Merging multiple rows to one row

Hi,
I need a help.
I have the below table, table name is ITEM_LIST
ITEM VARCHAR2
COUNT_ITEM NUMBER
STATUS VARCHAR2
ITEM COUNT_ITEM STATUS
item1 1 in
item1 1 out
item1 2 out
item2 1 in
item2 1 in
item3 1 in
item3 1 out
And if I run,
SELECT ITEM, SUM(COUNT_ITEM), STATUS
FROM ITEM_LIST GROUP BY ITEM, STATUS
The below list is coming
ITEM SUM(COUNT_ITEM) STATUS
item1 1 in
item1 3 out
item2 2 in
item3 1 in
item3 1 out
This is the expected result but my real concern is to update the origin table(ITEM_LIST) the same as the above list.
Pleas help me.
Thank you in advance.
Message was edited by:
ginam

Instead of create ,rename and drop you can go for update, dellete
SQL> select * from item_list;
ITEM       COUNT_ITEM STATUS
item1               1 in
item1               2 out
item1               2 out
item2               2 out
item2               2 out
item3               1 out
item3               1 in
7 rows selected.
SQL> update item_list i
2 set count_item = (select sum(count_item)
3                    from item_list
4                    where item = i.item
5                    and status=i.status);
7 rows updated.
SQL> delete from item_list
2 where rowid not in (select min(rowid)
3                       from item_list
4                      group by item,status);
2 rows deleted.
SQL> select * from item_list;
ITEM       COUNT_ITEM STATUS
item1               1 in
item1               4 out
item2               4 out
item3               1 out
item3               1 in

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