例：輸入12345，程序給出：壹萬貳仟三佰肆拾伍
例：輸入10023040，程序給出：壹仟另貳萬三仟另肆拾
解決方案之一（在SqlServer2000中測試通過）：
CREATE FUNCTION fun_cgnum
(@num INT)
RETURNS VARCHAR(100)
AS
BEGIN
DECLARE @temp INT,@res INT,@i TINYINT
DECLARE @str VARCHAR(100),@no VARCHAR(20),@unit VARCHAR(16)
SELECT @str='',@no='另壹貳三肆伍陸柒捌玖',@unit='拾佰仟萬拾佰仟億'
SET @temp=@num
SELECT @i=0,@res=@temp%10,@temp=@temp/10
WHILE @temp>0
BEGIN
IF @i=0
SET @str=SUBSTRING(@no,@res+1,1)
ELSE
SET @str=SUBSTRING(@no,@res+1,1)+SUBSTRING(@unit,@i,1)+@str
SELECT @res=@temp%10,@temp=@temp/10
SET @i=@i+1
END
SET @str=SUBSTRING(@no,@res+1,1)+SUBSTRING(@unit,@i,1)+@str
SET @str=REPLACE(@str,'另拾','另')
SET @str=REPLACE(@str,'另佰','另')
SET @str=REPLACE(@str,'另仟','另')
SET @str=REPLACE(@str,'另拾','另')
SET @str=REPLACE(@str,'另萬','萬')
WHILE @i>0
BEGIN
SET @str=REPLACE(@str,'另另','另')
SET @i=CHARINDEX('另另',@str)
END
SET @str=REPLACE(@str,'另萬','萬')
SET @str=REPLACE(@str,'億萬','億')
IF RIGHT(@str,1)='另'
SET @str=LEFT(@str,LEN(@str)-1)
RETURN @str
END
GO
--測試：有0和沒有0的情況
SELECT dbo.fun_cgnum(900000000),dbo.fun_cgnum(903002051),dbo.fun_cgnum(903002050)
PS：有興趣的朋友可以繼續考慮有小數點以及添加單位（元/角/分）的情況
