How to call two variable which are hold multiple value in to for loop

Question

hi,
i have 4 item ,Two Select List And Two Check Box .Class id And Section are select list and student id and subject id are check box .i want to insert More then one subject id in to table corresponding to more then one student id .
eg. when i select class id 1 and section A then student id of class 1 and section A comes into Student id(check box item ) and all subject corresponding to class 1 comes into subject id( check box item).
now i want to insert multiple selected subjects with respect to selected multiple student id in to table when i press submit Button.
My table is
CREATE TABLE "STUDENT_SUBJECT_DETAIL"
(     "S_NO" NUMBER,
     "STUDENT_ID" NUMBER,
     "SUBJECT_ID" VARCHAR2(50),
     "SESION" VARCHAR2(50)
i am using this Code
DECLARE
STU wwv_flow_global.vc_arr2;
SUB wwv_flow_global.vc_arr2;
begin
STU:= wwv_flow_utilities.string_to_table(:P57_STUDENT_ID);
SUB := wwv_flow_utilities.string_to_table(:P57_SUBJECT_ID);
for i in 1..STU.count loop
for i in 1..SUB.count loop
insert into STUDENT_SUBJECT_DETAIL
values(CLA_SUB_ID_SEQ.nextval,STU(i),SUB(i),:p57_SESION);
end loop;
end loop;
END;
Edited by: Manoj Kaushik on Nov 20, 2009 10:10 PM

Answer 1

DECLARE
    STU wwv_flow_global.vc_arr2;
    SUB wwv_flow_global.vc_arr2;
BEGIN
    STU:= wwv_flow_utilities.string_to_table(:P57_STUDENT_ID);
    SUB := wwv_flow_utilities.string_to_table(:P57_SUBJECT_ID);
    FOR i in 1..STU.count LOOP
        FOR i in 1..SUB.count LOOP
            insert into STUDENT_SUBJECT_DETAIL
            values(CLA_SUB_ID_SEQ.nextval,STU(i),SUB(i),:p57_SESION);
        end loop;
    end loop;
END;This doesn't look right to me:
1. You have 2 loops, and they are both using the variable i as a counter.
2. Your insert needs to be in the form: insert into table (column names) values (values to insert)
3. Why not use a trigger to get the nextval from the sequence?
Trent
Edited by: tr3nton on Nov 21, 2009 4:16 PM