用MySQL 生成随机密码

DELIMITER $$

CREATE

FUNCTION `t_girl`
.
`func_rand_string`
(
f_num tinyint
unsigned
,
f_type tinyint
unsigned
)

RETURNS varchar
(
32)

BEGIN

-- Translate the number to letter.

-- No 1 stands for string only.

-- No 2 stands for number only.

-- No 3 stands for combination of the above.

declare i int
unsigned
default
0;

declare v_result varchar
(
255)
default
''
;

while i <
f_num do

if f_type =
1 then

set
v_result =
concat
(
v_result,
char
(
97+
ceil(
rand
(
)
*
25)
)
)
;

elseif f_type=
2 then

set
v_result =
concat
(
v_result,
char
(
48+
ceil(
rand
(
)
*
9)
)
)
;

elseif f_type=
3 then

set
v_result =
concat
(
v_result,
substring
(
replace
(
uuid
(
)
,
'-'
,
''
)
,
i+
1,
1)
)
;

end
if;

set
i =
i +
1;

end
while;

return v_result;

END
$
$

DELIMITER ;