在mysql新建函数;
程序名称:GET_FIRST_PINYIN_CHAR
参数设置? ?PARAM VARCHAR(255)
返回类型??varchar(2)
类型? FUNCTION
Mysql定义:
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 ? 点击执行。数据库里面执行已经完成。 下面就是如何在项目中使用: 比如:SELECT *,GET_FIRST_PINYIN_CHAR('Cname') AS 'sa' FROM `erp_competence`;