mysql生成随机密码示例

DELIMITER $$
USE `t_girl`$$
DROP FUNCTION IF EXISTS `func_range_string_mod`$$

CREATE DEFINER=`root`@`localhost` FUNCTION `func_range_string_mod`(
    f_num INT UNSIGNED -- Total strings.
    ) RETURNS VARCHAR(200) CHARSET latin1
BEGIN
   
      DECLARE i INT UNSIGNED DEFAULT 0;
      DECLARE v_result VARCHAR(200) DEFAULT '';
      DECLARE v_dict VARCHAR(200) DEFAULT '';
      SET v_dict = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
      SET v_dict = LPAD(v_dict,200,v_dict);
      WHILE i < f_num
      DO
SET v_result = CONCAT(v_result,SUBSTR(v_dict,CEIL(RAND()*200),1));
        SET i = i + 1;
      END WHILE;
      RETURN v_result;
    END$$
DELIMITER ;