mysql 的奇怪现象

mysql5.1.48  ubuntu10.10 表结构如下CREATE TABLE user (
  uid int(11) NOT NULL auto_increment,
  username varchar(50) NOT NULL,
  password varchar(50) NOT NULL,
  email varchar(50),
   state bool default 0,
  PRIMARY KEY  (uid)
  ) ENGINE=InnoDB DEFAULT CHARSET=gb2312;插入语句：
insert into user values ("Joy","123","")
insert into user values ("Joy","123",""，0)
报错，非要插入全部字段才正确，恶心，从没碰到的问题。大家帮帮我吧。