> -----Original Message-----
> Maybe it has something to do how optimizer transforms your
> query
I'm thinking that this is probably the case. The table DOES have entries
that will break to_number; but the output of the subquery does not. It
looks like the WHERE clause might be operating on the table rather the
result of the subquery. That was one reason I used the subquery: I know the
output from it will be only numeric. I didn't (and don't) want to have to
worry about which part of the WHERE clause gets evaluated first: The "where
nbr_cc_fop_name in ('AX','MC','VI','DS') part"; or the to_number biz. I
figured if I did the subquery thing, then all the to_number stuff would HAVE
to work. This sure does look like a "feature" to me (at a list price of
$40,000 per CPU). Either that, or there are some fine points of SQL and
subqueries I haven't understood yet. By the way, it never made any
difference if I did the to_number functions inside the subquery or in the
WHERE clause.
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Received on Wed Jul 14 2004 - 21:34:39 CDT
