Creating random password in Mysql database

Question

Good morning, I’m trying to create a Rigger that generates a random password with uppercase letters and 0-9 numbers in a database password field, as it is possible to do this Rigger ?

[FUNCTION]

CREATE DEFINER=`root`@`localhost` FUNCTION `gerador_senha`() RETURNS char(6) CHARSET utf8
BEGIN
  DECLARE Aux VARCHAR(31) DEFAULT '23456789ABCDEFGHJKMNPQRSTUVWXYZ';
  DECLARE Result varchar(6) DEFAULT '';
  REPEAT
    SET Result = CONCAT(Result, SUBSTRING(Aux, FLOOR(RAND() * 31), 1));
  UNTIL LENGTH(Result) = 6
  END REPEAT;
  RETURN Result;
END

[TRIGGER]

CREATE
DEFINER=`root`@`localhost`
TRIGGER `vendas`.`before_funcionarios_insert`
BEFORE UPDATE ON `vendas`.`tb_funcionarios`
FOR EACH ROW
BEGIN
     IF (NEW.fun_senha = ' ' or New.fun_senha IS NULL) THEN
    SET NEW.fun_senha = gerador_senha();
  END IF;
END