One last question
- From: Jonathan Gennick <jonathan@xxxxxxxxxxx>
- To: Wolfgang Breitling <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 16 Jul 2004 21:01:58 -0400
Wolfgang,
One last question, and then I'm done for the night. Here's
that query again:
SQL> SELECT *
2 FROM ( SELECT flag, TO_NUMBER(num) num
3 FROM subtest
4 WHERE flag IN ('A', 'C') )
5 WHERE num > 0;
ERROR:
ORA-01722: invalid number
How can I know whether it is "num > 0" that is causing the
error? Could it be that TO_NUMBER(num) is being evaluated
*before* the subquery's WHERE clause filters out rows NOT IN
('A', 'C')?
In other words, how can I know that the problem I'm seeing
is really the result of the two queries being merged?
Best regards,
Jonathan Gennick --- Brighten the corner where you are
http://Gennick.com * 906.387.1698 * mailto:jonathan@xxxxxxxxxxx
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