Built-in functions to check for numeric or string

Hi,
Is there any built-in functions in java for checking if the value is numeric or is a string ?
tks & rdgs

Hi,
I have a string og such value "1 testing" that i will be using stringtokenzier to get the individual parts but i do not want to return "1" but only "testing" so i'll need to check whether if the parts can be converted to numeric if so , then i don't return else return the value
tks & rdgs

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Range check for numeric values in varchar2 type column

SQL oracle 10g windows XP
I have a table which has column of type varchar2 e.g
create table osa_gms_mailbox(reg_address varchar2(60),bin_address varchar2(60));
let us insert some sample rows:
insert into osa_gms_mailbox values ('8000','8000');
insert into osa_gms_mailbox values ('9000','9000');
insert into osa_gms_mailbox values ('[email protected]','[email protected]');
If i try to run the query :
select reg_address from (
select reg_address from osa_gms_mailbox
MINUS
select reg_address from osa_gms_mailbox where
regexp_like(reg_address,'^[a-z]+|[A-Z]+$')) temp
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or
select reg_address from (
select reg_address from osa_gms_mailbox
MINUS
select reg_address from osa_gms_mailbox where
regexp_like(reg_address,'^[a-z]+|[A-Z]+$'))
where to_number(reg_address) between 1000 and 10000;
it gives ORA-01722: invalid number .
how can i get the numeric comparision done for varchar2 field and exclude the rows which have atleast one alphabet (a-z,A-Z)
Thanks

Hi
Please check this sample , it may useful to you
/*Creating a Table*/
Create Table CHECKVARCHAR( CheckValue Varchar2(20) );
/* Inserting values in to the column with numbers and Strings */
Insert into CHECKVARCHAR Values ( 1000 );
Insert into CHECKVARCHAR values ( 2000 );
Insert into CHCEKVARCHAR values ( 10000 );
Insert into CHECKVARCHAR values ( 'Abc' );
Insert into CHECKVARCHAR values ( 'zyx' );
/*Here is the Query to avoid Invalid Number */
Select * from
( Select CheckValue
from Checkvarchar
where Ascii( Substr( CheckValue,1,1 ) ) not between 65 and 122 )
where CheckValue between 1000 and 10000;

Checke for letters in string (9i)

Hi All,
I have a string, something like "01A" and I would like to:
1 - Check if it end with letters, it can be any letter.
2 - split the numbers and the letters to get for example "01" and "A" in seperate variables.
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thanks for helping.
Alex

substr(yourstiring,-1) will give you the last character
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rcasha wrote:
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Function to check whether a value is NUMERIC

Hi
I have a requirment, where I need to check for a field whether it contains a valid numeric value or not.
Could you please suggest a function.
If I use TO_NUMBER(VAL1) it throws an exception in case of an non_numeric value.
The requirement is as follows.
If the field 'val1' contains a numeric value then the function should return the coressponding nueric value. If it is not,then return a boolean value are a return code instead of exception.
Is there are built in function in ORACLE to acheive the same , please advice.

Hi,
The best way to do it is using User Defined Function, i have written a function as per your Requirement...It is give the data if it is numeric else it will return FALSE
create table Testdata
as
select '10' n from dual
union all
select 'xx' from dual
union all
select '20' from dual
union all
select '3YY' from dual;
CREATE OR REPLACE FUNCTION IsNumeric
(p_col_value IN VARCHAR2)
RETURN     VARCHAR2
AS
v_val NUMBER;
BEGIN
v_val := TO_NUMBER (p_col_value);
RETURN 'TRUE';
EXCEPTION
WHEN VALUE_ERROR THEN
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END IsNumeric;
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Regards
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Check for non-numeric characters in textbox input

I have a form with several textboxes, each of which can accept numeric input. I want to write a validation/ plsql block that checks for a non-numeric character in the input, so that my user sees a customized error message rather than a database error. Any tips on how I can achieve that? Is there any function like "isalpha" in C, which can directly do the job?
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Page Validation - Function Returning Boolean - Check for NULL

I have 3 Page Validations which all fire on "When Button Pressed" = "Submit".
 
Number 1 is of type "Item specified is NOT NULL" for "P199_BUSINESS_UNIT1".
 
Number 2 is of type "Item specified is NOT NULL" for "P199_BUSINESS_UNIT2".
 
Number 3 is of type "Function Returning Boolean" and has the following code:
 
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If I change the code to:
 
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Scott,
 
Instead of adding the Validations, I changed my code from:
 
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 RETURN TRUE ;
END IF ;
 to the following and got the desired results:
 
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 REPLACE(:P199_BUSINESS_UNIT2,'%null' || '%',NULL) IS NULL THEN
 RETURN FALSE ;
ELSE
 RETURN TRUE ;
END IF ; 
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Thanks for your help.

Null check for "ora:readFile()" function

Hi,
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Hi all,
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Hi,
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null

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Built-in functions to check for numeric or string

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