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  • oracle function 获取拼音首字母

    CREATE OR REPLACE FUNCTION F_GET_PY_CAP(P_NAME IN VARCHAR2) RETURN VARCHAR2 AS
      V_WORD    VARCHAR2(10);
      V_COMPARE VARCHAR2(100);
      V_RETURN  VARCHAR2(4000);
      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_WORD    := SUBSTR(P_NAME, I, 1);
        V_COMPARE := F_NLSSORT(V_WORD);
        IF V_COMPARE >= F_NLSSORT('a') AND V_COMPARE <= F_NLSSORT('z') THEN
          V_RETURN := V_RETURN || V_WORD;
        ELSIF V_COMPARE >= F_NLSSORT('A') AND V_COMPARE <= F_NLSSORT('Z') THEN
          V_RETURN := V_RETURN || V_WORD;
        ELSIF V_COMPARE >= F_NLSSORT('0') AND V_COMPARE <= F_NLSSORT('9') THEN
          V_RETURN := V_RETURN || V_WORD;
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'A';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('簿') THEN
          V_RETURN := V_RETURN || 'B';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'C';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'D';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'E';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'F';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'G';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'H';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'J';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'K';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'L';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'M';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'N';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'O';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'P';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'Q';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'R';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'S';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'T';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'W';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'X';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'Y';
        ELSIF V_COMPARE >= F_NLSSORT('') AND V_COMPARE <= F_NLSSORT('') THEN
          V_RETURN := V_RETURN || 'Z';
        ELSE
          V_RETURN := V_RETURN || SUBSTR(P_NAME, I, 1);
        END IF;
      END LOOP;
      RETURN UPPER(V_RETURN);
    END;
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  • 原文地址:https://www.cnblogs.com/xuhj/p/4224260.html
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