mobile number validation using sql server

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i want to validate three conditions in mobile number using sql server as follows;

The mobile number should not start with number zero.
The mobile number should not be null
The mobile number should not exceed 10 digits

for that how can i write the sql query.
please help me

Rgds,
Narasiman P.

Posted 1-Jul-13 21:48pm

Member 8054539

Updated 26-Jul-21 22:57pm

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Siddhesh Patankar 2-Jul-13 3:54am

Please tell the datatype you are using to in database to save save mobile no?? Is it varchar or bigint

[no name] 2-Jul-13 4:14am

it is varchar

Pheonyx 2-Jul-13 4:27am

Why do you want to do this validation in SQL? and not in the program (application/webpage) where the data is initially entered?

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Siddhesh Patankar · Answer 1 · 2013-07-01T23:00:00

You can use in the stored procedure used to INSERT,UPDATE during insertion to check the validity

CREATE PROCEDURE sproc_InsertMobNumber
@mobnumber varchar(10)
BEGIN
DECLARE @isvalid bit
SET @isvalid=0
IF(@mobnumber IS NOT NULL AND LEN(@mobnumer) = 10 AND SUBSTRING(@mobnumber,0,1) <> 0 )
BEGIN

--INSERT STATEMENT HERE
SET @isvalid=1
END
SELECT @isvalid
END

If you want to give different error messages just use the conditions in IF to do so.

Member 15302643 · Answer 2 · 2021-07-26T22:57:00

This can be done much more concisely and is potentially better in a function (depending on solution requirements):

CREATE FUNCTION dbo.MobileNumber_isValid (@MobileNo VARCHAR(50))
RETURNS bit
AS
BEGIN
RETURN CASE WHEN @MobileNo LIKE '[1-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]' THEN 1 ELSE 0 END;
END

mobile number validation using sql server

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