Oracle 中文转字母 函数

 CREATE OR REPLACE FUNCTION F_TRANS_PINYIN_CAPITAL(P_NAME IN VARCHAR2) RETURN VARCHAR2 AS
 V_COMPARE VARCHAR2();
 V_RETURN VARCHAR2();
 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 ..LENGTH(''''||P_NAME||'''') LOOP
 V_COMPARE := F_NLSSORT(SUBSTR(P_NAME, I, ));
 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;