Oracle-L: RE: NEED YOUR OPINION

From: Hamid Alavi <hamid.alavi_at_quovadx.com>
Date: Tue, 25 Jun 2002 08:13:40 -0800
Message-ID: <F001.00486DB9.20020625081340@fatcity.com>

Stefan,

If you look at the query in the first part it returns all the numbers then I use TO_NUMBER, the strange is when I drop the table and recreate it the query work fine.
Thanks

-----Original Message-----
Sent: Tuesday, June 25, 2002 2:48 AM
To: Multiple recipients of list ORACLE-L

Hi Hamid

by making sure that the first charakter of msc_service_code is in the range [0-9],
you have no guarantee for the rest of the VARCHAR being numeric, too. It could
contain anything else, so your to_number might go down the drain ...

Regards,
Stefan

-----Ursprüngliche Nachricht-----
Von: Hamid Alavi [mailto:hamid.alavi_at_quovadx.com] Gesendet: Dienstag, 25. Juni 2002 01:23
An: Multiple recipients of list ORACLE-L Betreff: NEED YOUR OPINION

List,

I have a table with the following structure:

CREATE TABLE SERVICE_CODE_MSC (
  MSC_SERVICE_ID NUMBER (4) NOT NULL,   MSC_SERVICE_CODE VARCHAR2 (30) NOT NULL,   CONSTRAINT MSC_PK
  PRIMARY KEY ( MSC_SERVICE_ID, MSC_SERVICE_CODE )     USING INDEX
     TABLESPACE USERS Here is some sample of this table:

service_id     service_code
-------------      ------------------
7		a1000
7		a2000
30		e1230
30		e1234
10		12098
20		130987

When I run the followinh query on this table I get invalid number(ORA-01722), then when I drop tha table and reload the data the query running OK, Here is the query I am running:

select count(*)

	from (select MSC_SERVICE_CODE,MSC_MTF_SERVICE_ID
   	  from MTF_SERVICE_CODE_MSC 
          where 
       	  substr(MSC_SERVICE_CODE, 1, 1) in
('9','8','7','6','5','4','3','2','1','0')) a
		 	where
       		 to_number(a.MSC_SERVICE_CODE) between 7 and 30

Any Idea ? why this hapenning?

Thanks Allot.

Hamid Alavi
Office 818 737-0526
Cell 818 402-1987

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Author: Hamid Alavi
INET: hamid.alavi_at_quovadx.com

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Author: Stefan Jahnke
INET: Stefan.Jahnke_at_bov.de

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Confidentiality Statement ======================= The information contained in this message and any attachments is intended only for the use of the individual or entity to which it is addressed, and may contain information that is PRIVILEGED, CONFIDENTIAL and exempt from disclosure under applicable law. If you have received this message in error, you are prohibited from copying, distributing, or using the information. Please contact the sender immediately by return e-mail and delete the original message from your system. ===================== End Confidentiality Statement =====================

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Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author: Hamid Alavi
INET: hamid.alavi_at_quovadx.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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