Hamid, You WHERE clause is causing the problem. When you say : to_number(a.MSC_SERVICE_CODE) between 7 and 30
you are forcing Oracle to convert the values of the column MSC_SERVICE_CODE to a number. Your data shows that the current values contain letters, thus the "invalid number" error. Hope this helps. Tom Mercadante Oracle Certified Professional -----Original Message----- Sent: Monday, June 24, 2002 7:23 PM To: Multiple recipients of list ORACLE-L 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 ======================= 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 ===================== -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Hamid Alavi INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Mercadante, Thomas F INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).