LYNDA,
If you look at my table staructure service_code in varchar2(30)and the data
in this column can be a number or a number start with a charachter(A-Z)like
A1200,B6500,Z9098 etc,in first subquery I want to select all those
service_code wich start with (0-9) then in WHERE Clause I use TO_NUMBER
becaz I know in subqury It returns all the numeric values:
E.G
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 ----->>> reurn all service
code start with 0-9
> where
> to_number(a.MSC_SERVICE_CODE) between 7 and 30
--->> Here a.MSC_SERVICE_CODE convert it to TO_NUMBER .
Thanks allot
-----Original Message-----
Sent: Tuesday, June 25, 2002 2:09 AM
To: Multiple recipients of list ORACLE-L
Hi Hamid,
Can you to give me what you want to obtain as result to this requette.
I believe that in your request you have a problem of conversion of a
varchar2 in number.
LYNDA HAOUHACH
Ingénieur Systèmes
SONATRACH LTH
Émail: [EMAIL PROTECTED]
> -----Message d'origine-----
> De: Hamid Alavi [SMTP:[EMAIL PROTECTED]]
> Date: lundi 24 juin 2002 11:23
> À: Multiple recipients of list ORACLE-L
> Objet: 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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