create or replace function comm.F_upper_money(p_num in number default null)
return nvarchar2 is
/*Ver:1.0 Created By xsb on 2003-8-18 For:
将金额数字(单位元)转换为大写(采用从低至高算法)
数字整数部分不得超过16位,可以是负数。
Ver：1.1 Modified By xsb on 2003-8-20 For:个位数处理也放在For循环中。
Ver：1.2 Modified By xsb on 2003-8-22 For:分后不带整字。
Ver：1.3 Modified By xsb on 2003-8-28 For:完善测试用例。
测试用例:
SET HEAD OFF
SET FEED OFF
select '无参数时='||f_upper_money() from dual;
select 'null='||f_upper_money(null) from dual;
select '0='||f_upper_money(0) from dual;
select '0.01='||f_upper_money(0.01) from dual;
select '0.126='||f_upper_money(0.126) from dual;
select '01.234='||f_upper_money(01.234) from dual;
select '10='||f_upper_money(10) from dual;
select '100.1='||f_upper_money(100.1) from dual;
select '100.01='||f_upper_money(100.01) from dual;
select '10000='||f_upper_money(10000) from dual;
select '10012.12='||f_upper_money(10012.12) from dual;
select '20000020.01='||f_upper_money(20000020.01) from dual;
select '3040506708.901='||f_upper_money(3040506708.901) from dual;
select '40005006078.001='||f_upper_money(40005006078.001) from dual;
select '-123456789.98='||f_upper_money(-123456789.98) from dual;
select '123456789123456789.89='||f_upper_money(123456789123456789.89) from dual;
*/
Result nvarchar2(100); --返回字符串
num_round nvarchar2(100) := to_char(abs(round(p_num, 2))); --转换数字为小数点后2位的字符(正数)
num_left nvarchar2(100); --小数点左边的数字
num_right nvarchar2(2); --小数点右边的数字
str1 nchar(10) := '零壹贰叁肆伍陆柒捌玖'; --数字大写
str2 nchar(16) := '元拾佰仟万拾佰仟亿拾佰仟万拾佰仟'; --数字位数(从低至高)
num_pre number(1) := 1; --前一位上的数字
num_current number(1); --当前位上的数字
num_count number := 0; --当前数字位数
begin
if p_num is null then
return null;
end if; --转换数字为null时返回null
select to_char(nvl(substr(to_char(num_round),
1,
decode(instr(to_char(num_round), '.'),
0,
length(num_round),
instr(to_char(num_round), '.') - 1)),
0))
into num_left
from dual; --取得小数点左边的数字
select substr(to_char(num_round),
decode(instr(to_char(num_round), '.'),
0,
length(num_round) + 1,
instr(to_char(num_round), '.') + 1),
2)
into num_right
from dual; --取得小数点右边的数字
if length(num_left) > 16 then
return '**********';
end if; --数字整数部分超过16位时
--采用从低至高的算法，先处理小数点右边的数字
if length(num_right) = 2 then
if to_number(substr(num_right, 1, 1)) = 0 then
result := '零' ||
substr(str1, to_number(substr(num_right, 2, 1)) + 1, 1) || '分';
else
result := substr(str1, to_number(substr(num_right, 1, 1)) + 1, 1) || '角' ||
substr(str1, to_number(substr(num_right, 2, 1)) + 1, 1) || '分';
end if;
elsif length(num_right) = 1 then
result := substr(str1, to_number(substr(num_right, 1, 1)) + 1, 1) || '角整';
else
result := '整';
end if;
--再处理小数点左边的数字
for i in reverse 1 .. length(num_left) loop
--(从低至高)
num_count := num_count + 1; --当前数字位数
num_current := to_number(substr(num_left, i, 1)); --当前位上的数字
if num_current > 0 then
--当前位上数字不为0按正常处理
result := substr(str1, num_current + 1, 1) ||
substr(str2, num_count, 1) || result;
else
--当前位上数字为0时
if mod(num_count - 1, 4) = 0 then
--当前位是元、万或亿时
result := substr(str2, num_count, 1) || result;
num_pre := 0; --元、万,亿前不准加零
end if;
if num_pre > 0 or length(num_left) = 1 then
--上一位数字不为0或只有个位时
result := substr(str1, num_current + 1, 1) || result;
end if;
end if;
num_pre := num_current;
end loop;
if p_num < 0 then
--转换数字是负数时
result := '负' || result;
end if;
return Result;
exception
when others then
raise_application_error(-20001, '数字转换大写出现错误！' || sqlerrm);
end;
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