MySQL技巧系列(4)随机手机号

-- 随机手机号
CREATE  FUNCTION `generatePhone`() RETURNS char(11) CHARSET utf8
    DETERMINISTIC
BEGIN
    DECLARE head VARCHAR(100) DEFAULT '000,156,136,176';
    DECLARE content CHAR(10) DEFAULT '0123456789';
    DECLARE phone CHAR(11) DEFAULT substring(head, 1+(FLOOR(1 + (RAND() * 3))*4), 3);
    
    #SET phone = CONCAT(phone, substring('156,136,123,456,789', 1+(FLOOR(1 + (RAND() * 4))*4), 3));
    
    DECLARE i int DEFAULT 1;
    DECLARE len int DEFAULT LENGTH(content);
    WHILE i<9 DO
        SET i=i+1;
        SET phone = CONCAT(phone, substring(content, floor(1 + RAND() * len), 1));
    END WHILE;
    
    RETURN phone;
END