to_number question 2004-07-15 - By Tanel Poder
> This begs the question of how the optimizer should decide
> whether it 's safe to merge a subquery and main query.
> Clearly, the optimizer seems to have made the wrong call
> in the case of the query we 've been talking about.
I actually agree with both sides:
- with Wolfgang that a true relational database is meant to work with
"relational " queries and doesn 't have to support any ill constructions which
users come up with.
- on the other hand I definitely agree with Stephen and Jonathan that a
$40000 per CPU modern commercial database product should be able to work
around this kind of issue by itself.
Tanel.
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