One last question 2004-07-17 - By dhotka@(protected)
Hi Jonathan,
One of the rows in the 'num ' field has something other than a number in
it=2E=2E=2EI 've seen this problem before=2E My guess is you have more tha=
n just
numbers num field, and it is something higher than '9 '=2E=2E=2Erun the que=
ry
without the to_number function and see what the data looks like=2E=2E=2Epe=
rhaps
spool it to a file for closer examination=2E
Dan
Original Message:
-- ---- ---- ----
From: Jonathan Gennick jonathan@(protected)=2Ecom
Date: Fri, 16 Jul 2004 21:01:58 -0400
To: oracle-l@(protected)=2Eorg
Subject: One last question
Wolfgang,
One last question, and then I 'm done for the night=2E 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 (See ORA-01722.ora-code.com): 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=2Ecom * 906=2E387=2E1698 * mailto:jonathan@(protected)=2Ecom
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