CREATE OR REPLACE FUNCTION NUMBER_TO_CHINESE(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。
个位数处理也放在For循环中。
分后不带整字。
完善测试用例。
测试用例:
select '无参数时='||NUMBER_TO_CHINESE() from dual;
select 'null='||NUMBER_TO_CHINESE(null) from dual;
select '0='||NUMBER_TO_CHINESE(0) from dual;
select '0.01='||NUMBER_TO_CHINESE(0.01) from dual;
select '0.126='||NUMBER_TO_CHINESE(0.126) from dual;
select '01.234='||NUMBER_TO_CHINESE(01.234) from dual;
select '10='||NUMBER_TO_CHINESE(10) from dual;
select '100.1='||NUMBER_TO_CHINESE(100.1) from dual;
select '100.01='||NUMBER_TO_CHINESE(100.01) from dual;
select '10000='||NUMBER_TO_CHINESE(10000) from dual;
select '10012.12='||NUMBER_TO_CHINESE(10012.12) from dual;
select '20000020.01='||NUMBER_TO_CHINESE(20000020.01) from dual;
select '3040506708.901='||NUMBER_TO_CHINESE(3040506708.901) from dual;
select '40005006078.001='||NUMBER_TO_CHINESE(40005006078.001) from dual;
select '-123456789.98='||NUMBER_TO_CHINESE(-123456789.98) from dual;
select '123456789123456789.89='||NUMBER_TO_CHINESE(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
NUM1 NUMBER;
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
SELECT CASE
WHEN LENGTH(NUM_LEFT) >= 8 THEN
TO_NUMBER(SUBSTR(TO_CHAR(NUM_LEFT), -8, 4))
ELSE
TO_NUMBER(SUBSTR(TO_CHAR(NUM_LEFT),
-LENGTH(NUM_LEFT),
LENGTH(NUM_LEFT) - 4))
END
INTO NUM1
FROM DUAL; ---取得千、百、十、万位上的数字
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 NUM_COUNT = 5 THEN
IF MOD(NUM_COUNT - 1, 4) = 0 AND NUM1 <> 0 THEN
RESULT := SUBSTR(STR2, NUM_COUNT, 1) || RESULT;
NUM_PRE := 0; --元、万,亿前不准加零 --当前位是元、万或亿时
END IF;
ELSE
IF MOD(NUM_COUNT - 1, 4) = 0 THEN
RESULT := SUBSTR(STR2, NUM_COUNT, 1) || RESULT;
NUM_PRE := 0; --元、万,亿前不准加零
END IF;
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;