初学存储过程
DELIMITER // 定义写存储过程中的结束符为 //
创建存储过程1：
create procedure proce_userinfo(in name varchar(10) ,int pwd varchar(10),out flag int)
begin
select power from user where Username=name and password=pwd into flag;
end //
创建存储过程2:
create procedure proc_reg(in name varchar(10),in pwd varchar(10),out flag int)
begin
set @count=0;
select count(*) from users where username=name into @count;
if @count>0 then
set flag=0;
else
set flag=1;
insert into users(username,passwords)values (name,pwd);
end if;
end
declare 只是声明，set既声明又赋值