Mysql中文按首字母A-Z檢索

Mysql中文按首字母A-Z檢索

首先創建字母A-Z檢索函數

-- 創建首字母檢索函數

DROP FUNCTION IF EXISTS `GET_FIRST_PINYIN_CHAR`;  

CREATE FUNCTION `GET_FIRST_PINYIN_CHAR`(PARAM VARCHAR(255)) RETURNS VARCHAR(2) CHARSET utf8  

BEGIN  

    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 ;

查詢SQL

select z.*,get_first_pinyin_char(z.zone_name) as abc from t_d_zone z where get_first_pinyin_char(z.zone_name) = 'B' ;

查詢結果