例：输入10023040，程序给出：壹仟另贰万叁仟另肆拾
解决方案之一（在SqlServer2000中测试通过）：
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='另壹贰叁肆伍陆柒捌玖',@unit='拾佰仟万拾佰仟亿'
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,'另万','万')
WHILE @i>0
BEGIN
SET @str=REPLACE(@str,'另另','另')
SET @i=CHARINDEX('另另',@str)
END
SET @str=REPLACE(@str,'另万','万')
SET @str=REPLACE(@str,'亿万','亿')
IF RIGHT(@str,1)='另'
SET @str=LEFT(@str,LEN(@str)-1)
RETURN @str
END
GO
--测试：有0和没有0的情况
SELECT dbo.fun_cgnum(900000000),dbo.fun_cgnum(903002051),dbo.fun_cgnum(903002050)
PS：有兴趣的朋友可以继续考虑有小数点以及添加单位（元/角/分）的情况
