Thank you, Vibhor!
I am wondering if caching will make such a big difference. For example, if A is 15 minutes, then B is 1.5 hrs.
What could be other factors in case database server is separated from clients (on different computer systems)?
Preetika
On Mon, Mar 21, 2011 at 2:48 AM, Vibhor Kumar
<vibhor.kumar@enterprisedb.com> wrote:
On Mar 21, 2011, at 10:42 AM, preetika tyagi wrote:
> Query: INSERT INTO table1 SELECT * FROM table2.
> Execution Time: A ms.
>
> Query: INSERT INTO table1 SELECT * FROM table2.
> Execution Time: B ms
If session is same, then
B < A if the data is cached due to execution of first statement.
B > A, if the there is any change happened Or Any session has evicted the cached data.
Thanks & Regards,
Vibhor Kumar
EnterpriseDB Corporation
The Enterprise PostgreSQL Company
vibhor.kumar@enterprisedb.com
Blog:http://vibhork.blogspot.com