SQL KTF Sayıyı Yazıya Çeviren KTF

CREATE FUNCTION [dbo].[FN_RAKAMYAZ] (@Sayi bigint)

RETURNS nvarchar(300)
AS
BEGIN
DECLARE @n int,@i int,@UcHane int,@Yed nvarchar(300),@UcluHane nvarchar(300),
@HangiBasamak int,@Negatif bit,@BasamakYaz bit,@SONUC nvarchar(300)
SET @n=9
SET @SONUC=NULL
BEGIN
SET @SONUC=''
IF (@Sayi=0) SET @SONUC='Sıfır' ELSE
BEGIN
IF (@Sayi<0) BEGIN
SET @Negatif=1
SET @Sayi=-@Sayi
END ELSE SET @Negatif=0
SET @HangiBasamak=0;
WHILE (@Sayi>0)
BEGIN
SET @UcHane=@Sayi % 1000
SET @Sayi=@Sayi / 1000
IF (@UcHane>0) SET @BasamakYaz=1 ELSE SET @BasamakYaz=0
IF ((@HangiBasamak=1) and (@UcHane=1)) SET @UcluHane=''
ELSE BEGIN
SET @UcluHane=''
SET @i=@UcHane%10 SET @UcHane=@UcHane/10
SET @UcluHane=CASE @i
WHEN 1 THEN 'Bir'
WHEN 2 THEN 'İki'
WHEN 3 THEN 'Üç'
WHEN 4 THEN 'Dört'
WHEN 5 THEN 'Beş'
WHEN 6 THEN 'Altı'
WHEN 7 THEN 'Yedi'
WHEN 8 THEN 'Sekiz'
WHEN 9 THEN 'Dokuz'
ELSE '' END
SET @i=@UcHane%10 SET @UcHane=@UcHane/10
SET @UcluHane=CASE @i
WHEN 1 THEN 'On'
WHEN 2 THEN 'Yirmi'
WHEN 3 THEN 'Otuz'
WHEN 4 THEN 'Kırk'
WHEN 5 THEN 'Elli'
WHEN 6 THEN 'Altmış'
WHEN 7 THEN 'Yetmiş'
WHEN 8 THEN 'Seksen'
WHEN 9 THEN 'Doksan'
ELSE '' END+@UcluHane
SET @i=@UcHane%10
IF (@i>0) SET @Yed='Yüz' ELSE SET @Yed=''
IF (@i>1) SET @Yed=CASE @i
WHEN 1 THEN 'Bir'
WHEN 2 THEN 'İki'
WHEN 3 THEN 'Üç'
WHEN 4 THEN 'Dört'
WHEN 5 THEN 'Beş'
WHEN 6 THEN 'Altı'
WHEN 7 THEN 'Yedi'
WHEN 8 THEN 'Sekiz'
WHEN 9 THEN 'Dokuz'
ELSE '' END+@Yed
SET @UcluHane=@Yed+@UcluHane;
END
IF (@BasamakYaz=1) SET @SONUC=@UcluHane+CASE @HangiBasamak
WHEN 1 THEN 'Bin'
WHEN 2 THEN 'Milyon'
WHEN 3 THEN 'Milyar'
WHEN 4 THEN 'Trilyon'
WHEN 5 THEN 'Katrilyon'
WHEN 6 THEN 'Kentrilyon'
WHEN 7 THEN 'Sekstilyon'
WHEN 8 THEN 'Septilyon'
WHEN 9 THEN 'Oktilyon'
ELSE '' END+@SONUC
SET @HangiBasamak=@HangiBasamak+1
END
IF (@Negatif=1) SET @SONUC='Eksi'+@SONUC
END
END
RETURN @SONUC
END