How to compare previouse value in pl/sql array

Question

DECLARE
CURSOR stg_raw_cur IS
SELECT RAW_STG_ID,
DEVICE_CD,
MODEL_VERSION,
PLATFORM_CD,
PROFILE_COOKIE,
LOCATION_CD,
SAMPLE_RATE,
EVENT_TYPE_CD,
to_char(to_date(to_date(substr(EVENT_DATE_TIME,1,8),'yyyymmdd')-1 ||
'T' ||
substr(EVENT_DATE_TIME,10,8)
|| 'Z','DD-MON-RR"T"HH24:MI:SS"Z"'), 'YYYYMMDDYY"T"HH24:MI:SS"Z"' ) EVENT_DATE_TIME,
EVENT_SPECIFIC,
BATCH_ID,
DWH_ARVL_DT,
DWH_ARVL_DT_ID,
DWH_CREATE_DT from dwh_stg.stg_raw where batch_id >= 200
order by batch_id asc;
TYPE stgrawarr IS TABLE OF stg_raw_cur%ROWTYPE;
stg_raw_rec stgrawarr;
l_batch_id NUMBER :=0 ;
v_ctr NUMBER :=0;
l_temp_batch_id number :=0;
BEGIN
OPEN stg_raw_cur;
LOOP
FETCH stg_raw_cur BULK COLLECT INTO stg_raw_rec LIMIT 100;
EXIT
WHEN stg_raw_cur%NOTFOUND;
END LOOP;
CLOSE stg_raw_cur;
for i in stg_raw_rec.first..stg_raw_rec.last
loop
dbms_output.put_line('batch id is '|| stg_raw_rec(i).batch_id );
IF l_batch_id != stg_raw_rec(i).batch_id
then
dbms_output.put_line('Different');
end if;
l_temp_batch_id := stg_raw_rec(i).batch_id;
commit;
end loop;
END;
I want to compare previous value of stg_raw_rec(i).batch_id if differnet then increament the value
else leave the same.
thanks.

Answer 1

Try this,
FOR i IN stg_raw_rec.FIRST .. stg_raw_rec.LAST
   LOOP
      IF l_temp_batch_id != stg_raw_rec (i).batch_id
      THEN
         --increment
         l_temp_batch_id := l_temp_batch_id + 1;
      END IF;
       DBMS_OUTPUT.PUT_LINE ('batch id is ' || stg_raw_rec (i).batch_id||' unique batch id is '||l_temp_batch_id);
    --  DBMS_OUTPUT.PUT_LINE ('batch id is ' || stg_raw_rec (i).batch_id);
    --  IF l_batch_id != stg_raw_rec (i).batch_id
    --  THEN
    --    DBMS_OUTPUT.PUT_LINE ('Different');
    --  END IF;
      l_temp_batch_id := stg_raw_rec (i).batch_id;
      COMMIT;
   END LOOP;