On 5/18/12 10:02 AM, George Silva wrote:
Yes and no.
And it does not (can not) protect one from building a bad model which
could result in bad performance. So having a requirement for high
performance without having done some reading on data normalization and
SQL schema design probably gets the new user out of the "guaranteed
well-optimized" realm.
One should also know how to work with the underlying database to
evaluate and update the optimizer information otherwise the optimizer
might make bad guesses for an otherwise perfectly good query.
hth
- Tom
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