Subject | Re: [Firebird-general] OpenCRX DBMS comparison |
---|---|
Author | Ann W. Harrison |
Post date | 2005-05-13T16:45:36Z |
Martijn Tonies wrote:
aggregates, distinct, or group by. Not an excuse, but a clarification
for the naive. A simple view should be optimized well. A view that
compresses data will be materialized first, then integrated with the
rest of the query.
Regards,
Ann
>I think you'll find that the views that are problematic views all have
> I also know that the optimizing of a statement that included a view is,
> well, sub-optimal. :-)
>
aggregates, distinct, or group by. Not an excuse, but a clarification
for the naive. A simple view should be optimized well. A view that
compresses data will be materialized first, then integrated with the
rest of the query.
Regards,
Ann