Analytic query !!!!

Question

Hi all,
I have the following table with the set of data. This is just a short version of the actual table. The actual table has around 13 million records.
CREATE TABLE MY_TEST_TABLE(ID NUMBER,KEY NUMBER,TYPEOFRECORD VARCHAR2(20BYTE),
MYDATE DATE);
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values(6366556, 404887, 'GP', TO_DATE('07/23/2004 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(6366516, 404887, 'GP', TO_DATE('07/23/2004 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(6366565, 404887, 'GP', TO_DATE('07/23/2004 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(6366568, 404887, 'GP', TO_DATE('07/23/2004 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(7076940, 404887, 'CE', TO_DATE('11/04/2004 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(18197564, 404887, 'CE', TO_DATE('08/29/2005 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(17561339, 404887, 'CE', TO_DATE('05/05/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(18381063, 404887, 'CE', TO_DATE('05/19/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(18381260, 404887, 'CE', TO_DATE('06/09/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(18386869, 404887, 'CE', TO_DATE('06/10/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(18895620, 404887, 'CE', TO_DATE('06/10/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(17769950, 404887, 'CE', TO_DATE('05/06/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(18096803, 404887, 'CE', TO_DATE('05/19/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(18381262, 404887, 'CE', TO_DATE('06/09/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into MY_TEST_TABLE(ID, KEY, TYPEOFRECORD, MYDATE)
Values
(18381270, 404887, 'CE', TO_DATE('06/09/2006 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
COMMIT;
My requirement is to get the highest ID value, TYPEOFRECORD value for a given key value. So I wrote this query:
select KEY, max(ID) over (partition by KEY) myid, TYPEOFRECORD
from MY_TEST_TABLE;
but this query returns as many number of records as there are records for a particular KEY value.
But if I write this query it gives the correct result:
select tt1.key,tt1.id,tt1.MYDATE,tt1.TYPEOFRECORD
from MY_TEST_TABLE tt1 where (tt1.KEY,tt1.ID) in
(select tt.KEY, max(tt.ID) myid
from MY_TEST_TABLE tt
group by tt.key)
What wrong I am doing in the analytic query.
Thanks
Vinayak

Answer 1

you should not look for analytic, but for aggregates :
select KEY, max(ID) id, max(TYPEOFRECORD) keep (dense_rank first order by id) typeofrecord
from MY_TEST_TABLE
group by key;
       KEY         ID TYPEOFRECORD
    404887   18895620 GPwith analytics, you can for each line get the max.
like in :
select KEY, id, TYPEOFRECORD, max(id) over (partition by key) maxid, 
max(TYPEOFRECORD) keep (dense_rank first order by id) over (partition by key) maxTYPEOFRECORD
from MY_TEST_TABLE;
       KEY         ID TYPEOFRECORD              MAXID MAXTYPEOFRECORD
    404887    6366556 GP                     18895620 GP
    404887   18381270 CE                     18895620 GP
    404887    6366565 GP                     18895620 GP
    404887    6366568 GP                     18895620 GP
    404887    7076940 CE                     18895620 GP
    404887   18197564 CE                     18895620 GP
    404887   17561339 CE                     18895620 GP
    404887   18381063 CE                     18895620 GP
    404887   18381260 CE                     18895620 GP
    404887   18386869 CE                     18895620 GP
    404887   18895620 CE                     18895620 GP
    404887   17769950 CE                     18895620 GP
    404887   18096803 CE                     18895620 GP
    404887   18381262 CE                     18895620 GP
    404887    6366516 GP                     18895620 GPok?