display number into words with use of sql function

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO



Create FUNCTION [dbo].[udf_Num_ToWords] (

@Number Numeric (38, 0)
) RETURNS VARCHAR(8000)

AS BEGIN

DECLARE @inputNumber VARCHAR(38)
DECLARE @NumbersTable TABLE (number CHAR(2), word VARCHAR(10))
DECLARE @outputString VARCHAR(8000)
DECLARE @length INT
DECLARE @counter INT
DECLARE @loops INT
DECLARE @position INT
DECLARE @chunk CHAR(3) -- for chunks of 3 numbers
DECLARE @tensones CHAR(2)
DECLARE @hundreds CHAR(1)
DECLARE @tens CHAR(1)
DECLARE @ones CHAR(1)

IF @Number = 0 Return 'Zero'

SELECT @inputNumber = CONVERT(varchar(38), @Number)
     , @outputString = ''
     , @counter = 1
SELECT @length   = LEN(@inputNumber)
     , @position = LEN(@inputNumber) - 2
     , @loops    = LEN(@inputNumber)/3

IF LEN(@inputNumber) % 3 <> 0 SET @loops = @loops + 1

INSERT INTO @NumbersTable   SELECT '00', ''
    UNION ALL SELECT '01', 'one'      UNION ALL SELECT '02', 'two'
    UNION ALL SELECT '03', 'three'    UNION ALL SELECT '04', 'four'
    UNION ALL SELECT '05', 'five'     UNION ALL SELECT '06', 'six'
    UNION ALL SELECT '07', 'seven'    UNION ALL SELECT '08', 'eight'
    UNION ALL SELECT '09', 'nine'     UNION ALL SELECT '10', 'ten'
    UNION ALL SELECT '11', 'eleven'   UNION ALL SELECT '12', 'twelve'
    UNION ALL SELECT '13', 'thirteen' UNION ALL SELECT '14', 'fourteen'
    UNION ALL SELECT '15', 'fifteen'  UNION ALL SELECT '16', 'sixteen'
    UNION ALL SELECT '17', 'seventeen' UNION ALL SELECT '18', 'eighteen'
    UNION ALL SELECT '19', 'nineteen' UNION ALL SELECT '20', 'twenty'
    UNION ALL SELECT '30', 'thirty'   UNION ALL SELECT '40', 'forty'
    UNION ALL SELECT '50', 'fifty'    UNION ALL SELECT '60', 'sixty'
    UNION ALL SELECT '70', 'seventy'  UNION ALL SELECT '80', 'eighty'
    UNION ALL SELECT '90', 'ninety'  

WHILE @counter <= @loops BEGIN

SET @chunk = RIGHT('000' + SUBSTRING(@inputNumber, @position, 3), 3)

IF @chunk <> '000' BEGIN
SELECT @tensones = SUBSTRING(@chunk, 2, 2)
    , @hundreds = SUBSTRING(@chunk, 1, 1)
    , @tens = SUBSTRING(@chunk, 2, 1)
    , @ones = SUBSTRING(@chunk, 3, 1)

IF CONVERT(INT, @tensones) <= 20 OR @Ones='0' BEGIN
SET @outputString = (SELECT word
                                      FROM @NumbersTable
                                      WHERE @tensones = number)
                   + CASE @counter WHEN 1 THEN '' -- No name
                       WHEN 2 THEN ' thousand ' WHEN 3 THEN ' million '
                       WHEN 4 THEN ' billion '  WHEN 5 THEN ' trillion '
                       WHEN 6 THEN ' quadrillion ' WHEN 7 THEN ' quintillion '
                       WHEN 8 THEN ' sextillion '  WHEN 9 THEN ' septillion '
                       WHEN 10 THEN ' octillion '  WHEN 11 THEN ' nonillion '
                       WHEN 12 THEN ' decillion '  WHEN 13 THEN ' undecillion '
                       ELSE '' END
                               + @outputString
   END
ELSE BEGIN
             SET @outputString = ' '
                            + (SELECT word
                                    FROM @NumbersTable
                                    WHERE @tens + '0' = number)
        + '-'
                             + (SELECT word
                                    FROM @NumbersTable
                                    WHERE '0'+ @ones = number)
                   + CASE @counter WHEN 1 THEN '' -- No name
                       WHEN 2 THEN ' thousand ' WHEN 3 THEN ' million '
                       WHEN 4 THEN ' billion '  WHEN 5 THEN ' trillion '
                       WHEN 6 THEN ' quadrillion ' WHEN 7 THEN ' quintillion '
                       WHEN 8 THEN ' sextillion '  WHEN 9 THEN ' septillion '
                       WHEN 10 THEN ' octillion '  WHEN 11 THEN ' nonillion '
                       WHEN 12 THEN ' decillion '   WHEN 13 THEN ' undecillion '
                       ELSE '' END
                            + @outputString
END

IF @hundreds <> '0' BEGIN
SET @outputString  = (SELECT word
                                      FROM @NumbersTable
                                      WHERE '0' + @hundreds = number)
           + ' hundred '
                                + @outputString
END
END

SELECT @counter = @counter + 1
    , @position = @position - 3

END

SET @outputString = LTRIM(RTRIM(REPLACE(@outputString, '  ', ' ')))
SET @outputstring = UPPER(LEFT(@outputstring, 1)) + SUBSTRING(@outputstring, 2, 8000)


RETURN @outputString END



Insert query

insert into table_3 values(1,100,dbo.udf_Num_ToWords(100) )


how to call

select dbo.udf_Num_ToWords(@Number)