On 29/10/12 11:22 AM, Xiaognag Wang wrote:
3. the problem is: it is too slow to get data from database, for
example: get 20000 records from database will spend 7 seconds, if I
use odbc instead, it will just need about 30 ms.
Does anyone have experience about this? Could you please give a
suggestion for me?
Did you enable caching of any kind?
You might get row caching by default with odbc but I don't believe that
is on by default with Qt SQL. It makes a big performance difference when
you want to iterate over lots of rows of data returned from a query.
--
Link
_______________________________________________
Interest mailing list
Interest@qt-project.org
http://lists.qt-project.org/mailman/listinfo/interest
