CREATE OR REPLACE FUNCTION PUB_GET_PY(p_zh_char CHAR DEFAULT '%')
RETURN CHAR
IS
/********************************************************************
过程名称：PUB_GET_PY
功能：生成汉字拼音的首字符
********************************************************************/
---v_汉字内码
v_zh_char_code NUMBER(8);
---v_拼音
v_py CHAR(1);
BEGIN
v_zh_char_code := ASCII(p_zh_char);
IF v_zh_char_code BETWEEN 45217 AND 45252 THEN
v_py := 'A';
ELSIF v_zh_char_code BETWEEN 45253 AND 45760 THEN
v_py := 'B';
ELSIF v_zh_char_code BETWEEN 45761 AND 46317 THEN
v_py := 'C';
ELSIF v_zh_char_code BETWEEN 46318 AND 46825 THEN
v_py := 'D';
ELSIF v_zh_char_code BETWEEN 46826 AND 47009 THEN
v_py := 'E';
ELSIF v_zh_char_code BETWEEN 47010 AND 47296 THEN
v_py := 'F';
ELSIF v_zh_char_code BETWEEN 47297 AND 47613 THEN
v_py := 'G';
ELSIF v_zh_char_code BETWEEN 47614 AND 48116 THEN
v_py := 'H';
ELSIF v_zh_char_code BETWEEN 48117 AND 49061 THEN
v_py := 'J';
ELSIF v_zh_char_code BETWEEN 49062 AND 49323 THEN
v_py := 'K';
ELSIF v_zh_char_code BETWEEN 49324 AND 49895 THEN
v_py := 'L';
ELSIF v_zh_char_code BETWEEN 49896 AND 50370 THEN
v_py := 'M';
ELSIF v_zh_char_code BETWEEN 50371 AND 50613 THEN
v_py := 'N';
ELSIF v_zh_char_code BETWEEN 50614 AND 50621 THEN
v_py := 'O';
ELSIF v_zh_char_code BETWEEN 50622 AND 50925 THEN
v_py := 'P';
ELSIF v_zh_char_code BETWEEN 50926 AND 51386 THEN
v_py := 'Q';
ELSIF v_zh_char_code BETWEEN 51387 AND 51445 THEN
v_py := 'R';
ELSIF v_zh_char_code BETWEEN 51446 AND 52217 THEN
v_py := 'S';
ELSIF v_zh_char_code BETWEEN 52218 AND 52697 THEN
v_py := 'T';
ELSIF v_zh_char_code BETWEEN 52698 AND 52979 THEN
v_py := 'W';
ELSIF v_zh_char_code BETWEEN 52980 AND 53640 THEN
v_py := 'X';
ELSIF v_zh_char_code BETWEEN 53641 AND 54480 THEN
v_py := 'Y';
ELSIF v_zh_char_code BETWEEN 54481 AND 55289 THEN
v_py := 'Z';
ELSE
v_py := NULL;
END IF;
RETURN v_py;
END PUB_GET_PY;
提取汉字字符串的拼音的首字母，其中去掉空格保留原有字母和数字：
create or replace FUNCTION PUB_GET_STRING_PY(strs varchar2)
return varchar2
is
/***********************************
过程名称：PUB_GET_STRING_PY
功能：生成汉字字符串的拼音首字符
**********************************/
v_length number;
v_char varchar2(2);
v_charlength number;
v_charPY varchar2(2);
i int:=1;
myresult varchar2(500):='';
begin
--获取字符串长度
v_length:=length(strs);
while i<=v_length
loop
--按顺序取得字符
v_char:=substr(strs,i,1);
v_charlength:=lengthb(rtrim(v_char));
v_charPY:=rtrim(v_char);
--判断是否是汉字
if v_charlength=2 then
v_charPY:=pub_get_py(rtrim(v_char));
end if;
--将拼音进行连接
myresult:=myresult || v_charPY;
i:=i+1;
end loop;
return myresult;
end PUB_GET_STRING_PY;
方法二： 获取拼音简码函数
CREATE OR REPLACE FUNCTION GET_PYJM (P_NAME IN VARCHAR2)
RETURN VARCHAR2
AS
V_COMPARE VARCHAR2 (100);
