I just discovered this :
http://www.postgresql.org/docs/7.4/static/jdbc-query.html#AEN24298
On Tue, 12 Oct 2004 04:43:43 -0700 (PDT), my ho <mthoatbanjo@yahoo.com>
wrote:
> Hi,
> If anyone can help pls, I have a question abt the
> execution of cursor create/fetch/move , in particular
> about disk cost. When a cursor is created, is the
> whole table (with the required columns) got put into
> memory? otherwise how does it work? (in term of disk
> read and transfer?) after user issues command
> move/fetch, how does postgre speed up the query in
> compare to normal selection?
> Thanks a lot,
> regards,
> MT Ho
>
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Mail Address AutoComplete - You start. We finish.
> http://promotions.yahoo.com/new_mail
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>