Mysql 通過拼音首字母分組和排序(2)
第一篇講的是直接套用mysql函式定義來實現拼音分組和排序
這一篇通過mysql function(函式) 進行實現,直接貼程式碼:
DELIMITER $$
CREATE FUNCTION `fristPinyin`(
P_NAME VARCHAR(255)
)
RETURNS varchar(255) CHARSET utf8
DETERMINISTIC
BEGIN
DECLARE V_RETURN VARCHAR(255);
DECLARE V_BOOL INT DEFAULT 0;
DECLARE V_NUM VARCHAR(2);
DECLARE FIRST_VARCHAR VARCHAR(1);
SET FIRST_VARCHAR = left(CONVERT(P_NAME USING gbk),1);
SELECT FIRST_VARCHAR REGEXP '[a-zA-Z]' INTO V_BOOL;
SELECT FIRST_VARCHAR REGEXP '[0-9]' INTO V_NUM;
IF V_BOOL = 1 THEN
SET V_RETURN = FIRST_VARCHAR;
ELSEIF V_NUM = 1 THEN
SET V_RETURN = '#';
ELSE
SET V_RETURN = ELT(INTERVAL(CONV(HEX(left(CONVERT(P_NAME USING gbk),1)),16,10),
0xB0A1,0xB0C5,0xB2C1,0xB4EE,0xB6EA,0xB7A2,0xB8C1,0xB9FE,0xBBF7,
0xBFA6,0xC0AC,0xC2E8,0xC4C3,0xC5B6,0xC5BE,0xC6DA,0xC8BB,0xC8F6,
0xCBFA,0xCDDA,0xCEF4,0xD1B9,0xD4D1),
'A','B','C','D','E','F','G','H','J','K','L','M','N','O','P','Q','R','S','T','W','X','Y','Z');
END IF;
RETURN V_RETURN;
END$$
DELIMITER;
最後在後臺中通過map去實現對資料進行分組