#生成随机字符串函数，在存储过程中调用
delimiter $$
create function rand_string(n int) returns varchar(255)
begin
declare chars_str varchar(100) default 'abcdefghigklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
declare return_str varchar(255) default '';
declare i int default 0;
while i<n do
set return_str = concat(return_str,substring(chars_str,floor(1+rand()*52),1));
set i = i + 1;
end while;
return return_str;
end
$$
delimiter ;
#生成随机数字，在存储过程中调用
delimiter $$
create function rand_num() returns int(5)
begin
declare i int default 0;
set i = floor(10+rand()*500);
return i;
end
$$
delimiter ;
#定义存储过程
delimiter $$
create procedure insert_emp(start int(10),max_num int(10))
begin
declare i int default 0;
set autocommit = 0;
repeat
set i = i+1;
insert into emp values((start+i),rand_string(6),'SALESMAN',0001,2000,400,rand_num(),curdate());
until i = max_num
end repeat;
end
$$
