mysql拼音转化

DELIMITER $$
DROP FUNCTION IF EXISTS f_GetPY $$
DROP FUNCTION IF EXISTS fristPinyin $$
CREATE FUNCTION `fristPinyin`(P_NAME VARCHAR(50)) RETURNS VARCHAR(50) CHARSET utf8
BEGIN
DECLARE V_RETURN VARCHAR(255);
DECLARE V_RETURN1 VARCHAR(20);
SET V_RETURN = ELT(INTERVAL(CONV(HEX(LEFT(CONVERT(P_NAME USING gbk),1)),16,10),
0xB0A1,0xB0C5,0xB2C1,0xB4EE,0xB6EA,0xB7A2,0xB8C1,0xB9FE,0xBBF7,
0xBFA6,0xC0AC,0xC2E8,0xC4C3,0xC5B6,0xC5BE,0xC6DA,0xC8BB,
0xC8F6,0xCBFA,0xCDDA,0xCEF4,0xD1B9,0xD4D1),
'A','B','C','D','E','F','G','H','J','K','L','M','N','O','P','Q','R','S','T','W','X','Y','Z');
SET V_RETURN1 = IF(IFNULL(V_RETURN,'') = '',P_NAME,V_RETURN);
RETURN V_RETURN1;
END $$

CREATE FUNCTION `f_GetPY`(P_NAME VARCHAR(50)) RETURNS VARCHAR(50)
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, 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 $$

DELIMITER ;