mysql实现拼音首字母查询

mysql功能函数,实现拼音查询：
功能：输入中文字符串每个字的首字母，即可检索出相应数据。
使用方法:直接使用py(字段名)=‘keywords’，即可：

DELIMITER $$
CREATE FUNCTION `firstPinyin`(P_NAME VARCHAR(255)) RETURNS varchar(255) CHARSET utf8  
BEGIN  
    DECLARE V_RETURN VARCHAR(255);  
    SET V_RETURN = ELT(INTERVAL(CONV(HEX(left(CONVERT(P_NAME USING gbk),1)),16,10),   
        0xB0A1,0xB0C5,0xB2C1,0xB4EE,0xB6EA,0xB7A2,0xB8C1,0xB9FE,0xBBF7,   
        0xBFA6,0xC0AC,0xC2E8,0xC4C3,0xC5B6,0xC5BE,0xC6DA,0xC8BB,  
        0xC8F6,0xCBFA,0xCDDA,0xCEF4,0xD1B9,0xD4D1), 'A','B','C','D','E','F','G','H','J','K','L','M','N','O','P','Q','R','S','T','W','X','Y','Z');  
    RETURN V_RETURN;  
END$$
DELIMITER ;

DELIMITER $$
CREATE FUNCTION `pinyin`(P_NAME VARCHAR(255)) RETURNS varchar(255) CHARSET utf8  
BEGIN  
    DECLARE V_COMPARE VARCHAR(255);  
    DECLARE V_RETURN VARCHAR(255);  
    DECLARE I INT;  
    SET I = 1;  
    SET V_RETURN = '';  
    while I < LENGTH(P_NAME) do  
        SET V_COMPARE = SUBSTR(P_NAME, I, 1);  
        IF (V_COMPARE != '') THEN  
            #SET V_RETURN = CONCAT(V_RETURN, ',', V_COMPARE); 
            SET V_RETURN = CONCAT(V_RETURN,firstPinyin(V_COMPARE));  
            #SET V_RETURN = PYFIRST(V_COMPARE); 
        END IF;  
        SET I = I + 1;  
    end while;  
    IF (ISNULL(V_RETURN) or V_RETURN = '') THEN  
        SET V_RETURN = P_NAME;  
    END IF;  
    RETURN V_RETURN;  
END$$
DELIMITER ;

查询示例：

select * from p_apply_info where pinyin(remark) like 'CC%';