to_number question 2004-07-14 - By Stephen.Lee@(protected)
> -- --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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