金額小寫轉大寫的函式（連續使用很久了）

create or replace function f_upper_money(p_num in number default null)

return nvarchar2 is
/*ver:1.0 created by xsb on 2003-8-18 for:
將金額數字(單位元)轉換為大寫(採用從低至高演算法)
數字整數部分不得超過16位,可以是負數。
ver：1.1 modified by xsb on 2003-8-20 for:個位數處理也放在for迴圈中。 
ver：1.2 modified by xsb on 2003-8-22 for:分後不帶整字。
ver：1.3 modified by xsb on 2003-8-28 for:完善測試用例。
測試用例:
set head off
set feed off
select '無引數時='||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);--返回字串
num_round nvarchar2(100) :=to_char(abs(round(p_num,2)));--轉換數字為小數點後2位的字元(正數)
num_left nvarchar2(100);--小數點左邊的數字
num_right nvarchar2(2);--小數點右邊的數字
str1 nchar(10) :='零壹貳參肆伍陸柒捌玖';--數字大寫
str2 nchar(16) :='元拾佰仟萬拾佰仟億拾佰仟萬拾佰仟';--數字位數(從低至高)
num_pre number(1):=1;--前一位上的數字
num_current number(1);--當前位上的數字
num_count number:=0;--當前數字位數 
begin
if p_num is null then return null;end if;--轉換數字為null時返回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;--取得小數點左邊的數字
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;--取得小數點右邊的數字
if length(num_left)>16 then return '**********'; end if;--數字整數部分超過16位時
--採用從低至高的演算法，先處理小數點右邊的數字
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;
--再處理小數點左邊的數字
for i in reverse 1..length(num_left) loop --(從低至高)
num_count:=num_count+1;--當前數字位數
num_current:=to_number(substr(num_left,i,1));--當前位上的數字
if num_current>0 then --當前位上數字不為0按正常處理
result:=substr(str1,num_current+1,1)||substr(str2,num_count,1)||result;
else --當前位上數字為0時
if mod(num_count-1,4)=0 then --當前位是元、萬或億時
result:=substr(str2,num_count,1)||result;
num_pre:=0;--元、萬,億前不准加零
end if; 
if num_pre>0 or length(num_left)=1 then --上一位數字不為0或只有個位時
result:=substr(str1,num_current+1,1)||result;
end if; 
end if;
num_pre:=num_current; 
end loop;
if p_num<0 then --轉換數字是負數時
result:='負'||result; 
end if;
return result;
exception
when others then 
end ;

金額小寫轉大寫的函式（連續使用很久了）

create or replace function f upper money p num in number default null return nvarchar2 is ver 1.0 created by xsb on 2003 8 18 for 將金額數字 單位元 轉換為大寫 採用從低...

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