V_RETURN VARCHAR2 (4000);
BEGIN
DECLARE
FUNCTION F_NLSSORT (P_WORD IN VARCHAR2)
RETURN VARCHAR2
AS
BEGIN
RETURN NLSSORT (P_WORD, 'NLS_SORT=SCHINESE_PINYIN_M');
END;
BEGIN
FOR I IN 1 .. LENGTH (P_NAME)
LOOP
V_COMPARE := F_NLSSORT (SUBSTR (P_NAME, I, 1));
IF V_COMPARE >= F_NLSSORT ('吖')
AND V_COMPARE <= F_NLSSORT ('驁')
THEN
V_RETURN := V_RETURN || 'A';
ELSIF V_COMPARE >= F_NLSSORT ('八')
AND V_COMPARE <= F_NLSSORT ('簿')
THEN
V_RETURN := V_RETURN || 'B';
ELSIF V_COMPARE >= F_NLSSORT ('嚓')
AND V_COMPARE <= F_NLSSORT ('錯')
THEN
V_RETURN := V_RETURN || 'C';
ELSIF V_COMPARE >= F_NLSSORT ('咑')
AND V_COMPARE <= F_NLSSORT ('鵽')
THEN
V_RETURN := V_RETURN || 'D';
ELSIF V_COMPARE >= F_NLSSORT ('妸')
AND V_COMPARE <= F_NLSSORT ('樲')
THEN
V_RETURN := V_RETURN || 'E';
ELSIF V_COMPARE >= F_NLSSORT ('发')
AND V_COMPARE <= F_NLSSORT ('猤')
THEN
V_RETURN := V_RETURN || 'F';
ELSIF V_COMPARE >= F_NLSSORT ('旮')
AND V_COMPARE <= F_NLSSORT ('腂')
THEN
V_RETURN := V_RETURN || 'G';
ELSIF V_COMPARE >= F_NLSSORT ('妎')
AND V_COMPARE <= F_NLSSORT ('夻')
THEN
V_RETURN := V_RETURN || 'H';
ELSIF V_COMPARE >= F_NLSSORT ('丌')
AND V_COMPARE <= F_NLSSORT ('攈')
THEN
V_RETURN := V_RETURN || 'J';
ELSIF V_COMPARE >= F_NLSSORT ('咔')
AND V_COMPARE <= F_NLSSORT ('穒')
THEN
V_RETURN := V_RETURN || 'K';
ELSIF V_COMPARE >= F_NLSSORT ('垃')
AND V_COMPARE <= F_NLSSORT ('擽')
THEN
V_RETURN := V_RETURN || 'L';
ELSIF V_COMPARE >= F_NLSSORT ('嘸')
AND V_COMPARE <= F_NLSSORT ('椧')
THEN
V_RETURN := V_RETURN || 'M';
ELSIF V_COMPARE >= F_NLSSORT ('拏')
AND V_COMPARE <= F_NLSSORT ('瘧')
THEN
V_RETURN := V_RETURN || 'N';
ELSIF V_COMPARE >= F_NLSSORT ('筽')
AND V_COMPARE <= F_NLSSORT ('漚')
THEN
V_RETURN := V_RETURN || 'O';
ELSIF V_COMPARE >= F_NLSSORT ('妑')
AND V_COMPARE <= F_NLSSORT ('曝')
THEN
V_RETURN := V_RETURN || 'P';
ELSIF V_COMPARE >= F_NLSSORT ('七')
AND V_COMPARE <= F_NLSSORT ('裠')
THEN
V_RETURN := V_RETURN || 'Q';
ELSIF V_COMPARE >= F_NLSSORT ('亽')
AND V_COMPARE <= F_NLSSORT ('鶸')
THEN
V_RETURN := V_RETURN || 'R';
ELSIF V_COMPARE >= F_NLSSORT ('仨')
AND V_COMPARE <= F_NLSSORT ('蜶')
THEN
V_RETURN := V_RETURN || 'S';
ELSIF V_COMPARE >= F_NLSSORT ('侤')
AND V_COMPARE <= F_NLSSORT ('籜')
THEN
V_RETURN := V_RETURN || 'T';
ELSIF V_COMPARE >= F_NLSSORT ('屲')
AND V_COMPARE <= F_NLSSORT ('鶩')
THEN
V_RETURN := V_RETURN || 'W';
ELSIF V_COMPARE >= F_NLSSORT ('夕')
AND V_COMPARE <= F_NLSSORT ('鑂')
THEN
V_RETURN := V_RETURN || 'X';
ELSIF V_COMPARE >= F_NLSSORT ('丫')
AND V_COMPARE <= F_NLSSORT ('韻')
THEN
V_RETURN := V_RETURN || 'Y';
ELSIF V_COMPARE >= F_NLSSORT ('帀')
AND V_COMPARE <= F_NLSSORT ('咗')
THEN
V_RETURN := V_RETURN || 'Z';
END IF;
END LOOP;
RETURN V_RETURN;
END;
END;