相关疑难解决方法(0)

在mysql中创建触发器时我得到错误1046.我的查询是:

CREATE TABLE test.Employee(
              id            int,
              first_name    VARCHAR(30),
              last_name     VARCHAR(15),
              start_date    DATE,
              end_date      DATE,
              city          VARCHAR(10),
              description   VARCHAR(15)
          );


CREATE TABLE test.Employee_log(
              id int,
              first_name varchar(50),
              last_name varchar(50),
              start_date date,
              end_date date,
              city varchar(50),
              description varchar(50),
              Lasinserted Time
          );

当我在线下执行时它会给出错误:

Error Code : 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'END$$ 
delimiter' at line 1
(16 ms taken)


delimiter $$
CREATE …

我从http://forge.mysql.com/wiki/Triggers学习触发器 ,我有:

create trigger bi_emps_fer before insert on emps for each row
begin

    declare newsal numeric default 0;
    declare namelength, l_loop int default 0;

    set namelength = length(new.emp_name);

    while l_loop < namelength do

       set newsal := newsal   new.salary;

       set l_loop := l_loop   1;

    end while;

    set new.salary = newsal;

end

和错误:

1064 - 您的SQL语法出错; 检查与MySQL服务器版本对应的手册,以便在第4行的''附近使用正确的语法

为什么？我使用MySQL 5.5.8和phpmyadmin 3.3.9