一 . fristPinyin : 此函数是将一个中文字符串的第一个汉字转成拼音字母 (例如:"中国人"->Z)
CREATE FUNCTION `fristPinyin`(P_NAME VARCHAR(255)) RETURNS varchar(255) CHARSET utf8 BEGIN DECLARE V_RETURN VARCHAR(255); SET V_RETURN = ELT(INTERVAL(CONV(HEX(left(CONVERT(P_NAME USING gbk),1)),16,10), 0xB0A1,0xB0C5,0xB2C1,0xB4EE,0xB6EA,0xB7A2,0xB8C1,0xB9FE,0xBBF7, 0xBFA6,0xC0AC,0xC2E8,0xC4C3,0xC5B6,0xC5BE,0xC6DA,0xC8BB, 0xC8F6,0xCBFA,0xCDDA,0xCEF4,0xD1B9,0xD4D1), ‘A‘,‘B‘,‘C‘,‘D‘,‘E‘,‘F‘,‘G‘,‘H‘,‘J‘,‘K‘,‘L‘,‘M‘,‘N‘,‘O‘,‘P‘,‘Q‘,‘R‘,‘S‘,‘T‘,‘W‘,‘X‘,‘Y‘,‘Z‘); RETURN V_RETURN; END
二.pinyin :此函数是将一个中文字符串对应拼音母的每个相连 (例如:"中国人"->ZGR)
CREATE FUNCTION `pinyin`(P_NAME VARCHAR(255)) RETURNS varchar(255) CHARSET utf8 BEGIN DECLARE V_COMPARE VARCHAR(255); DECLARE V_RETURN VARCHAR(255); DECLARE I INT; SET I = 1; SET V_RETURN = ‘‘; while I < LENGTH(P_NAME) do SET V_COMPARE = SUBSTR(P_NAME, I, 1); IF (V_COMPARE != ‘‘) THEN #SET V_RETURN = CONCAT(V_RETURN, ‘,‘, V_COMPARE); SET V_RETURN = CONCAT(V_RETURN, fristPinyin(V_COMPARE)); #SET V_RETURN = fristPinyin(V_COMPARE); END IF; SET I = I + 1; end while; IF (ISNULL(V_RETURN) or V_RETURN = ‘‘) THEN SET V_RETURN = P_NAME; END IF; RETURN V_RETURN; END
示例:
mysql> select p.province, fristPinyin(p.province), pinyin(p.province) from province p;
+------------------+-------------------------+--------------------+
| province | fristPinyin(p.province) | pinyin(p.province) |
+------------------+-------------------------+--------------------+
| 北京市 | B | BJS |
| 天津市 | T | TJS |
| 河北省 | H | HBS |
| 山西省 | S | SXS |
| 内蒙古自治区 | N | NMGZZQ |
+------------------+-------------------------+--------------------+
5 rows in set