delimiter $$
create procedure proc01()
begin
select emp_no,birth_date from employees;
end $$
delimiter ;
call proc01()
delimiter $$
create procedure proc02()
begin
declare var_name01 varchar(20) DEFAULT "aaaa";
set var_name01 = 'zhangsan';
select var_name01;
end $$
delimiter ;
call proc02
delimiter $$
create procedure proc03(in id int)
begin
select emp_no,birth_date,last_name from employees where emp_no = id;
end $$
delimiter ;
call proc03(10001)
delimiter $$
create procedure proc04(in id int, out out_ename varchar(20))
begin
select last_name into out_ename from employees where emp_no = id;
end $$
delimiter ;
CALL proc04(10001,@out_ename);
select @out_ename;
delimiter $$
create procedure proc05(in insertCount int)
begin
declare i int default 1;
label:while i<insertCount do
insert into mytbl (id,name) VALUES (i,concat('user-',i));
set i=i+1;
end while label;
end $$
delimiter ;
call proc05(100000)