金額轉換函數實現

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go

ALTER FUNCTION [dbo].[FN_CONTRACT_MONEY_UPPER] (@n_LowerMoney numeric(15,2),@v_TransType int)  
RETURNS VARCHAR(200) AS  
BEGIN 
Declare @v_LowerStr VARCHAR(200) -- 小寫金額 
Declare @v_UpperPart VARCHAR(200) 
Declare @v_UpperStr VARCHAR(200) -- 大寫金額
Declare @i_I int

set @v_LowerStr = LTRIM(RTRIM(ROUND(@n_LowerMoney,-2))) --四捨五入爲指定的精度並刪除數據左右空格--精確到百位
set @i_I = 1
set @v_UpperStr = ''

while ( @i_I <= len(@v_LowerStr))
begin
      select @v_UpperPart = case substring(@v_LowerStr,len(@v_LowerStr) - @i_I + 1,1)
                            WHEN  '.' THEN  '元'
                            WHEN  '0' THEN  '零'
                            WHEN  '1' THEN  '壹'
                            WHEN  '2' THEN  '貳'
                            WHEN  '3' THEN  '叄'
                            WHEN  '4' THEN  '肆'
                            WHEN  '5' THEN  '伍'
                            WHEN  '6' THEN  '陸'
                            WHEN  '7' THEN  '柒'
                            WHEN  '8' THEN  '捌'
                            WHEN  '9' THEN  '玖'
                            END
                          + 
                            case @i_I
                            WHEN  1  THEN  '分'
                            WHEN  2  THEN  '角'
                            WHEN  3  THEN  ''
                            WHEN  4  THEN  ''
                            WHEN  5  THEN  '拾'
                            WHEN  6  THEN  '佰'
                            WHEN  7  THEN  '仟'
                            WHEN  8  THEN  '萬'
                            WHEN  9  THEN  '拾'
                            WHEN  10  THEN  '佰'
                            WHEN  11  THEN  '仟'
                            WHEN  12  THEN  '億'
                            WHEN  13  THEN  '拾'
                            WHEN  14  THEN  '佰'
                            WHEN  15  THEN  '仟'
                            WHEN  16  THEN  '萬'
                            ELSE ''
                            END
set @v_UpperStr = @v_UpperPart + @v_UpperStr
set @i_I = @i_I + 1
end

if ( 0 = @v_TransType)
begin
set @v_UpperStr = REPLACE(@v_UpperStr,'零拾','零') 
set @v_UpperStr = REPLACE(@v_UpperStr,'零佰','零') 
set @v_UpperStr = REPLACE(@v_UpperStr,'零仟','零') 
set @v_UpperStr = REPLACE(@v_UpperStr,'零零零','零')
set @v_UpperStr = REPLACE(@v_UpperStr,'零零','零')
set @v_UpperStr = REPLACE(@v_UpperStr,'零角零分','整')
set @v_UpperStr = REPLACE(@v_UpperStr,'零分','整')
set @v_UpperStr = REPLACE(@v_UpperStr,'零角','零')
set @v_UpperStr = REPLACE(@v_UpperStr,'零億零萬零元','億元')
set @v_UpperStr = REPLACE(@v_UpperStr,'億零萬零元','億元')
set @v_UpperStr = REPLACE(@v_UpperStr,'零億零萬','億')
set @v_UpperStr = REPLACE(@v_UpperStr,'零萬零元','萬元')
set @v_UpperStr = REPLACE(@v_UpperStr,'萬零元','萬元')
set @v_UpperStr = REPLACE(@v_UpperStr,'零億','億')
set @v_UpperStr = REPLACE(@v_UpperStr,'零萬','萬')
set @v_UpperStr = REPLACE(@v_UpperStr,'零元','元')
set @v_UpperStr = REPLACE(@v_UpperStr,'零零','零')
end

-- 對壹元以下的金額的處理 
if ( '元' = substring(@v_UpperStr,1,1))
begin
     set @v_UpperStr = substring(@v_UpperStr,2,(len(@v_UpperStr) - 1))
end

if ( '零' = substring(@v_UpperStr,1,1))
begin
     set @v_UpperStr = substring(@v_UpperStr,2,(len(@v_UpperStr) - 1))
end

if ( '角' = substring(@v_UpperStr,1,1))
begin
     set @v_UpperStr = substring(@v_UpperStr,2,(len(@v_UpperStr) - 1))
end

if ( '分' = substring(@v_UpperStr,1,1))
begin
     set @v_UpperStr = substring(@v_UpperStr,2,(len(@v_UpperStr) - 1))
end

if ('整' = substring(@v_UpperStr,1,1))
begin
     set @v_UpperStr = '零元整'
end

return replace(replace(replace(replace(replace(replace(@v_UpperStr,'零角',''),'零分',''),'零元',''),'零拾',''),'零佰',''),'零仟','')+'圓整'
END