标签：return 拼音 UNION 助记 chn ii DUAL Oracle SELECT
1、先实现拼音助记码的函数：
CREATE OR REPLACE FUNCTION fgetpy (v_str VARCHAR2)
RETURN VARCHAR2
AS
v_strlen INT;
v_return VARCHAR2 (500);
v_ii INT;
v_n INT;
v_c VARCHAR2 (2);
v_chn VARCHAR2 (2);
v_rc VARCHAR2 (500);
/*************************************************************************
生成汉字拼音码的函数。 wallimn 2009-06-21
**************************************************************************/
BEGIN
--dbms_output.put_line(v_str);
v_rc :=v_str;
v_strlen :=LENGTH (v_rc);
v_return :='';
v_ii :=0;
WHILE v_ii < v_strlen
LOOP
v_ii :=v_ii + 1;
v_n :=63;
SELECT SUBSTR (v_rc, v_ii, 1)
INTO v_chn
FROM DUAL;
SELECT v_n + MAX (rowsf)
INTO v_n
FROM (SELECT chn, ROWNUM rowsf
FROM (SELECT chn
FROM (SELECT '吖' chn
FROM DUAL
UNION
SELECT '八'
FROM DUAL
UNION ALL
SELECT '嚓'
FROM DUAL
UNION ALL
SELECT '咑'
FROM DUAL
UNION ALL
SELECT '妸'
FROM DUAL
UNION ALL
SELECT '发'
FROM DUAL
UNION ALL
SELECT '旮'
FROM DUAL
UNION ALL
SELECT '铪'
FROM DUAL
UNION ALL
SELECT '丌'
FROM DUAL --because have no 'i'
UNION ALL
SELECT '丌'
FROM DUAL
UNION ALL
SELECT '咔'
FROM DUAL
UNION ALL
SELECT '垃'
FROM DUAL
UNION ALL
SELECT '嘸'
FROM DUAL
UNION ALL
SELECT '拏'
FROM DUAL
UNION ALL
SELECT '噢'
FROM DUAL
UNION ALL
SELECT '妑'
FROM DUAL
UNION ALL
SELECT '七'
FROM DUAL
UNION ALL
SELECT '呥'
FROM DUAL
UNION ALL
SELECT '仨'
FROM DUAL
UNION ALL
SELECT '他'
FROM DUAL
UNION ALL
SELECT '屲'
FROM DUAL
UNION ALL
SELECT '屲'
FROM DUAL
UNION ALL
SELECT '屲'
FROM DUAL
UNION ALL
SELECT '夕'
FROM DUAL
UNION ALL
SELECT '丫'
FROM DUAL
UNION ALL
SELECT '帀'
FROM DUAL
UNION ALL
SELECT v_chn
FROM DUAL) a
ORDER BY NLSSORT (chn, 'NLS_SORT=SCHINESE_PINYIN_M')) c) b
WHERE chn=v_chn;
v_c :=CHR (v_n);
IF CHR (v_n)='@'
THEN --英文直接返回
v_c :=v_chn;
END IF;
v_return :=v_return || v_c;
v_return :=lower(v_return);
END LOOP;
RETURN upper(v_return);
END fgetpy;
2、更新拼音助记码
update TEST set A=FGETPY(需要生成拼音助记码的项目名称);
标签：return,拼音,UNION,助记,chn,ii,DUAL,Oracle,SELECT 来源： https://www.cnblogs.com/linjingyg/p/15755353.html
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