MySQL获取汉字的拼音首字母

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--获取汉字拼音首字母的函数其一DROP FUNCTION IF EXISTS `GET_FIRST_PINYIN_CHAR`;DELIMITER ;;CREATE FUNCTION `GET_FIRST_PINYIN_CHAR`(PARAM VARCHAR(255)) RETURNS VARCHAR(2) CHARSET utf8    DETERMINISTICBEGIN     DECLARE V_RETURN VARCHAR(255);    DECLARE V_FIRST_CHAR VARCHAR(2);    SET V_FIRST_CHAR = UPPER(LEFT(PARAM,1));    SET V_RETURN = V_FIRST_CHAR;    IF LENGTH( V_FIRST_CHAR) <> CHARACTER_LENGTH( V_FIRST_CHAR ) THEN    SET V_RETURN = ELT(INTERVAL(CONV(HEX(LEFT(CONVERT(PARAM 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');    END IF;    RETURN V_RETURN;END;;DELIMITER ;

--获取汉字拼音首字母的函数其二DROP FUNCTION IF EXISTS `GET_FIRST_PINYIN_CHAR`;DELIMITER ;;CREATE FUNCTION `GET_FIRST_PINYIN_CHAR`(P_NAME VARCHAR(255)) RETURNS varchar(255) CHARSET utf8    DETERMINISTICBEGIN     DECLARE V_RETURN VARCHAR(255);    DECLARE V_BOOL INT DEFAULT 0;          DECLARE FIRST_VARCHAR VARCHAR(1);    SET FIRST_VARCHAR = left(CONVERT(P_NAME USING gbk),1);    SELECT FIRST_VARCHAR REGEXP '[a-zA-Z]' INTO V_BOOL;    IF V_BOOL = 1 THEN      SET V_RETURN = FIRST_VARCHAR;    ELSE      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');      END IF;    RETURN V_RETURN;END;;DELIMITER ;

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