Re: Performance comparison between Postgres and Greenplum

On Mon, Jul 13, 2009 at 5:23 AM, Suvankar Roy<suvankar.roy@tcs.com> wrote:
>
> Hi,
>
> I have some 99,000 records in a table (OBSERVATION_ALL) in a Postgres DB as
> well as a Greenplum DB.
>
> The Primary key is a composite one comprising of 2 columns (so_no,
> serial_no).
>
> The execution of the following query takes 8214.016 ms in Greenplum but only
> 729.134 ms in Postgres.
> select * from observation_all order by so_no, serial_no;
>
> I believe that execution time in greenplum should be less compared to
> postgres. Can anybody throw some light, it would be of great help.

What versions are you comparing?