Performance Tuning the AVG function

Question

Dear All,
I have a table which is rapidly growing. We have a query which is frequently executed on this table and it utilizes AVG function without a WHERE clause. Is there a way to tune this query?
I tried to create a Materialized View but Oracle rejects as AVG cannot be used in MV's. Also, it is now really easy at this point in time to rewrite the query.
Appreciate if anybody can help me out in this situation.
OS: Windows 2003 EE
Database: Oracle 10g R2 10.2.0.4
Sample Table:
Create table t(id number, name varchar2(30), amt number);
insert into t select level, 'level - ' || level, level * 100 from dual connect by dual level <= 1000;
commit;
Query:
select avg(amount) from t;
Thanks for you time.
- P

Answer 1

>
... and it utilizes AVG function without a WHERE clause
>
As Aman stated, a full table scan will be needed for a statement without a WHERE clause.
See these threads on how to post a tuning request
When your query takes too long ...
HOW TO: Post a SQL statement tuning request - template posting
HTH
Srini