I have a table which has the following structure and sample data:
ITEM LOC STOCK
0001 KS5 10
0001 KS6 30
0002 KS5 10
0002 KS6 20
I need to query cross tab so that I get
ITEM KS5 KS6
0001 10 30
0002 10 20
The LOC (KS5 and KS6) can vary and new locations can be added.
How can I get the desired result?
For dynamically generated results you need some dynamic PLSQL solution, something like this procedure creating view v_list_loc:
create or replace procedure p_list_loc is
v_sql varchar2(32000) := '';
begin
for c in (select distinct loc from test order by loc) loop
v_sql := v_sql || '''' ||c.loc|| ''' '||c.loc||',';
end loop;
v_sql := 'create or replace view v_list_loc as '
||'select * from (select item, loc, stock from test) pivot (sum(stock) '
||'for (loc) in ('||rtrim(v_sql, ',')||'))';
execute immediate v_sql;
end p_list_loc;
In procedure code replace test with your table name. Compile this procedure, run and select results from generated view v_list_loc:
SQL> exec p_list_loc;
PL/SQL procedure successfully completed
SQL> select * from v_list_loc;
ITEM KS5 KS6
----- ---------- ----------
0001 10 30
0002 10 20
Every time when new values in column loc appears you need to execute procedure before selecting from view.