Home Forums SQL Server 2005 T-SQL (SS2K5) Replace non numeric characters in string RE: Replace non numeric characters in string

  • March 17, 2008 at 6:07 pm

    #790632

    GSquared (3/17/2008)

    I haven't tested this enough to be sure, but it should work:

    Absolutely the right idea with the numbers table, Gus 🙂 but you don't need the CTE or a derived table.

    CREATE FUNCTION dbo.fnDigitsOnly (@pString VARCHAR(8000))

    -- Tally table can be found at http://www.sqlservercentral.com/scripts/Advanced+SQL/62486/

    RETURNS VARCHAR(8000) AS

    BEGIN

    DECLARE @CleanString VARCHAR(8000)

    SELECT @CleanString = ISNULL(@CleanString,'')+SUBSTRING(@pString,N,1)

    FROM dbo.Tally WITH (NOLOCK)

    WHERE N<=LEN(@pString)

    AND SUBSTRING(@pString,N,1) LIKE ('[0-9]')

    RETURN @CleanString

    END

    --Jeff Moden

    RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
    First step towards the paradigm shift of writing Set Based code:
    ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

    Change is inevitable... Change for the better is not.

    Helpful Links:
    How to post code problems
    How to Post Performance Problems
    Create a Tally Function (fnTally)