980 9988 11 20
7499 ALLEN SALESMAN 7698 20-FEB-1981 1599 3009 30
7521 WARDS SALESMAN 7698 22-FEB-1981 1249 551 30
7654 MARTIN SALESMAN 7698 28-SEP-1981 1249 1400 30
7844 TURNER SALESMAN 7698 08-SEP-1981 1499 0 30
7876 ADAMS CLERK 7788 12-JAN-1983 1099 20
7900 JAMES CLERK 7698 03-DEC-1981 949 30
7934 MILLER CLERK 7782 23-JAN-1982 1299 10
6668 Umberto CLERK 7566 11-JUN-2009 19999 0 10
9567 ALLBRIGHT ANALYST 7788 02-JUN-2009 76999 24 10

Answer 2

Oracle is not sql server. Try the following in SQL Developer
variable rc refcursor;
exec testproc(:rc2);
print rc2

Answer 3

My solution was to create a pipelined function. The advantages are that the query can be a single line:
select * from table(yourfunction(param1, param2));
You can join your results to other tables or filter or sort them as you please..
the results appear as regular query results so you can easily manipulate them.
To define the function you would need to do something like the following:
-- Declare the record columns
TYPE your_record IS RECORD(
my_col1 VARCHAR2(50),
my_col2 varchar2(4000)
);
TYPE your_results IS TABLE OF your_record;
-- Declare the function
function yourfunction(a_Param1 varchar2, a_Param2 varchar2)
return your_results pipelined is
rt your_results;
begin
-- Your query to load the table type
select s.col1,s.col2
bulk collect into rt
from your_table s
where lower(s.col1) like lower('%'||a_Param1||'%');
-- Stuff the results into the pipeline..
if rt.count > 0 then
for i in rt.FIRST .. rt.LAST loop
pipe row (rt(i));
end loop;
end if;
-- Add more results as you please....
return;
end find;
And as mentioned above, all you would do to view your results is:
select * from table(yourfunction(param1, param2)) t order by t.my_col1;

Answer 4

Hi I know this was asked a while ago but I've just figured this out and it might help someone else. Not sure if this is exactly what you're looking for but this is how I call a stored proc and view the output using SQL Developer.
In SQL Developer when viewing the proc, right click and choose 'Run' or select Ctrl+F11 to bring up the Run PL/SQL window. This creates a template with the input and output params which you need to modify. My proc returns a sys_refcursor. The tricky part for me was declaring a row type that is exactly equivalent to the select stmt / sys_refcursor being returned by the proc:
DECLARE
P_CAE_SEC_ID_N NUMBER;
P_FM_SEC_CODE_C VARCHAR2(200);
P_PAGE_INDEX NUMBER;
P_PAGE_SIZE NUMBER;
v_Return sys_refcursor;
type t_row is record (CAE_SEC_ID NUMBER,FM_SEC_CODE VARCHAR2(7),rownum number, v_total_count number);
v_rec t_row;
BEGIN
P_CAE_SEC_ID_N := NULL;
P_FM_SEC_CODE_C := NULL;
P_PAGE_INDEX := 0;
P_PAGE_SIZE := 25;
CAE_FOF_SECURITY_PKG.GET_LIST_FOF_SECURITY(
P_CAE_SEC_ID_N => P_CAE_SEC_ID_N,
P_FM_SEC_CODE_C => P_FM_SEC_CODE_C,
P_PAGE_INDEX => P_PAGE_INDEX,
P_PAGE_SIZE => P_PAGE_SIZE,
P_FOF_SEC_REFCUR => v_Return
);
-- Modify the code to output the variable
-- DBMS_OUTPUT.PUT_LINE('P_FOF_SEC_REFCUR = ');
loop
fetch v_Return into v_rec;
exit when v_Return%notfound;
DBMS_OUTPUT.PUT_LINE('sec_id = ' || v_rec.CAE_SEC_ID || 'sec code = ' ||v_rec.FM_SEC_CODE);
end loop;
END;

Answer 5

In SQL Plus:
SQL> var r refcursor
SQL> set autoprint on
SQL> exec :r := function_returning_refcursor();
Replace the last line with a call to your procedure / function and the contents of the refcursor will be displayed

Answer 6

FYI as of Oracle 12c, you can do this:
CREATE OR REPLACE PROCEDURE testproc(n number)
AS
cur SYS_REFCURSOR;
BEGIN
OPEN cur FOR SELECT object_id,object_name from all_objects where rownum < n;
DBMS_SQL.RETURN_RESULT(cur);
END;
/
EXEC testproc(3);
OBJECT_ID OBJECT_NAME
---------- ------------
100 ORA$BASE
116 DUAL
This was supposed to get closer to other databases, and ease migrations.
But it's not perfect to me, for instance SQL developer won't display it nicely as a normal SELECT.
I prefer the output of pipeline functions, but they need more boilerplate to code.
more info:
https://oracle-base.com/articles/12c/implicit-statement-results-12cr1

Answer 7

CREATE OR REPLACE PROCEDURE SP_Invoices(p_nameClient IN CHAR)
AS
BEGIN
FOR c_invoice IN
(
SELECT CodeInvoice, NameClient FROM Invoice
WHERE NameClient = p_nameClient
)
LOOP
dbms_output.put_line('Code Invoice: ' || c_invoice.CodeInvoice);
dbms_output.put_line('Name Client : ' || c_invoice.NameClient );
END LOOP;
END;
Executing in SQL Developer:
BEGIN
SP_Invoices('Perico de los palotes');
END;
-- Or:
EXEC SP_Invoices('Perico de los palotes');
Output:
> Code Invoice: 1
> Name Client : Perico de los palotes
> Code Invoice: 2
> Name Client : Perico de los palotes