One last question 2004-07-16 - By Jonathan Gennick
I 've definitely got to pay more attention when I cut and
paste addresses. Well, never mind my question below. Thanks
to Wolfgang 's help, I 've got that one nailed.
Best regards,
Jonathan Gennick --- Brighten the corner where you are
http://Gennick.com * 906.387.1698 * mailto:jonathan@(protected)
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Friday, July 16, 2004, 9:01:58 PM, Jonathan Gennick (jonathan@(protected)) wrote:
JG > Wolfgang,
JG > One last question, and then I 'm done for the night. Here 's
JG > that query again:
SQL > > SELECT *
JG > 2 FROM ( SELECT flag, TO_NUMBER(num) num
JG > 3 FROM subtest
JG > 4 WHERE flag IN ( 'A ', 'C ') )
JG > 5 WHERE num > 0;
JG > ERROR:
JG > ORA-01722 (See ORA-01722.ora-code.com): invalid number
JG > How can I know whether it is "num > 0 " that is causing the
JG > error? Could it be that TO_NUMBER(num) is being evaluated
JG > *before* the subquery 's WHERE clause filters out rows NOT IN
JG > ( 'A ', 'C ')?
JG > In other words, how can I know that the problem I 'm seeing
JG > is really the result of the two queries being merged?
JG > Best regards,
JG > Jonathan Gennick --- Brighten the corner where you are
JG > http://Gennick.com * 906.387.1698 * mailto:jonathan@(protected)
JG > Join the Oracle-article list and receive one
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