Problems looping selected rows in a report

Question

Hi,
I have a report on my form, of type SQL Query (updateable report), that I populate using the following SQL:
SELECT APEX_ITEM.CHECKBOX(1,prvidd,'CHECKED') " ", prvidd, prvnme, prvlev
FROM vu_roleprivs
WHERE rolidd = :P32_ROLIDD
The first two columns are hidden, so that when it comes to inserting/updating then all rows will be processed (this is a requirement).
I use the following process to loop through the report rows...
DECLARE
vROW VARCHAR2(4000);
prvIDD NUMBER;
prvLEV VARCHAR2(3);
BEGIN
FOR i IN 1..APEX_APPLICATION.G_F01.COUNT
LOOP
vROW := APEX_APPLICATION.G_F01(i);
prvIDD := APEX_APPLICATION.G_F02(vROW);
prvLEV := APEX_APPLICATION.G_F04(vROW);
-- Delete the current row from PDROLPRV
DELETE FROM pdrrolprv WHERE rolidd1 = :P32_ROLIDD and prvidd1 = prvIDD;
-- Now insert the record from the table row
INSERT INTO pdrrolprv VALUES(:P32_ROLIDD, prvIDD, prvLEV);
END LOOP;
END;
... but when the process runs I get the following error:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
I can't see where I am going wrong - can anyone help, would be much appreciated.
Best regards
Simon

Answer 1

Hi Simon,
This might be stating the obvious, but first up I would determine exactly where the code is failing by putting dummy values instead of variables into the following statements: -
DELETE FROM pdrrolprv WHERE rolidd1 = :P32_ROLIDD and prvidd1 = prvIDD;
INSERT INTO pdrrolprv VALUES(:P32_ROLIDD, prvIDD, prvLEV);
Assuming the code then runs correctly, start putting your variables back 1 by 1 until you find the failure. You might also want to dump out your variable values: -
vROW := APEX_APPLICATION.G_F01(i);
prvIDD := APEX_APPLICATION.G_F02(vROW);
prvLEV := APEX_APPLICATION.G_F04(vROW);
to a test table.
Hope that helps. Give me a shout if you're still having trouble.
Mike