标签:int roc use turn limit func char -- cal
DROP PROCEDURE IF EXISTS test;
delimiter $$
CREATE PROCEDURE test(IN uid INT)
BEGIN
select * from table_a where userid=uid;
END; $$
delimiter ;
CALL test(100);
substring(MD5(RAND()),1, 5)
-- or
DROP FUNCTION IF EXISTS `random_string`;
delimiter $$
CREATE FUNCTION `random_string`(n int) RETURNS varchar(255) CHARSET utf8
BEGIN
DECLARE chars_str varchar(100) DEFAULT 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
DECLARE return_str varchar(255) DEFAULT '';
DECLARE i INT DEFAULT 0;
WHILE i < n
DO
SET return_str = concat(return_str,substring(chars_str , FLOOR(1 + RAND()*62 ),1));
SET i = i +1;
END WHILE;
RETURN return_str;
END; $$
SELECT random_string(10);
标签:int roc use turn limit func char -- cal
原文地址:https://www.cnblogs.com/liehen2046/p/12159981.html